311, 411, 511 Dental Chair Service Guide 2015

A-dec 311, 411, and 511 Dental Chairs Service Guide 

311 (B) and 411 Chairs Service, Adjustments, and Maintenance ... 28 Chair Covers ...28 Upholstery [311 (B) and 411]...29 Back Upholstery Removal/Attachment...29 Headrest Upholstery Removal/Attachment...29 Seat Upholstery Removal/Attachment...29 Chair Drive System [311 (B) and 411]...30 Hydraulic System [311 (B) and 411]... 31 Hydraulic Fluid Reservoir Replenishment [311 (B) and 411]... 31 Factory Default Routine [311 (A and B) and 411]...32 Capacitor Replacement [311 (B)/411]...33 Chair Input Voltages...33 Motor Driven Electro-Mechanical Actuator [311 (B) and 411]...34 Position Sensor [311 (A and B)/411]...35 Factory Default Routine...35 Limp Along Feature...35 Solenoid [311 (B) and 411]...36 Solenoid Testing...36 Magnetic Pull Test for Coil Resistance...36 Volt/Ohm Meter Test for Coil Resistance...36 Solenoid Assembly Replacement [311 (B) and 411]... 37 Chair Stop Plate [311 (B) and 411]...38 Stop Switch...38 Chair Bump-Up Feature [311 (B) and 411]...38 Dual-Articulating Headrest [311 (A)/311 (B)/411]...39 Headrest Adjustment...39 Glide Bar Tension Adjustment...39 Armrest Adjustments [311 (B) and 411]...40 Two-Position Armrests Adjustment...40 Arm Rest Rotation Tension Adjustment...40 Swivel Brake Adjustment [311 (B) and 411]... 41 Swivel Brake... 41 Swivel Brake Tension Adjustment... 41

511 Chair Service, Adjustments, and Maintenance ... 42 Chair Covers (511)...42 Upholstery (511)... 43 Back Upholstery Removal/Attachment...43 Headrest Upholstery Removal/Attachment...43 Seat Upholstery Removal/Attachment...43

Contents  2

Factory Default Routine (511)...44 Chair Drive System (511)...45 Hydraulic Cylinders ...45 Motor Driven Hydraulic Pump ...45 Hydraulic System (511)...46 Hydraulic Fluid Reservoir Replenishment (511)...46 Capacitor (511)... 47 Solenoid (511)...48 Solenoid Testing ...48 Magnetic Pull Test for Coil Resistance...48 Volt/Ohm Meter Test for Coil Resistance...48 Solenoid Assembly Replacement (511)...49 Position Sensors (511)... 50 Chair Stop Plate (511)... 51 Stop Switch... 51 Chair Bump-Up Feature (511)... 51 Headrest Adjustment (511)...52 Swivel Brake Adjustment (511)...53 Swivel Brake Operation...53 Swivel Brake Tension Adjustment...53

Chair Programming... 54 Overview... 54 Chair Positioning...55 Chair Direction Buttons...55 Programmable Chair Buttons/Factory Presets...55 Customize the X-Ray/Rinse Button...55

Troubleshooting... 56 Overview...56 A-dec 311 (A and B) and 411 Dental Chairs Troubleshooting...56 A-dec 511 Dental Chairs Troubleshooting...59 Chair Circuit Board Diagnostics...63

Overview Copyright and Regulatory Information Copyright

Product Service For product service information, please contact your local authorized A-dec dealer. To find your local dealer, visit www.a-dec.com.

© 2015 A-dec Inc. All rights reserved.

Regulatory Information

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.

Warranty information is provided in the Regulatory Information, Specifications, and Warranty document (p/n 86.0221.00), which is available in the Document Library at www.a-dec.com. This document includes:

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.

• Serial number identification • Software revisions • Deluxe touchpad help messages • Intended application and use statements • Identification of symbols • Environmental specifications

Trademarks and Additional Intellectual Property Rights

• Classification of equipment

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 United States and other countries. A-dec 400, A-dec 200, Inspire, 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.

• Electrical rating and electromagnetic information

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.

86.0380.00 Rev B

• Chair load capacity

Product Models and Versions Covered in This Document A-dec uses product versions to indicate significant changes to a product model. Modifications identified by a change to the product version include, but are not limited to, significant changes to features and options, and product compatibility. Models

Versions

Description

311

A, B

Dental Chairs

411

A

Dental Chairs

511

A

Dental Chairs Overview  3

A-dec 311, 411, and 511 Dental Chairs Service Guide 

Overview  4

Customer Service Information

Other Sources of Information

For questions not addressed in this document, contact A-dec Customer Service using contact information for your region.

A-dec 311, 411, and 511 Dental Chairs Service Reference

A-dec Headquarters 2601 Crestview Drive Newberg, Oregon 97132 United States Tel: 1.800.547.1883 within USA/CAN Tel: +1.503.538.7478 outside USA/CAN Fax: 1.503.538.0276 www.a-dec.com

A-dec Australia Unit 8 5-9 Ricketty Street Mascot, NSW 2020 Australia Tel: 1.800.225.010 within AUS Tel: +61.(0).2.8332.4000 outside AUS

A-dec China A-dec (Hangzhou) Dental Equipment Co., Ltd. 528 Shunfeng Road Qianjiang Economic Development Zone Hangzhou 311106 Zheijiang, China Tel: +1.503.538.7478

A-dec United Kingdom EU Authorized Representative Austin House, 11 Liberty Way Nuneaton, Warwickshire CV11 6RZ England Tel: 0800.ADEC.UK (2332.85) within UK Tel: +44.(0).24.7635.0901 outside UK Tel: +44 (0) 24 7635 0901 outside UK www.a-dec.co.uk

Web Contact

Partner Resources websites: www.a-dec.biz.

The A-dec 311, 411, and 511 Dental Chairs Service Guide is a companion to the A-dec 311, 411, and 511 Dental Chairs Service Reference (p/n 86.0381.00). The service reference contains illustrated parts breakdown content. Circuit board components and flow diagrams are in both documents.

Other A-dec Service Documents The A-dec 300, 400, and 500 Delivery Systems Service Guide (p/n 86.0382.00) contains service, maintenance, and troubleshooting content. The A-dec 300, 400, and 500 Delivery Systems Service Reference (p/n 86.0383.00) contains illustrated parts breakdown content. Circuit board components and flow diagrams are in both documents. These documents include cuspidors, floor boxes, and support centers. The A-dec Dental Lights and Monitor Mounts Service Guide (p/n 86.0326.00) contains service, maintenance, and troubleshooting content for A-dec dental lights and monitor mounts. The A-dec Dental Lights and Monitor Mounts Service Reference (p/n 86.0328.00) contains illustrated parts breakdown content. Circuit board components and flow diagrams are in both documents.

Genuine A-dec Parts Catalog The Genuine A-dec Service Parts Catalog, p/n 85.5000.00, provides part number and ordering information for A-dec serviceable parts. This catalog details service parts for current products and products which are no longer manufactured but are still supported. Refer to this catalog for additional details on parts found in the service guide.

Electronic Documentation The latest versions of A-dec documents are available as electronic documents on the A-dec website (www.a-dec.com). On the website, select Document Library in the upper-right corner of the page. Check this location for the most current technical information about A-dec products.

A-dec Dental Chairs

A-dec 311 (Version A) Dental Chair

A-dec 311 (Version B) Dental Chair

An optional contoured floor box is also available.

A-dec 411 Dental Chair

86.0380.00 Rev B

A-dec 511 Dental Chair

Overview  5

A-dec 311, 411, and 511 Dental Chairs Service Guide 

Overview  6

Chair Comparison Chart A-dec 311 (Version A) Chair

A-dec 411/311 (Version B) Chair

A-dec 511 Chair

On/Off Button Location Power On/Off

Power Supplies

311 Power Supply (Before March 2013)

311 (A and B) /411 Power Supply (Effective March 2013)

Dual Articulating Headrests/ Neck Support

Neck Support

Locking Knob

Locking Knob

Lever Release

Lever Release

A-dec 311 (Version A) Chair Stop Switch Location

A-dec 411/311 (Version B) Chair

A-dec 511 Chair

(not applicable)

Stop Switch

Chair Drive System

Armrests

86.0380.00 Rev B

Hydraulic Base Electrical Back Two-Position Armrest

Hydraulic Base Hydraulic Back Multi-Position Armrest

Overview  7

A-dec 311, 411, and 511 Dental Chairs Service Guide 

Flow Diagrams   8

Flow Diagrams 311 (A) Chair Flow Diagram (Before March 2013)

ad He l o tr gle Con og To ster T Ma

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/

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m Fro

ead

lH

ro ont

ead lH o r t l Con tro To t Con Foo C

Utilities

and Power Supply Capacitor

To Support Center

Chair (Optional Moisture Separator)

Base Position Sensor Back Position Sensor

Power Supply (Top View)

Solenoid Hydraulic Pump

To Drain

Linear Actuator

Footswitch

From 371 Dental Light or 571-300 Dental Light

311 (A) [Effective March 2013]/311 (B)/411 Chair Flow Diagram )

nly

on siti

Po

(Back) (Base)

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)

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1A 55

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Arm

ost 1P 46

x Bo

To Chair Power Supply

ld/ ad He nifo l a o ad tr gle ter M He al Con og rol t To ster T To Wa idor tion nd n p a o o a ( ad sp om C M Cu He ead Fr l H ator) rol ol t o r n tr Co ont par To t Con m C re se o o r F istu Fo mo

Back Tilt Motor

To Chair Power Supply 361, 362, 363 Post Box 300 Delivery 551 Assistant’s 461 Post Box

43.0363.00

To Drain

Power Supply Capacitor

(Optional Moisture Separator)

Utilities

371 Light 571-300 Light

Solenoid

Chair Lockout Kit

Chair Power Supply (Front View)

Hydraulic Pump Footswitch

86.0380.00 Rev B

Flow Diagrams   9

Flow Diagrams   10

511 Chair Flow Diagram

us To C

Base Stop Switch

pid

Back Position Sensor

Base Position Sensor

or Cu To pfi Wa ll Fro ter To m M Bott Ma as le t Fro ster er To Tog gg m l To Wate gle e Co rb ott To ntro le l As sis Bloc tan k To t’s Flu s h V Syrin To ge alv As To sista e an d n Am alg t’s Sy Doct o am rin ge r's S Se yri pa ng rat e or

A-dec 311, 411, and 511 Dental Chairs Service Guide 

Lower Support Arm and Link Limit Switch To Foot Control

To Delivery System

Manifolds

To Data as Required To Pre-Regulator

From Regulator

To Line volt Accessory To Support Center To Dental Light To Control Head or Assistant’s Touchpad

From Reservoir

Capacitor

To Lift Cylinder 240 V Connector

From Mains

Footswitch

120 V - Hydraulic Pump

To Tilt Cylinder 240 V - Hydraulic Pump

Power Supply

(Switch without Tubing)

240 V Connector

Black and White Wires

(Pink Wires)

86.0380.00 Rev B

Flow Diagrams   11

A-dec 311, 411, and 511 Dental Chairs Service Guide 

Circuit Board Components   12

Circuit Board Components 311 (A and B)/411 Chair Circuit Board 31 32 16 1

43.0363.00

4

5

18 33

24

BASE

25

13 14

26

27

P13 and DS4: • 311 (A): Effective July 2013: Jumpers are required on P10 and P13 for the 311 (A) chair. • 311 (B): Jumpers are required on P13 only. • 411: No jumpers required. 411 has a base and a back limit switch.

3 BACK

20

34

19

30 12

8

11

17

9 21

28

15

7 2 10 23 22

29

6

311 (A and B)/411 Chair Circuit Board LED Identification

311 (A and B)/411 Chair Circuit Board Identification

LED

Status

Description

Item

DS1, DS14, and DS15 - AC power LED

Off

No 24 VAC power, tripped circuit breaker, power supply turned off

Green, steady

24 VAC present

DS2 and DS16Status LED

Off

DS3 - Data LED

DS13 - Chair lockout DS5, DS6 - Chair position sensors

Item

Description

1

DS1 - AC power LED (CB1)

18

P5 - touchpad or footswitch connector

2

DS2, DS16 - status LEDs

19

P6/P7 - data ports

System is not functioning, no power, or circuit board has failed

3

DS3 - data LED

20

P8 - back motor connector

Blue, steady

Normal operation

4

P9 - input power connector

Duty cycle limit of chair back has been exceeded

DS5 - back position sensor, LED/ P1 Connector

21

Blue, single blink

5

DS6 - base position sensor LED/ P2 connector

22

P11 - base motor connector

6

DS7 - dental light LED/Relay K6

23

P12 - input power connector

7

DS8 - dental light LED/Relay K1

24

J1 - 0 VAC terminal strip (output) for Assistant’s, doctor’s, floor box

8

DS9 - back up LED/Relay K2

25

J2 - 24 VAC terminal strip (output) for assistant’s, doctor’s and floor box

9

DS10 - back down LED/relay K3

26

J3 - 0 VAC terminal strip (output) for support center

10

DS11 - base up LED/relay K4

27

J3 - 24 VAC terminal strip (output) for support center

11

DS12 - base down LED/relay K5

28

J5 - dental light output terminal strip

12

DS13 - chair lockout LED/terminal strip J4

29

J6 - dental light input terminal strip

13

DS14 - AC power LED (CB4)

30

J7 - base solenoid terminal strip

Blue, double blink

Jumper is in factory mode

Off

No DCS communication, not connected to the DCS, or DCS has failed

Green, steady

Detects active DCS

Green, blinking

Valid DCS Message

Off

Open, (normal)

Red, on

Closed, (activated)

Off

Position Sensor: not connected or bad connection; moving in wrong direction; limited range of motion

Yellow, steady

Normal operation

Yellow, fast blink

Upper end of travel

Yellow, slow blink

Lower end of travel

DS9, DS10, DS11, DS12, DS17- Chair relay LEDs

Off

Relay is off

On

Relay is on

DS7, DS8 - Dental light relay LEDs

Off

Relay is off

On

Relay is on

CAUTION: Circuit boards are sensitive to static electricity. Electrostatic Discharge (ESD) precautions are required when touching a circuit board or making connections to or from the circuit board. Circuit boards should be installed only by an electrician or qualified service person.

86.0380.00 Rev B

Description

14

DS15 - AC power LED (CB5)

31

P10 - Jumper - 311 (A) chair only

15

DS17 - back on LED/Relay K7

32

P13 - Jumper - 311 (A and B) chairs

16

P3 - testpoints header

33

DS4 - Base stop switch

17

P4 - input power connector

34

DS 18 - Back stop switch

Circuit Board Components   13

A-dec 311, 411, and 511 Dental Chairs Service Guide 

Circuit Board Components   14

511 Chair Circuit Board

15

17 16

11

20

14

12

13

1 18 21

2 10 19 9

8

3

4

5

6

7

511 Chair Circuit Board LED Identification

511 Chair Circuit Board Identification

LED

Status

Description

Item

DS1 - AC power LED

Off

No 24 VAC power, tripped circuit breaker, power supply turned off, no line voltage

Green, steady

24 VAC at the terminal strip

Off

DS2 - Status LED

DS3 - Data LED

Item

Description

1

P7, P8, P9 - data ports

11

DS1 - AC power LED

2

DS4 - stop switch LED (limit switch)/P10 connector

12

DS2 - status LED

System is not functioning, no power or circuit board has failed

3

DS5 - back position sensor LED/ P1 connector

13

DS3 - data LED

Green, steady

Normal operation

4

No DCS communication, not connected to the DCS, or DCS has failed

DS6 - base position sensor LED/ P2 connector

14

Off

DS13 - chair lockout LED/terminal strip J1

5

P5 - footswitch connector

15

J2 - 0 VAC terminal strip (output)

Green, steady

Detects active DCS

6

P3 - testpoints header

16

J2 - 24 VAC terminal strip (output)

7

DS12 - base down LED/relay K5

17

P4 - Input power/dental light connector

8

DS11 - base up LED/relay K4

18

J3 - vacuum relay K7 output terminal strip

9

DS10 - back down LED/relay K3

19

P11 - pump motor/solenoid connector

10

DS9 - back up LED/relay K2

20

DS8 - dental light LED relay/K1

21

DS7 - dental light LED relay/K6

Green, blinking

Valid DCS message

DS4 - Chair limit switch

Off

Closed, (normal)

Red

Open, (activated)

DS13 - Chair lockout

Off

Open, (normal)

Red

Closed, (activated)

DS5 + DS6 Chair position sensors

Off

Position Sensor: Not connected or bad connection; moving in wrong direction; limited range of motion; or cable is not on the pully

Yellow, steady

Normal operation

Yellow, fast blink

Upper end of travel

Yellow, slow blink

Lower end of travel

DS9, DS10, DS11, DS12 Chair relay LEDs

Off

Relay is off

On

Relay is on

DS7, DS8 Dental light relay LEDs

Off

Relay is off

On

Relay is on

DS14 - Vacuum relay LED

Off

Relay is off

On

Relay is on

86.0380.00 Rev B

Description

CAUTION: Circuit boards are sensitive to static electricity. Electrostatic Discharge (ESD) precautions are required when touching a circuit board or making connections to or from the circuit board. Circuit boards should be installed only by an electrician or qualified service person.

Circuit Board Components   15

A-dec 311, 411, and 511 Dental Chairs Service Guide 

311 (A) Chair Service, Adjustments, and Maintenance   16

311 (A) Chair Service, Adjustments, and Maintenance Chair Covers [311 (A)] DANGER Failure to turn off the power before you begin this procedure can lead to electrical shock.

Integrated Floor Box Cover Removal To access the on/off button and power supply on chairs with an integrated floor box cover, pull the utility cover out at the cover posts and lift the cover off .

WARNING Failure to turn off the power before you begin this procedure can lead to product damage and result in serious injury or death. CAUTION When removing or replacing covers, take care not to damage any wiring or tubing. Verify that the covers are secure after replacing them.

Cover Post

Contoured Floor Box Cover Set Removal To access the on/off button and power supply on chairs with a contoured floor box cover set, first remove the front floor box cover. Grasp the cover on both sides and pull up. If needed, use a large coin in the integrated coin slot to gently separate the contoured floor box cover from the frame. Then remove the power supply cover.

2. With your thumbs on the top of the upper lift arm cover, grasp from the bottom and pull up and push in to disengage tabs from slots.

3. Lift out the upper lift arm cover. Coin Slot

4. Remove the lift arm and lower lift arm cover.

CAUTION Take care not to damage the cover when using the coin slot.

Lift Arm Covers Removal If the utility cover is installed, remove it before beginning this procedure. 1. Raise the chair base all the way up.

86.0380.00 Rev B

311 (A) Chair Service, Adjustments, and Maintenance   17

A-dec 311, 411, and 511 Dental Chairs Service Guide 

311 (A) Chair Service, Adjustments, and Maintenance   18

Upholstery [311 (A)]

Seat Upholstery Removal/Attachment

Back Upholstery Removal/Attachment To remove the upholstery, firmly grasp the bottom edge of the armature and lift up, then lift the upholstery away from the chair back support. To reattach, place the key holes in the armature over the large fastener heads, then push down until the upholstery inserts into position.

Lift up, then pull out

CAUTION When replacing the upholstery, ensure the pins are completely in place. The pin ring should be flush with the Armature seat armature.

Remove Headrest Fastener Heads

Lift up, then pull out

Fastener Heads

Headrest Upholstery Removal/Attachment To remove the headrest upholstery, position the headrest to access the two screws on the back, loosen the screws and remove the upholstery. To reattach, position the headrest to access the screws, place the upholstery on the headrest, insert and tighten the screws.

Mounting Screws

To remove the seat upholstery, pull the pins out on both sides of the seat armature, then lift the seat and move it away.

Pin Ring

Factory Default Routine [311 (A and B) and 411] CAUTION The position sensors can be inadvertently installed upside down. Improper installation will limit the chair’s functionality. After installing a new chair, circuit board, or position sensor, run the factory default routine. The routine:

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 mid position.

• Sets the chair base and back upper limits

6. Moves back and base down.

• Calculates new preset positions based on actual range of motion of the chair

7. Moves base and back to mid position.

• Verifies that the position sensors work correctly

8. Moves base and back to Entry/Exit.

To start the factory default routine, place the spare jumper in the factory default position on the P3 test points of the chair circuit board. CAUTION Circuit boards are sensitive to static electricity. Electrostatic Discharge (ESD) precautions are required when touching a circuit board or making connections to or from the circuit board. Circuit boards should be installed only by an electrician or qualified service person. Jumper in Factory Default Position

43.0363.00

BASE

9. Three beeps confirm the routine completed successfully. Once the routine completes, place the jumper into the Spare position on P3. 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. When the routine is complete, three beeps sound. If the routine stops prematurely, one beep sounds. NOTE One beep indicates the routine failed to complete. See page 56 for troubleshooting.

BACK

86.0380.00 Rev B

311 (A) Chair Service, Adjustments, and Maintenance   19

A-dec 311, 411, and 511 Dental Chairs Service Guide 

311 (A) Chair Service, Adjustments, and Maintenance   20

Chair Drive System [311 (A)]

Chair Manifold Adjustment System [311 (A)]

The hydraulic chair system controls the base movement of the chair. An electro-mechanical tilt actuator controls the back movement.

Use a 3/32" hex key, to move the base down adjustment screw to change the base down [chair] speed. Turning the screw clockwise (tightening) decreases the base down speed. Turning the screw counterclockwise increases the base down speed.

The chair seat has a vertical range of 13.75" (349 mm) to 29.5" (749 mm) above the floor.

Hydraulic Motor Pump Assembly

Base Down Adjustment Screw

Chair Manifold Assembly

NOTE Do not over tighten the adjustment screw. If the screw is too tight, the chair may not move.