Power Fist 8102048 Manuel Du Propriétaire page 5

Troubleshooting
Problem
The pump cannot pump
The water flow is too low
Power consumption too large Total head is too high
Sudden loss of flow
Vibration or noise
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Cause
Not enough water to prime
Inlet pipe leakage
Pump speed is too low
The filter is obstructed
The pump's capacity is exceeded
The seal was abraised and leaks air
The filter, pipeline or impeller is choked
The speed is low
Impeller or seal is worn
Inlet pipe leakage
Impeller damage and leakage
There is air in the pump or inlet, air leak into
the seal
Speed of engine is not stable
There is friction between impeller and flow
guide
The impeller is obstructed by foreign objects Check and clean up
The inlet pipe connector is loose or leaking
Suction head is too high
Suction head is too high
Output of water is too large
Inlet pipe is obstructed by foreign body so
the resistance is too large
Rotary part is loose
Pump mounting is unstable
There is air built up in the pump or pipeline
Impeller damage
Solution
Add more water to the pump
Check inlet pipe and pipe connection.
Change pipe or tighten.
Check speed and find cause for remedy.
Check and clean up
Check position of installation
Change the machinery seal
Clean the obstruction
Increase speed
Adjust the gap or change impeller and
machinery seal
Check inlet pipe and pipe connection,
change the pipe or tighten.
Replace impeller.
Check reason and adjust
Unscrew air drain screw cock, and eliminate
the air. Check the pipeline or change
machinery seal
Adjust the speed of engine
Listen and see if the impeller is contacting
the case, and adjust accordingly
Check the inlet pipeline and remedy
Check suction head and lower the position
of pump
Check suction head and lower the position
of pump
Decrease the output of water
Check inlet pipe and filter net to clean up
Listen carefully and inspect the part that
causes the noise. Stop the machine to adjust
Stop the machine, check and adjust
Unscrew the drain cock and expel the air
Stop the machine. Check and replace the
impeller.