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