Pelton Crane Delta XL Service guide

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Delta-XL - 8"

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Product Information

Table of Symbols

On/Off Power Switch

Power

Ground

Mode

Printer Connection

Clear/Start

Program

Hot Surface

Low Water

Dry

Printer On/Off

Arrows

Attention: Printer Connection Only

The conformity of the quality management system is certified with Certificate No. 369CE, dated April 8, 1999 by:

AMTAC Certification Services, LTD

Norman Road, Broadheath, Altrincham Cheshire WA 14 4EP, United Kingdom

The identification number of the notified body for implementation of the procedure set out in Annex V of the Directive is 0473.

The authorized representative :

Medical Device & QA Services

76, Stockport Road

Timperley

Cheshire

WA15 7SN

United Kingdom

Ready

Sterilize

Visual Index

1 Casing with Plumbing Diagram

(inside cover) 2 Fill 3 Front Frame 4 Door with Lock 5 Drain

(quick connection behind door) 6 Front Panel Microprocessor MPU 7 Power PCB 8 RTD (Steam) Sensor 9 Reservoir with Overflow Vent 10 Water Level Switch (inside reservoir) 11 Printer Jack 12 Solenoids 13 Drying Pump 14 Master Power Switch 15 Heating Element

(mounted on bottom of chamber) 16 Safety V alve 17 Filter 18 Transformer

Operating Features

1. Power Switch/Circuit Breaker (rear of unit)

2. Reservoir Fill

3. Operation Indicator Light

4. Display Window (Pressure) kPa

5. Arrow Switches

6. Display Window (Temp/Time) C/F / Minutes

7. Clear/Start Switch

8. Low Water Light

9. Mode Selection Switch

10. Mode/Program Display

11. Power On Switch

12. Programming Switch

13. Printer On/Off Switch

14. Quick Drain Connection (inside door)

15. Leveling Feet

16. Door Lock

17. Safety Valve (rear corner of unit)

18. Operating Instructions Label

19. Caution Label

20. Serial Number Plate (inside door)

Safety Features

The design of the autoclave has these safety features for your protection: Door Lock

Door can be opened only when internal pressure is at atmospheric pressure. Vent Valve

The vent valve will open and the P-2 alarm will display should the chamber pressure exceed 240 kPa. Safety Valve

The safety valve opens as backup protection should the chamber pressure exceed 262 kPa. Overheat Protection

Chamber temperature is protected with a surface sensor so the temperature will not exceed 159°C. It has additional overheat protection should the temperature of the heating elements reach 180°C.

Electrical Power Interruption In case of a power failure during the sterilization cycle, pressure in the chamber is automatically vented to the atmosphere and display is blank.

Chamber and Door

No. Part No. Description

1 15 39 845 Screw- Button Hd. 1/4 20 x .375" 2 41 97 245 Stud- Handle 3 01 97 54 Washer- Shim 1.0 oDX 15/32 IDX.016 4 15 39 258 Spacer- latch slide 5 41 96 809 Hinge Pin 6 15 39 589 E-Clip 3/8" 7 41 97 112 Door & Chamber Assy. (8"- Model AE)

41 97 179 Door & Chamber Assy. (10"- Model AF) 8 30 00 077 Nut- Retainer 9 42 05 790 Bracket- Lever switch (8"- Model AE)

42 05 808 Bracket- Lever switch (10"- Model AF)

10 33 22 281 Spacer- Door

11 15 39 241 Seal (8"- Model AE)

15 39 407 Seal (10"- Model AF)

12 42 03 845 Gasket Retain Stud Assy. (8"- Model AE)

42 03 985 Gasket Retain Stud Assy.(10"- Model AF)

13 15 39 928 Nut- Hex 41H 2520 14 15 39 894 Lock Washer- .26IDX.43ODX.05 STL 15 15 39 514 Insulation- Door (8"- Model AE)

15 39 720 Insulation- Door (10"- Model AF)

16 54 69 635 Locking Pin- 8x10 17 51 74 870 Slide- Bar (8"- Model AE)

51 74 888 Slide- Bar (10"- Model AF)

Chamber, Heating Element And Insulation

19 20

No. Part No. Description

1 15 39 670 Insulation- Rear 2 30 05 035 Strap- Insulation 3 15 39 472 Spring 4 15 39 647 Band- Pressure Plate 5 15 21 512 Overheat Protector- Chamber 6 41 91 826 Heater (8"-Model AE)

019769 Heater (10"-Model AF) 7 54 27 906 Insulation- Chamber 8 33 25 094 Surface Sensor 9 15 31 628 Sensor Bracket

10 15 21 158 Plate- Pressure

11 42 00 346 Tube- Chamber Top 12 15 39 803 Nut- Hex 41H-440 13 42 05 816 Cover- Level Switch 14 42 05 782 Switch Lever

No. Part No. Description

15 15 39 969 Phillips Hd. Screw- 4-40 x 1" 16 15 39 712 Spacer- Door Switch 17 18 81 023 Tube- Chamber 18 30 00 036 Round Head Screw- 8-32 x .375 19 41 96 767 Compression Sleeve- Pressure Plate 20 41 96 759 Compression Nut- 1/4" 21 18 81 031 Filter- Fill Line 22 42 07 432 1/4" Brass Plug

(Siemens 115, 230V & TUV 230V)

23.1 42 07 424 Elbow- 1/2 St 1/4 Tap

23.2 15 39 324 Elbow- 1/2 St (Delta-XL 115V) 24 42 05 055 Value- Safety Relief/Chain 25 15 36 486 Nipple- 1/2 NTPx4 26 15 29 267 Tube- Relief

(Siemens 115, 230V & TUV 230V)

Reservoir Parts

15 16

No. Part No. Description

1 33 39 913 Reservoir 2 41 96 924 Tube - Bel to Res (8"-Model AE)

41 96 999 Tube - Bel to Res (10"-Model AF) 3 18 81 056 Nut - Compression (5/16") 4 18 81 064 Sleeve - Compression, Tapered 5 15 39 449 Coupling - Vent Condenser 6 18 81 072 O-ring 7 33 25 052 Water Level Assembly 8 30 00 002 Washer - Flat 9 15 39 613 Nut - Air Valve

10 42 05 899 Tube- Dump to Res (8"-Model AE)

41 97 021 Tube- Dump to Res (10"-Model AF)

11 94 42 930 Dump Solenoid

12 94 42 724 Connector

No. Part No. Description

13 41 97 047 Tube - Chamber/Dump (8"-Model AE)

41 97 039 Tube - Chamber/Dump (10"-Model AF)

14 15 39 563 Washer - Rubber 15 18 81 080 Nut - Condenser Tube 16 18 81 098 Sleeve - Compression 17 18 81 106 Condenser - 4 Coil 18 94 32 311 Filter - Reservoir 19 15 26 412 Nut - Air Valve 20 41 96 932 Tube - Reservoir to Fill (8"-Model AE)

41 96 965 Tube - Reservoir to Fill (10"-Model AF) 21 15 35 587 Gasket - Support 22 94 35 546 O-ring 23 15 39 746 Cap Reservoir 24 41 96 841 Reducer 25 94 42 732 Tee-- Compession 5/16

Plumbing Parts

17.1

17.2

40 41

No. Part No. Description

1 41 93 376 Drain Hose Assy. (Incl. 2,3,4) 2 33 39 947 Tube Drain 3 15 22 502 Quick Connect Male 4 15 22 494 Quick Connect Female 5 41 96 973 Tube Fill to Ch 6 15 39 381 Elbow-White Polypropylene 7 15 39 274 Wire Tie 8 94 42 906 Hose Overflow 9 15 22 510 Hose Drain

10 15 39 365 Clamp - Hose

11 94 42 815 Pin Cotter 12 15 39 829 Ground Screw- 10-24 x .5 13 41 97 146 Air Filter 14 30 00 051 Lock Washer 15 30 00 028 Hex Nut 16 42 07 416 Pump Strap

17.1 33 25 086 Pump (Delta & Siemens 115V)

17.2 33 38 683 Pump (Siemens & TUV 230V) 18 42 05 923 Screw Button Head 19 42 05 915 GND Wire Pump 20 41 97 138 Holder-Filter 21 94 48 598 Tubing Connector-Short

No. Part No. Description

22 41 96 817 Bracket Valve 23 30 00 044 Screw 24 18 81 056 Nut 25 18 81 064 Sleeve 26 94 42 740 Elbow 27 15 39 837 Washer 28 94 42 922 Fill Solenoid 29 54 40 610 Elbow-90

5/16 x 1/8 Npt 30 54 40 602 Tube-1" Long x 5/16 O.D. x .049w Brs 31 94 42 948 Bellows Solenoid 32 41 96 981 Tube Bel to Ch 33 041572 RTD Sensor 34 94 48 598 Tubing Connector - Long 35 41 96 759 Nut 1/4 Comp. 36 41 96 767 Sleeve 1/4 Comp. 37 94 42 732 Tee-Compression 5/16" 38 54 40 628 Barb-3/16 x 1/8 Npt 39 54 73 017 Check Valve 40 18 81 056 Compression Nut 5/16" 41 18 81 064 Compression Sleeve 5/16" 42 044176 Clamp

Electrical Parts

No. Part No. Description

1 044201 Power Supply PCB Assy 2 94 42 765 Extension- Spacer Circuit Board 3 41 97 005 Power PCB Guard 4 15 28 368 Transformer 5 70 38 623 Terminal Block 6 30 00 051 Lock Washer 7 15 39 829 Ground Screw- 10-24 x .5 8 77 40 640 Strain Relief 9 15 30 661 Power Cord (115V)

041277 Power Cord ( 230V)

10 46 99 190 Circuit Breaker - 10A (230V)

46 92 208 Circuit Breaker - 20A (115V)

11 33 25 110 Cable- Printer Socket

12 30 00 028 Nut- Hex 41 H-1024

No. Part No. Description

13 045835 Control PCB Guard 14 42 05 923 Screw- Button Head 15 15 25 331 Screw Pan Hd - 32 x 5/16" 16 045841 Panel- Bottom (8"- Model AE)

045455 Panel- Bottom (10"- Model AF)

17 42 05 881 MPU Control Assy. (8"- Model AE)

041136 MPU Control Assy . (10"- Model AF) 18 18 98 639 Clip- Wire Harness 19 94 33 756 Heat Shrink Tubing 20 33 25 029 Cable- AC Power to Pwr PCB 21 42 07 390 Ground Wire- Terminal To Chasis 22 29 44 098 Label- Teminal Block 23 040788 Front Panel PCB Assy. 24 045487 Electrical Cover

Electrical Diagram

TOP SIDE

3 4

TB1

YELLOWRED BLACK

230V

No. Part No. Description

1 15 28 368 Transformer 120/240V, 40VCT 2 40 05 915 GND Wire to Pump TO Chasis 3 42 07 390 GND Wire Term to Chasis 4 42 07 374 Wire Blu (Trm Blck/Crct Brk) 5 15 39 274 Wire Tie High Temp. 6 70 38 623 Terminal Block 7 29 44 098 Label Terminal Block 8 42 07 382 Wire Brn (Trm Blck/Crct Brk) 9 15 30 661 Power Cord 115V)

041277 Power Cord ( 230V)

10 46 99 208 Circuit Breaker - 20 AMP (230V)

46 99 190 Circuit Breaker - 10 AMP (115V)

11 15 37 476 Cable AC Power to Power PCB 12 15 22 775 Power Supply PCB Assy 13 33 25 060 Cable Solenoid

TB2

No. Part No. Description

14 94 42 930 Dump Solenoid 15 94 42 948 Bellow Solenoid 16 94 42 922 Fill Solenoid 17 33 25 052 Level Switch 18 041572 RTD Sensor 19 42 05 782 Switch Lever 20 33 25 078 Cable Door Switch 21 33 25 094 Surface Sensor 22 33 25 110 Cable Printer Socket 23 42 05 881 MPU Control Assy. (8"- Model AE)

041136 MPU Control Assy. (10"- Model AF) 24 15 37 492 Cable Assy- Power PCB to MPU 25 41 91 818 Heater (8"- Model AE)

019769 Heater (10"- Model AF) 26 15 21 512 Chamber Overheat Protector 27 33 25 037 Wire Assy Over Heat Protector

Front Frame and Casing Parts

No. Part No. Description

1 18 81 114 Cup Reservoir Fill 2 51 49 815 Dou. Side Tape 3 045840DW Case (8"- Model AE)

045457DW Case (10"- Model AF)

4 045843DW Panel- Rear (8"- Model AE)

045456DW Panel- Rear (10"- Model AF)

5 045841 Bottom Panel (8"- Model AE)

045455 Bottom Panel (10"- Model AF) 6 42 05 048 Casing Gasket Set 7 045842 Front Panel (8"- Model AE)

045454 Front Panel (10"- Model AF) 8 51 63 550DW Door Cover (8"- Model AE)

51 63 535DW Door Cover (10"- Model AF)

9 045488 Handle- Granite

10 30 00 010 Screw- Soc. Hd. 6-32 x .375

11 15 39 985 Cap- 8-32 x .375 12 045487 Cover- Elect Assy . 13 15 39 423 Bushing- 1 5/16 ID 14 15 39 316 Nut- Speed 15 15 39 571 Bracket- Bottom Electronic Cover

28 27

No. Part No. Description

16 15 36 445 Rivet - Pop 8 CSNK 1/2 x .101/.130 17 30 00 036 Phil. Hd. Screw- 8-32 x .375 ZN 18 15 39 902 Screw- 85SS-1024-37 19 30 00 077 Nut- Retainer 20 15 39 852 Lock Washer 21 30 00 069 Screw- Mach. Rd. Hd. 8-32 x 1.25 22 15 39 183 Bracket- Top Electronic Cover 23 42 00 338 Reservoir Support 24 045459 Cover- Bottom 25 15 39 530 Clip- Speed 26 15 39 936 Mach. Slotted Screw- 10-24 x .375 27 15 39 910 Mach. Slotted Scew- #10 28 15 39 308 Foot 29 30 00 028 Nut- Hex 30 15 39 811 Washer- 8 O.D. 2143 046 31 4206459 Glide- Adjustable Swivel 32 045844 Brace- Right (8"- Model AE)

045464 Brace- Right (10"- Model AF)

33 045845 Brace- Left (8"- Model AE)

045465 Brace- Left (10"- Model AF)

34 042912 Operation Quick Reference Card

Tray and Tray Rest (8"- Model AE)

No. Part No. Description

1 30 00 143 Tray Rest (Delta 115V & TUV 230V) 2 15 39 290 Tray Rest (230V) 3 15 33 848 Clip-Tray Support 4 30 00 150 Baffle- Chamber (Delta 115V & TUV 230V)

5 15 39 548 Baffle- Export (230V) 6 15 39 696 Tray Handling Accessory 7 15 39 779 Tray- Export 8 15 39 761 Tray- Large Auto 9 30 00 135 Tray- Small Auto

Tray and Tray Rest (10"- Model AF)

No. Part No. Description

1 15 39 340 Large Instrument Tray 2 15 39 357 Small Instrument Tray 3 044159 Trayrest 4 30 00 184 Trayrest - Export 5 15 37 666 Clip- Tray Support 6 30 00 192 Splash Guard- Export

Time/Temperature Printer

Printer Kit- 54 37 590 (120V) Printer Kit- 54 37 624 (240V)

No. Part No. Description

1 54 37 525 Printer 2 54 39 166 Power Adapter - 11 5V

54 75 533 Power Adapter - 230V

3 54 30 595 Cable - Printer Jack

Important Notes

• Measurements

Instruments required

1. Digital multimeter model FLUKE 8000 A, or equivalent. Accuracy: AC voltage

0.5% of reading

plus 1 digit. DC voltage

0.1% of reading

plus 2 digits. DC current

0.3% of reading

plus 1 digit.

2. T estleads: Small needle point testleads are required when voltage measurements are performed at connectors which remain plugged.

Always switch the unit OFF before connect ing measuring instruments. Select the correct type of current/voltage and set the measuring range according to the expected measured values. Carry out continuity tests only with the unit switched OFF.

•

Warm-up period & self-test

Do not press any buttons when switching ON! After switching ON, the unit runs a self-test for the unit electronics.

When using the troubleshooting trees

•

and a connector is unplugged for continuity or

voltage measurements, the term:

“at lead” indicates that the measurement is to

be performed on the cable or “lead” end.

“at board” indicates that the measurement is to be performed on the PCB connector.

• Resetting the unit

Turn the power off at the main Power Switch. Turn unit back on after 10 seconds..

•

Replacing parts

Switch the unit OFF and unplug before replacing parts.

T o protect electrostatic-sensitive devices (ESD) on PC-boards, observe the ESD guidelines. Avoid coming into cont act with electronics components. As well as possible, handle PC boards only at the edge. Discharge yourself by touching a grounding point. Transport PC boards only in the original transport bags!

• Interference with electromedical devices by radio telephones

T o guarantee the operational safety of electromedical devices, the operation of mobile radio telephones in the medical practice or hospital area is prohibited.

• Troubleshooting tree guidelines

Element, component identifier: Located at the top of each page.

Unplug X4 See Figure 22. At lead, check continuity X4.A4 / X4.B4. Is

continuity present?

Yes

Refers to designated pictoral on preceeding page.

Find article numbers required for ordering replacement parts in the List of S pare Parts documents, order number P/L 4702135 for the 8” unit or P/L 4702143 for the 10” unit. The pictorial representations in the spare parts list offer valuable assistance for replacement of parts.

Removing/Reinstalling Cover

1. To remove cover, remove only the two bottom screws of rear panel.

2. Remove reservoir fill cup.

3. Slide cover to rear , then lift front of cover slightly to clear top of reservoir .

Note: When replacing cover, make sure lip of front panel engages in slot along all edges. Reinstall screws and reservoir fill cup.

The S terilizer is a fully automatic autoclave, which allows an operator to select one of the four preset functions (Wrapped, Unwrapped, Packs and Liquids) and one user-programmable function (Special) for sterilization or disinfection. The microprocessor automatically selects the cycle time, temperature and pressure for the preset programs. See User Manual.

When the operator depresses the “CLEAR/ST ART” button, the unit will display the selected mode’s parameters for four seconds and then fill the chamber with distilled water from the reservoir . When the filling period is complete, automatic activation of the heating elements builds temperature and pressure for the desired cycle.

As the temperature in the unit rises above 90o C., the microprocessor monitors the unit for saturated steam conditions and starts the air bleeding process via an electronic bellows function. If this process cannot be completed in seven minutes, then the unit automatically aborts the cycle and displays a flashing “F AIL” on the display to indicate possible blocked or defective bellows. See “FAIL” in the Troubleshooting section. The cycle is aborted at this point to avoid a possible overpressure condition.

At the point that saturated steam conditions are met, the unit will continuously build temperature and pressure to the minimum values of the mode selected. These values are: 134OC and 216 KPa for Wrapped and Unwrapped, 121OC and 1 15 KPa for Packs and Liquids.

For the S pecial mode, the values can be set to the operator’s preference. See User Manual. Once sterilization parameters are achieved, if the pressure drops more than 4 KPa below the selected

pressure, or if the temperature drops more than 1OC below the selected temperature, the countdown timer will stop until these parameters are again met. If the timer does not resume countdown within three minutes, the unit will automatically abort the cycle and display “FAIL” continuously. See “FAIL” in the Troubleshooting section.

After the cycle is complete and the chamber is vented, the drying cycle begins. Filtered ambient air is pumped through the chamber for a preset time. The time is set at the factory for 30 minutes, but can be changed from 0-99 minutes. See User Manual.

Error Code Explanations

1. H20- Insufficient water in sterilizing chamber.

2. Fail- a) Unit takes more than 45 minutes to reach operating temperature; b) Door opened after “FILL”, display extinguishes; c) Unit takes more than 7 minutes between 101 d) More than a 3 minute lapse in sterilize countdown due to leak causing more than 4 KPa pressure or if pressure decrease.

3. Door- Door not fully closed during fill cycle.

4. P1- Pressure sensor out of calibration or not working.

5. P2- Unit reaches 241 KPa before displaying 135o C.

6. SS-1- Steam sensor is defective or autoclave is too cold (Under 10o C.).

7. SS-2- Surface sensor circuit open during self test.

8. SS-3- Steam sensor too hot (Over 140o C.).

9. LB- Low battery condition in front control panel.

C. and 1 10o C.;

10. U1- Transformer problem.

11. S1- Fill/ Vent solenoid coil or circuit open.

12. S2- Dump solenoid coil or circuit open.

13. S3- Bellows solenoid coil or circuit open.

Component Description by Function

• Door Lock

The door locking mechanism prevents opening of the door while the unit is pressurized.

Safety Valve

•

The safety valve serves as backup protection in case of over pressure in the chamber. The safety valve opens if chamber pressure exceeds 2.6 bar

NOTE: When replacing the safety valve, use only the type for which the unit was originally certified.

Fill/Vent Solenoid

•

The fill / vent solenoid serves two purposes under software control:

• When in the fill process this, solenoid allows water to enter the chamber from the reservoir. It is open for a minimum of one minute during this process. It will be open for longer periods of time as each successive cycle is run based on the amount of water in the reservoir. If there is pressure in the unit at the time the fill cycle starts, then this timer will be delayed until all pressure has been exhausted in order to facilitate rapid cycling of the unit.

• When in the venting process, and the pressure is between 0.40 and 0.20 bar, this solenoid is used to extract the Water from the chamber.

Bellows Solenoid

•

This solenoid is under software control and also serves two purposes:

• When in the venting process, this solenoid is used to exhaust the pressure from the working value down to 0.40 bar.

• When in the air-bleeding process, this solenoid is used as an electronic bellows to remove the air from the chamber in order to obtain saturated steam conditions.

Dump Solenoid

•

This solenoid is under software control. Its primary purpose is to rapidly exhaust residual chamber pressure. Normally, during the venting process, it will be opened at 0.20 bar, but it may be opened during the filling process to exhaust residual pressures.

Reservoir Assembly

•

The reservoir assembly holds water (approx. 4 liters) for filling the autoclave chamber. Drain tube in the reservoir allows the operator to drain from the front of the sterilizer (see User Manual, “Maintenance”).

The condensing coil in the reservoir condenses steam, coming from the chamber, back into water for reuse in the next cycle.

Water Level Indicator

•

A float mechanism activates the low water light on the front panel when water level in reservoir drops (see User Manual, chapter “Operations”).

Heating Element

•

The heating element allows for even heating of the chamber. The power level is controlled by the microprocessor for preheat, sterilization and drying cycles. When the unit is turned on, the heaters are energized in preheat mode (06001800 hrs) to minimize the warm-up time for the first cycle. The heaters modulate ON/OFF at a given duty cycle and depend upon the incoming line voltage and frequency in every process.

Air Pump and Filter

•

A positive displacement air pump forces ambient air through a 0.3 µm filter and then through the chamber for the programmed time.

Microprocessor MPU / Front Panel Printed Circuit Board

•

There are two PC boards located underneath the front cover, which contain the microprocessor and the display driver/ push button controller. These two PCBs are stacked one on top of the other.

The top PCB is the microprocessor board, which has LEDs and test points for monitoring the input-output status of the processor.

The bottom PCB is the display driver/ Push-button controller. WARNING: If the Display (bottom) PCB is defective, return it with the display and cover intact. Do NOT attempt to remove it

from the cover !

Power Board

•

This PCB carries all of the necessary driver circuitry for the solenoids and the heater and the interfaces for all temperature sensors and the pressure sensor. This PCB has indicators and test pins for monitoring the input/output status of this board.

Transformer

•

This Transformer generates all of the low voltage supplies required to operate the unit.

Audible Signals

The Sterilizer provides some of it s status information through audible signals: A single beep sounds each time a button or the main power switch is activated. Five continuous beeps indicate the beginning of the drying cycle. Five more beeps indicate the completion of the

drying cycle. Continuous beeps for one minute indicate an operational error. Beeper can be silenced during an operational

error by depressing the “CLEAR/ST ART” button. Be sure to record the display status before depressing the button as the display may also be cleared at this time. (The “DOOR” alarm is cleared if the door is closed).

• After loading the Sterilizer, close the door , select the proper Mode and depress “CLEAR/ST ART”. The unit will display selected modes parameters for four seconds, after which it will display “FILL” as water runs in from the water reservoir into the chamber.

After filling, the display will show the current pressure (“PRES”) and temperature (“TEMP”). The heater will begin cycling on and off to start chamber heat-up and pressure build-up. Pressure should start to build at about 90o C.

Once the sterilization cycle begins, it is controlled by the pressure. The sterilization timer will be shown in the lower window, (unless the operator has programmed the unit to show temperature during the sterilization instead of time) and will count down when the select temperature and pressure parameters are above their minimum values.

If pressure loss occurs, the timer will pause, since it only counts down when the select temperature and pressure parameters are above their minimum values. A “F AIL” alarm will occur if the cycle pauses for more than a total of three minutes because of pressure loss.

• At the end of the sterilization time, the bellows solenoid opens to lower chamber pressure to 40 KPa. When the pressure reaches 40 KPa the bellows solenoid will close and the fill/vent solenoid will open and the remaining water will be extracted from the chamber. This process continues until the pressure reaches 20 KPa, at which time the fill/vent solenoid will close and the bellows solenoid will reopen along with the dump solenoid, to rapidly vent the remaining pressure. (The “Liquids Cycle” is an exception: This cycle cools down without venting to prevent the liquids from boiling over from a sudden pressure drop).

• At this point, the drying cycle begins. A nominal 30 minute drying cycle is preprogrammed. The drying time can be changed from 0-99 minutes. See User Manual. T o start another load, depress “CLEAR/START” to initiate the sterilization process again.

See also User Manual.

T able: Valve Actuation Operation Mode

Self-Diagnostics Check

To run self check, simply turn on main power switch at back of unit and wait for the unit to beep and finish a series of clicks. At this time, depress and hold the “CLEAR/START”, then depress the “POWER”, letting go of both at the same time.

This operation does not check “Lb” for low battery . The printer may be used as a diagnostic tool. Cycles recorded in the Sterilizer’s memory may be

downloaded to the printer starting with the last cycle first. Press and hold the “PRINTER” button to download the memory . T o stop the download process, depress “CLEAR/ST AR T”. Eight lines are printed out per run cycle.

Note: Unit will turn off after the download process is complete.

Specific Usage Problems

Mineral buildup on chamber wall or water spots on chamber and contents.

• Problem Cause Minerals in water deposit on chamber or on contents.

• Corrective Action Clean per User Manual. Refill using distilled demineralized water.

Unit takes an excessive amount of time (over 21 min. from warm start) to reach sterilization temperature.

• Problem Cause

1. Load is too large.

2. Low power line voltage.

3. Leak in valves.

• Corrective Action

1. Remove some packages/articles for faster heating.

2. Correct voltage if possible.

3. Refer to “ FAIL” in T roubleshooting.

Water flows into bottom of S terilizer when unit is not in “FlLL” cycle.

• Problem Cause

1. Leaking fill solenoid valve.

2. Hole in condensing tube.

• Corrective Action

1. Clean or replace fill solenoid valve.

2. Replace condensing tube.

Unit drips on counter when door is opened after cycle.

• Problem Cause Rubber spacer missing or damaged.

• Corrective Action Replace rubber spacer .

Water comes out of fill opening on top of case when unit vents to reservoir .

• Problem Cause

1. Reservoir overfilled.

2. Cracked or loose condenser tube causing turbulence.

• Corrective Action

1. Drain some water. With unit in st andby and chamber dry , fill only to bottom of filler cup opening.

2. Tighten or replace condenser tube.

Dark stains on instruments

• Problem Cause

1. Electroplating.

2. Chlorine stains.

• Corrective Action for

1. Do not mix dissimilar metals in the same package. Separate carbon steel, aluminum chrome and brass

from stainless steel trays by using a tray liner .

2. Do not use toweling or packaging which may contain chlorine bleach residue.

Chamber cracks

• Problem Cause Chlorine.

• Corrective Action Never use chlorine cleaners or materials in chamber. W rapping materials should not be cleaned with chlorinated bleaches.

Plumbing Diagram

1. Reservoir

2. Condensing Coil

3. Filter (Reservoir)

4. Dump Solenoid

5. Bellows Solenoid

6. Fill/Vent Solenoid

7. Chamber

8. Filter (Chamber)

9. Air Tube

10. Check V alve 1 1. Filter (Air)

12. Air Pump

Troubleshooting H2O (Path A) - Unit Will Not Fill Properly

The H2O alarm is a direct response from the Surface Sensor. The Surface Sensor is a temperature sensitive device that is fastened to the underside of the chamber. It monitors the temperature of the chamber and can distinguish, by the increase in temperature, when the water level has receeded beyond a safe level. At this point (159o C.), the Surface Sensor opens and H2O is displayed. This is to prevent a boil dry situation that can ruin the heating element and chamber . This is caused by one of the following conditions: A) The chamber will not fill properly; B) The unit is not properly leveled; C) The chamber leaks under pressure; D) Defective or loose Surface Sensor or defective cable.

Close the door and start an “Unwrapped” cycle. When the “FILL” display changes to a temperature and pressure display , open the door. This will abort the cycle. Is the water level in the chamber approximately half way up the dam in the front of chamber?

Clean or replace reservoir filter and chamber filter. Does chamber fill properly now?

See Figures 8 and 9.

Yes

See “H2O (Path B).”

Unit is OK. Run another cycle to test.

Is the unit properly leveled?

Yes

Is the reservoir filled to the correct level with distilled water?

Yes

See Next Page

Adjust the front feet, so that the front of the unit is approximately 1/4” higher than the rear .

Be sure to fill the reservoir to the bottom of the fill cup with distilled water.

Figure 8.

Figure 9.

Troubleshooting H2O (Path A) - Unit W ill Not Fill Properly (cont’d)

Yes

Was the unit drained of all its water or

Yes

recently moved to a new location?

Close the door, remove the casing and start an unwrapped cycle. Observe LEDs D20 and D18 on the Power PCB. Are they illuminated?

See Figure 3.

Yes

See Next Page

The unit could have an air lock preventing it from filling. Manually fill the chamber, with distilled water, to the top of the dam located at the front of the chamber. Close the door and depress “CLEAR/ST ART”. This will eliminate the air lock and allow the unit to fill properly .

Turn the unit ON. Remove screws and

lift off Front Control Panel, leaving cables connected. Press the “CLEAR/

ST ART” button. Does LED D3 (“Fill/ Vent”) illuminate?

See Figure 1.

Yes

Check ribbon cable between MPU PCB and

Power PCB. Is it open or disconnected?

See Figure 4.

Yes

Replace MPU PCB.

Replace Power PCB. See repair procedure.

Reconnect or replace.

Figure 1.

DUMP

D18

FILL VENT

D20

Figure 4.

Figure 3.

Troubleshooting H2O (Path A) - Unit W ill Not Fill Properly (cont’d)

Yes

Measure the voltage of all three solenoids while “FILL” is displayed on the front panel. The voltage should be approximately 12VDC at the fill and dump solenoids and 0VDC at the bellows solenoid.

See Figure 2.

Yes

Disconnect power to the unit, unplug one wire from each solenoid and measure the resistance of the solenoid coils. The resistance should be approximately 16 OHMS.

See Figure 7.

Yes

Check dump and fill/vent solenoids and tubings for blockage.

Check for 12VDC output from

Replace solenoids as necessary .

Power PCB at connector P5, pin 1-pin 4 for dump solenoid and pin 3 - pin 6 for the fill/vent.

See Figure 4.

Check solenoid cables, between solenoid & Power PCB. Are cables disconnected or damaged? See Figure 6.

Yes

Reconnect properly or replace cable.

Replace Power PCB. See repair procedure.

Figure 4.

Figure 2.

Figure 6.

Figure 7.

Troubleshooting H2O (Path B) - Chamber Loses Excessive Water

As the chamber begins to build pressure, excess water will start returning to the reservoir through the condensing coil via the bellows solenoid. At 90o C., the air purging process begins. This process opens and closes the bellows, while sampling for a pure steam atmosphere. The purging process is complete at 1 10o C. After this occurs, no water should return to the reservoir until sterilization is complete.

Branch 2

“Checking for External Leaks”

Close the door and start and “Unwrapped” cycle. After the unit reaches 1 11o C., is any water or steam returning to the reservoir?

Yes

Branch 1

“Checking for Internal Leaks”

Is water or steam returning through the condensing coil after the unit reaches 1 1 1o C.?

See Figure 12.

Is water or steam returning through the fill filter located in the reservoir?

Note: Look for a disturbance in the water around the filter.

Yes

Check for obstruction in bellows solenoid. Replace plunger kit for the bellows solenoid if the solenoid resistance is approximately 16 OHMS. If the resistance is not approximately 16 OHMS replace the bellows solenoid.

See Figure 10.

Check for obstruction in fill solenoid. Replace plunger kit for the fill solenoid if the solenoid resistance is approximately 16 OHMS. If the resistance is not approximately 16 OHMS replace the fill solenoid.

See Figure 14.

Are there any external water leaks with the unit running and under pressure?

See Next Page

Branch 2

Condensing Coil

Yes

Tighten or replace parts as needed.

See Next Page

Branch 1

Figure 12.

Figure 10.

Figure 14.

Troubleshooting H2O (Path B) - Chamber Loses Excessive Water (cont’d)

Branch 1

Is water or steam returning through the tubing in the top of the reservoir, located under the square lid?

Yes

Check for obstruction in dump solenoid. Replace plunger kit for the dump solenoid if the solenoid resistance is approximately 16 OHMS. If the resistance is not approximately 16 OHMS replace the dump solenoid.

See Figure 15.

Branch 2

Is water or steam leaking from the door?

Solenoids are OK.

!CAUTION!

IF ALL OF THESE CONDITIONS ARE MET AND THE UNIT STILL

HAS H2O FAILURES, TIGHTEN HEA TER BANDS AROUND CHAMBER

AND/OR REPLACE SURFACE SENSOR.

Figure 15.

Yes

Check to see if items in chamber are blocking door open.

Replace door gasket.

Is steam leaking out of the safety relief valve?

See Figure 13.

Yes

Pull and release the chain on the safety valve to reseat it. Does this stop the leaking?

See Figure 13.

Replace the safety relief valve.

Yes

Remove and run another cycle.

Check for cracked chamber or other signs of water leakage from the chamber.

Unit is OK.

Figure 13.

Troubleshooting P1

Observe the temperature (in degrees C.) and the pressure (in KPa) on the front display panel. Do they correlate or become numerically equal between 122o and 125o C.?

See Figures 15 & 16.

Replace steam sensor. Again observe the temperature (in degrees C.) and the pressure (in KPa) on the front display panel. Do they correlate or become numerically equal between 122o and 125 C.?

Yes

Unit OK.

Figure 15.

Yes

Unit OK.

Figure 16.

Replace Power PCB.

Troubleshooting P2

Note: Program the unit to display temperature in degrees C., and pressure in KPa.

Is steam/water returning to the reservoir through the condensing coil between 90o and 1 10o C.?

Yes

Is the RTD (steam) Sensor properly connected at P13 of the Power PCB?

Yes

Measure voltage from TP6 to TP8 on the power PCB.The voltage should

Yes

read10mV per degrees C. (ie, 100mV = 10o C.)

See Figure 18.

Reconnect RTD Sensor .

RTD Sensor OK.

Does LED D17 (Bellows) on Power PCB cycle OFF and ON between 90o C. and 1 10o C.?

See Figure 17.

Yes

Check bellows coil for correct resistance.It should be approximately 16 OHMS. See Figure 16.

Yes

Check and inspect bellows solenoid and associated lines for blockage.

Check heater LED D15, it should flash on and off continuously . Is it ON continuously?

See Figure 19.

Yes

See Next

Page

Branch 2

Replace Bellows Solenoid.

Replace Power PCB.

OVERHEAT

HEATER

PROTECTOR

HEATER

PROTECTOR

D15

D14

D15

D14

See Next Page

Branch 1

Figure 16.

Figure 17.

BELLOWS

D17

Figure 19.

Figure 18.

Troubleshooting P2 (cont’d)

Note: Program the unit to display temperature in degrees C., and pressure in KPa.

Branch 1

Observe the temperature and pressure windows on the front display . As temperature and pressure are going up, pressure should numerically equal temperature on KPa/oC. scale, or correlate, between 122o and 125o C.

Replace Steam Sensor . Observe the temperature and pressure windows on the front display . As temperature and pressure are going up, pressure should numerically equal temperature on KPa/

C. scale, or correlate, between 122

and 125o C.

Replace Power PCB.

Yes

Temperature and pressure components are OK.

Branch 2

Does LED D4 (Bellows) on Front MPU PCB cycle OFF and ON between 90o and 1 10o C?

See Figure 4.

Yes

Check ribbon cable. Is it properly connected? See Figure 5.

Yes

Check continuity of ribbon cable. If it checks out OK, replace Power PCB.

Replace MPU PCB.

Replug ribbon cable.

Figure 4.

Figure 5.

Troubleshooting Fail (Path A) - Unit Fails Between 900 C & 1 100 C

The Fail alarm is a response from several different sensors and aborts the cycle because a condition has been detected that will not allow the completion of a successful cycle. The following conditions will cause a Fail alarm: A) The air purging cycle (between 101o C. and 1 10o C.) takes more than 7 minutes; B) The unit takes more than 45 minutes to reach sterilization parameters; C) During the “Sterilization” portion of the cycle, the chamber temperature or pressure drops below minimum parameters for 3 minutes (accumulated time); D) The door circuit is interrupted after the “Fill” portion of a cycle is complete.

Note: The first three conditions will show a constant “Fail” display. The fourth condition flashes “Fail”.

The microprocessor allows 7 minutes for the unit to purge air out of the chamber. This process begins at 90o C., and ends at 1 10o C.

Does LED D17 (Bellows) on Power PCB begin cycling at about 90o C.?

See Figure 3.

Yes

Does Bellows solenoid respond when LED D17 cycles?

Yes

When the Bellows solenoid is activated, does a strong blast of steam exit the condensing coil in the reservoir? When the solenoid deactivates, does steam have a positive “Off” action with no leaking?

See Figure 2.

Yes

See Next Page Branch 1

Disassemble

Bellows solenoid and check for blockage. Rebuild or replace as needed. Also check tubings for blockage.

Does LED D4 (Bellows) on MPU PCB begin cycling at about 90o C.? See Figure 4.

Yes

Check ribbon cable for proper connection and continuity . If cable checks OK, replace Power PCB.

Replace MPU PCB.

Check for 12VDC at connector P5.2 to P5.5 on Power PCB while LED D19 is illuminated. Is voltage present? See Figure 1.

Yes

Check for 12 VDC at Bellows solenoid terminals while LED is illuminated. Is voltage present?

Yes

See Next Page Branch 2

Condensing Coi

Defective or loose cable. Repair or replace.

Replace Power PCB.

Figure 1.

Figure 2.

Figure 4.

Figure 3.

Troubleshooting Fail (Path A) - Unit Fails Between 90 C & 110 C (cont’d)

Branch 1

Yes

Verify that the Dump and Fill/ Vent solenoids are not leaking. See “H2O (PATH B) - CHECKING INTERNAL LEAKS” section. Are they seated properly?

Yes

See “FAIL (P A TH B) - CHECKING HEA TING ELEMENT .”

Clean, repair or replace as necessary .

Branch 2

Yes

Unplug leads from Bellows solenoid and check for approximately 16 OHMS resistance.

See Figure 4.

Yes

Disassemble Bellows solenoid and check for blockage. Rebuild or replace as needed. Also check tubings for blockage.

See Figure 5.

Replace solenoid.

Figure 4.

Figure 5.

Troubleshooting Fail (Path B) - Unit Fails Between 1 100 C & Sterilization T arget

Unit takes more than 45 minutes to reach sterilization.

During the first 10-15 minutes of the sterilization cycle, does the unit reach at least 90o C.-1 10o C.?

Yes

Is the unit building pressure?

Yes

Allow the unit to cool. Remove RTD (Steam) sensor from the rear of the chamber . Place it in ice water until display reads 0o C. Turn unit off, unplug RTD sensor from Power PCB (connector P13) and measure resistance across the sensor. Is the resistance approximately 1000 OHMS?

Yes

See Next Page

Branch 1

See Checking for

Internal/External Leaks in “H2O” section.

Replace RTD sensor.

Is the Overheat Protector

Yes

LED D14 on the Power PCB illuminating? See Figure 20.

Is the Heater LED D15 on the Power PCB cycling ON and

OFF? See Figure 20.

Yes

CHECKING HEA TING ELEMENT- 8" MODELS

Disconnect power to the unit. Remove the three heater wires from Power PCB at TB1. Measure the resistance between each white wire and the black wire.This should be approximately 16 OHMS for each white wire to the black wire. See

Figure 19.

CHECKING HEA TING ELEMENT- 10" MODELS

Disconnect power to the unit. Remove the two heater wires from Power PCB at TB1. Measure the resistance between the two white wire. This should be approximately 10 OHMS. See Figure 21.

Check for defective Overheat Protector or loose connection. Repair or replace as needed.

Replace Power PCB.

Replace Heating Element.

OVERHEAT

PROTECTOR

HEATER

D14

D15

Figure 20.

10" MODELS

Figure 21.

BELLOWS

D17

See Next Page

Branch 2

8" MODELS

Figure 19.

Troubleshooting Fail (Path B) - Unit Fails Between 1 100 C & Sterilization T arget (cont’d)

Branch 1

Yes

During a cycle, does the crossover (the point at which the steam value in KPa equals the temperature value in o C.) occur between 122 and 125?

Yes

Check for improper loading methods in chamber. Run an empty load. If it runs OK, unit was overloaded.

Defective Pressure Transducer . Replace Power PCB.

Branch 2

Yes

Measure resistance from each heating element lead to the frame of the chamber. The reading should be infinite. Is it?

Yes

Leave the wires disconnected and reconnect the unit. Start a cycle. Measure for line voltage output at connector TB1.1-TB1.2, and TB1.3-TB1.2 for 120V units and TB1.1-TB1.3 for 230V units. (This output will be cycling ON and OFF with LED D15). See Figure 1.

Yes

Check for improper loading methods in chamber. Run an empty load. If it runs OK, unit was overloaded.

The element is grounded. Replace element.

Replace Power PCB.

10” (AF)

120V AF-006000 and UP

Two Wire Heater

120V WHITE 120V

WHITE

Figure 1.

Troubleshooting Fail (Path C) - Unit Fails Af ter Reaching S terilization Parameters

If the unit fails during this portion of the cycle, it is due to a steam leak.

Remove the unit cover and start an “Unwrapped” cycle. When the unit reaches sterilization lift the lid off of the reservoir . Check for leaking solenoids as described in “CHECKING FOR INTERNAL LEAKS” in the “H20” section. Are solenoids leaking?

Yes

Check for door leaks. It may be necessary to remove the door cover

to check this. T o remove door cover , first remove 2 Allen screws from Repair , clean or replace Solenoid as needed.

the side of door handle and slide handle off. Open door and remove 4

screws that hold cover on. If the door is leaking, check the following

conditions:

1 ) Verify that tray rest inside the chamber is not blocking door open.

2 ) Remove door gasket. Check for debris in or behind gasket. Check

for cuts or wear . Gasket is reversible, but should be replaced if it does

not fit tightly in the ring.

3 ) Check the face of the chamber that contacts the door gasket. If a

mineral deposit has accumulated, remove with Scotch-Brite or Bon-

Ami.

4 ) Check the 4 screws that hold the front frame to the chamber (2

between hinges and 2 between locking posts). Tighten as necessary .

5 ) On older units, it may be necessary to replace the door insulation.

This is located between the door frame plate and the plate that holds

the door gasket. Is door leaking?

With unit still in sterilization parameter, hold a mirror under the discharge line of the Safety V alve. Does the mirror fog up?

See Figure 3.

Yes

Replace Safety V alve.

Repair as needed.

Pull silicone tubing off drying pump filter . When the unit is pressurized, is steam leaking from tube?

Yes

Replace Check V alve.

Connectors

Val ve

With a small mirror, (while unit is under pressure) check each plumbing filling for steam leaks. Tighten or replace as needed.

Gasket

Figure 3.

Troubleshooting Fail (Path D) - Fail Flashes On Display

Door switch circuit was interrupted after “Fill” function was completed.

Was door opened after fill display

Yes

changed to temperature/pressure?

Turn unit off and unplug. Remove the cover. Unplug connector P9 from Power PCB. Measure resistance between the two wires with the door closed. Is continuity present?

See Figure 6.

Check condition of the cable. Replace if damaged. If cable is OK, remove the 2 nuts securing the door switch cover just below the lower door locking tab. The switch closes the circuit when depressed. Readjust, tighten or replace switch as needed.

Yes

Unit is OK. Close door and start another cycle.

Check for intermittent connection on cable or switch.

Figure 6.

Troubleshooting Unit Does Not Dry Properly

Note: Be certain the chamber has not been overloaded. See User Manual. If not overloaded, continue below.

Has the unit been properly leveled?

Yes

Remove trays and tray rest from chamber . Run an “Unwrapped”cycle. When the sterilization portion is complete and the chamber vents to 0 KPa, open the door .

!CAUTION! DO NOT PLACE ANY P ART OF YOUR BODY (HEAD, ARMS, ETC.) ABOVE DOOR AS STEAM WILL BE COMING OUT OF CHAMBER.

Is there any water in the chamber?

Yes

Check, clean, or replace chamber and reservoir filters. Be sure the filter in the chamber is installed securely and touching the bottom of the chamber.

See leveling instructions in User Manual.

Has the drying cycle been programed too short?

Check technique of drying such as: Placement of bags in the chamber; type of bags used and if the door was shut during the drying cycle. Is chamber loading technique OK?

Is the air filter for the air pump dirty or clogged?

See Figure 22.

Yes

See drying time programming instructions in the User Manual.

See User Manual.

Yes

Replace filter.

Figure 22.

See Next Page

Dirt In Filter

Troubleshooting Unit Does Not Dry Properly (cont’d)

Is there any moisture in the air filter?

See Figure 23.

Is the pump running during the dry cycle?

Yes

Remove air line from inlet of filter and check for air flow.

See Figure 25.

Remove air line from pump. Is air flow present?

See Figure 24.

Yes

Replace Air Line.

Yes

Replace the filter and Check V alve, located in the tubing between the filter and the chamber.

Check for 120 V AC at connector P4 on Power PCB. Is voltage present?

See Figure 28.

Defective Power PCB.

Remove air line from outlet of filter and check for air flow.

See Figure 26.

Replace Air Filter.

Replace Air Pump.

Remove air line

Yes

from Check Valves. Is air flowing from the tubing?

See Figure 27.

Replace Tubing.

Yes

Defective Air Pump or cable. Repair or replace as needed.

Yes

Reinstall filter . Is air flow still present?

Yes

Air flow should be present in reservoir at condensing coil and dump solenoid malfunction or blockage.

Open chamber door and remove chamber filter. Is air flow present?

Yes

Replace Check

V alve

Clean or replace chamber filter.

Figure 23.

Water In Filter

Figure 26.

Pumping Air

Figure 27.

Pumping Air

Figure 24.

Figure 25.

Figure 28.

Pumping Air

Troubleshooting Unit Will Not Turn On

Is the unit plugged in? Is the main power switch in the On position? Is there power to the outlet?

Plug the unit in and turn it ON.

For 120 volt units: Check for 120 volt output to transformer at connector P6.1 to

Yes

P6.2 and P6.3 to P6.4. Is voltage present? For 240 volt units: Check for 240 volt output to trans-

See Next Page

Branch 1

former at connector P6.1 to P6.4. Is voltage present?

See Figure 25.

Depress “POWER” button

Yes

on the front panel. Does the unit turn on?

Are LEDs D1 1, D12 and D13 on the Power PCB illuminated?

See Figure 28.

See Next Page

Branch 2

Yes

Unit is OK.

Check for +12, -12, +24 and +5VDC power supplies

Yes

on MPU PCB. Ref: +12 TP1(+) - TP5(-)

- 12 TP2(+) - TP5(-) +5 TP3(+) - TP5(-) +24 TP4(+) - TP5(-)

See Figure 29.

Yes

Is +56VDC present at TP7+ - TP5- on MPU PCB? See Figure 26.

Yes

Does D1 POW light when power button is depressed?

See Figure 27.

Yes

Replace display PCB and cover assembly.

Replace display

PCB and cover assembly.

Defective or loose ribbon cable. Repair or replace as needed.

Fig. 25.

Figure 26.

Defective MPU PCB.

Figure 28.

Figure 27.

Figure 29.

Troubleshooting Unit Will Not T urn On (cont’d)

Branch 1

Yes

Check for low voltage return from transformer at P7. See Figure 32. P7.1 - P7.2 and P7.3 - P7.2 should be 16V AC each.P7.1 - P7.3 should be 32 VAC each. Are voltages present?

Yes

Check fuse F1 on Power PCB. Is fuse OK? See Figure 29.

Yes

Check the following DC voltages on Power PCB: +12VDC TP2(+) - TP8(-) +5VDC TP9(+) - TP8(-) +24VDC TP10(+) - TP8(-) +15VDC TP1 1(+) - TP8(-) Are these voltages correct?

See Figure 31.

Defective trans-

former or cable. Repair or replace as needed.

Replace fuse. Does fuse blow again?

Yes

Replace Power PCB.

Unit is OK.

Branch 2

Is proper voltage present at P3.1-P3.3 (120V AC or 240V AC) and is voltage selector switch SW1 in correct position?

See Figures 30 & 32.

If voltage is not present, recheck incoming power and unit circuit breaker. Turn unit circuit breaker Off and back On. Is power present now?

Defective unit circuit breaker or cable. Repair or replace as needed.

Yes

Replace Power PCB.

Unit is OK.

Power PCB is OK.

Blown Fuse

Yes

Figure 30.

Figure 31.

SW1

Figure 29.

Figure 32.

Troubleshooting Display Problems

Branch 1

Front panel will not illuminate.

Yes

Note: T urn unit Off.

Check ribbon cable for damage; unplug and reseat ribbon cable. Use a volt meter to determine if 56VDC is present on the MPU PCB between TP 5 and TP 7.

See Figure 33.

Is 5VDC present between TP3 and TP5 on the MPU PCB?

See Figure 34.

Is 5VDC present between TP9 and TP8 on Power PCB?

See Figure 35.

Yes

Replace front control panel less MPU PCB.

Defective ribbon cable.

Branch 2

Missing segments on the front display .

Dim front display control panel.

Yes

Check to see if 56VDC is present on MPU PCB in the front control panel.

See Figure 37.

Yes

Replace front control panel less MPU PCB.

Yes

Press “POWER ON/OFF” and “CLEAR/ST ART” buttons at the same time. Do all the segments light on the front panel?

Defective Front Panel and/or Display PCB. Replace Front Control Panel less MPU PCB.

Check 5VDC supply to MPU in Branch 1. Repair or replace as needed.

Check for other control voltages on Power PCB. Are they present?

Yes

Defective Power PCB.

Figure 33.

Is fuse FU1 OK and is correct line voltage connected to Power PCB at P3? See Figure 36. Is the 16/32 V AC supply from the transformer OK?

Yes

Defective Power PCB.

Figure 34.

Figure 35.

Repair or replace as needed.

Figure 36.

Figure 37.

Troubleshooting Cosmetic Problems

Dented cover.

Yes

Replace cover .

Yes

Warped door cover .

Paint peeling from cover, or discoloration of cover.

Missing or damaged labels.

See Figures 36 - 40.

Yes

Replace as neccessary .

Check for a bad door gasket, which could let steam reach the front door , replace if necessary and replace door cover.

Yes

Replace cover.

Figure 36.-TUV 230V

Figure 37.-Delta 230V

Figure 38.-Delta 120V

3101-1

1010.1

3101-1

1010.1

Figure 39.-Siemens 230V

Figure 40.-Siemens 1 15V

Troubleshooting Printing Problems

Is there any activity from the printer?

Yes

Printer prints illegible characters.

Are bother printer and

sterilizer On?

Turn them On.

Yes

Turn sterilizer and printer off . Unplug and reseat printer cable and retry . Does unit work now?

Press printer button

Yes

on front control panel. Does display read “P

Turn sterilizer off, turn printer off, unplug and reseat printer cable from rear of sterilizer . Also, unplug and reseat printer cable on MPU PCB. Turn sterilizer and printer on, push “PRINTER ON/OFF” to enable printer and retry . Does printer work now?

ON”?

Yes

Run printer self-test.

Press printer button again. Does “P ON” appear?

Replace front control panel less MPU.

Yes

Printer is OK.

Try printing again.

Run printer self-test.

Missing letters on printout or paper will not feed.

Printer Self-T est

1. Turn Off the printer and sterilizer .

2. Unplug the printer from the sterilizer.

3. Hold down PF (Paper Feed) button on printer and turn printer switch to “ON”.

4. The printer is now in T est Mode and should start printing exclamation marks, numbers and the alphabet, in proper sequence.

5. If the printer is functioning properly, turn it to “OFF”. If not, it is defective.

6. Turn the printer back to “ON” position and reconnect it to the sterilizer, making sure that the interconnect cable is properly seated on both ends.

7. Press the “PRINTER” button on the sterilizer front panel. If the display reads “POFF”, press one more time. Display will read “P ON.”

8. Unit is now ready for use. If the printer continues to fail, check the continuity of the three wire cable from the MPU PCB, the printer jack and the interconnect cable.

9. Repair or replace as needed.

Yes

Replace the printer.

Troubleshooting SS-1

Has unit been in a cold environment?

Is continuity to RTD (Steam) Sensor OK? Repair/replace connections.

Yes

Replace RTD (Steam) Sensor . See repair procedure.

Yes

Allow unit to warm to room temperature and/or place warm water in chamber . Retest.

Troubleshooting SS-3

Unplug and remove RTD (steam) Sensor, place the S team Sensor in ice water and replug it to the Power PCB. Turn the unit on. When the temperature display reads 0o C., measure the resistance of the RTD Sensor . Is it about 1 100 OHMS at 25oC?

Replace RTD (Steam) Sensor . See repair procedure.

Yes

Replace Power PCB.

Troubleshooting Lb

Replace Front Panel MPU PCB. See repair procedure.

Troubleshooting Door

Is door closed and handle fully down?

Yes

Is door microswitch engaged?

Yes

Unplug connector P9 from Power PCB. With door closed securely and handle fully down, is continuity present between the two wires on P9?

Yes

Defective Power PCB.

Close door securely .

Adjust door microswitch. See repair procedure.

Defective or misadjusted door switch or defective cable. Repair or replace as needed.

Troubleshooting SS-2

Is surface connector P8 plugged into the Power PCB properly?

See Figure 8.

Yes

Unplug connector P8 from the Power PCB. With the unit at about room temperature, is there continuity between the two wires on connector P8?

Yes

Replace Power PCB. See repair procedure.

Repair connections.

Replace Surface Sensor. See repair procedure.

Figure 8.

Troubleshooting U-1

Check input voltage to the transformer at P3 on Power PCB, blue wire to brown wire. It should be 1 15V AC or 230V AC, depending on unit specifications. See Figure 41.

Yes

Check output voltage from transformer at P7 on the Power PCB, red wire to red wire approximately 32V AC and yellow wire to either red wire approximately 16VAC. See Figure 42.

Yes

Replace Power PCB. See repair section.

Blue

Green

Brown

Check voltage to the unit. Also, check the switch on the back of the unit be sure it is in the “ON” position.

Replace Transformer . See repair section.

Y ellow

Red

Yellow

Red

Figure 41.

Figure 42.

Troubleshooting S1

Is resistance of Fill V ent Solenoid approximately 16 OHMS? See Figure 43.

Yes

Are connections to Fill/Vent Solenoid OK?

Yes

Is Ribbon Cable OK? Check for broken wires or loose connections.

Yes

Recheck all cables. If cables are ok, replace MPU PCB.

Replace Fill/V ent Solenoid. See repair procedure.

Repair/replace connections.

Replace Ribbon Cable.

Figure 43.

Troubleshooting S2

Is Dump Solenoid coil resistance approximately 16 OHMS? See Figure 44.

Yes

Are Dump Solenoid connections OK?

Yes

Is Ribbon Cable OK? Check for broken wires or loose connections.

Yes

Recheck all cables, If cables are OK, replace MPU board.

Replace Dump Solenoid. See repair procedure.

Repair/replace connections.

Replace Ribbon Cable.

Figure 44.

Troubleshooting S3

Is Bellows Solenoid coil resistance approximately 16 OHMS?

See Figure 45.

Yes

Are Bellows Solenoid connections OK?

Yes

Is Ribbon Cable OK? Check for broken wires or loose connections.

Yes

Recheck all cables, If cables are OK, replace MPU board.

Replace Bellows Solenoid. See repair procedure.

Repair /replace connections.

Replace Ribbon Cable.

Figure 45.

SALES REPRESENTATIVES

Customer Service (8 A.M. – 6 P.M. EST) .................................................................... 1-800-659-6560

Customer Service Fax Orders ................................................................................ 1-800-659-7255

Technical Support (8 A.M. – 6 P.M. EST) ................................................................... 1-800-659-5922

Technical Support Fax ........................................................................................... 1-704-659-7255

Purchase Information

Write in the model and serial number below for the dental chair .

General Ordering InformationGeneral Ordering Information

General Ordering Information

General Ordering InformationGeneral Ordering Information

Notes

MODEL:____________________________ SERIAL NUMBER: ___________________

DEALER NAME AND ADDRESS:

____________________________ ____________________________ ____________________________ ____________________________ ____________________________

DA TE PURCHASED: __________________ DA TE INSTALLED:____________________

Notes

Pelton & Crane PO Box 7800 Charlotte, NC 28241-7800 USA

Part No. 042280 Rev. 0, 03/05

Printed in USA

Pelton Crane Delta XL Service guide

Specifications and Main Features

Frequently Asked Questions

User Manual