Transcript A-dec 511 Dental Chair
A-dec 511 Dental Chair
Copyright 2005 All Rights Reserved 1
Product Overview – Pg 10
A-dec 511 Chair
Features Headrest Armrest Baseplate Back Seat Hydraulic Motor Pump Assembly Copyright 2005 All Rights Reserved 2
Chair Specifications – Pg 11
Load Capacity
Patient 300 lb (135 kg) Accessory 250 lb (113 kg) Note: Bolt chair to floor
Power On/Off Button Limp-Along Feature
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Chair Specifications – Pg 12
Chair Power Supply
Comes standard with the 511 chair Electric switch connects the power supply to pilot air Copyright 2005 All Rights Reserved 4
Chair Flow Diagram – Pg 15
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Service/Usage Information – Pg 16
Chair Covers
Motor pump cover requires hex wrench Lift arm cover: pull outward to flex cover over stops Stop plate cover: pull tabs out over pegs Copyright 2005 All Rights Reserved 6
Service/Usage Information – Pg 17
Factory Default Routine
Sets the base and back upper limits Calculates new presets base on actual range of the chair Verifies that the potentiometers work Copyright 2005 All Rights Reserved 7
Chair Circuit Board – Pg 18-19
Circuit Board Components
Refer to the table on page 18 and Figure 6 on page 19 Copyright 2005 All Rights Reserved 8
Chair Circuit Board Revisions
Rev D
Adds bump up when chair lockout detected Increased electrical current for lift and support arm limit switches, released 01/05
Rev E
Base up/down travel limits can be set, released 04/05
Rev F
Positioning improved when using button for x-ray/rinse, released 06/05 Copyright 2005 All Rights Reserved 9
Circuit Board Components – Pg 20
LED Identification
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Hydraulic System – Pg 21
How the Hydraulic System Operates
Motor-driven hydraulic pump with solenoids Hydraulic cylinders Hydraulic Fluid Reservoir Check with base and back full up Use only A-dec fluid 61.0197.00
System holds 40 ounces
1.18 liters.
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Hydraulic System
Bidirectional motor
Replace as compete assembly
Depressurize the system before disassembling hydraulic components.
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Hydraulic System – Pg 22
Hydraulic Cylinders
The hydraulic cylinders operate during Base Up and Back Up functions. Springs and gravity retract the piston during Base Down and Back Down functions.
The chair seat travels vertically from a low point of 13.5” (343mm) to a high point of 31.5” (800mm) above the floor.
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Chair Hydraulic Base Cylinder
Base cylinder replacement
Remove motor pump, lift arm and stop plate covers Position chair base up Lower chair on solid support Remove rod screw and the pivot pin Remove reservoir cap Operate base down while pushing rod into cylinder Remove 2 screws at base of cylinder Remove hydraulic hose from cylinder Copyright 2005 All Rights Reserved 15
Chair Hydraulic Back Cylinder
Back cylinder replacement
Remove seat and back upholstery Position chair back down Remove hydraulic hose and vent line from cylinder Remove snap ring at rear of trunion Unscrew cylinder rod from bearing clevis using a 9/64 hex key through hole Pull cylinder out from front of trunion Copyright 2005 All Rights Reserved 16
Hydraulic System – Pg 23
Capacitor
The capacitor is energized during chair Base Up or Back Up functions.
Voltage and m F specific Copyright 2005 All Rights Reserved 17
Hydraulic System – Pg 24
Solenoids
Down only Line voltage specific
How to Test Solenoids
To check for a failed solenoid, test the solenoids using a volt/ohm meter or magnetic pull test.
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Hydraulic System
Pump Motor Assembly
Soft Start/Stop Accumulator - dampens hydraulic shock by acting like a shock absorber.
Bi-directional Pump Turns one direction for Base Up, the opposite for Back Up Gravity and springs only for Base Down and Back Down
Accumulator
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Potentiometer – Pg 25
Back and base pots are interchangeable assemblies
P/N 90.1069.00
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Chair Stop Plate – Pg 26
Activation causes chair to stop down movement, PCB signals momentary base up
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Swivel Brake – Pg 27
Swivel Brake Adjustment
Release brake tension Insert 7/64” hex wrench in through hole and into adjustment screw Turn wrench to right to increase brake friction Copyright 2005 All Rights Reserved 22
Headrest – Pg 28
Drift Adjustment
Use 1/8” hex wrench Turn clockwise to increase friction on glide bar Copyright 2005 All Rights Reserved 23
IPB – Pgs 29-47
Part Identification
Baseplate & Motor Pump Assembly Hydraulic Hose & Solenoid Assembly Lift Cylinder & Link Arm Lower Assembly Upper Structure/Swivel Assembly Upper (Seat Assembly) Headrest Assembly Copyright 2005 All Rights Reserved 24
A-dec 511 Dental Chair
Copyright 2005 All Rights Reserved 25