Ligao JLM-S, Instruction Manual, Page: 37 / 44

34

Re-install the check valve components (reverse
position of disassembly).

Reconnect to the pump head and the piping system.
6
Troubleshooting
Problem Possible Cause Solution
Pump Not
Start
Power supply fault. Check the power.
Fuse blown. Eliminate overload, replace the fuse.
Power circuit.
Find the location of the circuit and
handle it.
Wiring error. Check the wiring diagram.
Pipeline, pump cavity
blockage. Check the pipe, pump cavity, and
check valves, clean the dirt.
Wrong setting. Check the setting.
No Output
Pump not run. Check power and setting.
Solution tank is empty. Fill the solution tank.
Pipeline block. Clean the pipeline.
Shut-Off valve closed. Open the valves.
The ball check valve is
blocked by particles.
Check and flush the check valves.