Numatic
Overheating of Electrical or Hydraulic Components in Handle
Handle or wand becomes unusually hot during extended use.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
High resistance connection in handle switch, Restricted solution flow causing friction heating, Damaged wiring causing localised heating, Continuous high-duty operation beyond rating
How to Fix / Troubleshooting
Safety first: Unplug the machine and allow the handle to cool before opening it.
- Inspect wiring: Open the handle and check for discoloured or melted insulation around connectors and switches.
- Tighten connections: Ensure all screw terminals and spade connectors are tight.
- Check solution line: Verify that the solution hose inside the handle is not kinked or pinched.
- Replace damaged parts: Any burnt switch or wiring should be replaced with the correct Numatic components.
- Adjust usage: Avoid running the pump continuously without moving the tool, which can increase heat.
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Repair Difficulty
Medium
3/5
Required Part
Handle Wiring Loom and Switch
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