Troubleshooting; Hoist Doesn't Turn On - Mackworth TX440 Advanced PT Service Manual

8.0 Troubleshooting

Should a problem arise with the use of the Hoist, this section offers guidance to all known faults
revolving the product. The list of faults below offers the correct actions in sequence to resolve the
issue.
For each step per scenario, if the step does not determine the issue, continue to the following step
in sequence until the fault is found. Once the fault is found, refer to the action guide with the
corresponding number to resolve the issue. After following the correct action, check that the Hoist is
now functioning correctly, and perform a simple test. See Section 4.0 for correct test procedure.
For guidance on how to dismantle the Hoist to perform troubleshooting actions, see section 9.0 –
Servicing.
If the fault is not found and/or the solutions do not correct the problem, contact your local
Mackworth authorized dealer immediately.

Hoist doesn't turn on

Operate the handset to determine if the Hoist powers up. If it does not – Follow the Troubleshooting
guide below.
Troubleshooting Guide
1. Check the Handset is correctly connected to the Air Grommet.
2. Check the Handset air tube is not damaged, e.g. cuts and holes.
3. Check the E-Lower Cord has not been used, this will leave the toggle switch in OFF mode.
4. Doc the Hoist into the Charger to see if the Hoist begins to Charge, it is possible the Hoist is
out of battery.
5. Check the Battery Lead connection points are connected properly, from battery to PCB.
6. Check for any damage to the battery leads, e.g. cuts and breaks.
7. Check to see if the Fuse on the Battery Lead has blown.
8. Check the Limit Switch Wires for any damage, cuts and breaks. For thorough inspection,
removal is recommended. See section 9.7 for guidance.
9. Perform a visual check on the PCB for any damage, e.g. blown components.
10. Using a Battery Tester, check that both Batteries are providing around 12V to the PCB.
11. Replace current PCB.
12. Replace current Limit Switch Block.
13. Replace current Toggle Switch.
Action Guide
1. Re-attach the Handset to the Air Grommet – See User Manual on Handset attachment.
2. Remove the Handset from the Hoist and Replace – See User Manual on Handset attachment.
3. Press the red tab vertically to switch the toggle switch from OFF to ON.
4. If Hoist LED flashes orange, use Handset to attempt to turn on Hoist. If unsuccessful,
continue Troubleshooting Guide and refer to the section on "Hoist not Charging" as this is
likely the guide to resolve the issue. If Hoist turns on, allow the Hoist to charge before
testing. If Hoist does show signs of charging but does not turn on, continue this
Troubleshooting Guide.
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