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Mackworth SA400 Service Manual

Stand aid
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SA400 Stand Aid
Service Manual
Doc. No. 995565
Revision of document: A
Rev Date: 26.04.2021

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Summary of Contents for Mackworth SA400

  • Page 1 SA400 Stand Aid Service Manual Doc. No. 995565 Revision of document: A Rev Date: 26.04.2021...

  • Page 2: Table Of Contents

    Contents 1.0 – Introduction ..................................3 2.0 – Safety Precautions ................................3 3.0 – Servicing .................................... 4 4.0 – Test Procedure .................................. 6 5.0 – Tools, Equipment and Lubricants Required for Servicing....................7 6.0 – Decommissioning ................................8 7.0 – Spare Parts List .................................. 9 8.0 –...

  • Page 3: Introduction

    This Manual will explain how to carry out interim servicing and parts replacement on the Mackworth SA400 Stand Aid safely and effectively. This document is divided into sections to help a Service Engineer find the correct information. Each section will show in a step by step fashion the correct way to disassemble and assemble the Stand Aid.

  • Page 4: Servicing

    3.0 – Servicing To be completed by Approved Service Engineer Maintenance should be completed by an approved service engineer every 6 months to ensure the products required standard is maintained. The service history of the product should be documented each service. When Servicing the Stand Aid, ensure to fill out the Service Log which is located in the back of the User Manual.
  • Page 5 Handset and Cables: Inspect the components for damage that may affect the function and safety of the product. Ensure all Cables are fitted to the Control Box correctly. Verify all Handset functions are in working order. Ensure LED’s are working correctly. Knee Pad: Inspect the Knee Pad for damage including cuts and breaks.

  • Page 6: Test Procedure

    4.0 – Test Procedure Below is the full testing procedure required to complete an Annual Stand Aid Service. The SWL 180Kg (400lb) is an essential load for the testing of the Stand Aid and a mode of transportation to transport the weights to the hoist is required. 1.

  • Page 7: Tools, Equipment And Lubricants Required For Servicing

    5.0 – Tools, Equipment and Lubricants Required for Servicing When carrying out work on the Mackworth SA400 Stand Aid you will require the following: Tools Required 3mm Allen Key 4mm Allen Key x2 5mm Allen Key x2 6mm Allen Key x2...

  • Page 8: Decommissioning

    6.0 – Decommissioning When the Stand Aid has completed its life cycle and can no longer perform to its intended use safely the Stand Aid must be decommissioned by an approved Service Engineer. The following specifies the importance of correct disposal procedure including local laws and being environmentally friendly. Please observe the local laws on recycling and respect the current laws for disposal within the community the device is being used within.

  • Page 9: Spare Parts List

    Battery Pack (2.9 Ah Lead Acid) 510091 Mains Snap Lead 510097 Charger Lead (US Plug) 520034 Lift Actuator Lead (700mm) 119105 Leg Actuator Lead 999565 Mackworth SA400 User Manual 992565 Mackworth SA400 Spare Parts Manual 995565 – Revision A Page 9 of 38...

  • Page 10: Troubleshooting

    Servicing. If the fault is not found and/or the solutions do not correct the problem, contact your local Mackworth authorized dealer immediately – contact details are provided on the last page of this manual. 8.1 – Stand Aid doesn’t turn on Operate the handset to determine if the Stand Aid powers up.

  • Page 11: Stand Aid Doesn't Charge

    8.2 – Stand Aid doesn’t charge Connect the Stand Aid charging lead from the Hoist to the Wall Socket. (Ensuring that the lead is connected properly) to determine if the Stand Aid charges. If the control box LED does not illuminate a steady orange, follow the Troubleshooting Guide below.

  • Page 12: Stand Aid Doesn't Lift Load Correctly - Stop/Start Action

    Action Guide 1. Remove the Stand Aid from charge. 2. Connect the Lift Actuator Cable correctly. See section 9.2.2 for guidance. 3. Replace the Cable. See Section 9.2.2 for guidance. 4. Replace the Lift Actuator. See Section 9.5 for guidance. 5.

  • Page 13: Stand Aid Leg Actuator Is Not Responding

    8.7 – Stand Aid Leg Actuator is not responding Using the Handset, the Stand Aid Lifting/Lowering function is working but the Powered Leg does not respond to commands. Follow the Troubleshooting Guide below. Troubleshooting Guide 1. Check Cable between the Control Box and the Leg Actuator is connected correctly. 2.

  • Page 14: Stand Aid Doesn't Respond To The Correct Handset Commands

    5. Remove the Lift Actuator and Leg Actuator from the Hoist and Replace – See section 9.2.2 and 9.2.3 for guidance. 6. Replace the Control Box. See section 9.3 for guidance. 7. See section 9.2.1 for guidance on Handset attachment. Note: Bear in mind this error could be to a specific button on the handset while the other buttons still function.

  • Page 15: Servicing - Removal And Replacement

    Stand Aid. The step by step process is to be followed in sequence to perform a successful service on the Stand Aid. Unless stated otherwise, all images refer to a Mackworth SA400. NOTE: Before carrying out any work on a Mackworth SA400 Stand Aid, remember to remove the charger lead and remove any external power source.

  • Page 16: Cables

    Refitting / Replacement Step 3 – Refitting is a reversal of the removal process noting the following points: A) Reposition the Battery above the Control Box – Push the Battery inward and the Battery will “click” into place. 9.2 – Cables In this section it will explain the correct procedure on removing/ refitting the Cables for servicing procedures or replacement.

  • Page 17: Cable - Lift Actuator

    9.2.2 – Cable – Lift Actuator Removal Step 1 – Remove the Jack End of the Cable which ports the Control Box by pulling downward. (This is the middle Control Box Port as shown in the image) Step 2 – Release the cable from the Actuator by turning the lock manually as shown. Step 3 –...

  • Page 18: Cable - Leg Actuator

    Step 4 - Remove the cable from any clips that are routing it along the Mast. Refitting / Replacement Step 5 - Refitting is a reversal of the removal process noting the following points: A) When fitting the Cable into the Actuator port, ensure the locator aligns with the locator inside the actuator port.

  • Page 19: Cable - Charger

    Step 4 – Remove the cable from any clips/cable ties that are routing it along the Stand Aid. Refitting / Replacement Step 5 - Refitting is a reversal of the removal process noting the following points: A) When fitting the Cable into the Actuator port, ensure the locator aligns correctly for correct connection to the Leg Actuator.

  • Page 20: Control Box

    9.3 – Control Box In this section it will explain the correct procedure on removing and reinstalling the Control Box for servicing procedures or replacement. Removal Step 1 – Remove Battery from the Stand Aid. (Refer to section 9.1) Step 2 – Remove all the Cabling/leads from the Control Box. (Refer to section 9.2) Step 3 –...

  • Page 21: Attachment Bracket

    9.4 – Attachment Bracket In this section it will explain the correct procedure on removing and reinstalling the Attachment Bracket for servicing procedures or replacement. Removal Step 1 – Remove the Battery (refer to section 9.1) Step 2 – Remove the Cables/Leads from the Control Box (refer to section 9.2) Step 3 –...

  • Page 22: Lift Actuator

    9.5 – Lift Actuator In this section it will explain the correct procedure on removing and reinstalling the Lift Actuator for servicing procedures or replacement. Removal Step 1 – Remove the Lift Actuator Cable. (See section 9.2.2) Step 2 – Using two 4mm Allen Keys, remove one of the screws and washer from the pin at the Top Actuator fixing point.
  • Page 23 Step 5 – Pull the Pin out from the bottom fixing to release the Actuator. Step 6 – Remove the Actuator and rest the Upper Assembly on the Stand Aid. Refitting / Replacement Step 7 - Refitting is a reversal of the removal process noting the following point: A) Ensure the Actuator is fitted in the correct orientation.

  • Page 24: Upper Assembly

    9.6 – Upper Assembly Within this section it will explain the correct procedure on removing and reinstalling the Upper Assembly for servicing procedures or replacement. Removal Step 1 – Remove the Lift Actuator Cable. (See section 9.2.2) Step 2 – Remove the Lift Actuator. (See section 9.5) Step 3 –...
  • Page 25 Step 6 – The Upper Assembly can now be removed. Refitting / Replacement Step 7 - Refitting is a reversal of the removal process noting the following point: A) Ensure the threaded boss is placed within the Upper Assembly when fitting. B) Ensure Loctite 243 is applied to both bolts when fixing the Upper Assembly.

  • Page 26: Leg Rod Assembly

    9.7 – Leg Rod Assembly Within this section it will explain the correct procedure on removing and reinstalling the Manual Leg Rods for servicing procedures or replacement. Removal Step 1 – Remove the Foot Tray from the Base. (Refer to section 9.12) Step 2 - Place the Stand Aid on its side for easier service.

  • Page 27: Leg Actuator Assembly

    9.8 – Leg Actuator Assembly Within this section it will explain the correct procedure on removing and reinstalling the Manual Leg Rods for servicing procedures or replacement. Removal Step 1 – Remove the Foot Tray from the Base. (Refer to section 9.12) Step 2 - Place the Stand Aid on its side for easier service.
  • Page 28 Step 7 – To remove the Actuator from the Pivot Plate, use a 6mm Allen Key and 17mm Spanner to remove the nut and washer shown. Step 8 – To remove the Pivot Plate and Actuator, unscrew the bolt as shown, and grab the Spacer.

  • Page 29: Front Castor

    B) Ensure all parts are placed in the correct order when attaching the Leg Pivot Plate, this includes: Bolt, Spacer, Black Washer, White Washer, Leg Pivot Plate, and White Washer. C) Apply Loctite 243 to the Leg Pivot Plate Bolt. D) Ensure the washer is included between the Nut and Actuator when attaching the Actuator to the Base Pivot Point.

  • Page 30: Rear Castor

    9.10 – Rear Castor Within this section it will explain the correct procedure on removing and reinstalling the Rear Castor for servicing procedures or replacement. Removal Step 1 – Remove the Foot Tray from the Base. (Refer to section 9.12) Step 2 - Place the Stand Aid in its side for easier service –...

  • Page 31: Leg - (Lh Leg And Rh Leg)

    9.11 – Leg – (LH Leg and RH Leg) Within this section it will explain the correct procedure on removing and reinstalling the legs of the hoist, images refer to one leg only but same applies to both. Removal Step 1 – Remove the Foot Tray from the Base. (Refer to section 9.12) Step 2 - Place the Stand Aid in its side for easier service –...

  • Page 32: Foot Tray

    9.12 – Foot Tray Within this section it will explain the correct procedure on removing and reinstalling the Foot Tray for servicing procedures or replacement. Removal Step 1 – Foot Tray is attached to the Base by the Pins circled in the image below. (Where applicable, use circlip pliers to remove the retaining circlips) Step 2 –...

  • Page 33: Knee Pad

    9.13 – Knee Pad Within this section it will explain the correct procedure on removing and reinstalling the Knee Pad for servicing procedures or replacement. Removal Step 1 – Using two 17mm Spanners, remove a nut from either side of the Knee Pad Attachment Bar.
  • Page 34 Step 4 – Pull the Index Plunger outward to fully remove the Inner Knee Pad Pivot Assembly. Step 5 – Use a 6mm Allen Key to remove the bolt securing the Outer Knee Pad Pivot Assembly. Grab the Spacer while removing the Bolt Step 6 –...
  • Page 35 C) Align the Second Plunger with the users preferred hole position shown below. D) When reattaching the Knee Pad to the Threaded Bar, ensure the Washers are fitted in the correct positions. Nut, washer, nylon washer, Knee Pad, nylon washer, Inner Knee Pad Pivot Assembly, nylon washer, Knee Pad, nylon washer, washer, nut.

  • Page 36: Base

    9.14 – Base Within this section it will explain the correct procedure on removing and reinstalling the Base for servicing procedures or replacement. Removal Step 1 – Remove the Leg Actuator Cable. (See section 9.2.3) Step 2 - To detach the Mast and Upper Assembly from the Base the Two Star Knobs shown must be removed.

  • Page 37: Mast

    9.15 – Mast Within this section it will explain the correct procedure on removing and reinstalling the Mast for servicing procedures or replacement. Removal Step 1 – Remove the Battery from the Stand Aid. (See section 9.1) Step 2 – Remove all Cables from the Control Box. (See section 9.2) Step 3 –...
  • Page 38 While every effort has been made to ensure the accuracy of information contained in this assembly and installation manual, no liability can be accepted by Mackworth for any errors or omissions. Mackworth operates a policy of continuous improvement. Specifications and other data are subject to change without notice.

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