1. Manuals
  2. Brands
  3. Acorn Manuals
  4. Stairlifts
  5. 80
  6. Maintenance service manual

Acorn 80 Maintenance Service Manual

Hide thumbs Also See for 80:
Table of Contents

Advertisement

Quick Links

Acorn 80
Maintenance & Service Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 80 and is the answer not in the manual?

Questions and answers

Related Manuals for Acorn 80

Summary of Contents for Acorn 80

  • Page 1 Acorn 80 Maintenance & Service Manual...
  • Page 2 6.4.1 Testing The OSG 6.4.2 Re-setting The OSG 6.5 Testing Batteries 7 Dismantling Components 7.1 Covers 7.1.1 Front Cover 7.1.2 Carriage Covers 7.2 Seat 7.2.1 Removal 7.2.2 Refitting A Seat 7.3 Footrest 7.3.1 Removal ACORN 80 Maintenance & Service Manual...
  • Page 3 10.9.5 550 Powered Swivel R/H Seat Spacer Complete 10.9.6 580 Powered Swivel R/H Seat Spacer Complete 10.9.7 Carriage Front Cover Assembly 10.10 Seat Adaptor Plate Assembly Instructions 10.11 Seat Adaptor Plate Retro-fit Kit Appendix 11 - Notes ACORN 80 Maintenance & Service Manual...
  • Page 4 SECTION 1 Introduction INTRODUCTION This manual contains instructions for servicing and maintenance of the Acorn 80 Stairlift. It should be used in conjunction with these documents: Acorn 80 Survey Manual Acorn 80 Installation Manual Acorn 80 User Manual Product Price Guide Parts Price Guide ACORN 80 Maintenance &...
  • Page 5 Note - Supplementary information. 1.2 Safety Only Acorn trained engineers should carry out work on the Stairlift. All national rules and regulations concerning safety, electrical work or environmental protection should supplement, and may supersede, this document. Only Acorn parts should be fitted to the Stairlift.
  • Page 6 It has a maximum safe load of 120 kilograms (265 pounds or 19 stone). It is the responsibility of the person installing the lift to: Fully test it in accordance with the Acorn 80 Installation Manual and any local statutory requirements. 1.7 Standard Acorn 80 Specification LIFTS ARE DESIGNATED LEFT HAND OR RIGHT HAND AS VIEWED UP THE STAIRS.

  • Page 7: Seat Options

    1.7.3 Seat Options Non-padded Seat or Arms Powered Seat Swivel Space Saver Seat Quick Release Clasp Seatbelt Reel Seatbelt Double Reel Seatbelt Alternative seat heights (using seat spacers) Fixed seat Barrier arm Seat adapter plate ACORN 80 Maintenance & Service Manual...

  • Page 8: Description Of Operation

    Description Of Operation DESCRIPTION OF OPERATION 2.1 General Arrangement The Acorn 80 Stairlift comprises a seat (1) and footrest (6), mounted on a motor driven carriage (9). All Stairlifts are provided with a Seatbelt (11) The Stairlift is operated with a Holding Switch (3) and a Direction Controller (12).

  • Page 9: Carriage Operation

    The levelling motor (LM) adjusts the frame to maintain the seat upright when moving over vertical bends. An over-speed governor (OSG) will activate and stop the carriage in the case of an uncontrolled descent. ACORN 80 Maintenance & Service Manual...
  • Page 10 Carriage speed is decreased when traversing vertical bends, inside horizontal bends and helical bends. The speed sequence is programmed during installation. If battery power is lost the datum setting must be re-programmed. The carriage has a “soft” start and stop feature. ACORN 80 Maintenance & Service Manual...

  • Page 11: Safety Features

    Anti-tilt mechanism to prevent the carriage from tipping excessively in the event of a levelling failure. Any one of the five pressure-sensitive edges (PSEs) striking an obstruction. There are two either side of the carriage (A), two either side of the footrest (B) and one under the footrest (C). ACORN 80 Maintenance & Service Manual...

  • Page 12: Installation & De-Installation

    (R). ON NO ACCOUNT MUST POWER TOOLS BE USED TO WIND THE CARRIAGE ON OR OFF THE RAIL. SECTION 4 Installation & De-Installation Refer to the Installation Manual for detailed instructions. ACORN 80 Maintenance & Service Manual...

  • Page 13: Safety Procedures

    This Stairlift must only be serviced and maintained by trained personnel. Training can usually be arranged free of charge via your local area representative or through Acorn Technical Services Department. A Video Compact Disk (VCD), showing servicing and maintenance procedures, is also available as a training aid for trained personnel.

  • Page 14: Diagnostic Display

    Lift is in Standby Condition but Batteries are fast charging holding switch is set to off (small light on) Batteries are trickle charging Lift is moving up the rail (small light flashing) Lift is moving down the rail ACORN 80 Maintenance & Service Manual...
  • Page 15 Warning. The safe working load is one person only at a maximum weight of 120kg (265 pounds – 19 stone). ON HAND WINDING COVER Emergency Handwind. Please remove cover for access. INSIDE HAND WINDING COVER Ensure lift power is off. Ensure no obstructions! Insert Hand Winding Wheel and rotate to move carriage. ACORN 80 Maintenance & Service Manual...

  • Page 16: Programming Summary

    CREEP SPEED (slow) is the default setting and is used just before stopping. BEND SPEED when moving around vertical, inside horizontal bends and helical bends. It is also used as an intermediate speed. FULL SPEED along straight rail sections. ACORN 80 Maintenance & Service Manual...
  • Page 17 The carriage is now ready for programming down the full length of the rail. ACORN 80 Maintenance & Service Manual...
  • Page 18 While still in program mode drive the lift up so that both charge plungers are on the charge point. Switch PROGRAM MODE to OFF (into run mode). The standby symbol will be displayed. ACORN 80 Maintenance & Service Manual...
  • Page 19 Move the lift away from the charge point until the contact pins clear the charge point plates. This sets the datum (D) Move the lift back past the top charge point until it stops itself on the top final limit switch. This sets the Top Terminal Limit (T1) ACORN 80 Maintenance & Service Manual...
  • Page 20 On all bends (except external horizontal bends) when the portcullis (P) is above the first bend joint line switch FULL SPEED to OFF - this reverts the lift to BEND SPEED (B) (if applicable). Repeat this procedure for all vertical, inside horizontal and helical bends on the installation. ACORN 80 Maintenance & Service Manual...
  • Page 21 THE LIFT MUST NOW BE TESTED TO ENSURE THAT IT IS OPERATING CORRECTLY. THE ELECTRICAL AND MECHANICAL INSTALLATION MUST BE TESTED IN ACCORDANCE WITH LOCAL SPECIFICATIONS AND STANDARDS. 6.3.11 Hinge Zone Hinge instructions now available. See Appendix 6. ACORN 80 Maintenance & Service Manual...
  • Page 22 CREEP SPEED IS OVERRIDDEN AT THIS POINT AND THE LIFT RUNS IN BEND SPEED. Drive the lift down the rail checking the levelling and speeds are satisfactory and the approach to the bottom terminal limit is okay, and the lift stops where it should. ACORN 80 Maintenance & Service Manual...
  • Page 23 1 Do not move the top charge point after datum has been set 2 Do not alter the level calibration potentiometer before or after programming 3 Do not alter the level calibration potentiometer without programming the full system ACORN 80 Maintenance & Service Manual...
  • Page 24 Cam gear tooth and the OSG wedges will be up against the rail. OSG NOT TRIGGERED OSG TRIGGERED OSG Regulator weight in level position OSG Regulator weight in upright position ACORN 80 Maintenance & Service Manual...
  • Page 25 To reset the OSG, Press and hold down on the Reset Lever (In a downstairs direction) and this will deactivate the switch by resetting the plunger back to its original position. PLUNGER RESET LEVEL Reset back to its To be pressed in a original position downstairs direction ACORN 80 Maintenance & Service Manual...
  • Page 26 Cam gear. Once set, release the reset lever. Press down on the White trigger into its normal operating position ensuring the teeth of the regulator stay clear of the gear. TRIGGER CAM GEAR White Correct position of regulator and gearing ACORN 80 Maintenance & Service Manual...

  • Page 27: Testing Batteries

    The following readings are satisfactory: Battery Voltage 26-30V D.C. Charge Voltage 30V D.C. Trickle Charge Current 400 milliamps D.C. Bulk Charge Current 800 milliamps IF ANYTHING CHANGE FROM THE ABOVE READINGS CONTACT TECHNICAL SUPPORT +44 (0)871 200 2448 ACORN 80 Maintenance & Service Manual...
  • Page 28 Winding Caps, which can be lifted off. Drive Motor Hand Winding Cap Levelling Motor Hand Winding Cap Carriage Top Cover Levelling Bogie Outer Cover Power Bogie Outer Cover Levelling Bogie Inner Cover Power Bogie Inner Cover ACORN 80 Maintenance & Service Manual...
  • Page 29 Hold paddle arms down and push the seat fully down into the frame (F). Check the seat swivel locking mechanism operates correctly, using the swivel paddles (SP). Connect the seat wiring (W) to the PCB connector. ACORN 80 Maintenance & Service Manual...
  • Page 30 THE BOARD IS NOT REPAIRABLE ON SITE AND MUST BE RENEWED AS A COMPLETE UNIT. Fit a replacement board and secure with the four screws. Reconnect the board to the main PCB connection marked FOOTREST. ACORN 80 Maintenance & Service Manual...
  • Page 31 Black cables connect to BATTERY NEGATIVE terminals on the PCB (B-). Refit white thermocouple wires. Re-program the datum and final limit positions at the top of the rail – see Programming/Datum Setting & Top Parking. ACORN 80 Maintenance & Service Manual...

  • Page 32: Printed Circuit Board (Pcb)

    (MB) and daughter board (DB) as one unit, including nylon spacers. Refit the board with 4 nylon spacers. Re-connect all cables to the PCB terminals (see section on PCB Connections). SWAP TRANSCEIVER FROM OLD BOARD (REMOVED) AND FIT TO NEW BOARD ACORN 80 Maintenance & Service Manual...
  • Page 33 Dismantling Components 7.5.2 Supercharger Systems For Acorn 80 rail systems with a total rail length greater than 10 metres a high power charging system is fitted to ensure the rapid recovery of the batteries during the re-charge cycle. The high power charging system consists of a charger (part number 1021312) and a main pcb (part number 1231457).
  • Page 34 SECTION 7 Dismantling Components Modified component on the Mother board Supercharger PCB (Part number 1231457) ACORN 80 Maintenance & Service Manual...

  • Page 35: Pcb Connections

    13 Footrest 14 Main Motor Positive 15 Main Motor Negative 16 Battery Positive 17 Battery Negative 18 Thermistor 19 Charger 20 Left-hand PSE (Pressure Sensitive Edge) 21 Arm 22 Options 23 Seat 24 Overspeed ACORN 80 Maintenance & Service Manual...
  • Page 36 Fit the winding handle (W) onto the top of the drive motor, and then wind the carriage onto the transfer rail. The transfer rail has a rack fixed to it so the carriage can be run fully onto the rail. ACORN 80 Maintenance & Service Manual...
  • Page 37 THESE ITEMS ARE SHOWN AS PART OF THE ASSEMBLY AND ARE NOT NECESSARILY COMPLETE SPARE PARTS. MAIN FRAME ASSEMBLY Top Casting Button Head Bolt Bearing Bearing PSE Switch Bearing Shoe Bottom Bearing Mainframe Casting 10 Right hand switch (PSE) shown assembled ACORN 80 Maintenance & Service Manual...
  • Page 38 The left-hand switch (5 - shown removed) connects to the corresponding terminal marked PSE on the main PCB. The right-hand switch (10 - shown assembled) connects to the corresponding terminal marked PSE on the main PCB. ACORN 80 Maintenance & Service Manual...
  • Page 39 Fit one screw to pull plate. ON NO ACCOUNT MUST POWER TOOLS BE USED TO WIND THE CARRIAGE ON OR OFF THE RAIL. ACORN 80 Maintenance & Service Manual...
  • Page 40 Where necessary, fit the last section of rail. Level the carriage as required, using the winding handle (W) on the levelling motor. Check the carriage is level with a spirit level on the footrest. ACORN 80 Maintenance & Service Manual...
  • Page 41 Front Casting Gear Shutter Assembly Side Roller Assembly Gear Wheel Assembly Tenon Block Front Cover POWER BOGIE REAR ASSEMBLY Rear Frame Rail Follower Assembly Drive Motor Pinion Support Wheel Backstop Gear Rear Hub Assembly Gear ACORN 80 Maintenance & Service Manual...
  • Page 42 - renew if necessary. 7.7.3 Reassembling Rollers & Pinion Fit Gearwheel (G) and secure with Screw (SG). Fit the rail follower (F). Fit the pinion key into the shaft then fit the bearing and pinion (P). ACORN 80 Maintenance & Service Manual...
  • Page 43 Apply thread locking compound to the four cap screws and refit gearbox and motor to the rear frame. Reconnect the MAIN MOTOR POSITIVE, MAIN MOTOR NEGATIVE, DRIVE MOTOR ENCODER and MAIN MOTOR BRAKE to the main PCB terminals. ACORN 80 Maintenance & Service Manual...
  • Page 44 Check that the Regulator and Trigger arm are in the position shown below. IF THE OSG DOES NOT LOOK LIKE THIS DO NOT ATTEMPT TO MOVE THE CARRIAGE - refer to the OSG resetting instructions. Regulator Trigger Arm Trigger Arm Regulator ACORN 80 Maintenance & Service Manual...
  • Page 45 To reset the OSG, Press and hold down on the Reset Lever (In a downstairs direction) and this will deactivate the switch by resetting the plunger back to its original position. PLUNGER RESET LEVEL Reset back to its To be pressed in a original position downstairs direction ACORN 80 Maintenance & Service Manual...
  • Page 46 Switch on the lift using the holding switch located on the seat arm/ back of the seat LATCH & LEVER WEDGE ARM cover. Located around the wedge arm Run the lift an upward direction using the direction controller. ACORN 80 Maintenance & Service Manual...
  • Page 47 Remove the screw using a 3mm Allen key and long nosed pliers. Handwind the lift up the rail until the second OSG body fixing screw is accessible and remove as described above. Carefully remove the OSG body. OSG body removed ACORN 80 Maintenance & Service Manual...
  • Page 48 SECTION 7 Dismantling Components To Remove the OSG Hub Refer to the Acorn 80 Installation Manual and remove the carriage from the rail. Remove the transfer rail from the carriage. Remove the osg bracket. The hub can be rotated to give access to both the fixing bolts by placing a hand inside the power bogie and turning the drive wheel in the desired direction.
  • Page 49 Ensure the centre-pop mark on the hub is positioned to the bottom. CENTRE MARK Secure the hub to the casting by re-assembling the retainer ensuring that the rollers are aligned THESE ROLLERS MUST BE ALIGNED RE-ASSEMBLE RETAINER AS ABOVE ACORN 80 Maintenance & Service Manual...
  • Page 50 CHECK FOR PRESSURE BY PRESSING THE OSG WEDGES AGAINST THE OSG HUB. RESISTANCE TO THE MOVEMENT OF THE WEDGES SHOULD BE FELT AS THEY PRESS AGAINST THE PLUNGER SPRING, AND THERE SHOULD BE VISIBLE MOVEMENT OF THE PLUNGER. ACORN 80 Maintenance & Service Manual...
  • Page 51 OVER THE POWER BOGIE STEERING HUB ROLLER. Refit the carriage to the rail following the procedures laid out in the Acorn 80 Installation Manual. Re-fit all covers and the seat and test the operation of the lift. ACORN 80 Maintenance & Service Manual...

  • Page 52: Main Components

    Pivot Spindle Centre Block Front Guide Rail Assembly Rear Guide Rail Assembly Slide Assembly – see detailed view Levelling Motor Motor Pulley Ball Screw Pulley Timing belt 10 Ball Screw Assembly 11 Overtravel Limit Switches ACORN 80 Maintenance & Service Manual...
  • Page 53 Vee Wheel Assembly Wheel Steering Plate Rear Slider Anti Tilt Hook Anti Tilt Link Anti Tilt Wheel Assembly Slider Top Side Wheel Assembly Mid Slider 10 Top Roller 11 Front Slider 12 Side Wheel Assembly ACORN 80 Maintenance & Service Manual...
  • Page 54 Refit the motor pulley and ball-screw pulley together with the timing belt. Levelling Motor marked LEVEL MOTOR POSITIVE and LEVEL MOTOR NEGATIVE on the main PCB. Reconnect the levelling Motor Encoder to terminal marked LEVEL MOTOR ENCODER on the main PCB. ACORN 80 Maintenance & Service Manual...
  • Page 55 7.8.8 Rollers Inspect top roller (TR) and side rollers (SR) – renew as necessary. ACORN 80 Maintenance & Service Manual...
  • Page 56 Spares can be ordered from our Service Department on +44(0)845 245 3600. When ordering spare parts Acorn require the following information to ensure that the correct parts are dispatched: Lift Type and Serial Number - this information is on the machine identification plate.

  • Page 57: Service Checklist

    D.C. charge current satisfactory and record mA = GENERAL Check all warning and information labels are fitted where necessary. Check operation of arm control device. Check operation of call and sends. Lift Serial Number Other Work Required or Completed ACORN 80 Maintenance & Service Manual...

  • Page 58: Recommended Tool List

    19mm x 1/2 inch drive socket Digital Angle Finder 10 Digital Multi-meter 11 5m Steel Measuring Tape 12 1/2 inch drive Torque Wrench with suitable scale setting 13 Rack Meshing Tool 14 Crimping Tool ACORN 80 Maintenance & Service Manual...

  • Page 59: Recommended Torque Settings

    Recommended Torque Settings Torque settings Component Newton metres (Nm) Foot Pounds M12 Leg clamp fixing bolt 66.4 M10 Top joint box grub screw M8 Pull plate countersink fixing screws M8 Bottom Joint fixing screws ACORN 80 Maintenance & Service Manual...

  • Page 60: Recommended Lubricants

    APPENDIX 4 Recommended Lubricants Recommended Lubricants Component Lubricant Seat swivel pin Rail Rack Interflon Fin Grease Levelling Vee Wheel Rails (Acorn part number 902231) Power Bogie Gear Wheel Thrust Washers Silicon Grease Levelling Ball Screw ACORN 80 Maintenance & Service Manual...
  • Page 61 The Stairlift has overrun the normal parking position and Programming mode is on Main Drive Over Speed activated the Final Limit Switch. Programming the terminal Over-speed Governor has Levelling Over Speed limits (charge point positions) been activated ACORN 80 Maintenance & Service Manual...

  • Page 62: Channel Selection

    Dip switches (S) on the transceiver board (T) are set to ON or OFF. Set the dip switches (S) to the positions indicated below. Channel Selection Green Loop Yellow Loop Switch 1 Switch 2 Channel Uncut Uncut Uncut Uncut ACORN 80 Maintenance & Service Manual...
  • Page 63 This can happen when a meter probe is forced into the plug while testing. It can also make a connection and appear to be working correctly until the probe is removed! ACORN 80 Maintenance & Service Manual...
  • Page 64 The supply voltage to both speed and Levelling chips is 5V, and can be measured On Pin 1. Repeat the same test for the main drive encoder. The channels are the WHITE and GREEN wires. ACORN 80 Maintenance & Service Manual...
  • Page 65 Leveling chip voltages The supply voltage for the levelling chip can be measured on PIN1. (Approximately 5V) The calibrated accelerometer voltage can now be checked on PIN 2. PIN 2 2.5V SUPPLY PIN 1 ACORN 80 Maintenance & Service Manual...
  • Page 66 APPENDIX 8 Charge System ACORN 80 Maintenance & Service Manual...
  • Page 67 APPENDIX 9 Wiring Diagrams ACORN 80 Maintenance & Service Manual...
  • Page 68 In order to change the hand of the seat the below changes must be implemented. Remove the grub screw securing the Swivel Pin in position and remove the shaft one loosened. GRUB SCREW 104CSB33 ACORN 80 Maintenance & Service Manual...
  • Page 69 LOCTITE 243 AND SECURE IN POSITION The lift has now been changed to a Left Handed seat. Place seat on carriage and check to see if the swivel release operates freely and locks correctly. ACORN 80 Maintenance & Service Manual...
  • Page 70 OPTION 1A OPTION 2A REMOVE 2 x M8 REMOVE DOME CSK SCREW HEAD SCREWS 901045 1040250 OPTION 1B OPTION 2B REMOVE 4 x M8 REMOVE 4 x M8 NUTS x 20 SCREWS 900009 901200 ACORN 80 Maintenance & Service Manual...
  • Page 71 Position the new Seat spacer assembly onto the mainframe ensuring the hole for the Seat swivel pin is correctly aligned with the hole on the mainframe casting and that the Seat interlock harness is fed through the casting correctly. ACORN 80 Maintenance & Service Manual...
  • Page 72 SECURE WITH 4x TIE WRAPS Secure front cover back onto the mainframe. 10 Reposition the seat onto the carriage, Reconnect carriage harness and secure Lower back cover and back pad back onto the seat. ACORN 80 Maintenance & Service Manual...
  • Page 73 OPTION 1A OPTION 2A REMOVE 2 x M8 REMOVE DOME CSK SCREW HEAD SCREWS 901045 1040250 OPTION 1B OPTION 2B REMOVE 4 x M8 REMOVE 4 x M8 NUTS x 20 SCREWS 900009 901200 ACORN 80 Maintenance & Service Manual...
  • Page 74 1243017 – 580 Powered Swivel Seat Spacer complete R/H Remove Swivel pin thrust washer (112CSB22) from the Powered swivel spacer assembly and position onto the swivel pin on the bottom of the new powered swivel seat. SWIVEL PIN THRUST WASHER 112CSB22 ACORN 80 Maintenance & Service Manual...
  • Page 75 Socket Cap Head screws (902100) and connect the seat interlock harness to the main PCB board as shown below. 4 x PATCHED M8 x 20mm SOCKET CAP HEAD SCREWS 902100 REMOVE SEAT INTERLOCK HARNESS ACORN 80 Maintenance & Service Manual...
  • Page 76 Once released pull down on the seat ensuring that the gear teeth are aligned to the motor quadrant positioned on the base of the seat. ACORN 80 Maintenance & Service Manual...
  • Page 77 WITH THE SEAT BASE EDGE OF SEAT BASE OR SLIGHTLY ABOVE WHEN FULLY CLOSED 14 Connect the options and seat harnesses from the seat to the harnesses from the carriage. OPTIONS HARNESS ARM HARNESS ACORN 80 Maintenance & Service Manual...
  • Page 78 IN ORDER FOR THE SUPERCHARGER LINK WIRE TO WORK, THE MAIN PCB MUST ALSO HAVE A LINK WIRE ON THE BACK OF THE BOARD AS SHOWN BELOW LINK WIRE ON THE BACK OF THE BOARD ACORN 80 Maintenance & Service Manual...
  • Page 79 PCB as shown. SUPERCHARGER LINK WIRE 1021542 Connect the charge harness to the supercharger link wire. Neatly secure cable with cable ties and re-assemble front cover to carriage. SUPERCHARGER LINK WIRE CHARGE HARNESS ACORN 80 Maintenance & Service Manual...
  • Page 80 OPTION 1A OPTION 2A REMOVE 2 x M8 REMOVE DOME CSK SCREW HEAD SCREWS 901045 1040250 OPTION 1B OPTION 2B REMOVE 4 x M8 REMOVE 4 x M8 NUTS x 20 SCREWS 900009 901200 ACORN 80 Maintenance & Service Manual...
  • Page 81 Secure the adaptor plate assembly to the carriage using the supplied 4 PATCHED M8 x 30MM CSK socket cap screws (901045) and 4 M8 nuts (900009). HARNESS WIRING FED CORRECTLY THROUGH THE MAINFRAME CASTING M8 x 30mm CSK 4 x M8 NUTS SOCKET CAP SCREWS 900009 901045 ACORN 80 Maintenance & Service Manual...
  • Page 82 THE SEAT BASE Reconnect the Seat interlock harness onto the board as shown and secure the harness in place with 4 x Tie wraps. RECONNECT HARNESS TO MAIN PCB SECURE WITH 4x TIE WRAPS ACORN 80 Maintenance & Service Manual...
  • Page 83 10 Rotate the seat base and the following should be seen on the display whilst the call is activated. 11 If this does not happen then loosen and adjust the plastic cover until the position of the switch is correct. 12 Secure Front cover to carriage. ACORN 80 Maintenance & Service Manual...
  • Page 84 Remove Front cover from the carriage. Disconnect Arm Harness from Main PCB and completely remove from carriage. Unpack carriage cover assembly kit, parts included are as shown below. B80 CARRIAGE FRONT COVER ASSEMBLY 1249000 ARM / SWITCH HARNESS 1021541 ACORN 80 Maintenance & Service Manual...
  • Page 85 PCB as shown. HARNESS FED THROUGH THE REAR OF THE MAINFRAME CASTING CONNECT ARM FEED HARNESS HARNESS THROUGH THE CENTRE TO THE PCB OF THE MAINFRAME ACORN 80 Maintenance & Service Manual...
  • Page 86 ON/OFF switch connector Pin 3 as shown. Connect Keyswitch Male block connector to Female block connector on Arm harness. RED PLUG MALE BLOCK CONNECTOR TO CONNECTED TO FEMALE BLOCK CONNECTOR ON ARM HARNESS PIN 3 ACORN 80 Maintenance & Service Manual...
  • Page 87 2 m4x10 Pozi screws (902101). 13 Place new seat onto carriage and connect the seat harness to the carriage harness as shown. 14 Complete Seat and carriage with upgrade. ACORN 80 Maintenance & Service Manual...
  • Page 88 BE LOCATED ON THE CARRIAGE AND A BLANKING PLATE WILL BE POSITIONED WHERE THE SWITCH PREVIOUSLY WAS. Push on the front of the seat arm pad to release, then slide and remove pad completely. Unscrew and remove the 3 screws indicated in the image below. ACORN 80 Maintenance & Service Manual...
  • Page 89 Disconnect Arm harness from the ON/OFF switch by disconnecting the block connectors as shown, and then remove the 4 screws securing the ON/OFF switch in position. REMOVE 4 POZI SCREWS DISCONNECT HARNESS FROM SWITCH ACORN 80 Maintenance & Service Manual...
  • Page 90 4 No.8x1/2 Pozi pan screws (104CSA38). SECURE WITH 4 No.8 BLANK PLATE x ½ POZI PAN SCREWS 112CSA27 104CSA38 Reposition lower cover in place and secure with 3 M3x16 screws (104CSA46). M3 x 16 SCREWS 104CSA46 ACORN 80 Maintenance & Service Manual...
  • Page 91 APPENDIX 10 Rationalisation Procedures Line up groves of arm pad with cut-outs of the arm casting and push the arm pad into position, ensuring that it is fully secured. Complete seat to new revision. ACORN 80 Maintenance & Service Manual...
  • Page 92 WHERE THE SWITCH PREVIOUSLY WAS. ON / OFF SWITCH LOCATED ON THE SEAT BACK COVER Remove padded seat insert, and lower back seat cover by unscrewing all 8 screws as indicated in the image below. UNSCREW 8 SCREWS ACORN 80 Maintenance & Service Manual...
  • Page 93 BY PUSHING ON THE REAR OF THE SWITCH REMOVE ARM HARNESS FROM HERE Remove Yellow indication sticker (if present) from the back cover, and assemble hole plug by pressing in. ON / OFF SWITCH HOLE PLUG ACORN 80 Maintenance & Service Manual...
  • Page 94 ARM HARNESS WILL ONLY SUPPLY ONE ARM (ROCKER SWITCH) Re-assemble back cover insert and lower back cover by securing in position with the 8 screws removed previously. SECURE IN POSITION WITH 8 SCREWS SEAT TO NEW REVISION ACORN 80 Maintenance & Service Manual...

  • Page 95: Technical Drawings

    APPENDIX 10 Rationalisation Procedures 10.9 Technical Drawings 10.9.1 530 Powered Swivel L/H Seat Spacer Complete ACORN 80 Maintenance & Service Manual...
  • Page 96 APPENDIX 10 Rationalisation Procedures 10.9.2 550 Powered Swivel L/H Seat Spacer Complete ACORN 80 Maintenance & Service Manual...
  • Page 97 APPENDIX 10 Rationalisation Procedures 10.9.3 580 Powered Swivel L/H Seat Spacer Complete ACORN 80 Maintenance & Service Manual...
  • Page 98 APPENDIX 10 Rationalisation Procedures 10.9.4 530 Powered Swivel R/H Seat Spacer Complete ACORN 80 Maintenance & Service Manual...
  • Page 99 APPENDIX 10 Rationalisation Procedures 10.9.5 550 Powered Swivel R/H Seat Spacer Complete ACORN 80 Maintenance & Service Manual...
  • Page 100 APPENDIX 10 Rationalisation Procedures 10.9.6 580 Powered Swivel R/H Seat Spacer Complete ACORN 80 Maintenance & Service Manual...
  • Page 101 APPENDIX 10 Rationalisation Procedures 10.9.1 Carriage Front Cover Assembly ACORN 80 Maintenance & Service Manual...
  • Page 102 1020794 and secure with 2 x 1040250 and 2 x 104CT24 torqued to 22Nm using Loctite 270. 104CT24 TORQUE 22Nm AND APPLY LOCTITE 270 NOTE USE CABLE CLAMP TO SECURE THE WIRE ROUTING ACORN 80 Maintenance & Service Manual...
  • Page 103 Rotate the seat base and the following should be seen on the display whilst the call is activated. If this does not happen then loosen and adjust the plastic cover until the position of the switch is correct. IF IN DOUBT, PLEASE ASK FOR ASSISTANCE ACORN 80 Maintenance & Service Manual...
  • Page 104 1 off Seat Spacer RH 1121285 2 off M8 x 20 Soc CSK 104CT24 4 off M8 x 30 Soc CSK 901045 2 off M8 x 10 Soc Butt Hd 1040250 1 off Self Adhesive Cable Clamp 900030 ACORN 80 Maintenance & Service Manual...
  • Page 105 Trim cover as shown - note this is for retro-fit kit only and not for normal production. TRIM AS SHOWN Assemble complete as shown - note swivel harness should already be present on-site. TORQUE BOLTS 104CT24 TO 22Nm AND SECURE USING LOCTITE 270 1040250 ASSEMBLE CABLE CLAMP 900030 901045 ACORN 80 Maintenance & Service Manual...
  • Page 106 APPENDIX 11 Notes ACORN 80 Maintenance & Service Manual...
  • Page 107 APPENDIX 11 Notes ACORN 80 Maintenance & Service Manual...
  • Page 108 Thank you for choosing Acorn. You can rest assured that your stairlift will provide many years of reliable service and allow you to enjoy the full use of your home. Your stairlift is covered by a manufacturer’s warranty for 12 months that covers the cost of replacement parts.

Table of Contents

Save PDF