A-dec 200 User manual
A-dec 200™ Service Guide
A-DEC 200 SERVICE GUIDE
Copyright
Intended Application and Use
© 2011 A-dec Inc. All rights reserved.
A-dec Inc. makes no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of merchantability
and fitness for a particular purpose. A-dec Inc. shall not be held liable
for any errors contained herein or any consequential or other damages
concerning the furnishing, performance or use of this material. The
information in this document is subject to change without notice. If you
find any problems in the documentation, please report them to us in
writing. A-dec Inc. does not warrant that this document is error-free.
No part of this document may be copied, reproduced, altered, or
transmitted in any form or by any means, electronic or mechanical,
including photocopying, recording, or by any information storage and
retrieval system, without prior written permission from A-dec Inc.
Trademarks and Additional Intellectual Property Rights
A-dec, the A-dec logo, A-dec 500, A-dec 300, Cascade, Cascade Master
Series, Century Plus, Continental, Decade, ICX, ICV, Performer,
Preference, Preference Collection, Preference ICC, and Radius are
trademarks of A-dec Inc. and are registered in the U.S. and other
countries. A-dec 200, Preference Slimline, and reliablecreativesolutions
are also trademarks of A-dec Inc. None of the trademarks or trade
names in this document may be reproduced, copied, or manipulated in
any manner without the express, written approval of the trademark
owner.
Certain touchpad symbols are proprietary to A-dec Inc. Any use of
these symbols, in whole or in part, without the express written consent
of A-dec Inc. is strictly prohibited.
This equipment/system is intended for diagnostic and therapeutic
treatment of dental patients by licensed health care professionals.
A dental operative unit (with or without accessories) is an AC-powered
device intended to supply power to and serve as a base for other dental
devices, such as a dental handpiece, a dental operating light, an air or
water syringe unit, an oral cavity evacuator, a suction operative unit,
and other dental devices and accessories.
Comments and Feedback
If you have any feedback or comments about this document, contact:
A-dec Inc.
Technical Communications Department
2601 Crestview Drive
Newberg OR 97132 USA
USA/Canada: 1.800.547.1883
Worldwide: 1.503.538.7478
E-mail: techcomm@a-dec.com
Website: www.a-dec.com
Regulatory Information
Regulatory information is provided with A-dec equipment as
mandated by agency requirements. This information is delivered in the
equipment’s Instructions for Use or the separate Regulatory Information
and Specifications document. If you need this information, please go to
the Document Library at www.a-dec.com
.
Product Service
For service information, contact your local authorized A-dec dealer. To
find your local dealer, go to www.a-dec.com
.
CONTENTS
1 INTRODUCTION ...............................................1
Get Support ............................................................1
International Customer Service .........................................1
Inside this Guide ...................................................... 1
A-dec 200 System ..................................................... 2
Serial and Model Numbers........................................... 3
Service Tools ........................................................... 4
2 DENTAL CHAIR ................................................7
Product Overview ..................................................... 8
Chair Load Capacity.......................................................8
Power and Status .........................................................8
Limit Switch and Chair Lockout .........................................8
Circuit Board Components ...............................................9
Service, Maintenance, and Adjustments ....................... 10
Factory Default Routine ................................................ 10
Potentiometers .......................................................... 11
Adjust the Base Up Limit Switch: ........................................ 11
Adjust the Base Positioning Potentiometer ............................ 12
Adjust the Back Potentiometer ..........................................12
Hydraulic System ........................................................ 13
Solenoids.................................................................. 14
Test the Solenoid ........................................................... 14
Remove and Replace the Solenoid ....................................... 14
Test the Motor Pump.................................................... 15
Headrest Adjustments .................................................. 16
Chair Speed Adjustments .............................................. 16
Illustrated Parts Breakdown....................................... 17
Part Identification....................................................... 17
Chair Covers.............................................................. 17
Upper Chair Assembly .................................................. 18
Mid Chair Assembly ..................................................... 20
Lower Chair Assembly...................................................22
Headrest Assembly ...................................................... 23
Motor Pump and Capacitor Assembly ................................. 24
Hydraulic Manifold Assembly ..........................................26
Hydraulic Tank Assembly ...............................................27
Base Limit Switch Assembly............................................ 27
Back Potentiometer Assembly .........................................28
Base Position Potentiometer Assembly ...............................29
3 PROGRAMMING ..............................................31
Touchpad Options ................................................... 32
Chair Positions ........................................................... 32
X-Ray/Rinse Button......................................................32
Dental Light ..............................................................33
Auto On/Off ................................................................. 33
Cuspidor Cupfill and Bowl Rinse....................................... 34
Standard Cuspidor (no touchpad) ....................................... 34
Cuspidor with Optional Touchpad ....................................... 34
Customize Cupfill and Bowl Rinse Functions .......................... 34
4 DELIVERY SYSTEM .......................................... 35
Product Overview ................................................... 35
A-dec Tubing.............................................................. 36
Service, Maintenance, and Adjustments ....................... 37
Flexarm Adjustments ...................................................37
Instrument Holder Adjustments .......................................38
Handle ....................................................................... 38
Control Block .............................................................39
Remove the Control Block ................................................ 39
Handpiece Control Adjustments.......................................40
Adjust the Water Coolant ................................................. 40
Adjust the Air Coolant .................................................... 40
Adjust the Drive Air Pressure ............................................. 41
Oil Collector ..............................................................41
86.0016.00 Rev A iii
A-dec 200 Service Guide
Handpiece Tubing Replacement....................................... 42
Adjust Tubing Length ...................................................... 42
Quad Voltage Intraoral Light Source (QVIOLS)...................... 43
Intraoral Light Source Adjustments ..................................... 44
Intraoral Light Source Length and Voltage .......................... 45
Illustrated Parts Breakdown ...................................... 47
Part Identification....................................................... 47
A-dec 200 Delivery System............................................. 48
Holder Assembly......................................................... 50
Control Block Assembly ................................................ 52
Toggles Assemblies (Flush Toggle and Master On/Off Toggle) .... 53
Oil Collector ............................................................. 54
5 CUSPIDOR AND SUPPORT CENTER ....................... 55
Product Overview................................................... 55
Service, Maintenance, and Adjustments ....................... 56
Bowl Rinse Flow Adjustment .......................................... 56
Adjusting the Cuspidor Cupfill and Bowl Rinse ........................56
Self-Contained Water System ......................................... 56
Illustrated Parts Breakdown ...................................... 57
Part Identification....................................................... 57
A-dec 200 Support Center ............................................. 58
A-dec 200 Cuspidor ..................................................... 60
Self-Contained Water Bottle .......................................... 61
Cupfill/Bowl Rinse Manifold ........................................... 62
6 ASSISTANT’S INSTRUMENTATION ........................ 63
Product Overview................................................... 63
Service, Maintenance, and Adjustments ....................... 64
Auto-air Holder .......................................................... 64
Positioning Assistant’s Holder ......................................... 64
Assistant’s Touchpad Connections .................................... 65
Vacuum Instrumentation ............................................... 65
Solids Collector .......................................................... 66
Illustrated Parts Breakdown ...................................... 67
Part Identification....................................................... 67
Telescoping Assistant’s Arm............................................ 68
Assistant’s Touchpad Assembly ........................................ 69
Assistant’s Auto-Air Holder............................................. 70
Assistant’s Standard Holder............................................ 72
7 UTILITIES .....................................................73
Product Overview................................................... 74
Shutoff Valves ............................................................ 74
Gauge and Pre-Regulator ................................................. 74
Service, Maintenance, and Adjustments ....................... 75
Air and Water Filter Replacement .................................... 75
Illustrated Parts Breakdown ...................................... 77
Part Identification....................................................... 77
Air Filter/Regulator Assembly ......................................... 78
Water Filter/Regulator Body Assembly............................... 79
8 DENTAL LIGHT...............................................81
Product Overview................................................... 82
Dental Light Specifications ............................................ 82
Nominal Light Intensity ................................................... 82
On/Off Button .............................................................. 82
Auto On/Off Feature ...................................................... 82
Service, Maintenance, and Adjustments ....................... 83
Circuit Breaker Location ............................................... 83
Intensity Switches ....................................................... 83
Dental Light Wire Connections on the 200 Dental Chair .......... 84
Dental Light Relay Circuit Board ...................................... 86
LED Identification .......................................................... 86
iv 86.0016.00 Rev A
Flexarm Adjustments ................................................... 87
Rotation Adjustments................................................... 87
Diagonal Adjustment ....................................................... 87
Vertical Adjustment ........................................................87
Bulb Replacement ....................................................... 88
Illustrated Parts Breakdown....................................... 89
200 Dental Light ........................................................ 89
9 TROUBLESHOOTING ........................................ 91
Dental Chair .......................................................... 91
Delivery System ..................................................... 98
Holders ...............................................................102
Utility Area ..........................................................102
Cuspidor..............................................................103
Dental Lights ........................................................107
Table of Contents
10 TUBING AND FLOW DIAGRAMS .........................109
A-dec Tubing ........................................................109
Antimicrobial AlphaSan and Color Tracer Markings ...............109
Chair Flow Diagram ................................................112
Delivery System Flow Diagram ..................................113
Assistant’s and Support Center Flow Diagram................114
Utilities Flow Diagram.............................................115
86.0016.00 Rev A v
A-dec 200 Service Guide
vi 86.0016.00 Rev A
INTRODUCTION
1
The A-dec 200 Service Guide provides service information for the A-dec
200 dental system, including the chair, programming, delivery system,
cuspidor and support center, assistant’s instrumentation, utilities, and
dental light. Users of this guide should understand basic operation and
maintenance of dental and medical equipment, and use of flow diagrams.
CAUTION Possible injury or equipment damage. Service to be
performed by trained personnel only.
Get Support
For questions not addressed in this document, contact A-dec Customer
Service using contact information for your region.
International Customer Service
2601 Crestview Drive
Newberg, Oregon 97132
Telephone: 1 (503) 538-9471 or 1 (503) 538-7478
Fax: (503) 538-5911
Internet: www.a-dec.com
Inside this Guide
The following regulatory symbols may appear throughout the document.
NOTE Notes indicate additional information, and when it is
important that instructions are followed.
TIP Tips indicate tips or tricks to make installation, use, or
maintenance easier.
WARNING Warning indicates potential severe injury or death if
instructions are not followed properly.
CAUTION Caution indicates when failure to follow instructions
could result in damage to product or minor injury.
DANGER Danger indicates warnings of dangerous voltage and of
certain electrical shock.
BIOHAZARD Biohazard indicates potential infection if
instructions are not properly followed.
This guide contains service, maintenance and adjustments; flow diagrams;
exploded parts breakdown of assemblies; and troubleshooting.
IMPORTANT Important indicates areas in which to refer to or use
specific instructions.
86.0016.00 Rev A 1
A-dec 200 Service Guide
Cuspidor
(page 55)
Dental Chair
(page 7)
Assistant’s
Instrumentation
(page 63)
Foot Control
Footswitch
Solids Collector
(page 66)
Utilities
(page 73)
Support Center
(page 55)
Delivery System
(page 35)
Dental Light
(page 81)
Touchpad
(page 31)
Serial Number
Location
A-dec 200 System
A-dec 200 system comes configured as shown below:
Figure 1. A-dec 200 Systems
2 86.0016.00 Rev A
Serial and Model Numbers
1
2
Introduction
Product serial and model number information can be found on the serial/
model number labels. When you contact customer service, the serial
number helps identify the product and when it was manufactured.
Use Table 1 and Figure 2 to reference how to identify serial/model number
information.
Table 1. M o nt h I d e n t i fi c a t i o n Ta b le
Letter Month Letter Month
A January G July
B February H August
C March I September
DApril JOctober
E May K November
FJune LDecember
Figure 2. Serial Number Label Example
200
(1) The REF number is the model number. (2) The first letter of the serial number
indicates the month the product was manufactured. The first digit of the serial
number is the year of manufacture (for example, L8 = December 2008).
86.0016.00 Rev A 3
A-dec 200 Service Guide
Service Tools
This table lists the types of tools available from A-dec for servicing A-dec 200 equipment and their recommended use:
Table 2. Recommended Tools
Tool Tas k Part Illustration Part Number
Drive air pressure gauge Adjusting handpiece drive air pressure, 0-60 psi (4.13 bar)
This gauge does not fit the Borden 3-hole coupler
50.0271.00
Hemostat • Troubleshooting or repairing a unit
• Stopping air or water flow through tubing
Hex key set Servicing or installing A-dec equipment (plastic case included) 009.018.00
®
Loctite
O-ring tools Replacing O-rings during quick field repairs (fits the four
Panel mount gauge • Checking air/water pressure
Installing threaded fasteners to prevent loosening 060.001.00 (Red 271)
smallest O-ring sizes)
• Checking inline pressure gauge for testing purposes
009.008.00
060.002.00 (Blue 242)
009.013.00
026.118.00
4 86.0016.00 Rev A
Table 2. Recommended Tools (continued)
CAUTION Use only A-dec Silicone lubricant or
the O-rings may be damaged.
Tool Tas k Part Illustra tion Part Nu mber
A-dec Silicone lubricant Lubricating internal moving parts such as O-rings, oral
evacuator valves, and bushings
Sleeve tool Aiding in securing 1/4" tubing sleeves and 1/8" uni-clamps 98.0072.00
98.0090.01
Introduction
Snap ring tool Installing and removing internal and external snap rings (fits
all snap rings used in A-dec equipment)
Tubing stripper Separating the extruded air and water lines in vinyl tubing 009.035.00
Umbilical stringer Routing additional tubing or wiring through existing umbilical
assemblies (12’ [3.66 meter] stringer with threading holes on
both ends)
Valve test syringe Testing of pilot operated valves; used to apply a static
pressure of 5-75 psi (.34-5.17 bar)
009.007.00
009.015.00
98.0050.01
86.0016.00 Rev A 5
A-dec 200 Service Guide
6 86.0016.00 Rev A
DENTAL CHAIR
2
This section provides detailed information related to service, maintenance,
and adjustment of the A-dec 200 dental chair.
Contents
• Product Overview, page 8
• Service, Maintenance, and Adjustments, page 10
• Illustrated Parts Breakdown, page 17
Figure 3. A-dec 200 Chair
86.0016.00 Rev A 7
A-dec 200 Service Guide
Master Toggle
(Power On/Off)
Status Light
Chair Lift Arm
Chair Stop
Plate
Status
Light
Assistant’s
Arm
Product Overview
Chair Load Capacity
Maximum Chair Capacity:
• Patient Load 136 kg (300 lbs.)
• Module/Accessory Loads (maximum off-center) with A-dec 200 system:
68 kg (150 lbs.) @ 406 mm (16")
Power and Status
The chair and system is controlled by the master toggle on the delivery
system. The power should always be turned off for service. When the Adec logo on the touchpad or the status light on the chair lift arm are
illuminated, the system is on and ready for use. If the status light blinks,
the limit switch has been activated.
Figure 4. Power and Status
Limit Switch and Chair Lockout
If anything becomes lodged under the chair lift arm or assistant’s arm, a
limit switch stops the downward motion of the chair. Pressing the chair
stop plate or lifting up on the assistant’s arm activates the limit switches.
Use the footswitch or touchpad to raise the chair, then remove the object.
The optional lockout kit inhibits the operation of the dental chair when a
handpiece is removed from its holder and the foot control pressed. When
this happens, the chair status light blinks quickly. To resume, replace the
handpiece and use the footswitch or touchpad to raise the chair.
Figure 5. Chair Lockout Overview
8 86.0016.00 Rev A
Circuit Board Components
Table 3. LED Identification Figure 6. Chair Circuit Board Components
LED Status Description
DS16 - AC power
LED
DS15 - Status LED Off System is not functioning, no power or
DS17 - Data LED Off No DCS communication, not connected
DS6 Stop plate
limit switch
DS4 - Chair
lockout
DS3 and DS5 -
Chair
potentiometers
DS7, DS13,
DS12, DS14
Chair relay LEDs
DS8 Capacitor switch
DS9 Back up limit switch
DS10 Base up limit switch
DS11 off = relay is off; on = relay is on
DS1, DS2 Position 3 function selection
Off No 24 VAC power, tripped circuit
breaker, power supply turned off, no
line voltage
Green, steady 24VAC at the terminal strip
circuit board has failed
Green, steady Normal operation
to the DCS, or DCS has failed
Green, steady Detects active DCS
Green, blinking Valid DCS Message
Off Closed, (normal)
Red Open, (activated)
Off Open, (normal)
Red Closed, (activated)
Off Potentiometer:
Not connected or bad connection
Moving in wrong direction
Limited range of motion, or
Cable is not on wheel
Yello w, steady Normal operation
Yello w, fast blink Upper end of travel
Off Relay is off
-
On Relay is on
Dental Chair
86.0016.00 Rev A 9
A-dec 200 Service Guide
Service, Maintenance, and Adjustments
Contents
• Potentiometers, page 11
• Hydraulic System, page 13
• Solenoids, page 14
• Test the Motor Pump, page 15
• Headrest Adjustments, page 16
• Chair Speed Adjustments, page 16
Factory Default Routine
When a new circuit board is installed in the chair, factory default routine
needs to be run to learn the range of motion of the chair. The routine:
• Sets the base and back upper limits
• Calculates new presets based on actual range of motion of the chair
• Verifies that the potentiometers work
To start the factory default routine, place the “spare” jumper in the factory
default position on the P17 test points of the chair circuit board (see "Circuit
Board Components" on page 9 for reference).
When running the factory default routine the chair:
1. Moves base down
2. Moves base up
3. Moves back down
4. Moves back up
5. Moves base and back to Position 0
6. Beeps three times
NOTE The jumper must remain in the factory default
position to complete the factory default routine. The status
LEDs on the standard and deluxe touchpads and the chair
circuit board double blink while the factory default routine
is running and after the routine is complete.
10 86.0016.00 Rev A
Potentiometers
Actuator Pin
Switch Arm
Limit Switch
Mounting
Bracket
Clamping
Screws
25"
63.5 cm
Potentiometers provide the controller with current position values for the
chair base and back. The controller saves the chair values when
programmed and compares the values with current position values for the
pre-position and auto-return functions.
Adjust the Base Up Limit Switch:
1. Remove the motor pump cover.
2. Loosen the two screws clamping the limit switch to the mounting
bracket.
Figure 7. Mounting Bracket
Dental Chair
Figure 8. Chair Position
4. Push the limit switch against the actuator on the drive gear until the
switch opens (clicks), then tighten the clamping screws. (See Figure 7).
5. Position the chair base down until the limit switch has closed, then
position the chair full base up. Check the distance between the top of
the base plate to the flat area around the threaded stud the chair adapter
mounts to. If the distance is incorrect, repeat steps 2 through 4.
3. Position the chair as shown in Figure 8.
86.0016.00 Rev A 11
A-dec 200 Service Guide
Potentiometer
Gear
Positioning
Potentiometer
Limit Switch
Mounting
Screw
Large Drive
Gear
Limit Switch
Mounting Screws
Bracket Mounting
Screws
Switch Arm
Drive Shaft
Urethane Tubing
3/8" OD
Potentiometer
Shaft
Tip
Potentiometer
Shaft
Clockwise
Counterclockwise
Adjust the Base Positioning Potentiometer
1. Remove the motor pump cover and position the chair base down.
2. Use a 3/16" hex key to remove the limit switch and mounting screw. See
Figure 9.
3. Turn the potentiometer gear counterclockwise until it stops.
4. Align the potentiometer assembly, then turn the potentiometer gear
clockwise two teeth.
5. Reinstall the limit switch and potentiometer assembly. Make sure the
potentiometer gear does not turn and the two gears mesh properly.
6. Ensure that the electrical connections to the limit switch and positioning
potentiometer are property set.
7. While observing the two gears for binding, lower the chair base.
CAUTION Do not raise to the full base up position until after you
have checked the base up limit switch for proper adjustment. the
chair may go into hydraulic lock if not adjusted properly.
8. Reinstall the cover, and program the auto-positioning functions.
Figure 9. Base Potentiometer
Adjust the Back Potentiometer
1. Position the chair back to its full up position.
2. Disconnect the limit switch wiring harness from the limit switch.
3. Remove the limit switch mounting screws and limit switch from the
bracket. Do not bend the switch arm.
4. Remove the bracket mounting screws.
5. Remove the drive shaft from the potentiometer shaft.
6. Remove the drive shaft from the chair by moving it toward the chair
backrest, and slightly to the side to dislodge it from the holder.
Figure 10. Remove Drive Shaft
12 86.0016.00 Rev A
7. Turn the potentiometer shaft clockwise until it no longer turns, then
turn the shaft counterclockwise 1/8" of a turn
Figure 11. Adjust Back Potentiometer
8. Reinstall the shaft.
Hydraulic System
Hydraulic Cylinders
Hydraulic Fluid Reservoir
Solenoid/Manifold
Assembly
Motor Pump
The hydraulic system consists of:
• Hydraulic fluid reservoir
The fluid level in the reservoir can be seen through the sides of the
reservoir and is serviced via a top fill cap.
•Hydraulic cylinders
The hydraulic cylinders control the base lift and back functions. Springs
and gravity retract the rod during base and back down functions.
• Motor-driven hydraulic pump
The hydraulic pump and the starter capacitor supply hydraulic fluid
from the reservoir, under pressure, to the chair lift and tilt hydraulic
cylinders for back up and base up functions.
• Solenoid/manifold assembly
This assembly gates hydraulic fluid to and from the two cylinders.
Depending on the chair function called for, the controller selects which
solenoid-actuated manifold valves are opened or closed. The solenoid/
manifold assembly also includes four adjustable needle valves used to
restrict or divert the flow of hydraulic fluid to and from the lift and tilt
cylinders. These valves provide the rate of travel adjustment for chair
base and back movement.
Dental Chair
Figure 12. Hydraulic System
86.0016.00 Rev A 13
NOTE If cable ties are present in the product and you need to
remove them for servicing, make sure to replace the ties after
service is completed.
A-dec 200 Service Guide
Hydraulic
Manifold
O-ring
Poppet
Poppet
Sleeve
Washer
Solenoid
ID Washer (Solenoid
Specifications)
P10
Solenoids
Tes t th e Sol eno i d
To test the magnetic pull of the solenoid hold the tip of screwdriver near a
solenoid and activate the appropriate chair function. You should feel the
tug of the magnetic field generated around the solenoid.
Figure 13. Test the Solenoid
Remove and Replace the Solenoid
1. Lower the chair base and back to the full down position. Remove the
motor pump cover, then unplug the chair.
WARNING The solenoid coils are powered by line voltage (100,
120, or 240 V). Failure to unplug the chair may result in serious
injury from electrical shock.
4. Using a flat-tipped screwdriver, loosen and then remove the sleeve and
poppet from the manifold assembly.
WARNING To prevent the possibility of over-heating and failure,
replace the entire solenoid assembly.
5. Remove the o-ring from inside the manifold, and install a new o-ring.
6. Install a new sleeve and poppet; tighten the poppet sleeve using a flat-
tipped screwdriver.
7. Install a new coil on the plunger. Do not overtighten the retaining nut.
8. Strip approximately 1/4" of insulation from the wires cut in step 2, and
install a crimp-on butt-type connector on each wire.
9. On the new solenoid, cut the wiring to length allowing enough to reach
the crimped-on connectors. Strip approximately 1/4" of insulation from
the wires and crimp each wire into a connector.
Figure 14. Remove and Replace Solenoid
2. Using a pair of wire cutters, cut the wiring to the faulty solenoid at
3. Using a 9/16" wrench, remove the solenoid retaining nut and slide the
14 86.0016.00 Rev A
about mid point between the solenoid and connector P10.
coil off the poppet sleeve.
CAUTION Use caution when removing and replacing the coil. The
poppet sleeve is easily bent. Even slight bending of the sleeve will
result in the malfunction of the solenoid valve.
Tes t t he Mot or Pu mp
Red Wire
White Wire
Motor Pump
This test requires the use of a current pickup probe.
• Clip the probe onto the red wire going to the motor pump.
• Use the footswitch or touchpad to raise the chair.
You should read 5 Amps (maximum) of current for 120 V motor pump, or
2.5 Amps (maximum) of current for 240 V motor pump.
Figure 15. Test Motor Pump
Dental Chair
86.0016.00 Rev A 15
A-dec 200 Service Guide
Glide Bar
Locking
Knob
Adjust chair
base speed.
Adjust chair
back speed.
Headrest Adjustments
Turn the locking knob clockwise to lock it into the desired position. Slide
the headrest and glide bar up or down to adjust the height.
WARNING When the glidebar has reached its maximum
recommended working height, a warning will be visible on the
patient’s side of the glide bar. Do not use the headrest in a position
where this warning is visible.
Figure 16. Headrest Adjustments
Chair Speed Adjustments
The speed for moving the chair seat and back can be adjusted. Use a 3/32"
hex key to adjust the chair base speed and back speed on the manifold (see
Figure 17. Adjust Manifold for Chair Speed
NOTE If cable ties are present in the product and you need to
remove them for servicing, make sure to replace the ties after
service is completed.
16 86.0016.00 Rev A
Illustrated Parts Breakdown
3
1
5
4
2
Dental Chair
Part Identification
In this section, you will find serviceable components tables that correspond
to the illustrations. The tables identify all parts and kits, including those
that are not for sale. Parts that are not for sale are indicated with the symbol
shown below:
Chair Covers
Figure 18. A-dec 200 Dental Chair
†— Indicates that the individual part is not available for sale. These parts
are typically part of a kit and/or larger assembly that is for sale.
Contents
• Chair Covers, page 17
• Upper Chair Assembly, page 18
• Mid Chair Assembly, page 20
• Lower Chair Assembly, page 22
• Headrest Assembly, page 23
• Motor Pump and Capacitor Assembly, page 24
• Hydraulic Manifold Assembly, page 26
• Hydraulic Tank Assembly, page 27
• Base Limit Switch Assembly, page 27
• Back Potentiometer Assembly, page 28
• Base Position Potentiometer Assembly, page 29
Item Part Number Description
1 61.3821.00 Rear chair cover
2 61.3847.00 Bottom cover
3 61.3846.00 Utility cover
86.0016.00 Rev A 17
4 61.2239.01 Lift arm cover
5 61.2242.00 Umbilical routing bracket
A-dec 200 Service Guide
Upper Chair Assembly
Item Part Number Description
1 — Double articulating headrest assembly (see page 23)
2 61.3824.00 Backrest cover
3 61.3791.00 Armrest release button
4 013.052.00 Compression spring, .843 OD X 1.375 FL
5 61.1245.02 † Arm support, LH
6 004.157.00 Wave spring washer, .990 OD stainless steel
7 004.126.00 Flat washer
8 61.3827.00 Armrest cover
9 61.3790.01 Armrest pivot plate, LH
10 005.123.01 Button head socket screw, 10-32 X 5/8"
11 61.3108.00 Flanged bearing
12 001.164.00 Socket shoulder screw, 1/2-13 X 5/8 X 5/8
13 61.3788.01 Pivot bolt cover
14 61.2740.00 Backrest link pin
15 016.131.00 Flanged bearing
16 007.069.00 Set screw, socket 1/4-20 X 1/4
17 61.3792.00 Back link
18 61.3789.01 Armrest pivot plate, RH
19 005.147.00 Flat head socket screw, 1/4-20 X 1-1/4
20 006.122.01 Retainer nut, 10-32 zinc
21 61.2743.00 Brake shoe
22 61.1247.02 † Arm support, RH
23 001.268.00 Socket screw, 1/4-20 X 3/30 mm stainless steel
24 002.136.00 Flat head socket screw, 1/4-20 X 1/38
† Indicates that the individual part is not available for sale
18 86.0016.00 Rev A
Figure 19. Upper Chair Assembly
2
1
Headrest Assembly
(see page 23)
6
5
4
3
10
11
12
13
16
14
15
17
18
22
23
19
20
21
8
9
7
8
20
21
24
Dental Chair
86.0016.00 Rev A 19
A-dec 200 Service Guide
Mid Chair Assembly
Item Part Number Description Item Part Number Description
1 61.1309.00 Tilt slide block 21 35.1749.00 Chair mount adaptor
2 61.1311.00 Tilt cylinder clevis rod 22 004.171.00 Thrust washer
3 61.1267.00 Tilt cylinder assembly 23 006.124.00 5/8-18 UNF-2B ESNA 4N zinc
4 010.031.00 E-clip 24 025.072.00 Cable tie mounting block
5 61.2076.00 Roller arm link 25 005.143.00 Button head socket screw, 1/4-20 X 3/8"
6 61.2078.00 Toeboard axle 26 61.1294.00 † Lower structure link
7 61.2293.00 Linkarm roller 27 41.1145.00 Umbilical support
8 005.008.01 Socket head screw, 1/4-20 X 1/2" 28 41.1143.00 Umbilical restraint
9 025.044.00 Clamp 29 61.2095.00 † Lift arm
10 61.1308.00 Channel guide 30 004.149.00 Flat neoprene washer, .680 ID
11 013.054.00 Spring 31 004.104.00 Flat steel plated washer, .640 ID
12 002.134.00 Socket head screw, 1/4-20 X 1/4" 32 — Lift cylinder
13 61.1221.00 Base limit switch assembly 33 61.1285.00 Lift pin
14 61.1224.00 Back position potentiometer assembly 34 011.046.00 Clip pin
15 002.023.00 Head screw, 3/8-16 X 1-1/4 35 41.1144.00 Umbilical retainer
16 61.1314.00 Wear pad 36 001.165.00 Socket head shoulder screw
17 002.120.00 Socket head patch screw, 1/4-20 X 1" stainless steel 37 001.164.00 Socket head shoulder bolt
18 004.148.00 Flat nylatron washer, .630 ID 38 61.3825.00 † Swivel bracket
19 — Seat armature 39 61.3826.00 † Upper structure, gray 3
20 61.1270.00 Stud
† Indicates that the individual part is not available for sale
20 86.0016.00 Rev A
Figure 20. Mid Chair Assembly
2
3
4
Lower Chair
(see page 22)
1
5
4
4
6
7
7
5
4
8
9
10
11
13 Base Limit Switch
(see page 27)
12
15
16
4
4
17
18
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
18
18
18
18
37
26
38
39
14 Back Potentiometer
(See page 28)
19
Dental Chair
86.0016.00 Rev A 21
A-dec 200 Service Guide
Motor Pump Assembly (see page 24)
1
2
1
2
34
5
6
7
8
9
10
11
12
13
14
Upper Chair Assembly
(see page 18)
Mid Chair Assembly
(see page 20)
Lower Chair Assembly
Item Part Number Description
1 010.031.01 E-clip
2 61.1285.00 Pivot pin
3 001.163.00 Hex head cap screw, 1/2-13 X 1-1/4
4 004.148.00 Flat nylatron washer, .630 ID
5 001.165.00 Socket head shoulder screw
6 005.008.01 Socket head screw, 1/4-20 X 1/2
7 61.1277.01 † Sub base
8 61.3848.00 Floorbox/pump cover
9 61.1650.00 Foot switch/foot control bracket
10 61.2037.01 Baseplate
11 61.1286.00 Bracket
12 005.143.00 Button head socket screw, 1/4-20 X 3/8
13 61.1221.00 Base position potentiometer assembly
14 61.1295.00 Gear
Figure 21.
Lower Chair Assembly
† Indicates that the individual part is not available for sale
22 86.0016.00 Rev A
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