TROUBLE-SHOOTING
(CONTINUED)
PUMP DOES NOT RUN OR HUMS.
1. Line circuit breaker may be off, tripped or loose. Have certified electrician check fuse or breaker.
2. Water level in pit may be too low to activate switch. Add more water to pit.
3. Plug on power cord may not be making contact in receptacle. Check security and connection.
4. If the pump is using the series (piggyback) cord plug, the plugs may not be connected tightly together.
5. Float may be obstructed. Make sure float is free and not interfering with the pit wall or other obstruction.
6. If all symptoms check OK, the motor winding may be open. Consult factory.
PUMP RUNS OR HUMS BUT DOES NOT DELIVER WATER.
1. Check valve may be installed backwards or is defective. Check to make sure it is installed properly and flapper in
valve is free to move.
2. Discharge line may be blocked or frozen. Check to see if line passes through cold areas or is blocked.
3. Vertical lift may be beyond pumps capability. See chart below for your pump’s maximum lift capability.
NOTE: At the pump’s maximum lift there will be no flow.
4. Check to see if inlet screen of pump is plugged or the impeller is jammed. Clean inlet and impeller as needed.
5. Pump Impeller may be jammed. Check for foreign material such as construction debris, stones, etc. that might be
preventing the impeller from rotating. Reminder: Make sure pump is disconnected from power source before checking
inlet and impeller area.
PUMP RUNS AND REMOVES WATER BUT DOES NOT SHUT OFF.
1. Float is stuck in the “on” position. Check to make sure the float is free to move up and down without obstruction.
2. Switch may be defective. Consult factory.
PUMP RUNS BUT DELIVERS VERY LITTLE WATER.
1. Vertical lift is approaching the pump’s maximum lift capability. Refer to the above maximum lift chart.
2. Pump’s inlet is partially blocked. Check to make sure the inlet is clear of debris.
3. Discharge line is partially blocked. Check line for blockage.
4. Check valve is not opening all the way. Check for defective, reversed, or blocked check valve.
CIRCUIT BREAKER TRIPS OR FUSE BLOWS WHEN PUMP STARTS.
1. Fuse or breaker size is too small.
2. Other major appliances are on the same circuit. Pump should be on its own circuit.
3. Pump is connected to an extension cord or wiring is inadequate. Have an electrician check for proper wiring.
4. Motor or switch may be defective. Consult factory.
PUMP CYCLES TOO OFTEN OR RUNS CONSTANTLY
1. Check Valve may have failed causing discharged water to return to the sump pit. Cycle pump and look for water
rushing back through the pump inlet. Replace Check Valve as necessary.
2. Pump May be sized incorrectly. Check with your local plumber for recommendation.
3. Pump Inlet may be blocked. Unplug pump from power source and clean inlet.
Summary of Contents for JP250V
Page 1: ... JP233V ...
