Skytron Elite 3100 User manual

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ELITE SERIES SURGICAL TABLES

OPERATORS MANUAL

MODEL ELITE 3100 & 3100A

MODEL 3100

SKYTRON STANDARD LIMITED WARRANTY

SKYTRON, a Division of the KMW Group, Inc. (SKYTRON) warrants all new products sold by it directly or through a dealer or other authorized representative, with exception to replacement parts, spares, bulbs (surgical lights), pads, and accessory items (surgical tables) to be free from defects in material or workmanship, under normal use and service, for a period of two (2) years. This warranty shall include the cost of repair or replacement of defective parts including the cost of service labor and travel time to the site of equipment use. Delays caused by the user in accessing the equipment for repair will be chargeable at the normal hourly rate for service by SKYTRON’s authorized service representative. The warranty period shall begin with the initial operation or one (1) year after receipt of the product, whichever shall occur first.

Replacement parts, spares, bulbs (surgical lights), pads and accessory items (surgical tables) are warranted to be free from defects in material or workmanship, under normal use and service, for a period of ninety (90) days from receipt by the ultimate user, with exception to replacement parts supplied by SKYTRON, for products under warranty, which shall be covered for any remaining period of the original product warranty, or for 90 days, whichever is of greater benefit to the ultimate user.

SKYTRON’s responsibility and liability shall be limited to the repair or replacement of any part which we, SKYTRON, determine to be defective within the applicable warranty period. Minor adjustments required as a result of normal wear during the use of the product within the warranty period are not covered under warranty. The labor portion of this warranty is covered by SKYTRON’s Authorized Service Agent. Repairs made by others are not authorized nor covered by SKYTRON with respect to labor costs.

SKYTRON shall not be liable for any other expense, loss or damage, whether direct, incidental, consequential or exemplary arising in connection with the sale or use of or the inability to use SKYTRON products.

NO EXPRESS WARRANTY IS GIVEN BY SKYTRON WITH RESPECT TO ITS PRODUCTS EXCEPT AS SPECIFICALLY SET FORTH HEREIN. ANY WARRANTY IMPLIED BY LAW, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, IS EXPRESSLY LIMITED TO THE TWO-YEAR AND 90-DAY TERMS SET FORTH ABOVE. THE FOREGOING STATEMENTS OF WARRANTY ARE EXCLUSIVE AND IN LIEU OF ALL OTHER REMEDIES.

No dealer, agent, employee or other representative of SKYTRON is authorized to extend or enlarge this warranty.

4/00

Although current at the time of publication, SKYTRON’s policy of continuous development makes this manual subject to change without notice.

TABLE OF CONTENTS

Title Page

SPECIAL USER ATTENTION.............................................................................................................1

SECTION I INTRODUCTION..............................................................................................................2

1-1. General ....................................................................................................................................2

1-2. Power Requirements ...............................................................................................................2

1-3. Pendant Control Unit...............................................................................................................3

1-4. Floor Lock / Brake System.......................................................................................................3

SECTION II OPERATION ...................................................................................................................4

2-1. Electrical Power .......................................................................................................................4

2-2. Pendant Control Unit................................................................................................................4

2-3. Leg Section ..............................................................................................................................6

2-4. X-ray Cassette Tray . ...............................................................................................................7

SECTION III MAINTENANCE .............................................................................................................8

3-1. Preventive Maintenance ..........................................................................................................8

3-2. Service .....................................................................................................................................8

SPECIAL USER INFORMATION

The extreme positioning capabilities of the 3100 series tables requires special attention for possible interference points when using multiple function positioning. As with the operation of any surgical table, a certain amount of care should be exercised to position the patient safely. Although the thick pads and sheets substantially protect the patient, pinch points, located at the joints of the top section should always be considered. BE SURE THAT THE ARMS, HANDS AND FINGERS OF THE PATIENT, AND THOSE OF THE OPERATING ROOM PERSONNEL, ARE CLEAR OF ALL MOVING PARTS BEFORE MOVING THE TABLE. Proper restraints should always be used for patient safety.

Certain accessories can be damaged when changing the position of the table top sections. Always look first to see if a desired movement is going to interfere with any accessories in use.

The operator has the ultimate responsibility of preventing damage or possible injury. In general, common sense will dictate when there is a potential hazard.

The following precautions should be reviewed by all personnel prior to operating the table.

WARNING

DO NOT use the table in the presence of FLAMABLE GASES.

NOTE

In case of a power failure or an electrical problem within the table, the emergency brake release system can be used to move the table. The control lever for this function is located on the side of the table base and is identified by an EMERGENCY BRAKE RELEASE label. Turn the lever counterclockwise to release the brakes.

NOTE

The Emergency Brake Release Valve must be closed before any hydraulic function will operate.

IMPORTANT

•The Emergency Brake Release Valve must be tightened securely when not in use.

•If the Emergency Brake Release Valve has been operated, the BRAKE UNLOCK button on the pendant control will have to be pressed before brakes will lock again.

NOTE

The table will lift and articulate a patient weight of 500 pounds assuming normal positioning of the patient.

NOTE

Activating any function button will activate the brake system. Using the TABLE UP function to set the brakes provides a visual assurance that the brakes are locked. As the brake cylinders are extending, the entire table will move slightly. When the table top begins to elevate, the brakes are fully locked.

WARNING

DO NOT unlock brakes when a patient is on the table. An uneven patient weight load may cause instability.

SECTION I INTRODUCTION

CASSETTE TRA Y POSITIONING GUIDE

1-1. General

LEG SECTION

KIDNEY BRIDGE

Figure 1-1. Model 3100 Surgical Table

X-RAY CASSETTE TRAVEL INDICATOR

X-RAY CASSETTE POSITIONING CRANK

PENDANT CONTROL

ELECTRICAL ENCLOSURE

SKYTRON’s Model 3100 and 3100A surgical tables are electro-hydraulically operated surgical tables with special x-ray equipment compatibility features. See figure 1-1.

A longitudinal top slide capability of 23-1/2 inches allows clearance for C-arm coverage of 58-3/4 inches without the need to reposition the patient. Xray cassettes can be loaded into a movable tray from the head end of the table. A manual hand crank system allows cassette positioning throughout an unobstructed range of 65 inches. A travel indicator next to the hand crank indicates where the center of the cassette tray is located in relation to the positioning guide on the side of the table for precise x-ray positioning. The full radiographic table top allows clear sharp x-rays throughout the cassette travel range.

The hydraulically-operated (built-in) kidney bridge on the Model 3100 is made up of movable table top sections. This allows total unobstructed radiographic capability with the kidney bridge in use. The kidney bridge is not available on Model 3100A.

Manual controls are provided for cassette tray positioning, emergency brake release, and leg section removal.

1-2. Power Requirements

The Elite 3100 series tables require a 120VAC, 60 Hz electrical power supply. The table is equipped with a 15 foot long, power cord with a standard three prong, hospital grade plug. The electrical protection fuses are located on the front edge of the base. See figure 1-2. The main power ON/ OFF switch is located on the electrical enclosure.

ELECTRICAL ENCLOSURE

COVER PLATE

POWER CORD

MAIN POWER SWITCH

The push button, pendant control unit operates the kidney bridge function (Model 3100) as well as the trendelenburg, lateral tilt, top slide, elevation, and the floor lock/brake system functions.

FUSE

Figure 1-2. Power Switch and Fuse Location

1-3. Pendant Control Unit

The hand-held pendant control unit (figure 1-3) has a non slip rubber cover which assures a positive grip during use. A spring clip hanger located on the back of the control allows it to be stored on the table side rails.

CLIP

TREND

REV.

TILT

TREND

RIGHT

TILT

TABLE

LEFT

DOWN

TABLE

SLIDE

HEAD

SLIDE

KIDNEY

FOOT

DOWN

KIDNEY

BRAKE

UNLOCK

RETURN

POWER ON

PRESS TO LOCK BRAKES

POWER

INDICATOR

FUNCTION

BUTTONS

Figure 1-3. Pendant Control Unit

The function push buttons are identified with abbreviated descriptions for all functions. See figure 1-4. The trendelenburg and table up buttons are red, the remaining buttons are all black.

TRENDELENBURG

REVERSE

LA TERAL TIL T LEFT

TABLE UP

SLIDE FOOT END

KIDNEY BRIDGE UP

(3100)

RETURN

REV.

TREND.

TILT

LEFT

TABLE

SLIDE

FOOT

KIDNEY

RETURN

* PRESS TO LOCK BRAKES

TREND

TILT

RIGHT

TABLE DOWN

SLIDE

LEG

KIDNEY DOWN

BRAKE

UNLOCK

POWER ON

TRENDELENBURG LA TERAL TIL T RIGHT TABLE DOWN SLIDE HEAD END KIDNEY BRIDGE DOWN

(3100)

BRAKE RELEASE

POWER ON INDICATOR

Figure 1-4. Function Push Buttons

NOTE

To unlock the brakes, press the BRAKE UNLOCK button and release. The brakes will retract automatically in approximately 7-8 seconds.

WARNING

DO NOT unlock brakes when a patient is on the table. An uneven patient weight load may cause instability.

NOTE

The Emergency Brake Release Valve must be closed before any hydraulic function will operate.

IMPORTANT

•The Emergency Brake Release Valve must be tightened securely when not in use.

•If the Emergency Brake Release Valve has been operated, the BRAKE UNLOCK button on the pendant control will have to be pressed before brakes will lock again.

1-4. Floor Lock/Brake System

The floor lock/brake system consists of four selfleveling, hydraulic brake cylinders which raise and support the table base off from the casters. Press the TABLE UP button on the pendant control to set the table’s brakes. An electronic timer in the brake circuit will activate the brake system until the brakes are completely set, approximately 8-10 seconds.

SECTION II OPERATION

2-1. Electrical Power

a. Check to be sure power cord is plugged into

120VAC outlet.

IMPORTANT

Prior to operating the table, review the SPECIAL USER ATTENTION section on page 1.

b. Depress “Main Power ON/OFF” switch on the electrical enclosure. See figure 2-1. The green Power On indicator light on the pendant control unit should now be illuminated.

POWER CORD

MAIN POWER SWITCH

ELECTRICAL ENCLOSURE

a. Floor Lock/Brake System. To activate the brakes without affecting table positioning, press the TABLE UP button. See figure 2-3. The elevation cylinder will not function until the brakes are completely extended. An electronic timer in the brake circuit will activate the brake system until the brakes are completely set, approximately 8-10 seconds.

REV.

TREND

TREND.

TILT

RIGHT

LEFT

TABLE

DOWN

SLIDE

HEAD

TABLE UP

KIDNEY

RETURN

FOOT

KIDNEY

DOWN

BRAKE

UNLOCK

POWER ON

BRAKE RELEASE

PRESS TO UNLOCK BRAKES

Figure 2-3. Brake System Activation

Figure 2-1. Main Power Switch

2-2. Pendant Control Unit

The hand-held pendant control unit (figure 2-2) activates the following table functions:

TRENDELENBURG

REVERSE

LA TERAL TIL T LEFT

TABLE UP

SLIDE FOOT END

KIDNEY BRIDGE UP

(3100)

RETURN

REV.

TREND.

TILT

LEFT

TABLE

SLIDE

FOOT

KIDNEY

RETURN

TREND

TILT

RIGHT

TABLE

DOWN

SLIDE

LEG

KIDNEY

DOWN

BRAKE

UNLOCK

POWER ON

TRENDELENBURG LA TERAL TIL T RIGHT TABLE DOWN SLIDE HEAD END KIDNEY BRIDGE DOWN

(3100)

BRAKE RELEASE

POWER ON INDICATOR

Press the BRAKE UNLOCK button on the pendant control to release the four self-leveling brake feet in order to move the table. See figure 2-3. The brake delay circuit automatically retracts the brake system with just one press of the BRAKE UNLOCK button. It takes approximately 7-8 seconds to totally release the system.

WARNING

DO NOT unlock brakes when a patient is on the table. An uneven patient weight load may cause instability.

b. Emergency Brake Release. In case of a power failure or an electrical problem within the table, an emergency brake release system can be used to move the table. The control lever for this function is located on the side of the table base and is identified by an EMERGENCY BRAKE RELEASE label. Turn the lever counterclockwise to release the brakes. See figure 2-4.

* PRESS TO LOCK BRAKES

Figure 2-2. Pendant Control Unit

Figure 2-4. Emergency Brake Release

NOTE

The Emergency Brake Release Valve must be closed before any hydraulic function will operate.

IMPORTANT

•The Emergency Brake Release Valve must be tightened securely when not in use.

d. Lateral Tilt. To achieve lateral tilt right (as viewed from the head end of the table), press the TILT RIGHT button (figure 2-6). Tilt of up to 20° may be obtained. To achieve lateral tilt left, press the TILT LEFT button. Tilt of up to 20° may be obtained.

REV.

TREND

TREND.

TILT

RIGHT

LATERAL TILT LEFT

20˚

LEFT

TABLE

DOWN

SLIDE

HEAD

FOOT

KIDNEY

DOWN

BRAKE

RETURN

UNLOCK

POWER ON

PRESS TO UNLOCK BRAKES

LATERAL TILT RIGHT

20˚

•If the Emergency Brake Release Valve has been operated, the BRAKE UNLOCK button on the pendant control will have to be pressed before brakes will lock again.

c. Trendelenburg. To place the surgical table in a trendelenburg (head down) position, press the TREND button. See figure 2-5. Tilt of up to 20° may be obtained. To place the table in a reverse trendelenburg (head up) position, press the REV TREND button. Tilt of up to 20° may be obtained.

REVERSE TRENDELENBURG

20˚

REV.

TREND.

TILT LEFT

TABLE

SLIDE

FOOT

KIDNEY

RETURN

PRESS TO UNLOCK BRAKES

TRENDELENBURG

TREND

TILT

RIGHT

TABLE DOWN

SLIDE HEAD

KIDNEY

DOWN

BRAKE UNLOCK

POWER ON

Figure 2-6. Lateral Tilt Positioning

e. Elevation. To raise table top, press the

TABLE UP button (figure 2-7.). The table will lift a patient weight of 500 pounds up to a maximum height of 40". To lower the table top, press the TABLE DOWN button. The table top will go down to a minimum height of 29".

REV.

TREND

TREND.

TILT

RIGHT

LEFT

TABLE

40"

29"

TABLE UP

DOWN

SLIDE

HEAD

FOOT

KIDNEY

DOWN

BRAKE

RETURN

UNLOCK

POWER ON

PRESS TO UNLOCK BRAKES

TABLE DOWN

Figure 2-5. Trendelenburg Positioning

Figure 2-7. Elevation Function

f. Slide Function. To move the table top toward

POWER ON

REV.

TREND.

TILT LEFT

RETURN

TABLE

SLIDE FOOT

KIDNEY

TREND

TILT

RIGHT

TABLE

DOWN

SLIDE

HEAD

KIDNEY

DOWN

BRAKE

UNLOCK

PRESS TO UNLOCK BRAKES

RETURN

the foot end of the table, push the SLIDE-FOOT button. See figure 2-8.

REV.

TREND

TREND.

TILT

RIGHT

LEFT

TABLE

DOWN

SLIDE

HEAD

FOOT

KIDNEY

DOWN

SLIDE FOOT END

BRAKE

RETURN

UNLOCK

POWER ON

PRESS TO UNLOCK BRAKES

Figure 2-8. Slide-Foot Function

The table top will move longitudinally up to 23-1/2 inches. To return the table top to normal position, push the SLIDE-HEAD button. See figure 2-9.

To lower the kidney bridge, push the KIDNEYDOWN button.

h. Return Function. Pushing the RETURN button will return the table top to a level position from lateral tilt and/or trendelenburg positions. See figure 2-11.

Figure 2-11. Return Function

2-3. Leg Section

REV.

TREND

TREND.

TILT

RIGHT

LEFT

TABLE

DOWN

SLIDE

HEAD

FOOT

KIDNEY

DOWN

BRAKE

RETURN

UNLOCK

POWER ON

PRESS TO UNLOCK BRAKES

SLIDE HEAD END

Figure 2-9. Slide-Head Function

g. Kidney Bridge (Model 3100). To raise the

kidney bridge, push the KIDNEY-UP button. See figure 2-10.

REV.

TREND

TREND.

TILT

RIGHT

LEFT

TABLE

DOWN

SLIDE

HEAD

Figure 2-10. Kidney Bridge-Up Function

KIDNEY BRIDGE UP

FOOT

KIDNEY

DOWN

BRAKE

RETURN

UNLOCK

POWER ON

PRESS TO UNLOCK BRAKES

KIDNEY BRIDGE DOWN

For perineal access, the leg section can be easily removed from the table. To remove the section, rotate both locking handles outward and pull the leg section straight out. Reverse the procedure to install the section. See figure 2-12.

LOCK HANDLE (2)

Figure 2-12. Leg Section Removal

2-4. X-ray Cassette Tray

X-ray cassettes can be inserted into a positionable tray at the head end of the table. See figure 2-13. The cassette can be positioned for x-ray coverage of up to 65 inches from the head end of the table. The removable tray attaches to the drive mechanism with magnets. To position the cassette tray within the table, rotate the manual crank handle located on the side of the table. A positioning guide on the sides of the table corresponds with the travel indicator for precise cassette positioning. Use the positioning guide (if the guide is not visible due to table draping, a measuring tape can be used) to determine the desired location for the cassette. Insert the cassette into the tray and rotate the manual crank until the desired position is achieved on the travel indicator.

CASSETTE

TRAVEL INDICATOR

POSITIONING GUIDE

MANUAL CRANK

TRAY

Figure 2-13. X-ray Cassette Tray

HEAD END OF T ABLE

SECTION III MAINTENANCE

3-1. Preventive Maintenance

The following preventive maintenance checks and services are recommended to ensure the serviceability and proper operation of your SKYTRON surgical table.

a. During normal cleaning, a general visual examination should be made checking for leaks, loose bolts or parts, and cracked, chipped, or missing paint. Any necessary repairs should be made.

b. Semi-annually the following checks and services should be performed:

1. Check all hydraulic fittings, mini valves and slave cylinders for proper operation and any signs of leaks.

2. Check the hydraulic speed controls and adjust if necessary.

3-2. Service

Table maintenance can be performed by trained maintenance personnel using SKYTRON authorized replacement parts and service techniques. Service instructions and parts are available from SKYTRON.

To obtain service instructions, replacement parts, factory service or preventive maintenance contracts, contact your nearest SKYTRON representative or write:

SKYTRON 5000 36th Street S.E. Grand Rapids, MI 49512 1-800-SKYTRON

3. Pressure check (with a gauge) the pressure relief valve.

4. Check all mechanical adjustments and adjust as necessary.

5. Check hydraulic fluid level.

6. Lubricate the slider assembly.

5000 36th Street S.E., Grand Rapids, MI 49512

1-800-SKYTRON or 1-616-957-0500 • FAX 1-616-957-5053

PARTS CATALOG

3100 ELITE SERIES

SURGICAL TABLES

Page 1

Item Part No. Description Qty.

This section contains the exploded views andreplacementpartslistsfor the serviceable components ofthe SKYTRON Model 3100 surgical table.

Each serviceable part in these exploded views is identified byareference number.Use this number to locate necessary part information in the parts list adjacent to the exploded view.

Always use the complete SKYTRON part number, description and Serial Number whenordering replacementparts.

INTRODUCTION

Abbreviations

As Required .......................................... A/R

Optional ................................................... opt

Serial Nimber ........................................ S.N.

TABLE OF CONTENTS

Figure Page

1. Top & Side Frame Assemblies ................................................................................ 2

2. Side Frame & Cassette Tray Assemblies ................................................................ 6

3. Support Column Assembly .................................................................................... 10

4. Lateral Tilt & Side Frame Assembly ....................................................................... 14

5. Electrical Components ........................................................................................... 18

6. Hydraulic Valves & Fittings .................................................................................... 22

7. Brake Systems, S.N.3100-1989-11-273&P ........................................................... 26

8. Base & Power Switch ............................................................................................ 28

9. Special Tools & Maintenance Items ....................................................................... 32

10/01

Although current at time of publicatiion, SKYTRON's policy of continuous development makes this manual subject to change without notice.

Page ii

5. Electrical Components . . . . . . . . . . . . . . . . . . . . . . Page 18 6. Hydraulic Valves & Fittings . . . . . . . . . . . . . . . . . Page 22

7. Brake Systems, S.N.3100-1989-11-273&P . . . . . . Page 26 8. Base & Power Switch . . . . . . . . . . . . . . . . . . . . . . Page 28

Page i

1. Top & Side Frame Assemblies . . . . . . . . . . . . . . . . . Page 2 2. Side Frame & Hydraulic Cylinders . . . . . . . . . . . . . Page 6

3. Support Column Assembly . . . . . . . . . . . . . . . . . . . Page 10 4. Lateral Tilt & Side Frame Assembly . . . . . . . . . . . Page 14

Page 2

1. TOP & SIDE FRAME ASSEMBLIES

Item Part No. Description Qty.

1-010-12-P PAD, set, 2" ................................................................................................................. opt

1 1-010-12-8P PAD, back/seat section 2" ........................................................................................... opt

2 1-010-12-4P PAD, foot/leg section 2" .............................................................................................. opt

3 D3-060-05 TOP, foot/leg section .................................................................................................... 1

4 D3-060-04-2 TOP, seat section, S.N.3100-1987-6-129&L ............................................................... 1

D3-060-04-1 TOP, seat section, S.N.3100-1987-6-128&P ............................................................... 1

5 D3-060-02-2 TOP, back section, S.N.3100-1987-6-129&L .............................................................. 2

D3-060-02 TOP, back section, S.N.3100-1987-6-128&P .............................................................. 2

6 D3-060-03-2 TOP, kidney bridge, S.N.3100-1987-6-129&L ............................................................ 1

D3-060-03 TOP, kidney bridge, S.N.3100-1987-6-128&P ............................................................ 1

7 D3-060-01-2 TOP, head section, S.N.3100-1987-6-129&L ............................................................. 1

D3-060-01 TOP, head section, S.N.3100-1987-6-128&P ............................................................. 1

D3-060-58 TOP, seat/back, 3100A ................................................................................................ 1

8 D3-010-19 SCREW, phillips head, M5x15 (plated) ...................................................................... A/R

D6-010-58-1 SCREW, phillips head, M5x20 (plated) ...................................................................... A/R

9 D3-060-31 RETAINER, head section top ...................................................................................... 2

10 D6-060-39 CIRCLIP ....................................................................................................................... 8

11 D6-060-01 PIN, clevis 8x25 ........................................................................................................... 4

12 D3-060-56 PIVOT ASSEMBLY ....................................................................................................... 4

13 D3-060-57 HINGE ASSEMBLY, kidney bridge .............................................................................. 2

14 D3-060-12 SIDE FRAME, foot/leg section, left ............................................................................... 1

15 D3-060-06 SIDE FRAME, foot/leg section, right ............................................................................ 1

16 D3-060-10 GUIDE, cassette tray .................................................................................................... 1

17 D6-010-80 SCREW, phillips head, M3x6 ..................................................................................... 22

18 D3-060-11 STOP ASSEMBLY, cassette tray ................................................................................. 1

19 D6-010-70-1 BOLT, allen, M5x10 (plated) ........................................................................................ 4

20 D3-060-07 SIDE RAIL, foot/leg section (right) ............................................................................... 1

D3-060-08 SIDE RAIL, foot/leg section (left) .................................................................................. 1

21 D6-010-12-1 SCREW, allen head M8x45 (plated) ........................................................................... 8

22 D3-010-01 COLLAR, side rail ....................................................................................................... 22

23 D6-010-09-1 WASHER, lock, M8 (plated) ......................................................................................... 8

24 D6-010-13-1 NUT, M8 (plated) .......................................................................................................... 8

D6-032-34 NUT, M8 w/ lock washer .............................................................................................. 8

25 D4-060-01 CYLINDER ASSEMBLY, kidney bridge ...................................................................... 2

26 D4-060-08 •TAIL CASTING, cylinder ............................................................................................. 2

27 D4-060-04 •O-RING, P-15 .............................................................................................................. 6

28 D4-060-07 •TUBE, cylinder ............................................................................................................ 2

29 D6-060-03 •NUT, hex ..................................................................................................................... 2

30 D6-060-02 •WASHER, lock ............................................................................................................ 2

31 D4-060-06 •PISTON ....................................................................................................................... 2

32 D4-010-19 •O-RING, P-6 ................................................................................................................ 2

33 D4-060-05 •SPACER, piston .......................................................................................................... 2

34 D4-060-03 •END CAP, cylinder ..................................................................................................... 2

35 D4-060-65 •SEAL, PS-8 ................................................................................................................. 2

36 D4-010-02 •O-RING, P-14 .............................................................................................................. 2

37 D4-060-02 •GUIDE, cylinder rod .................................................................................................... 2

38 D4-060-09 •ROD, cylinder ............................................................................................................. 2

Page 3

Page 4

1. TOP & SIDE FRAME ASSEMBLIES (CONTINUED)

Item Part No. Description Qty.

39 D6-010-13 •NUT, M8 ...................................................................................................................... 2

40 D4-060-10 •CLEVIS ....................................................................................................................... 2

41 D4-060-11 HOSE, flexible .............................................................................................................. 2

42 D4-060-12 ELBOW, 90° ................................................................................................................. 4

43 D4-060-53 HOSE, flexible .............................................................................................................. 2

44 D6-010-17 BOLT, allen, M8x15 .................................................................................................... 14

45 D6-010-09 WASHER, lock, M8 ..................................................................................................... 14

46 D3-060-29 UPPER SIDE FRAME, right ......................................................................................... 1

D3-060-29-1 UPPER SIDE FRAME, right, 3100A ............................................................................ 1

47 D6-010-28 BOLT, allen, M5x6 ....................................................................................................... 8

48 D6-060-08 SPACER, roller ............................................................................................................ 4

49 D6-060-09 ROLLER ....................................................................................................................... 4

50 D6-060-10 PIN ............................................................................................................................... 4

51 D6-060-11 CIRCLIP, E4 ................................................................................................................. 8

52 D3-060-30 GUIDE, cassette tray (right) ......................................................................................... 1

53 D3-060-32 COVER PLATE, head end ........................................................................................... 1

54 D6-060-13 BRACKET, handle storage .......................................................................................... 1

55 D3-060-33 ACCESSORY RAIL ...................................................................................................... 1

56 D6-060-07 BOLT, allen, M4x8 ...................................................................................................... 10

57 D3-060-28 GUIDE, top retaining .................................................................................................... 2

58 D3-060-27-1 CHANNEL, bearing, right ............................................................................................ 1

59 D3-060-14-1 HOUSING, foot/leg section lock (right) ........................................................................ 1

D3-060-14-2 HOUSING, foot/leg section lock (left) ........................................................................... 1

60 D3-060-15 PLATE, end (right) ....................................................................................................... 1

61 D6-050-31-1 SCREW, phillips head, M5x15 (plated) ....................................................................... 3

62 D3-060-16 LOCK HANDLE, foot/leg section ................................................................................. 2

63 D3-060-17 •KNOB, lock handle ..................................................................................................... 2

64 D3-060-18 SPACER, lock handle .................................................................................................. 2

65 D6-060-14 PIN, tapered, M8x30 .................................................................................................... 4

66 D6-010-33 BOLT, allen, M8x25 ..................................................................................................... 4

67 D3-060-19 SPRING ........................................................................................................................ 2

68 D3-060-20 PLUNGER, lock ........................................................................................................... 2

69 D3-060-21 CAM, lock ..................................................................................................................... 2

70 D6-060-05 PIN, roll M5x25 ............................................................................................................. 4

71 D3-060-13 NUT, special, M8 ......................................................................................................... 14

72 D3-060-26 COVER, side frame, right ............................................................................................. 1

73 D6-060-44-1 SCREW, phillips head, M8x35 (plated) ...................................................................... 14

74 D3-060-23 SIDE RAIL, right ........................................................................................................... 1

D3-060-24 SIDE RAIL, left ............................................................................................................. 1

75 D3-010-41 •PIN, rail stop ................................................................................................................ 2

76 D3-010-43 •STOP, rail, large .......................................................................................................... 2

77 D3-060-25-1 SCALE, cassette tray positioning, right (self adhesive) .............................................. 1

D3-060-25 SCALE, cassette tray positioning, right ....................................................................... 1

D3-060-09-1 SCALE, cassette tray positioning, left (self adhesive) ................................................. 1

D3-060-09 SCALE, cassette tray positioning, left .......................................................................... 1

78 D6-060-06 SCREW, phillips head, M3x6 ...................................................................................... 6

79 D6-010-57 SCREW, phillips head, M4x10 .................................................................................... 5

Page 5

Page 6

2. SIDE FRAME & CASSETTE TRAY ASSEMBLIES

Item Part No. Description Qty.

D6-060-18-A HANDLE ASSEMBLY, cassette drive .......................................................................... 1

1 D6-010-70-1 •BOLT, allen, M5x10 (plated) ....................................................................................... 1

2 D6-010-77-1 •WASHER, lock, M5 (plated)........................................................................................ 1

3 D6-060-17 •GRIP, handle .............................................................................................................. 1

4 D6-060-18 •HANDLE, cassette drive ............................................................................................. 1

5 D6-060-19 PIN, 4x20 ...................................................................................................................... 1

6 D3-060-34 SHAFT, sprocket drive ................................................................................................. 1

7 D3-060-36 COVER, side frame, left ............................................................................................... 1

8 D6-010-41-1 NUT, M6 (plated) .......................................................................................................... 3

9 D4-060-13 CYLINDER ASSEMBLY, slide function ....................................................................... 1

10 D4-060-14 •ROD, cylinder ............................................................................................................. 1

11 D4-060-15 •SEAL CAP, cylinder rod .............................................................................................. 2

12 D4-060-04 •O-RING, P-15 .............................................................................................................. 5

13 D4-060-66 •SEAL, PS-6 ................................................................................................................. 2

14 D4-060-16 •END CAP, cylinder mounting ..................................................................................... 1

15 D4-060-17 •TUBE, cylinder ............................................................................................................ 1

16 D4-060-18 •PISTON, cylinder ........................................................................................................ 1

17 D4-060-19 •END CAP .................................................................................................................... 1

18 D4-060-20 •ROD, cylinder ............................................................................................................. 1

19 D4-010-08 O-RING, P-7 ................................................................................................................. 4

20 D4-010-24 BOLT, plumbing, M6 .................................................................................................... 2

21 D4-060-21 CYLINDER PIPING, slide cylinder (rear) ..................................................................... 1

D4-060-22 CYLINDER PIPING, slide cylinder (front) .................................................................... 1

22 D6-010-85 WASHER, flat, M6 ........................................................................................................ 2

23 D6-060-45 CIRCLIP ....................................................................................................................... 1

24 D6-060-46 SHAFT, sprocket .......................................................................................................... 1

25 D6-060-47 ECCENTRIC BUSHING ............................................................................................... 1

26 D6-060-21 SCREW, set, M5x6 ....................................................................................................... 2

27 D6-050-31-1 SCREW, phillips head, M5x15 ................................................................................... 12

28 D3-060-37 PLATE, end (left) .......................................................................................................... 1

29 D6-060-23 PIN, roll, M3x15 ............................................................................................................ 2

30 D6-060-20 SPROCKET, SW 1/4S11-B .......................................................................................... 2

31 D6-010-57 SCREW, phillips head, M4x10 ...................................................................................A/R

32 D3-060-46-1 CHANNEL, bearing (left) ............................................................................................. 1

33 D3-060-47 GUIDE, cassette tray (left) ............................................................................................ 1

34 D6-060-25 NUT, M3 ....................................................................................................................... 4

35 D3-060-48 PLATE, retainer ............................................................................................................ 1

36 D6-060-24 CHAIN, roller ................................................................................................................ 1

37 D3-060-49 GUARD, chain ............................................................................................................. 1

38 D3-060-50 HOLDER, cassette tray ................................................................................................ 1

D3-060-50-1 •MAGNET ..................................................................................................................... 2

39 D3-060-51 TRAY, cassette ............................................................................................................. 1

40 D6-060-26 SCREW, phillips head M3x15 ..................................................................................... 2

41 D3-060-41 MEASURING TAPE ..................................................................................................... 1

42 D3-060-42 BRACKET ASSEMBLY, measuring tape ..................................................................... 1

43 D3-060-45 ROLLER ....................................................................................................................... 1

Page 7

Page 8

2. SIDE FRAME & CASSETTE TRAY ASSEMBLIES (CONTINUED)

Item Part No. Description Qty.

44 D6-010-80 SCREW, phillips head, M3x6 ...................................................................................... 4

45 D3-060-44 COVER, measuring tape ............................................................................................. 1

46 D3-060-43 LENS (red line) 3100-601&P, 3100A-035&P .............................................................. 1

D3-060-43-1 LENS (black triangle) 3100-602&L, 3100A-036&L ..................................................... 1

47 D6-060-22 SCREW, phillips head, M3x10 .................................................................................... 2

48 D6-010-70 BOLT, allen, M5x10 ..................................................................................................... 3

49 D3-060-39 UPPER SIDE FRAME (left) .......................................................................................... 1

D3-060-39-1 UPPER SIDE FRAME (left) 3100A .............................................................................. 1

50 D6-010-28 BOLT, allen, M5x6 ....................................................................................................... 8

51 D3-060-35 ECCENTRIC BUSHING ............................................................................................... 1

Page 9

Page 10

3. SUPPORT COLUMN ASSEMBLY

Item Part No. Description Qty.

1 D4-060-68 CYLINDER ASSYEMBLY, trendelenburg 1994-11-561&L ........................................ 1

D4-060-27 CYLINDER ASSEMBLY, trendelenburg 1994-11-560&P ........................................... 1

2 D4-010-56 •O-RING, P-10A ........................................................................................................... 1

3 D4-060-31 •PISTON ....................................................................................................................... 1

4 D4-010-05 •O-RING, P-50A ........................................................................................................... 1

5 D6-010-42 •WASHER, lock, M10 ................................................................................................... 1

6 D6-010-43 •NUT, M10 .................................................................................................................... 1

7 D4-010-13 •O-RING, G-55 ............................................................................................................. 2

7A D4-010-59 •O-RING, P-55 (for D4-060-68) .................................................................................... 1

D4-010-13 •O-RING, G-55 (for D4-060-27) ................................................................................... 1

8 D4-060-28 •NUT, cylinder tail section ............................................................................................ 2

9 D4-060-23 •O-RING, P-20 .............................................................................................................. 1

10 D6-010-28 BOLT, allen, M5x6 ....................................................................................................... 1

11 D4-060-36 RETAINER NUT, ball joint ........................................................................................... 1

12 D2-060-37 BEARING ASSEMBLY, trendelenburg cylinder .......................................................... 1

13 D4-010-11 O-RING, KS-8 ............................................................................................................... 4

14 D4-060-26 FITTING, hydraulic, 90° elbow, long ............................................................................ 1

D4-060-26-1 FITTING, hydraulic, 90° elbow, short ........................................................................... 1

15 D4-060-67 BOLT, plumbing, M8 .................................................................................................... 2

16 D4-060-37 HOSE, flexible .............................................................................................................. 1

17 D4-060-25 HOSE, flexible .............................................................................................................. 1

18 D2-060-01 SLIDER ........................................................................................................................ 1

19 D2-060-08 FLANGE, cylinder mounting ........................................................................................ 1

20 D6-010-54 BOLT, allen, M8x30 ..................................................................................................... 4

21 D2-060-09 AXIS, trendelenburg cylinder ....................................................................................... 1

22 D6-060-30 RING, retaining ............................................................................................................ 2

23 D2-060-35 STOP, bearing ............................................................................................................. 1

24 D6-010-10-3 BOLT, allen, M4x10 ..................................................................................................... 7

25 D2-060-02 STOP, needle bearing, upper ...................................................................................... 2

26 D2-060-03 NEEDLE BEARING ASSEMBLY ................................................................................ 12

27 D2-060-38 BEARING RACE .......................................................................................................... 1

28 D2-060-33 CUSHION, dropping .................................................................................................... 2

29 D2-060-32 PIN, stop....................................................................................................................... 1

30 D2-060-31 STOP, bearing ............................................................................................................. 1

31 D2-060-41 HOLDER, slider, S.N.3100-1992-8-441&L ................................................................. 1

D2-060-05 HOLDER, slider, S.N.3100-1992-8-440&P ................................................................. 1

32 D6-060-34 SET SCREW, M8x10 .................................................................................................. 16

33 D2-060-04 STOP, needle bearing, lower ...................................................................................... 2

D2-060-04-1 STOP, needle bearing, lower (small) .......................................................................... 2

34 D6-060-40 SCREW, phillips head ................................................................................................. 7

35 D6-060-27 BOLT, allen, M12x45 ................................................................................................... 4

36 D6-060-28 SCREW, round head, M5x10 ...................................................................................... 3

D6-050-36-1 BOLT, allen, M5x8 ....................................................................................................... 3

37 D2-060-36 STOP, bearing ............................................................................................................. 2

38 D6-010-59 •NUT, M4 ...................................................................................................................... 2

39 D2-060-42 SHROUD, elevation, outer, S.N.3100-1992-8-441&L ................................................. 1

D2-060-07 SHROUD, elevation, outer, S.N.3100-1992-8-440&P ................................................ 1

40 D2-060-43 SHROUD, elevation, inner, S.N.3100-1992-8-441&L ................................................. 1

D2-060-06 SHROUD, elevation, inner, S.N.3100-1992-8-440&P ................................................ 1

Page 11

Page 12

3. SUPPORT COLUMN ASSEMBLY (CONTINUED)

Item Part No. Description Qty.

41 D6-010-49 SCREW, phillips head, M5x12, S.N.3100-1992-8-441&L .......................................... 4

D6-070-26 SCREW, phillips head, M5x10, S.N.3100-1992-8-440&P .......................................... 3

42 D4-060-38 CYLINDER ASSEMBLY, elevation .............................................................................. 1

43 D4-060-39 •ROD, piston, elevation cylinder .................................................................................. 1

44 D4-060-40 •END CAP, elevation cylinder ..................................................................................... 1

45 D4-010-56 •O-RING, P-10A ........................................................................................................... 1

46 D4-060-41 •PISTON, elevation cylinder ........................................................................................ 1

47 D4-010-12 •O-RING, P-24 .............................................................................................................. 1

48 D6-010-42 •WASHER .................................................................................................................... 1

49 D6-010-43 •NUT ............................................................................................................................. 1

50 D4-060-42 •TUBE, elevation cylinder ............................................................................................ 1

51 D4-010-54 •O-RING, P-34 .............................................................................................................. 1

52 D4-060-43-1 •SAUCER, elevation cylinder, S.N.3100-1992-8-441&L ............................................ 1

D4-060-43 •SAUCER, elevation cylinder, S.N.3100-1992-8-440&P ............................................ 1

53 D4-010-51 O-RING, P-16 ............................................................................................................... 1

54 D1-060-01 GUARD, hose, S.N.3100-1992-8-440&P .................................................................... 2

55 D4-010-32 PACKING, copper ........................................................................................................ 1

56 D4-010-31 FITTING, flexible hose ................................................................................................. 1

57 D4-060-44 HOSE, flexible, 200mm ................................................................................................ 1

58 D6-060-32 WASHER, special ........................................................................................................ 1

59 D6-010-51 BOLT, allen, M6x10 ..................................................................................................... 1

Page 13

Page 14

4. LATERAL TILT & SIDE FRAME ASSEMBLY

Item Part No. Description Qty.

1 D2-060-10 COVER, center section ................................................................................................ 1

2 D6-060-07 SCREW, round head, M4x6 ........................................................................................ 4

3 D6-010-53 BOLT, allen, M8x20 ..................................................................................................... 6

4 D2-060-11 PLATE, center section ................................................................................................. 1

5 D6-010-91 BOLT, allen, M6x25 .................................................................................................... 10

6 D2-060-34 PLATE, trendelenburg pivot ........................................................................................ 1

7 D2-060-12 COVER, upper frame ................................................................................................... 1

8 D6-010-33 BOLT, allen, M8x25 ..................................................................................................... 4

9 D4-060-45 TERMINAL, plumbing, left ........................................................................................... 1

D4-060-46 TERMINAL, plumbing, right ......................................................................................... 1

10 D4-060-11 HOSE, flexible, 1200mm .............................................................................................. 2

11 D4-060-53 HOSE, flexible, 1400mm .............................................................................................. 2

12 D4-010-31 FITTING, flexible hose ................................................................................................. 2

13 D6-010-30-1 BOLT, allen, M6x20 (plated) ........................................................................................ 4

14 D4-060-47 CYLINDER PIPING, kidney bridge cylinder (left) ........................................................ 1

D4-060-51 CYLINDER PIPING, kidney bridge cylinder (right) ...................................................... 1

15 D4-060-48 CYLINDER PIPING, kidney bridge cylinder (left) ........................................................ 1

D4-060-52 CYLINDER PIPING, kidney bridge cylinder (right) ...................................................... 1

16 D4-010-24 BOLT, plumbing, M6 ................................................................................................... 12

17 D4-010-08 O-RING, P-7 ................................................................................................................ 24

18 D4-060-49 TERMINAL, plumbing .................................................................................................. 4

19 D4-060-21 CYLINDER PIPING, slide function cylinder (rear) ....................................................... 1

D4-060-22 CYLINDER PIPING, slide function cylinder (front) ...................................................... 1

20 D4-010-18 CAP, blind, M6 ............................................................................................................. 2

21 D4-060-50 HOSE, flexible, 1550mm .............................................................................................. 6

22 D6-010-45 BOLT, allen, M10x30 ................................................................................................... 4

23 D2-060-13 BRACKET, trendelenburg pivot ................................................................................... 2

24 D2-060-14 CAP, lateral tilt cylinder, left ......................................................................................... 1

25 D4-032-79 O-RING, S-55, S.N.3100-1992-10-461&L ................................................................... 2

26 D4-060-24 O-RING, P-49 ............................................................................................................... 4

27 D4-060-54 PISTON, lateral tilt ........................................................................................................ 2

28 D4-060-55 CONNECTING ROD, lateral tilt piston ......................................................................... 2

29 D2-060-15 HOUSING, lateral tilt cylinder ...................................................................................... 1

30 D2-060-16 AXIS, lateral tilt ............................................................................................................. 1

31 D2-060-17 CAP, lateral tilt cylinder, right ....................................................................................... 1

32 D6-060-38 SET SCREW, M5x10 ................................................................................................... 5

33 D2-060-40 NUT, trendelenburg axis .............................................................................................. 2

34 D4-010-29 FITTING, hydraulic, 90° elbow ..................................................................................... 2

35 D6-010-22 BOLT, allen, M12x35 ................................................................................................... 2

36 D2-060-20 COVER PLATE, trendelenburg cylinder ...................................................................... 1

37 D6-010-19 SCREW, phillips, M5x10 .............................................................................................. 2

38 D2-060-21 HEAD PLATE, slider .................................................................................................... 1

39 D2-060-22 SPACER, mounting plate ............................................................................................ 2

40 D2-060-23 PLATE, micro-switch mounting .................................................................................... 1

41 D6-060-36 BOLT, allen, M4x30 ..................................................................................................... 2

42 D6-060-28 SCREW, round head, M5x8 ........................................................................................ 2

Page 15

Page 16

4. LATERAL TILT & SIDE FRAME ASSEMBLY (CONTINUED)

Item Part No. Description Qty.

43 D2-060-24 COVER, micro-switch .................................................................................................. 1

44 D6-060-37 BOLT, allen, M3x20 ..................................................................................................... 8

45 D5-060-01 MICRO-SWITCH, V-1A ................................................................................................ 4

46 D2-060-19 PIN, lateral tilt ...............................................................................................................1

47 D2-060-18 CASTING, lateral tilt pivot ............................................................................................ 1

48 D6-060-35 BOLT, allen, M12x25 ................................................................................................... 2

49 D6-060-34 SET SCREW, M8x10 ................................................................................................... 1

50 D2-060-26 NUT, lateral tilt axis ...................................................................................................... 1

51 D2-060-25 ACTUATOR, micro-switch ........................................................................................... 1

52 D2-060-27 COVER, trendelenburg micro-switch .......................................................................... 1

53 D6-060-41 BOLT, allen M4x3 ........................................................................................................ 2

54 D2-060-28 BRACKET, micro-switch mounting .............................................................................. 1

55 D6-010-70 BOLT, allen, M5x10 ..................................................................................................... 2

56 D2-060-30 COVER, upper frame ................................................................................................... 1

57 D6-060-42 SCREW, round head, M5x10 ...................................................................................... 8

58 D2-060-29 ACTUATOR, micro-switch ........................................................................................... 1

59 D3-060-53 MAIN SIDE FRAME, left ............................................................................................... 1

D3-060-54 MAIN SIDE FRAME, right ............................................................................................. 1

60 D3-060-55 BEARING ASSEMBLY ................................................................................................ 16

61 D6-010-10-1 SET SCREW, M6x10 .................................................................................................. 16

Page 17

Page 18

5. ELECTRICAL COMPONENTS

Item Part No. Description Qty.

1 D5-060-21 PENDANT CONTROL ASSEMBLY (letters) ................................................................ 1

D5-060-15 PENDANT CONTROL ASSEMBLY (one touch) .......................................................... 1

D5-060-08 PENDANT CONTROL ASSEMBLY (w/Energize & Move) .......................................... 1

D5-060-02 PENDANT CONTROL ASSEMBLY (w/Energize) ....................................................... 1

2 D6-032-33 •SCREW, pendant hook, M4x12 .................................................................................. 3

3 D5-031-14 •HOOK, pendant .......................................................................................................... 1

4 D5-031-22 •COVER, rubber ........................................................................................................... 1

5 D5-031-34 •INSERT, pendant hook ............................................................................................... 1

6 D5-030-23 •MICRO-SWITCH ........................................................................................................A/R

7 D5-031-21 •GASKET, micro-switch plate ....................................................................................... 1

8 D5-032-01 •PLATE, micro-switch mounting .................................................................................. 1

9 D5-031-07 •SPRING, pendant button ...........................................................................................A/R

10 •BUTTON, pendant (specify function & S.N.) ..............................................................A/R

11 D5-031-12-1 •HOLDER, plastic button .............................................................................................. 1

12 D5-060-22 •FACE PLATE, pendant control, for D5-060-21 .......................................................... 1

D5-060-17 •FACE PLATE, pendant control, for D5-060-15 .......................................................... 1

D5-060-11 •FACE PLATE, pendant control, for D5-060-08 .......................................................... 1

D5-060-04 •FACE PLATE, pendant control, for D5-060-02 .......................................................... 1

13 D6-010-80-1 •SCREW, phillips hd., M3x6 ........................................................................................ 4

14 D6-010-109 •SCREW, phillips hd., M3x15 ...................................................................................... 6

15 D5-030-42 •WASHER, special ....................................................................................................... 6

16 D5-030-43 •INDICATOR LIGHT, green .......................................................................................... 1

17 D5-030-48 •CHROME RING, indicator light .................................................................................. 1

18 D6-032-15 •SCREW, M3x10 .......................................................................................................... 2

19 D6-060-26 •SCREW, M3x15 .......................................................................................................... 6

20 D5-031-13-1 •STRAIN RELIEF, pendant end ................................................................................... 1

21 D5-031-13 •CORD, pendant control .............................................................................................. 1

22 D5-031-13-2 •STRAIN RELIEF, connector end ................................................................................ 1

23 D6-010-24 •TIE, cable .................................................................................................................... 1

24 D5-030-18 •COVER, cannon connector ........................................................................................ 1

25 D5-030-21 •CONNECTOR, cannon (male 19 pin) ........................................................................ 1

26 D6-010-57-1 SCREW, phillips hd., M4x10 (plated) .......................................................................... 4

27 D5-030-20 CONNECTOR, cannon (female 19 pin) ...................................................................... 1

28 D5-030-46 GASKET, connector ..................................................................................................... 2

29 D6-032-10 SCREW ........................................................................................................................ 4

30 D5-032-20 COVER, auxiliary base connector ............................................................................... 1

31 D4-030-05 PUMP/MOTOR ASSEMBLY ........................................................................................ 1

32 D6-011-19 BOLT, allen, M5x75 ..................................................................................................... 3

33 D1-030-14 PAD, insulating, motor ................................................................................................. 1

34 D5-030-04 CONNECTOR, 3-pin, male .......................................................................................... 1

35 D5-030-05 CONNECTOR, 3-pin, female ....................................................................................... 1

36 D5-030-03 CONNECTOR, 2-pin, female ......................................................................................A/R

37 D5-030-02 CONNECTOR, 2-pin, male ......................................................................................... A/R

38 D6-010-19 SCREW, phillips hd., M5x10 ........................................................................................ 1

Page 19

Page 20

5. ELECTRICAL COMPONENTS (CONTINUED)

Item Part No. Description Qty.

39 D1-031-19 BRACKET, capacitor .................................................................................................... 1

40 D6-010-70 BOLT, allen, M5x10 ..................................................................................................... 2

41 D5-030-29 CAPACITOR, motor starting ........................................................................................ 1

42 D5-032-14 CONNECTOR, 5-pin, female ....................................................................................... 1

43 D5-032-28 CONNECTOR, 16-pin, female ..................................................................................... 2

44 D5-032-27 CONNECTOR, 15-pin, female ..................................................................................... 1

D5-060-23 WIRE HARNESS, micro-switches ............................................................................... 1

45 D5-032-30 RELAY BOX, S.N.3100-1992-8-441&L ....................................................................... 1

D5-060-19 RELAY BOX, S.N.3100-1989-11-274 to 3100-1992-8-440 ........................................ 1

D5-060-14 RELAY BOX, S.N.3100-1989-11-273&P ..................................................................... 1

46 D5-032-10 CONNECTOR, 20-pin, female ..................................................................................... 1

D5-031-45 CONNECTOR, 16-pin, male ........................................................................................ 1

D5-031-46 CONNECTOR, 16-pin, female ..................................................................................... 1

D5-030-30 CONNECTOR, 36-pin, male ........................................................................................ 1

D5-030-31 CONNECTOR, 36-pin, female ..................................................................................... 1

D5-030-33 CONNECTOR, 6-pin, male .......................................................................................... 1

Page 21

Page 22

6. HYDRAULIC VALVES & FITTINGS

D5-030-32 CONNECTOR, 6-pin, female ....................................................................................... 1

Page 23

6. HYDRAULIC VALVES & FITTINGS

Item Part No. Description Qty.

1 D4-032-23 TERMINAL, plumbing, S.N.3100-1992-8-441&L ........................................................ 1

D4-031-99 TERMINAL, plumbing (Emergency Brake Release) ................................................... 1

D4-031-17-1 TERMINAL, plumbing .................................................................................................. 1

2 OIL LINE, specify function ...........................................................................................A/R

3 D4-010-24 BOLT, plumbing, M6 ...................................................................................................A/R

4 D4-010-08 O-RING, P-7 ................................................................................................................ A/R

5 D6-032-13 BOLT, allen, M6x140, S.N.3100-1992-8-441&L ......................................................... 2

D6-010-94 BOLT, allen, M6x35, S.N.3100-1992-8-440&P ........................................................... 2

6 D6-010-85 WASHER, flat, M6 ........................................................................................................ 2

7 D6-031-16 BUSHING, isolation ..................................................................................................... 4

8 D4-032-81 STAND-OFF, S.N.3100-1992-8-441&L ....................................................................... 2

9 D4-010-32 PACKING, copper .......................................................................................................A/R

10 D4-010-31 FITTING, flexible hose ................................................................................................A/R

11 HOSE, flexible (specify function) ................................................................................A/R

12 D6-010-47 BOLT, allen, M5x45 ..................................................................................................... 4

13 D4-031-23 PRESSURE RELIEF VALVE ASSY. ............................................................................ 1

14 D4-031-67 •O-RING, P-10 .............................................................................................................. 1

15 D4-010-51 •O-RING, P-16 .............................................................................................................. 1

16 D4-031-12 •SPRING ...................................................................................................................... 1

17 D4-031-23-1 •VALVE, relief, 5mm dia (steel) .................................................................................... 1

18 D4-031-23-2 •HOUSING, relief valve (5mm dia valve) ..................................................................... 1

19 D4-010-18 CAP, blind, M6 ............................................................................................................. 1

20 D4-032-58 OIL LINE, pump outlet, S.N.3100-1992-8-441&L ........................................................ 1

D4-031-22 OIL LINE, pump outlet, S.N.3100-1992-8-440&P ....................................................... 1

21 D4-032-52 OIL LINE ....................................................................................................................... 1

22 D4-032-51 FLEXIBLE TUBE .......................................................................................................... 1

23 D4-032-50 OIL LINE ....................................................................................................................... 1

24 D4-032-47 OIL LINE ....................................................................................................................... 1

25 D4-032-48 FLEXIBLE HOSE .......................................................................................................... 1

26 D4-032-49 OIL LINE ....................................................................................................................... 1

28 D4-032-24 BLOCK, emergency brake release S.N. 3100-600&P, 3100A-040&P ....................... 1

D4-032-24-1 BLOCK, emergency brake release S.N. 3100-601&L, 3100A-041&L ........................ 1

29 D4-010-52 O-RING, P-4 ................................................................................................................. 1

30 D4-032-25 HANDLE, emergency brake release ........................................................................... 1

31 D6-010-30 BOLT, allen, M6x20 .................................................................................................... A/R

32 D4-032-46 SPACER ...................................................................................................................... 1

33 D4-010-37 GASKET, oil filler .......................................................................................................... 1

34 D4-010-38 FITTING, oil filler .......................................................................................................... 1

35 D4-010-39 CAP, oil filler ................................................................................................................ 1

36 D6-010-67 BOLT, allen, M5x15 ..................................................................................................... 4

37 D4-030-12 FITTING, hydraulic motor/oil tank 90° .......................................................................... 2

38 D4-030-03 OIL LINE, supply .......................................................................................................... 1

39 D4-031-14 COVER, oil tank ........................................................................................................... 1

40 D4-031-13 GASKET, oil tank cover ................................................................................................ 1

41 D4-030-19 TUBE, induction ........................................................................................................... 1

42 D4-031-11 STRAINER, oil ............................................................................................................. 1

43 D6-010-30 BOLT, allen, M6x20 ..................................................................................................... 3

Page 24

6. HYDRAULIC VALVES & FITTINGS (CONTINUED)

Item Part No. Description Qty.

44 D6-031-15 WASHER, flat, M6 ........................................................................................................ 3

45 D1-031-12 BUSHING, isolation ..................................................................................................... 6

46 D4-032-56 PLATE, oil tank receiving, S.N.3100-1992-8-441&L ................................................... 1

D1-031-13 PLATE, oil tank receiving, S.N.3100-1992-8-440&P .................................................. 1

47 D4-032-55 RESERVOIR, oil tank, S.N.3100-1992-8-441&L ......................................................... 1

D4-031-10 RESERVOIR, oil tank, S.N.3100-1992-8-440&P ........................................................ 1

48 D6-010-51 BOLT, allen, M6x10 ..................................................................................................... 2

49 D6-010-40 WASHER, lock, M6 ...................................................................................................... 2

50 D4-010-52 O-RING, P-4 ................................................................................................................ A/R

51 D4-031-21 ELECTRO/MINI-VALVE ASSEMBLY (3-way), 120VAC (elevation) ..............................

D4-032-92 ELECTRO/MINI-VALVE ASSEMBLY (3-way), 120VAC (brake) ................................ A/R

52 D4-030-02 ELECTRO/MINI-VALVE ASSEMBLY (4-way), 120VAC ............................................. A/R

53 D6-010-65 •BOLT, allen, M5x35 .................................................................................................... 2

54 D4-010-41 •PLUG, cap ................................................................................................................... 2

55 D4-010-42 •SPRING, return ........................................................................................................... 2

56 D4-010-25 •VALVE, non-return ...................................................................................................... 2

57 D4-010-43 •VALVE BLOCK, 4-way ................................................................................................ 6

D4-020-23 •VALVE BLOCK, 3-way ................................................................................................ 2

58 D4-010-20 •O-RING, P-3 ................................................................................................................ 2

59 D4-010-44 •VALVE, needle, speed control ................................................................................... 2

60 D4-010-19 •O-RING, P-6 ................................................................................................................ 2

61 D4-010-01 •O-RING, P-8 ................................................................................................................ 2

62 D4-010-51 •O-RING, P-16 .............................................................................................................. 2

63 D4-010-14 •O-RING, P-12 .............................................................................................................. 2

64 D5-030-34 •SOLENOID, 120VAC .................................................................................................. 2

65 D6-010-79 •SCREW, phillips hd., M3x5 ........................................................................................ 8

66 D6-010-78 •WASHER, lock, M3 ..................................................................................................... 8

67 D4-010-40 CAP, end ...................................................................................................................... 1

68 D4-031-19 STUD ............................................................................................................................2

69 D6-010-77 WASHER, lock, M5 ...................................................................................................... 4

70 D6-010-76 NUT, M5 ....................................................................................................................... 4

71 D4-035-37 CYLINDER ASSEMBLY, brake, S.N.3100-602&L, 3100A-011&L .............................. 1

D4-031-60 CYLINDER ASSEMBLY, brake, single action, S.N.3100-274 to -601, 3100A-010&P 1

D6-031-50 BRAKE CYLINDER REBUILD KIT .............................................................................. A/R

72 D4-031-47 •O-RING, G-35 ............................................................................................................. 1

73 D4-010-02 •O-RING, P-14 .............................................................................................................. 1

74 D4-031-66 •SCRAPER, piston ....................................................................................................... 1

75 D6-031-25 •BOLT, allen, M5x65 .................................................................................................... 2

76 D4-031-48-1 COVER, ram ................................................................................................................ 4

77 D6-031-26 BOLT, allen, M6x95 .................................................................................................... 16

78 D4-031-95-1 SEAT, brake rubber ..................................................................................................... 4

79 D4-031-96 PAD, brake, self-leveling, hard .................................................................................... 2

D4-031-97 PAD, brake, self-leveling, soft ...................................................................................... 2

80 D6-010-36 WASHER ...................................................................................................................... 4

81 D6-010-30 BOLT, allen, M6x20 ..................................................................................................... 4

82 D6-032-41 SCREW, set ................................................................................................................. 1

83 D6-010-41 NUT, M6 ....................................................................................................................... 2

Page 25

Page 26

7. BRAKE SYSTEMS, S.N.3100-1989-11-273&P

Item Part No. Description Qty.

1 D4-031-24 CYLINDER ASSEMBLY, rear brake, S.N.3100-1986-023 to -046 ............................. 1

D6-031-48 BRAKE CYLINDER REBUILD KIT .............................................................................. A/R

2 D6-010-69 BOLT, allen, M8x85 ..................................................................................................... 4

3 D1-010-26 PLATE, brake seat ....................................................................................................... 1

4 D1-010-12 PAD, brake rubber ....................................................................................................... 4

5 D6-010-36 WASHER, brake rubber ............................................................................................... 4

6 D6-010-30 BOLT, allen, M6x20 ..................................................................................................... 4

7 D4-031-25 CYLINDER ASSEMBLY, front brake, S.N.3100-1986-023 to -046 ............................. 2

D6-031-48 BRAKE CYLINDER REBUILD KIT .............................................................................. A/R

8 D4-010-09 •O-RING, G-50 ............................................................................................................. 4

9 D6-010-53 •BOLT, allen, M8x20 .................................................................................................... 2

10 D4-010-54 •O-RING, P-34 .............................................................................................................. 2

11 D4-010-56 •O-RING, P-10A ........................................................................................................... 2

12 D4-031-27 •RAM, front brake cylinder ........................................................................................... 2

13 D4-031-28 •STOP, piston ............................................................................................................... 2

14 D4-031-29 •SEAL RING, PS-25 ..................................................................................................... 2

15 D4-031-30 •SCRAPER, SER-25 .................................................................................................... 2

16 D6-010-66 •BOLT, allen, M6x65 .................................................................................................... 4

17 D4-010-95 SEAT, brake rubber ..................................................................................................... 2

18 D6-031-18 BOLT, allen, M8x90 ..................................................................................................... 8

19 D4-010-29 FITTING, hydraulic, 90° elbow ..................................................................................... 4

20 D4-060-56 HOSE, flexible (right front brake, ram) ......................................................................... 1

D4-060-57 HOSE, flexible (left front brake, ram) ........................................................................... 1

21 D4-060-58 HOSE, flexible (right front brake, piston) ..................................................................... 1

D4-060-59 HOSE, flexible (left front brake, piston) ........................................................................ 1

22 D4-010-30 FITTING, hydraulic, 45° elbow ..................................................................................... 2

23 D4-060-60 HOSE, flexible (rear brake cylinder) ............................................................................ 2

Page 27

D4-060-61 HOSE, flexible (left rear brake) - 4 brake system ........................................................ 2

D4-060-62 HOSE, flexible (right rear brake) - 4 brake system ...................................................... 2

D6-031-49 BRAKE CYLINDER REBUILD KIT .............................................................................. A/R

24 D4-031-34-1 CYLINDER ASSEMBLY, brake, dual action - 4 brake system,

S.N.3100-1986-1-074 to S.N.3100-1989-11-273 ....................................................... 4

25 D4-031-47 •O-RING, G-35 ............................................................................................................. 2

26 D6-010-17 •BOLT, allen, M8x15 .................................................................................................... 1

27 D4-010-56 •O-RING, P-10A ........................................................................................................... 1

28 D4-010-12 •O-RING, P-24 .............................................................................................................. 1

28A D4-031-34-2 •RAM, brake cylinder, for D4-031-34-1 ....................................................................... 1

29 D4-031-45 •SEAL RING, PS-20 ..................................................................................................... 1

30 D4-031-46 •SCRAPER, SER-20 .................................................................................................... 1

31 D4-031-48 •COVER, ram ............................................................................................................... 1

32 D6-031-20 •BOLT, allen, M6x85 .................................................................................................... 4

33 D6-031-22 •BOLT, allen, M5x55 .................................................................................................... 2

34 D4-031-32 ADJUSTABLE FOOT, brake cylinder ........................................................................... 2

D4-031-95-1 SEAT, brake rubber .................................................................................................... A/R

35 D4-031-56 PAD, brake cylinder adjustable foot ............................................................................ 2

D4-031-96 PAD, brake, self-leveling, hard .................................................................................... 2

D4-031-97 PAD, brake, self-leveling, soft ...................................................................................... 2

Page 28

8. BASE & POWER SWITCH

Item Part No. Description Qty.

1 D1-031-36 COVER, service access, S.N.3100N-1995-9-602&L, 3100A-1995-9-011&L ...............

D1-032-07 COVER, service access, S.N.3100-1992-8-441 to 601, 3100A-010&P ..................... 1

D1-070-03 COVER, service access, S.N.3100- to S.N.3100-1992-8-440 .................................... 1

D1-060-14 COVER, service access, S.N.3100- &P ....................................................................... 1

2 D6-050-37 SCREW, phillips hd., M4x8 .......................................................................................... 4

D6-010-98-1 BOLT, allen, M8x60, plated ......................................................................................... 4

3 D1-031-37 FRAME, S.N.3100N-1995-9-602&L, 3100A-1995-9-011&L ....................................... 1

D1-032-09 FRAME, S.N.3100-1992-8-441 to 601, 3100A-010&P ............................................... 1

D1-032-03 FRAME ......................................................................................................................... 1

4 D1-032-10 GASKET, S.N.3100-1992-8-441&L ............................................................................. 1

D1-032-04 GASKET ....................................................................................................................... 1

5 D1-060-17 HOUSING, base, S.N.3100-1992-8-441&L ................................................................. 1

6 D6-010-67 BOLT, allen, M5x15 .................................................................................................... 10

7 D6-010-51 BOLT, allen, M6x10 ..................................................................................................... 2

8 D1-032-12 PLATE, fuse cover ....................................................................................................... 1

9 D6-032-08 SCREW, M4x6, black ................................................................................................... 4

10 D1-070-02 BALANCE WEIGHT ..................................................................................................... 1

11 D1-032-27 BALANCE WEIGHT ..................................................................................................... 1

12 D6-070-18 BOLT, allen, M8x115 ................................................................................................... 1

13 D6-070-17 RETAINER, balance weight ........................................................................................ 2

14 D6-010-97 BOLT, allen, M8x50 ..................................................................................................... 1

15 D1-010-30 CASTER, 105HB-P ...................................................................................................... 4

16 D6-010-96 BOLT, allen, M10X20 .................................................................................................. 16

17 D6-010-16 SCREW, phillips hd., M5x6 .......................................................................................... 1

18 D6-032-06 BOLT, allen, M4x20 ..................................................................................................... 2

19 D5-032-37 RETAINER, power cord ............................................................................................... 1

20 D6-010-30 BOLT, allen, M6x20 ..................................................................................................... 2

21 D6-010-41 NUT, M6 ....................................................................................................................... 2

22 D5-032-55 SWITCH, main power .................................................................................................. 1

23 D6-010-51 BOLT, allen, M6x10 ..................................................................................................... 3

24 D6-010-40 WASHER, lock, M6 ...................................................................................................... 3

25 D5-032-52-3 BRACKET, On/Off switch ............................................................................................. 1

26 D6-032-09 BOLT, allen, M5x50 ..................................................................................................... 1

27 D6-032-12 SPRING (#89) .............................................................................................................. 1

28 D5-032-53-1 SWITCH PEDAL, On/Off switch ................................................................................... 1

29 D5-032-54 COVER, switch pedal .................................................................................................. 1

30 D6-010-59 NUT, M4 ....................................................................................................................... 1

31 D6-032-06 BOLT, allen, M4x20 ..................................................................................................... 1

32 D6-010-76 NUT, M5 ....................................................................................................................... 1

33 D1-030-15 FUSE HOLDER ............................................................................................................ 2

D5-032-74 FUSE HOLDER, 250V, 15A (9/97&L) .......................................................................... 1

34 D5-032-41 FUSE, 10A ................................................................................................................... 2

35 D5-032-34 POWER CORD ASSEMBLY ........................................................................................ 1

36 D5-032-35 STRAIN RELIEF ........................................................................................................... 1

37 D6-031-05 SCREW, phillips hd., M4x10 (plated) .......................................................................... 4

38 D1-031-24 PLATE, fuse cover ....................................................................................................... 1

39 D1-030-15 FUSE HOLDER ............................................................................................................ 1

Page 29

Page 30

8. BASE & POWER SWITCH (CONTINUED)

Item Part No. Description Qty.

40 D5-030-10 FUSE, 8 amp ................................................................................................................ 1

41 D6-010-67 BOLT, allen, M5x15 ..................................................................................................... 2

42 D5-031-27 GROMMET, strain relief ............................................................................................... 1

43 D5-030-01 POWER CORD ............................................................................................................ 1

44 D1-031-29 PLATE, fuse holder mount ........................................................................................... 1

45 D1-031-30 COVER, rubber, electrical enclosure .......................................................................... 1

46 D6-050-37 SCREW, phillips hd., M4x8 .......................................................................................... 6

47 D1-031-33 COVER, electrical enclosure, bottom .......................................................................... 1

48 D6-010-70 BOLT, allen, M5x10 ..................................................................................................... 2

49 D5-030-19 SWITCH, main power .................................................................................................. 1

50 D1-031-32 PLATE, switch mounting .............................................................................................. 1

51 D5-031-28 HEAD, power switch .................................................................................................... 1

52 D1-031-31 ENCLOSURE, electrical .............................................................................................. 1

53 D6-010-77 WASHER, lock, M5 ...................................................................................................... 4

54 D6-010-37 BOLT, allen, M5x20 ..................................................................................................... 4

Page 31

Page 32

Item Part No. Description Qty.

D6-050-02 GAUGE, oil pressure ...................................................................................................A/R

D6-010-09 GREASE, slider ........................................................................................................ 2.8 oz.

D6-010-90 OIL, hydraulic .............................................................................................................. Qt.

D6-031-50 BRAKE CYLINDER REBUILD KIT .............................................................................. A/R

D6-031-48 BRAKE CYLINDER REBUILD KIT .............................................................................. A/R

D6-031-49 BRAKE CYLINDER REBUILD KIT .............................................................................. A/R

9. SPECIAL TOOLS & MAINTENANCE ITEMS

5000 36th Street S.E., Grand Rapids, MI 49512

1-800-SKYTRON or 1-616-957-0500 • FAX 1-616-957-5053

ELITE SERIES SURGICAL TABLES

MAINTENANCE MANUAL

MODEL 3100

TABLE OF CONTENTS

SECTION I HYDRAULIC SYSTEM.......................................................................................................................... 1

1-1. General ............................................................................................................................................................ 1

Electro-Hydraulic System ........................................................................................................................................ 1

1-2. Component Operation ...................................................................................................................................... 3

a. Motor/Pump Operation ................................................................................................................................ 3

b. Pressure Relief Valve.................................................................................................................................. 3

c. Mini-Valves ................................................................................................................................................. 4

d. Mini-Valve in Neutral Position ..................................................................................................................... 4

e. Mini-Valve Right Port Activated................................................................................................................... 5

f. Mini-Valve Left Port Activated..................................................................................................................... 5

g. Hydraulic Cylinders (Slave Cylinders).......................................................................................................... 6

h. Elevation Cylinder Return Circuit................................................................................................................. 8

i. Brake System ............................................................................................................................................. 8

j. Emergency Brake Release .......................................................................................................................... 9

1-3. Hydraulic Adjustments ..................................................................................................................................... 9

a. Fluid Level .................................................................................................................................................. 9

b. Bleeding The Hydraulic System .................................................................................................................. 9

c. Pressure Relief Valve................................................................................................................................ 10

d. Speed Adjustments................................................................................................................................... 10

SECTION II MECHANICAL TABLE ADJUSTMENTS ............................................................................................ 12

2-1. Kidney Lift Cylinder Adjustment ..................................................................................................................... 12

a. Side Frame Cover Removal ...................................................................................................................... 12

b. Adjustment................................................................................................................................................ 12

2-2. Slide Function Bearing Adjustment ................................................................................................................ 12

2-3. Cassette Tray Chain Adjustment ................................................................................................................... 12

2-4. Elevation Column Adjustment ........................................................................................................................ 13

SECTION III HYDRAULIC TROUBLESHOOTING.................................................................................................. 14

3-1. Precautions.................................................................................................................................................... 14

3-2. Troubleshooting Notes ................................................................................................................................... 14

3-3. Elevation Diagnosis Chart ...................................................................................................... ........................ 15

3-4. Trendelenburg Diagnosis Chart ...................................................................................................................... 16

3-5. Lateral-Tilt Diagnosis Chart ............................................................................................................................ 17

3-6. Kidney Lift Diagnosis Chart............................................................................................................................ 18

3-7. Slide Function Diagnosis Chart ...................................................................................................................... 19

3-8. Double Action Brake Circuit Diagnosis Chart.................................................................................................. 20

3-9. Single Action Brake Circuit Diagnosis Chart................................................................................................... 21

3-10.Flexible Hose Identification and Placement .................................................................................................... 22

SECTION IV ELECTRICAL SYSTEM.................................................................................................................... 23

4-1. General .......................................................................................................................................................... 23

4-2. Components................................................................................................................................................... 23

4-3. Model Coverage ............................................................................................................................................. 23

REV 10/01

Although current at the time of publication, SKYTRON's policy of continuous development makes this manual subject to change without notice.

Page 53

TABLE OF CONTENTS (CONTINUED)

SECTION V ELECTRICAL SYSTEM TROUBLESHOOTING ................................................................................. 24

5-1. Troubleshooting Notes ................................................................................................................................... 24

5-2. Main Switch ................................................................................................................................................... 24

5-3. Relay Box ...................................................................................................................................................... 26

5-4. Pendant Control ............................................................................................................................................. 29

5-5. Solenoids ....................................................................................................................................................... 30

5-6. Motor/Pump Assembly .................................................................................................................................. 32

5-7. Return-to-Level Micro-Switches...................................................................................................................... 34

WIRING DIAGRAM, MODEL 3100 (early base design) .......................................................................................... 36

SECTION VI 3100N ELECTRICAL SYSTEM TROUBLESHOOTING..................................................................... 38

6-1. Troubleshooting Notes ................................................................................................................................... 38

6-2. Main Switch ................................................................................................................................................... 38

6-3. Pendant Control ............................................................................................................................................. 39

6-4. Relay Box ...................................................................................................................................................... 40

6-5. Solenoids ....................................................................................................................................................... 42

6-6. Motor/Pump Assembly .................................................................................................................................. 44

6-7. Return-to-Level Micro-Switches...................................................................................................................... 46

WIRING DIAGRAM, MODEL 3100N ...................................................................................................................... 48

Page 54

SECTION I HYDRAULIC SYSTEM

1-1. General

Electro-Hydraulic System

The hydraulic system (with the exception of the hydraulic cylinders and hoses) is contained within the base of the table. The hydraulic valves and pump are electrically controlled by the use of a hand-held push button pendant control. The power requirements for the table are 120 VAC, 5 amp, 60 Hz.

The table contains the following components. Refer to the block diagrams (figures 1-1 & 1-2) for relationship.

NOTE

Continuing development of the Model 3100 Table has resulted in several changes. However, the basic operation of the internal components remains the same. Figure 1-1 depicts the hydraulic system of the early models and figure 1-2 depicts the later models.

a. Oil Reservoir - Main oil supply. Approximately two quarts.

b. Motor/Pump Assembly - A positive displacement gear type pump provides the necessary oil pressure and volume.

Figure 1-1. Hydraulic Block Diagram (Early Models)

Page 1

c. Pressure Relief Valve - Provides an alternate

oil path when the hydraulic cylinders reach the end of their stroke.

d. Electro/Hydraulic Mini-Valve Assemblies These direct the fluid to the appropriate hydraulic cylinders.

e. Hydraulic Lines, Fittings, Connections - They provide a path for the hydraulic oil.

f. Hydraulic Cylinders - They convert the hydraulic fluid pressure and volume into mechanical motion.

Page 2

Figure 1-2. Hydraulic Block Diagram (Later Models)

1-2. Component Operation

a. Motor/Pump Operation

The motor/pump assembly is a gear type pump that provides the oil pressure and volume for the entire hydraulic system. The pump has an inlet side and an outlet side. The inlet side is connected to the reservoir which provides the oil supply. The reservoir has a very fine mesh screen strainer which prevents foreign material from entering the oil system.

The output line of the pump is connected to the main oil galley which is internal and common to all the hydraulic mini-valves and pressure relief valve. Also, common to the hydraulic mini-valves and pressure relief valve is an oil galley that internally connects to the oil reservoir to provide a return path for the hydraulic oil. See figure 1-3.

clockwise increases the amount of oil pressure re-quired to open the valve, and turning it counterclockwise decreases the amount of oil pressure. (See adjustment section for specification.)

Figure 1-3.

b. Pressure Relief Valve

This device provides an alternate oil path when the hydraulic cylinders reach the end of their stroke and the pump continues to run. If this path were not provided, the pump motor would stall because the oil cannot be compressed. The pressure relief valve is directly connected to the mini-valve bodies and shares both the common internal main pressure oil galley, and the return oil galley, that internally connect to the reservoir.

Figure 1-4. Pressure Relief Valve Not

Functioning

The main component of the valve is an adjustable spring loaded plunger that is pushed off from its seat by the oil pressure. The oil then flows back into the reservoir. Turning the adjustment nut

Figure 1-5. Pressure Relief Valve Functioning

Page 3

c. Mini-Valves

side of the piston being loaded with hydraulic pressure and the other side having no load.

The operation of the mini-valves is identical for all table functions except the elevation and Single Action Brake circuits. These two hydraulic circuits use a 3-way (single check valve) type mini-valve. All other functions use a 4-way (dual check valve) type mini-valve.

Either type mini-valve is controlled by two pushing type, electrically operated solenoids. The solenoids push the spool valve (located in the lower portion of the valve) one way or the other. This motion opens the main supply galley (which has pump pressure) allowing the oil to flow through the various parts of the mini-valve to the function. The spool valve also opens an oil return circuit which allows the oil to return to the oil reservoir.

The main components of the mini-valve and their functions are listed below:

1. Spool Valve - Opens the main oil galley (pump pressure) to either mini-valve outlet depending on which direction the spool valve is pushed. Also it provides a return path for the oil returning back into the reservoir.

Also, by using this control method, it doesn’t matter what size cylinder and piston is used because the speed can be controlled by restricting the return oil. If the pump puts out more volume to a certain slave cylinder than the speed control is allowing to go back to the reservoir, the pressure relief valve provides an alternate path for the pump oil.

d. Mini-valve in neutral position-

(No fluid flow) See figure 1-6.

1. Spool Valve Centered - This closes off

both oil pressure and oil return galleys.

2. Pilot Plungers Both Closed -The pilot plungers control the opening of the check valves. If they are closed, the check valves must be closed.

3. Check Valves - Both check valves are closed trapping the oil in the cylinder and oil lines.

4. Speed Adjustment - When the mini-valve is in the neutral position, the speed adjustment does not affect anything because there is not any oil flow.

2. Pilot Plunger - There are two plungers in a four- way mini-valve (one in a 3-way mini-valve), one under each check valve. The purpose of the pilot plungers is to mechanically open the return check valve allowing the oil to return back into the reservoir.

3. Check Valve - Two are provided in each four-way mini-valve to seal the oil in the cylinders and oil lines and prevent any movement of the table. One check valve is provided in a 3-way minivalve.

4. Speed Adjustments - There are two speed adjustments in each mini-valve. They are needle valve type controls which restrict the volume of oil returning back into the reservoir, thereby controlling the speed of the table surface movement. A 3-way mini-valve has only one speed adjustment.

The speed controls are always located in the return oil circuit. This prevents uncontrolled movement of the piston in the slave cylinder due to one

Figure 1-6. Mini-Valve in Neutral Position

Page 4

e. Mini-Valve Right Port Activated

(See figure 1-7.)

Slave Cylinder Piston Moves to Left Right Mini-Valve Port is Supply Line Left Mini-Valve Port is Return Line

f. Mini-Valve Left Port Activated

(See figure 1-8.)

Slave Cylinder Piston Moves to Right Left Mini-Valve Port is Supply Line Right Mini-Valve Port is Return Line

Figure 1-7. Mini-Valve Right Port Activated

1. Spool Valve - Pushed to the left by electric solenoid. This opens the internal oil pressure galley allowing the fluid to go through the check valve and on to the cylinder. Also, the spool valve opens the oil return line providing an oil path through the internal oil galley back to the reservoir.

2. Pilot Plunger Valve - Left pilot plunger valve is pushed up by the incoming oil pressure mechanically opening the check valve located above it in the return circuit. This action allows the oil from the left side of the slave cylinder to go back into the reservoir. The right pilot plunger valve is not affected in this operation mode.

3. Check Valves - Both check valves are opened in this operation mode. The right check valve is pushed open by the oil pressure created by the pump. The oil then continues to go through the lines and pushes the slave cylinder piston to the left. At the same time, the left check valve is held open mechanically by the pilot plunger providing a return path for the oil through the mini-valve back into the reservoir.

Figure 1-8. Mini-Valve Left Port Activated

1. Spool Valve -Pushed to the right by electric solenoid. This opens the internal oil pressure galley allowing the fluid to go through the check valve and on to the cylinder. Also, the spool valve opens the oil return line providing an oil path through the internal oil galley back to the reservoir.

2. Pilot Plunger Valve - Right pilot plunger valve is pushed up by the incoming oil pressure mechanically opening the check valve located above it in the return circuit. This action allows the oil from the right side of the slave cylinder to go back into the reservoir. The left pilot plunger valve is not affected in this operation mode.

3. Check Valves - Both check valves are opened in this operation mode. The left valve is pushed open by the oil pressure created by the pump. The oil then continues to go through the lines and pushes the slave cylinder piston to the right. At the same time, the right check valve is held open mechanically by the pilot plunger providing a return path for the oil through the minivalve back to the reservoir.

4. Speed Adjustment - The right speed control (output side) does not have any effect in this operation mode because the oil is routed around the speed adjustment through a by-pass valve and then to the output port. The left speed adjustment controls the speed of the table function by restricting the amount of oil going back into the reservoir.

4. Speed Adjustment - The left speed control (output side) does not have any effect in this operation mode because the oil is routed around the speed adjustment through a by-pass valve and then to the output port. The right speed adjustment controls the speed of the table function by restricting the amount of oil going back to the reservoir.

Page 5

g. Hydraulic Cylinders (Slave Cylinders)

There are several different types of hydraulic cylinders used in the table that activate the control functions. With the exception of the elevation and Single Action Brake Cylinders, all operate basically the same way. The control functions are listed below. See figure 1-9.

Reverse Trendelenburg/Trendelenburg Lateral Tilt Elevation Brake Cylinders Kidney Lift Slide Function

NOTE

Kidney Lift not applicable for Model

3100-A

Figure 1-10. Kidney Lift Cylinder

2. Lateral Tilt Cylinder Assembly - The lateral tilt cylinder assembly consists of a dual cylinder housing with two pistons complete with connecting rods. The connecting rods are attached to a stationary pin in the housing on top of the main support column. The cylinder housing attaches to the table top via both side frames and is attached to the support column with a pivot pin. See figure 1-11.

Figure 1-9. Cylinder Placement

1. Kidney Lift and Trendelenberg Cylinders The double action cylinder is closed at one end and has a movable piston with hydraulic fluid on both sides. Connected to this piston is a ram or shaft that exits out of the other end of the cylinder. Through the use of either a ball and socket, or clevis and pin arrangement, this ram is connected to a movable table surface.

The pistons and connecting rods are attached to a non-movable surface. Therefore, when hydraulic fluid is pumped into one side, the cylinder housing itself moves around its pivot pin causing the table top to tilt to one side. To tilt the table top in the opposite direction, hydraulic fluid is pumped into the other side of the cylinder assembly.

The movable surface can be moved one way or the other by pumping hydraulic fluid into either side of the piston. Obviously, if oil is pumped into one side of the cylinder, a return path must be provided for the oil on the other side. See figure 1

-10.

Page 6

Figure 1 -11. Lateral Tilt Cylinder Assembly

3. Slide Function Cylinder - This cylinder is also a double action cylinder. It differs from the Kidney Lift and Trendelenburg cylinders in that the piston is connected fo rams which exit from each end of the cylinder tube. The ends of the rams connect to each end of the table top. The cylinder tube Is connected to the main side frame. When hydraulic fluid is pumped into one side of the cylinder the entire table top assembly will slide longitudinally. See figure 1-12.

Figure 1-12. Slide Function Cylinder

4. Elevation Cylinder (Single Action) -This cylinder is different than the others because it does not have hydraulic fluid on both sides of the piston. It depends on the weight of the table top assembly to lower it.

5. Double Action Brake Cylinder (Early Table Models)- The brake cylinders are double action cylinders similar to the trendelenburg cylinder. The movable piston's ram is connected to a brake pad. Oil pumped into the top of the cy-linder pushes the piston down and raises the table base off its casters. Oil pumped into the bottom of the cylinder pushes the piston up, lowering the base back onto its casters. See figure 1-14.

The cylinder is set in the center of the elevation main column. The piston and piston rod are elevated by the driven force of the oil pressure. When lowering, the oil that is accumulated in the cylinder is returned to the oil reservoir through the mini-valve due to the table top weight.

A slider support assembly is used to support the weight of the upper table section. The stainless steel decorative shrouds cover the flexible hydraulic hoses and slider. See figure 1-

13.

Figure 1-14. Double Action Brake Cylinder

6. Single Action Brake Cylinder (Later Table Models)- The brake cylinders are single action type similar to the elevation cylinder. The movable piston's ram is connected to a brake pad. See figure 1-15. Oil pumped into the top of the cylinder pushes the piston down and raises the table base off its casters. An internal return spring on the bottom of the piston, pushes the piston up to return the oil through the mini-valve to the reservoir.

Figure 1-13. Elevation Assembly

Figure 1-15. Single Action Brake Cylinder

Page 7

h. Elevation Cylinder Return Circuit

A three-way (single check valve type) mini-valve controls both the elevation and return circuits. The elevation circuit operation within the mini-valve is identical to the operation of the four-way valves previously described (inlet pressure opens the check valve allowing the oil to enter the cylinder). In the return position, inlet pressure pushes the pilot plunger up and opens the return check valve. See figure 1-16. The open check valve allows a path for the oil in the elevation cylinder to return to the reservoir. When the pilot plunger valve is opened, the continuing pump pressure opens the pressure relief valve which provides a return oil path to the reservoir.

The mini-valve used in the elevation circuit contains only one check valve (all four-way minivalves use two check valves). The check valve is used to trap the oil in the elevation cylinder thereby supporting the table top. When the top is being lowered the check valve is mechanically held open by the pilot plunger through pump pressure.

2. 3-way (single check valve type) mini-valve.

3. Manually controlled emergency brake re-

lease.

4. Plumbing terminal, flexible hose, copper lines

and "O" rings.

5. Portions of the electrical system.

Figure 1-16. Elevation Return Circuit

i. Brake System

The later model brake system consists of the following components: (figure 1-17)

1. Single action slave cylinders (4 each).

Figure 1-17. Brake System Block Diagram

Each corner of the cast-iron table base has a hydraulic brake cylinder. These single-action cylinders are hydraulically connected in parallel to the mini-valve and all four are activated together. It is normal for one corner of the table to raise before the others due to the weight distribution of the table.

On early models the brakes are activated when the "elevation-up" button on the pendant control is pushed and held down. The brakes are completely set when the elevation function (table top) starts to move upward.

Later models use an electronic timer in the relay box so that when any function on the pendant control is pushed momentarily the pump/motor and brake system mini-valve is activated and the brake cylinders are completely set. The electronic timer runs for approx. 8-10 seconds.

Page 8

The brakes are released by pushing the "UNLOCK" button momentarily. An electronic timer in the relay box activates the brake function, hydraulic mini-valve and pump/motor.

When activated, the return hydraulic circuit operates similar to the elevation cylinder return circuit. Return springs inside the single-action brake cylinders retract the brake pads and provide the pressure to return the hydraulic oil back to the reservoir. The electronic timer operates the return circuit tor approximately 8-10 seconds.

j. Emergency Brake Release

2. None of the table functions will operate properly- if the valve is wide open. All of the hydraulic fluid from the pump is simply pumped through the brake bypass circuit because that is the easiest path for the oil to follow.

1-3. Hydraulic Adjustments

a. Fluid Level.

The fluid level should be approximately 1/2" below the filler hole or gasket surface. If additional fluid is needed, remove the filler vent cap with a phillips screwdriver and add fluid through this opening using a funnel. See figure 1-19.

The emergency brake release is simply a manually operated bypass valve connected in parallel to the brake cylinders and the oil reservoir. See figure 1-

18. When the valve is opened (turned counterclockwise) a return circuit for the brake hydraulic fluid is opened. The return springs force the piston up pushing the hydraulic oil back into the reservoir and retracting the brake pads.

Figure 1-18.

IMPORTANT

The emergency brake release valve must be tightened securely when not in use.

NOTE

The elevation cylinder should be completely down and all the other control functions in their neutral position when checking oil level.

Figure 1-19.

The type of oil that should be used is Mobil DTE #25 or equivalent. This is a very high quality hydraulic oil. The table requires approximately two quarts of oil to operate properly.

b. Bleeding The Hydraulic System

If the emergency brake release valve has been operated, the UNLOCK button on the pendant control may have to be pressed before brakes will lock again.

If the emergency brake release valve is open or loose, two conditions could occur:

1. The brakes will release slowly- depending on how loose the valve is. This could take anywhere from a few minutes to several hours.

To purge the air from the hydraulic system, operate each function back and forth at least two or three times.

NOTE

Whenever a hydraulic line or com-ponent is replaced, bleed the air out of the lines using the pump pressure before making the final connection. Then operate the function until it stalls in both directions.

Page 9

c. Pressure Relief Valve

The pressure relief valve is adjusted by turning the adjustment nut until the desired pressure is reached.

To adjust:

1. Remove the blind cap and attach a hydraulic pressure gauge to the main oil galley using a 6mm plumbing bolt. See figure 1-20.

screwdriver and turning the adjustment screw clockwise to decrease the speed and counterclockwise to increase the speed. Refer to figure 1-21.

Figure 1-20.

2. Raise the table top unit until it reaches the end of its stroke and stalls. Observe reading on pressure gauge. Turn adjustment nut (clockwise to increase oil pressure, counterclockwise to decrease) until desired reading is obtained. Pressure should be 80KG/CM† -1138 PSI.

d. Speed Adjustments

The speed adjustments control the volume of oil returning back to the reservoir thereby controlling the speed of each control function.

All four-way mini-valves, have two speed adjustments located in the ends of each valve body. All three-way mini-valves have only one speed adjustment.

One speed adjustment controls one direction of a particular function and the opposite speed adjustment controls the other direction. They are adjustable by using a small straight blade

Figure 1-21.

Any control function should move in either direction at the same rate. If the rate of a certain function is too slow, open the speed control slightly and recheck. On the electric tables use the second hand on a watch and time that particular function. Match that time in the opposite direction by opening or closing the speed control.

A pressure gauge can be used to set the speed of each control function.

NOTE

Kidney Lift not applicable for Model

3100-A

To adjust:

1. Attach the pressure gauge onto the main

oil galley pictured in figure 1-19.

2. The gauge should read the following values when operating the various control functions in either direction. Turn the speed controls until desired values are obtained.

Page 10

Lateral Tilt 75KG/CM2 - 1065 PSI Kidney Lift Up 50KG/CM2 - 710PSI

Dn 65KG/CM

- 925PSI

Trendelenburg Hd Dn 30KG/CM2 - 425PSI

Hd Up 60KG/CM

- 850PSI Slide 55KG/CM2 - 780PSI Brakes (Set) 10-30KG/CM2 -142-425PSI

Pressure Relief Valve 80KG/CM

- 1138PSI

Elevation - There is not a speed adjustment for raising the table. The speed control will only affect the rate of descent and it should equal the rate of elevation.

NOTE

These pressure values should be used as a guideline. If the speed of a control function moves faster in one direction than the other direction, adjust the speed control until they are equal. You may find that the pressure gauge may record a higher reading in one direction. This is normal.

Page 11

SECTION II MECHANICAL TABLE ADJUSTMENTS

2-1. Kidney Lift Cylinder Adjustment (Model 3100 only)

The kidney lift is operated by two hydraulic cylinders. The table top sections which make up the kidney lift can twist and become damaged if these two cylinders do not move together properly. If an adjustment is necessary, use the following procedures.

a. Side Frame Cover Removal

Remove the seven phillips head bolts and side rail collars which secure the side rails, and remove the side rail. See figure 2-1. Remove the five phillips head screws from the bottom of the side panel and remove the side panel.

CAUTION

To prevent internal O-ring seal damage, use extreme care not to damage the working surface of the cylinder rod (the portion which goes inside the cylinder when it is retracted).

When proper adjustment is complete, replace side cover and side rail.

2-2. Slide Function Bearing Adjustment

The bottom slide function roller bearings are mounted on eccentric shafts. To adjust the bearing fit in the side frame channel, loosen the setscrew that holds the shaft in place and turn the shaft with a screwdriver until all play is removed from side rail channel. See figure 2-3.

Figure 2-1. Side Cover Removal

b. Adjustment

Loosen the nut which locks the cylinder rod to the clevis. See figure 2-2. Adjust the cylinder travel by turning the cylinder rod until the operating length of both cylinders is equal. Tighten the lock nut.

Figure 2-2. Kidney Lift Cylinder Adjustment

Page 12

Figure 2-3. Bearing Adjustment

2-3. Cassette Tray Chain Adjustment

Each sprocket shaft is mounted in an eccentric bushing. See figure 2-4. To adjust the chain tension, loosen the set screw securing the bushing, turn the bushing to achieve the desired tension and retighten the set screw. To gain access to the bushing and the set screw, the side cover must be removed. See paragraph 2-1 a.

Figure 2-4. Chain Tension Adjustment

2-4. Elevation Column Adjustment

NOTE

This adjustment is required only if excessive horizontal table top movement occurs, or after replacement of the elevation column bearing components. This adjustment should only be performed by a qualified technician.

WARNING

Extreme care must be taken not to overtighten the set screws as irreversible damage to the elevation components may result.

To adjust:

tly tighten the adjustment set screws using a 4mm allen wrench until slight pressure is exerted against the bearing thrust plate.

CAUTION

DO NOT OVERTIGHTEN SET SCREWS.

5. Elevate the table until the next row of adjustment set screws becomes accessable. Tighten as described in step 4 above.

6. Repeat this process until the elevation column is fully extended and all 10 rows of set screws have been adjusted.

1. Lower elevation column.

2. Remove the screws which retain the lower

shroud to the base. See figure 2-5.

3. Using tape or bungy cord, secure the lower

shroud piece to the upper shroud piece.

4. Elevate the table top until the first row of

adjustment set screws becomes accessible. Gen-

7. Lower elevation column and repeat steps 4 through 6 until there is no horizontal movement to the table top, and the elevation column descends smoothly without binding.

NOTE

This adjustment should be checked after one week, then approximately once a year.

Figure 2-5. Elevation Column Adjustment

Page 13

SECTION III HYDRAULIC TROUBLESHOOTING

3-1. Precautions

Before attempting to troubleshoot any hydraulic problem on the table, please read through the precautions and notes below.

CAUTION

When disconnecting any of the hydraulic lines, fittings, joints, hoses, etc., for the following control functions, be sure these table surfaces are in their down position or completely supported.

Elevation Kidney Lift

When working on the trendelenburg or lateral tilt hydraulic circuits, be sure to support the table top.

CAUTION

Failure to follow these precautions may result in an uncontrolled oil spray and damage to the table or personal injury.

3-2. Troubleshooting Notes

When troubleshooting a table malfunction, first determine the following:

Listed below are the hydraulic components that are common with all hydraulic circuits. If there is a problem with any of them, it could affect all control functions.

1. Motor/Pump Assembly

2. Reservoir

3. Pressure Relief Valve

4. Certain Oil Lines and Galleys

If there was a problem in the following components, only one control function would normally be affected.

1. Mini-Valve

2. Slave Cylinder

3. Oil Lines

NOTE

Whenever a hydraulic line or component is replaced, bleed the air out of the lines using the pump pressure before making the final connection. After all connections are tight, cycle the control function back and forth two or three times to purge the remaining air from the system.

1. Does the problem affect all control functions?

2. Does the problem affect only one control

function?

3. If the problem affects one control function

is it in both directions?

4. Is the problem intermittent?

5. Is the problem no movement of a table

surface or does the table surface lose position? Once the problem has been determined,

concentrate on that particular hydraulic circuit or control function.

Page 14

IMPORTANT

When installing new "O" rings use hydraulic oil to thoroughly lubricate the "O" rings and cylinder. Keep everything clean.

Each complete oil circuit is shown on the following pages. When troubleshooting a particular function, refer to the appropriate oil circuit diagram and the list of possible problems

3-3. ELEVATION DIAGNOSIS CHART

Problem

Table will not elevate properly

Table will not descend properly

Table loses elevation

Reason

Pressure Relief Valve Not Set Properly Low on Oil Spool Valve Not Centered Defective Pump Defective Mini-Valve Defective Solenoid or Wiring Defective Relay Box or Pendant Control

Incorrect Speed Adjustment Bad Check Valve Spool Valve Not Centered Defective Solenoid or Wiring Defective Relay Box or Pendant Control

Bad Check Valve Leaking Mini-Valve Loose Fittings,Joints, Hoses Leaking "O" Ring Inside Cylinder

Figure 3-1. Elevation Circuit

Page 15

3-4. TRENDELENBURG DIAGNOSIS CHART

Problem

Trendelenburg function moves improperly

Trendelenburg function chatters or loses position

Reason

Incorrect Speed Adjustment Spool Valve Not Centered or Adjusted Properly Bad Check Valves Low on Oil Pinched Hose Defective Mini-Valve Pressure Relief Valve Not Set Properly Bad Solenoid or Wiring Defective Relay Box or Pendant Control

Defective or Dirty Check Valve Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil

Page 16

Figure 3-2. Trendelenburg Circuit

3-5. LATERAL - TILT DIAGNOSIS CHART

Problem

Lateral tilt function moves improperly

Lateral tilt function chatters or loses position

Reason

Defective or Dirty Check Valves Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil

Figure 3-3. Lateral Tilt Circuit

Page 17

3-6. KIDNEY LIFT DIAGNOSIS CHART

Problem

Kidney Lift moves improperly

Kidney Lift chatters or loses position

Reason

Incorrect Speed Adjustment Spool Valve Not Centered or Adjusted Properly Bad Check Valve Low on Oil Pinched Hose Defective Mini-Valve Pressure Relief Valve Not Set Properly Bad Solenoid Defective Relay Box or Pendant Control

Defective or Dirty Check Valve OiI Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil

Page 18

Figure 3-4. Kidney Lift Circuit (Model 3100 only)

3-7. SLIDE FUNCTION DIAGNOSIS CHART

Problem

Slide function moves improperly

Reason

Incorrect Speed Adjustment Spool Valve Not Centered or Adjusted Properly Bad Check Valve Low on Oil Pressure Relief Valve Not Set Properly Pinched Hose Defective Mini-Valve Bad Solenoid Defective Relay Box or Pendant Control

Slide function chatters Defective or Dirty Check Valve

Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil

Figure 3-5. Slide Function Circuit

Page 19

3-8. DOUBLE ACTION BRAKE CIRCUIT DIAGNOSIS CHART

Problem

Brakes will not set properly

Brakes will not stay locked

Brakes will not retract properly

Reason

Incorrect Speed Adjustment Spool Valve Not Centered or Adjusted Properly Bad Check Valves Low on Oil Pressure Relief Valve Not Set Properly Pinched Hose Defective Mini-Valve Defective Relay Box or Pendant Control

Defective or Dirty Check Valves Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil

Page 20

Figure 3-6. Double Action Brake Circuit

3-9. SINGLE ACTION BRAKE CIRCUIT DIAGNOSIS CHART

Problem

Brakes will not set properly

NOTE

If brakes have been released with the Emergency Brake Release Valve, brakes will not reset until MOVE Circuit has been activated.

Brakes Will Not Stay Locked

Brakes will not retract properly

Reason

Emergency Brake Release Valve Open or Defective Spool Valve Not Centered or Adjusted Properly Bad Check Valve Low on Oil Pressure Relief Valve Not Set Properly Pinched Hose Defective Mini-Valve Defective Relay Box or Pendant Control

Emergency Brake Release Valve Open or Defective Defective or Dirty Check Valve Oil Leakage in Circuit Leaking "O" Ring Inside Cylinder

Incorrect Speed Adjustment Bad Check Valve Spool Valve Not Centered Defective Mini-Valve Defective Solenoid or Wiring Defective Relay Box or Pendant Control

Figure 3-7. Single Action Brake System

Page 21

3-10. Flexible Hose Identification and Placement

The following figures will show the correct placement of the flexible hydraulic hoses used in the table and their respective number codes.

Figure 3-8. Main Plumbing Terminal

Page 22

Figure 3-9. Cylinder and Plumbing Terminals

4-1. General

SECTION IV ELECTRICAL SYSTEM

The complete electrical system (with the exception of the hand-held pendant control and the return circuit micro-switches) is contained within the base of the table. The pump motor and the hydraulic valves are controlled electrically with the pendant control.

The electrically operated functions are as follows:

- ELEVATION - Up and Down

- TRENDELENBURG - Head up and down

- LATERAL TILT - Right and left

- KIDNEY LIFT- Up and down

- SLIDE FUNCTION

- RETURN - Trendelenburg and lateral tilt

- UNLOCK- Brake release

The power requirements are 120 VAC, 5 amp, 60 HZ, protected by internal fuses. The main power on-off switch is an enclosed DPST type and the power cord is a three-wire, fifteen foot long, UL listed cord with a three-prong hospital grade plug.

e. Motor/Pump Assembly - 120 VAC, 60 HZ, 200 Watt capacitor induction motor.

4-3. Model Coverage

Section V covers the Electrical System Troubleshooting for the Early Model base design and Section VI covers the Electrical System Troubleshooting for the "N" Series base design.

The two models can be easily identified by the position of the main power switch. The power switch is located on the top of the base on the early models and on the front of the base for the "N" series models. See figure 4-1.

4-2. Components

Refer to figures 5-1 & 6-1. for the relationship of the electrical components.

a. Wires, Connectors, Switches, Fuse - These provide the path for the various electrical circuits.

b. Relay Box - Contains the step down transformer, full wave rectifier, and relay switches. The relay switches are activated by the pendant control and in turn energize the solenoid.

c. Hand-Held Pendant Control - Closes microswitches to activate relay box. Operates on 6.3 VDC.

d. Solenoids - These electrically open and close the hydraulic ports of the mini-valve to direct the fluid to the correct cylinders. They operate on 120 VAC.

4-1. Model Identification

Page 23

SECTION V ELECTRICAL SYSTEM TROUBLESHOOTING

5-1. Troubleshooting Notes

The basic operation of each component will be defined along with a drawing and explanation on how to check it out.

NOTE

This section covers the electrical system for the early base design tables with serial number 3100-1992-8-440 & prior. See section VI for the "N" series base design, serial number 3100N1992-8-441 & later.

Certain defective components could cause the entire table to stop functioning or only one control function to stop, depending upon what part of the component failed. Other defective components would only cause one control function to stop.

These defective components could affect all control functions.

a. Motor/Pump Assembly (starting capacitor) b. Main Switch Circuit and Wiring

1. Plug the power cord into the 120VAC supply

(wall receptacle) and turn ON main switch.

2. Disconnect connectors B and B'. See figure

5-2. Leave all other connectors connected.

Figure 5-2. Main Switch Box and Fuse

CAUTION

These defective components could affect all control functions or only one control function:

a. Relay Box b. Pendant Control

A defective Solenoid would only affect one control function.

When troubleshooting an electrical circuit, start at the problem and work back to the power source.

5-2. Main Switch

The main power supply, 120 VAC, 60 HZ, comes in through the power cord and through the main switch. The main switch opens both lines when in the "OFF" position. An 8 amp fuse is used in one line to protect the complete electrical system and it is located next to the main switch.

a. Main Switch Test

The following test will determine if line voltage is applied to connector B', which in turn would power the table.

Line voltage (120 VAC) will be measured in this test. Do not touch uninsulated connector pins or meter test leads.

3. Use an AC voltmeter capable of measuring 120 VAC and measure the voltage between pins 1 and 3 (black and white wires) located in connector B'. See figure 5-3. You should receive line voltage 120 VAC.

Figure 5-3. Back View Connector B'

CONNECTOR B' COLOR CODE

Pin 1 -White Pin 2 - Blue Pin 3 - Black Pin 4 - Red

Page 24

Figure 5-1. Electrical Circuit Block Diagram

Page 25

b. Test Results

If you do not receive the correct voltage measurement, the problem would have to be in the wires, main switch, fuse, or power cord. If the correct voltage is obtained, everything is good up to this point and the problem would have to be in another area.

5-3. Relay Box

The 120 volt power supply is directly connected to the relay contacts. When these contacts are closed, 120 volts is supplied to the solenoids which are mounted on the hydraulic mini-valves. One relay is used to supply 120V to the pump/motor and is always activated no matter what control function is selected. The brake locking circuit relay is also activated when any control function other than UNLOCK is selected.

Also, inside the relay box is a step-down transformer and full-wave rectifier which decreases the line voltage to 6.3 volts. This low voltage potential controls the relays by the use of the hand-held pendant control buttons. Basically the relays enable a 6.3 voltage potential to control the 120 volt circuit.

3. Use an ohmmeter R x 1 scale to measure the following connector pins in connector B. See figure 5-5.

Figure 5-5. Back View Connector B

CONNECTOR B COLOR CODE

Pin 1 Yellow Pin 2 Blue Pin 3 Blue Pin 4 Red

a. Relay Box Test

The following tests will determine if the relay box is functioning correctly.

b. Step# 1 -Checking Connector B

1. Plug the power cord into the 120 VAC supply (wall receptacle). Leave the main switch in the "OFF" position.

2. Disconnect B and B'. See figure 5-4. Leave all other connectors connected.

c. Test Results:

If you do not receive the correct meter readings, the relay box or wiring is defective. If the correct readings are obtained, this part of the relay box is okay. Proceed to the next step.

d. Step #2 - Checking Low Voltage (Connector E) This test checks the low voltage applied to the

pendant control buttons.

1. The power cord should be plugged into the

wall receptacle and main switch turned ON.

2. Disconnect connector E and E'. See figure

4-1. All other connectors should be connected.

3. Use a DC voltage meter 10V scale, or equivalent, and measure the following connector pins located in connector E. See figure 5-6.

Page 26

Figure 5-4.

Figure 5-6. Back View Connector E

CONNECTOR E COLOR CODE

1 Red/White 2 White 3 Black 4 Red 5 White/Red 6 Yellow 7 Brown 8 White/Brown 9 White/Blue 10 Orange 11 White/Orange 12 White/Yellow 13 Violet/White 14 Black/White 15 16

CAUTION

120 VAC will be measured in this test. Do not touch uninsulated connector pins or meter test leads.

1. The power cord should be plugged into

the wall receptacle and main switch turned ON.

2. Disconnect connectors A and A', E and E', and the motor connector C and C'. All other connectors should be connected.

3. A jumper wire must be used to electrically close the relay contacts in order to make this test. The jumper wire will be used to connect pins 1 through 16 in the 16-pin connector E. See figure 5-7. These pins are low voltage (6.3V) and there is no danger of electrical shock.

e. Test Results:

If you do not receive the correct meter readings, the relay box or wiring is defective. If the correct readings are obtained, this part of the relay box is okay. Proceed to the next step.

f. Step #3 - Checking High Voltage (Connector A) This test checks the high voltage (120V) that is used to energize the solenoids.

Figure 5-7. Back View Connector E

4. Use an AC voltmeter capable of measuring 120 VAC and measure the voltage between the indicated connector pins located in Connector A. See figure 5-8.

Figure 5-8. Back View Connector A

Page 27

CONNECTOR A COLOR CODE

1 Red 15 White/Orange 2 Blue 16 Blue 3 White/Red 17 White/Yellow 4 Blue 18 Blue 5 Yellow 19 Violet/White 6 Blue 20 Blue 7 Brown 21 White/Black 8 Blue 22 Blue 9 White/Brown 23 Black/White 10 Blue 24 Blue 11 White/Blue 25 Red/White 12 Blue 26 Blue/White 13 Orange 27 Green/White 14 Blue 28 Brown/White

IMPORTANT

Connector A is High Voltage 120 VAC. Connector E is Low Voltage 6.3 VDC.

g. Test Results:

If you do not receive the correct meter readings, the relay box or wiring is defective and should be replaced.

NOTE

Before deciding the relay box is defective, check the wires and pins in the connector blocks to make sure they are not loose or making a bad connection with their mate.

Page 28

5-4. Pendant Control

The Pendant Control consists of 13 micro-switches (buttons).When any of the circuits are completed (by depressing a control button) the appropriate relay contacts (located in the relay box) close and

120V potential is applied to the solenoid to operate the hydraulic mini-valve. The Pendant Control has only 6.3 volts applied to it.

Figure 5-9. Pendant Control Test

Page 29

a. Pendant Control Test

The following test will determine if the micro switches inside the Pendant Control are functioning correctly.

1. Unplug the 19 pin connector from the base of the table. You will be checking the cord side connector.

2. Use an ohmmeter R x 1 and check the continuity between pins 1 through 16. See figure 5-9.

3. Ohmmeter must show continuity between the pins that are indicated when the appropriate buttons are pressed.

NOTE

Pins 2 and 3 are connected to the LED (power on light on the pendant control) and cannot be checked with an ohmmeter.

Pin 16 in table socket connector will have no voltage potential unless 1 of the 4 return-to-level micro-switches are activated, i.e. trendelenburg or tilt.

b. Test Results:

If you do not receive continuity between any of the pins, either the micro-switch in the Pendant Control is defective or a wire is broken. Either of these problems can be repaired easily.

If you receive correct readings with the meter, there is nothing wrong with the Pendant Control.

c. Wiring Harness Test

The following test checks the wires leading from the relay box connector to the 19 pin connector table socket. These wires apply low voltage to the pendant control buttons. This test is similar to the test performed on the connectors explained in the relay box test.

1. The power cord should be plugged into the wall socket and the main switch turned ON.

2. Disconnect the 19 pin pendant control connector. All other connectors should be connected.

Figure 5-10. Front View Table Connector

d. Test Results:

If you do not receive the correct voltage reading, the wiring or connector pins are faulty. If the correct readings are obtained, this part of the circuit is okay.

5-5. Solenoids

3. Use a DC voltmeter 10V scale and measure the following pins located in the 19 pin table socket connector. See figure 5-10.

Page 30

The solenoids are energized by 120 volt potential that is controlled by the relays located inside the relay box.

The solenoid windings are protected from excessive heat with an internal thermal fuse that will open after approximately seven (7) minutes of continuous operation. The solenoid must be replaced if the internal thermal fuse has been blown. The solenoids are mounted directly on either side of the hydraulic mini-valves and push the spool valve in one direction or the other depending upon which solenoid is activated.

a. Solenoid Test

The following tests will check the voltage applied to the solenoids and the resistance of the solenoid coil.

NOTE

Each solenoid is controlled with 120V source coming from the relay box. This source can easily be checked by measuring the voltage at the 2 pin connector in question.

CAUTION

Line voltage will be measured in this test. Do not touch uninsulated connector pins or meter test leads.

b. Step #1

NOTE

If a solenoid does not function when the pendant control button is pushed, the problem could be the pendant control, the relay box, or the solenoid.

1. Plug the table cord into the wall receptacle

and turn main switch ON.

2. Disconnect the 2 pin connector from the solenoid in question, connector D' shown for example in Figure 5-11.

Figure 5-11. Solenoid Test

Page 31

3. Use a voltmeter capable of measuring 120 VAC and measure the voltage across the 2 pin connector. Polarity of meter leads is not important.

NOTE

The appropriate pendant control button must be pushed during this test. The motor will run when this test is performed, and the brake locking solenoid will be activated by any function other than UNLOCK.

NOTE

Whenever there are several components of the same type, a defective unit can also be detected by substituting a known good unit or wire connector. In some cases this may be faster than using a multi-meter.

5-6. Motor/Pump Assembly

c. Test Results:

If you do not receive the correct voltage, the problem could be in the wires leading down to connector A'. The problem could also be in the relay box or the Pendant Control (refer to that section for troubleshooting).

If the correct voltage is obtained, everything is good up to that point and the problem is more than likely the solenoid.

d. Step #2

The solenoid can be checked out using an ohmmeter R x 1 scale.

1. Measure the resistance between the two pin connector in question, connector D shown for example in Figure 5-11. Connector must be disconnected. Polarity of meter leads is not important.

The electric motor is a capacitor start type with a rating of 120 VAC, 200 watts. The field windings are protected with a thermal protector that will open the winding circuit if the motor is run continuously for approximately 10 minutes. This protector will take about 10 minutes to automatically reset. The oil pump unit is attached to the bottom of the motor and is a gear type displacement pump with a pumping capacity of .4 liter per min. The Motor/ Pump Assembly is mounted on an insulated motor plate in the base of the table. The starting capacitor is mounted along side the motor/ pump assembly

a. Motor/Pump Test

The following tests will check the voltage applied to the motor and the resistance of the motor field windings.

CAUTION

2. The meter should read approximately 8090 ohms at room temperature (58 ohms for tables S.N. 1997-4 & L).

3. Measure the resistance between either pin and ground.

4. Meter should read infinity.

e. Test Results:

If the solenoid does not check out with the meter, it is more than likely defective and must be replaced.

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Line voltage will be measured in this test. Do not touch uninsulated connector pins or meter test leads.

b. Step #1

1. Plug the power cord into 120 VAC supply

(wall receptacle). Turn main switch ON.

2. Disconnect the 3 pin connector C' and C at the motor. Leave all other connectors connected. See figure 5-12.

If the correct voltage is obtained, everything is good up to that point and the problem could be either the motor or the starting capacitor.

d. Step #2

If the starting capacitor is shorted or grounded, the motor will not run. Capacitors very seldom fail, and it requires a dielectric tester to accurately test one. However, an ohmmeter can be used to determine if the capacitor will store a low voltage charge and most of the time this is adequate.

1. Turn the main switch OFF.

Figure 5-12.

3. Use a voltmeter capable of measuring 120 VAC and measure the following connector pins in connector C'. See figure 5-13.

Figure 5-13. Back View Connector C'

CONNECTOR C' COLOR CODE

1 - Red 2 - Blue 3 - Yellow

2. Connectors C' and C shouid be discon-

nected.

3. Use the R x 100 scale of the ohmmeter and touch pins 2 and 3 of connector C'. See figure 5-13.

e. Test Results:

The meter needle should move up scale and then back down to infinity. This would indicate that the capacitor is storing an electrical charge.

NOTE

The capacitor may have to be discharged first (by shorting pins 2 and 3 together) before you will be able to see the ohmmeter needle swing up the scale.

f. Step #3

c. Test Results:

If you do not receive the correct meter readings, the problem could be in the wires, connectors, relay box, or main switch (refer to that section for troubleshooting).

The motor windings can be statically checked for resistance using an ohmmeter.

1. Turn main power switch OFF.

2. Connectors C' and C should be disconnected.

3. Use the R x 1 scale of the ohmmeter and measure the resistance between the pins located in 3 pin connector C shown on the chart. See figure 5-14.

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Figure 5-14. Back View Connector C

CONNECTOR C COLOR CODE

1 - Red 2 - White 3 - Yellow

g. Test Results:

If you do not receive the correct meter readings, the motor or wiring is defective.

5-7. Return-to-Level Micro-Switches.

The return-to-level feature is activated by a single button on the pendant control and automatically relevels the table top from the lateral tilt and trendelenburg positions.

The micro-switches are cam operated. They operate on 6.3 VDC, and control the function circuits (pump/motor and appropriate solenoid valves) exactly like the pendant control.

The micro-switches are wired to the relay box through the 36 pin connector A and to the pendant control 19 pin connector. See figure 5-15.

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Figure 5-15. Return-to-Level Micro-Switches

a. Switch Test.

1. Disconnect 36 pin connectors A and A', and

19 pin pendant control connector.

2. Use an ohmmeter to test the resistance between indicated pins located in the pendant control connector and connector A . Refer to figure 5-16. Polarity of test leads is not important.

Figure 5-17. Micro-Switch Covers

Figure 5-16. Return-to-Level Micro-Switch

Test

b. Switch Adjustment.

If proper readings are not obtained during test or if table does not properly return to level, use the following procedure to adjust the switches.

1. Apply table brakes and (using a level) level the table top using the TRENDELENBURG and LATERAL-TILT function buttons on the pendant control.

2. Remove micro-switch covers (refer to figure 5-17), carefully loosen the switch retaining screws, and adjust the switches as needed. See figure 5-

18.

Figure 5-18. Micro-Switch Adjustment

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Wiring Diagram Model 3100 (early base design)

3100N

Figure 6-1. 3100N Electrical Circuit Block Diagram

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3100N

SECTION VI ELECTRICAL SYSTEM TROUBLESHOOTING

6-1. Troubleshooting Notes

The basic operation of each component will be defined along with a drawing and explanation on how to check it out.

NOTE

This section covers the electrical system for the "N" series base design tables with serial number 3100N-1992-8-441 & later. Refer to Section V for early model tables.

These defective components could affect all control functions.

a. Motor/Pump Assembly (starting capacitor) b. Main Switch Circuit and Wiring

These defective components could affect all control functions or only one control function:

a. Relay Box b. Pendant Control

The component listed below would only affect one control function:

Solenoid

1. Plug the power cord into the 120VAC power supply (wall receptacle) and turn ON the main switch.

2. Disconnect connector CN4 from the relay box. See figure 6-2. Leave all other connectors connected.

Figure 6-2. Main Power Test

CAUTION

Line voltage (120VAC) will be measured in this test. DO NOT touch uninsulated connector pins or meter test leads.

3. Use an AC voltmeter capable of measuring 120VAC and measure the voltage between pins 1 and 2 (black and white wires) located in connector CN4. See figure 6-3. You should receive line voltage 120VAC.

When troubleshooting an electrical circuit, start at the problem and work back to the power source.

6-2. Main Switch

The main power supply, 120VAC, 60HZ, comes in through the power cord and through the main switch. The main switch opens both lines when in the "OFF" position. Two 10 amp fuses are used to protect the complete electrical system and are located next to the main switch.

a. Main Switch Test

The following test will determine if line voltage is applied to connector CN4, which in turn would power the table.

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Figure 6-3. Connector CN4

b. Test Results

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If you do not receive the correct voltage measurement, the problem would have to be in the wires, main switch, fuses or power cord. If the correct voltage is obtained, everything is good up to this point and the problem would have to be in another area.

6-3. Pendant Control

The Pendant Control consists of 12 micro-switches (buttons). When any of the circuits are completed (by depressing a control button) the appropriate relay contacts (located in the relay box) close applying 120V potential to the appropriate solenoid to operate the mini-valve and the pump/motor. The Pendant Control has only 5-6 volts applied to it.

a. Pendant Control Test

The following test will determine if the micro-switches inside the Pendant Control are functioning correctly.

1. Unplug the pendant control from the base of the table. You will be checking the cord side connector.

2. Use an ohmmeter R x 1 scale and check the continuity between pin 1 and pins 4 through 15. See figure 6-4.

3. Ohmmeter must show continuity between the pins that are indicated when the appropriate buttons are pressed.

NOTE

Pins 2 and 3 are connected to the LED (power on light on the pendant control) and cannot be checked with an ohmmeter.

Figure 6-4. Pendant Control Test

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b. Test Results:

If you do not receive continuity between any of the pins, either the micro-switch in the Pendant Control is defective or a wire is broken. Either of these problems can be repaired easily.

If you receive correct readings with the meter, the Pendant Control is okay.

c. Wiring Harness Test

The following test checks the wires leading from the relay box connector CN8 to the 19 pin connector table socket. These wires apply low voltage to the pendant control buttons.

1. The power cord should be plugged into the

wall socket and the main switch turned ON.

2. Disconnect the pendant control from the base connector. All other connectors should be connected.

d. Test Results:

If you do not receive the correct voltage reading, the wiring or connector pins may be faulty. Disconnect connector CN8 from the relay box and using an ohmmeter, test the continuity between the corresponding pins in connectors CN8 and the table base connector. See figure 6-6. If the correct readings are obtained, this part of the circuit is okay.

3. Use a DC voltmeter 10V scale and measure the following pins located in the 19 pin table base connector. See figure 6-5.

NOTE

Pin 15 in table base connector will have no voltage potential unless 1 of the return-to-level micro-switches are activated, i.e. trendelenburg or tilt.

Figure 6-6. Base Connector Continuity Test

6-4. Relay Box

initially

selected.

Also, inside the relay box is a step-down transformer and full-wave rectifier which decreases the line voltage to 5.5 volts. This low voltage potential controls the relays by the use of the hand-held pendant control buttons. Basically the relays enable a 5.5 volt potential to control the 120 volt circuit.

Figure 6-5. Table Base Connector

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The following tests will determine if the relay box is functioning correctly.

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c. Relay Box Output Connector CN8

a. Relay Box Input Connector CN4

1. Plug the power cord into the 120VAC power supply (wall receptacle) and turn the main switch ON. Leave all connectors connected.

CAUTION

Line voltage (120VAC) will be measured in this test. DO NOT touch uninsulated connector pins or meter test leads.

2. Use an AC voltmeter capable of measuring 120 volts and measure the voltage between pins 1 (white) and 2 (black) of connector CN4 for input voltage. See figure 6-7. Meter should read line voltage 120VAC.

3. Activate any table function with the Pendant Control and using an AC voltmeter, test the voltage at pins 3 and 4 of CN4 for output to the pump. Meter should read 120VAC.

This test checks the low voltage applied to the pendant control buttons.

1. The power cord should be plugged into the

wall receptacle and main switch turned ON.

2. Disconnect Pendant Control connector. All

other connectors should be connected.

3. Using a DC voltmeter, measure the voltage between pin 1(+) and pins 4 through 15(-) of the table base connector. See figure 6-5. Meter should read 5-6 volts.

d. Test Results:

If you do not receive the correct meter readings, the relay box or wiring is defective. If the correct readings are obtained, this part of the relay box is okay. Proceed to the next step.

e. Relay Box Output Connectors CN6 & CN7

This test checks the high voltage (120V) that is used to energize the solenoids.

Figure 6-7. Connector CN4

b. Test Results:

If you do not receive the correct meter readings, the relay box or wiring is defective. If the correct readings are obtained, this part of the relay box is okay. Proceed to the next step.

CAUTION

120VAC will be measured in this test. DO NOT touch uninsulated connector pins or meter test leads.

1. The power cord should be plugged into the wall receptacle and main switch turned ON.

2. Disconnect the motor connector CN15. All other connectors should be connected. Test connectors CN6 and CN7 from the back while attached to the relay box.

3. Activate each of the Pendant Control buttons and using and AC voltmeter capable of measuring 120VAC, measure the voltage between the appropriate connector pins located in connector CN6 or CN7. See figure 6-8. Polarity of meter test leads is not important. Meter should read 120VAC.

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3100N

a. Solenoid Test

The following tests check the voltage applied to the solenoids and the resistance of the solenoid coil.

NOTE

•If a solenoid does not function when the pendant control button is pushed, the problem could be the pendant control, the relay box or the solenoid.

•Each solenoid is controlled with 120V source coming from the relay box. This source can easily be checked by measuring the voltage at the 2 pin connector in question.

CAUTION

Figure 6-8. Relay Box Output Connectors

CN6 and CN7

f. Test Results:

If you do not receive the correct meter readings, the relay box or wiring is defective and should be replaced.

NOTE

Before deciding the relay box is defective, check the wires and pins in the connector blocks to make sure they are not loose or making a bad connection with their mate.

6-5. Solenoids

The solenoids are energized by 120 volt potential that is controlled by the relays located inside the relay box.

The solenoid windings are protected from excessive heat with an internal thermal fuse that will open after approximately seven (7) minutes of continuous operation. The solenoid must be replaced if the internal thermal fuse has been opened. The solenoids are mounted directly on either side of the hydraulic mini-valves and push the spool valve in one direction or the other depending upon which solenoid is activated.

Line voltage will be measured in this test. DO NOT touch uninsulated connector pins or meter test leads.

b. Step #1

1. Plug the table cord into the wall receptacle

and turn main switch ON.

2. Disconnect the 2 pin connector from the

solenoid in question. See figure 6-9.

3. Use a voltmeter capable of measuring 120VAC and measure the voltage across the 2 pin connector. Polarity of meter leads is not important.

NOTE

The appropriate Pendant Control button must be pushed during this test. The motor will run when this test is performed and the brake locking solenoid will be activated by any function other than UNLOCK.

c. Test Results:

If you do not receive the correct voltage, the problem could be in the wires leading to connectors CN6 and CN7. The problem could also be in the relay box or the Pendant Control (refer to appropriate section for troubleshooting).

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If the correct voltage is obtained, everything is good up to that point and the problem is more than likely the solenoid.

d. Step #2

The solenoid can be checked out using an ohmmeter R x 1 scale.

1. Measure the resistance between the two

pins of the connector in question. See figure 6-9.

Connector being tested must be disconnected. Polarity of meter leads is not important.

2. The meter should read approximately 80-90

ohms at room temperature.

3. Measure the resistance between either pin

and ground.

4. Meter should read infinity.

Figure 6-9 Solenoid Test

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e. Test Results:

If the solenoid does not check out with the meter, it is more than likely defective and must be replaced.

NOTE

6-6. Motor/Pump Assembly

The electric motor is a capacitor start type with a rating of 120VAC, 200 watts. The field windings are protected with a thermal protector that will open the winding circuit if the motor is run continuously for approximately 10 minutes. This protector will take about 10 minutes to automatically reset. The oil pump unit is attached to the bottom of the motor and is a gear type displacement pump with a pumping capacity of .4 liter per min. The Motor/Pump Assembly is mounted on an insulated motor plate in the base of the table. The starting capacitor is mounted along side the weights.

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Figure 6-10.

3. Use a voltmeter capable of measuring 120VAC and measure the following connector pins in connector CN15. See figure 6-11.

a. Motor/Pump Test

The following tests will check the voltage applied to the motor and the resistance of the motor field windings.

CAUTION

Line voltage will be measured in this test. DO NOT touch uninsulated connector pins or meter test leads.

b. Step #1

1. Plug the power cord into 120VAC power

supply (wall receptacle). Turn main switch ON.

2. Disconnect the 3 pin connector CN15 at the motor. Leave all other connectors connected. See figure 6-10.

Figure 6-11. Connector CN15

c. Test Results:

If you do not receive the correct meter readings, the problem could be in the wires, connectors, relay box or main switch (refer to appropriate section for troubleshooting).

If the correct voltage is obtained, everything is good up to that point and the problem could be either the motor or the starting capacitor.

d. Step #2

If the starting capacitor is shorted or grounded, the motor will not run. Capacitors very seldom fail and it requires a dielectric tester to accurately test one. However, an ohmmeter can be used to determine if the capacitor will store a low voltage charge and most of the time this is adequate.

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1. Turn the main switch OFF.

2. Connector CN15 should be disconnected.

3. Use the R x 100 scale of the ohmmeter and touch pins 2 and 3 of connector CN15. See figure 6-11.

e. Test Results:

The meter needle should move up scale and than back down to infinity. This would indicate that the capacitor is storing an electrical charge.

NOTE

The capacitor may have to be discharged first (by shorting pins 2 and 3 together) before you will be able to see the ohmmeter needle swing up the scale.

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1. Turn main power switch OFF.

2. Connector CN15 should be disconnected.

3. Use the R x 1 scale of the ohmmeter and measure the resistance between the pins located in the pump connector CN15. See figure 6-12.

Figure 6-12. Pump Connector CN15

f. Step #3

The motor windings can be statically checked for resistance using an ohmmeter.

g. Test Results:

If you do not receive the correct meter readings, the motor or wiring is defective.

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6-7. Return-to-Level Micro-Swiches.

The return-to-level feature is activated by a single button on the pendant control and automatically relevels the table top from the lateral tilt and trendelenburg positions.

The micro-switches are cam operated. They operate on 5 to 6 VDC, and control the function circuits (pump/motor and appropriate solenoid valves) exactly like the pendant control.

The micro-switches are wired to the relay box through the 15 pin connector CN2. See figure 6-13.

3100N

NOTE

If a problem is suspected in the return circuits, disconnect the connector CN2 from the Relay Box to eliminate the circuits. Ensure that all table functions operate properly using the Pendant Control. If the functions do not work properly using the Pendant Control, refer to the appropriate test section and make all needed repairs before working on the return circuits.

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Figure 6-13. Return-to-Level Micro-Switches

a. Switch Test.

1. Disconnect connector CN2 from the relay

box.

2. Use an ohmmeter to test the resistance between indicated pins located in connector CN-2. Refer to figure 6-14. Polarity of test leads is not important.

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Figure 6-15. Micro-Switch Covers

Figure 6-14. Return-to-Level Micro-Switch

Test

b. Switch Adjustment.

If proper readings are not obtained during test or if table does not properly return to level, use the following procedure to adjust the switches.

1. Apply table brakes and (using a level) level the table top using the TRENDELENBURG and LATERAL-TILT function buttons on the pendant control.

2. Remove micro-switch covers (refer to figure 6-15), carefully loosen the switch retaining screws and adjust the switches as needed. See figure 6-

16.

Figure 6-16. Micro-Switch Adjustment

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Skytron Elite 3100 User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PARTS CATALOG