Flint & Walling CPJS Shallow Well - Manual (Page 23)

23
TROUBLESHOOTING
Problem Possible Cause Corrective Action
Little or no
discharge
1. Casing not initially filled with water 1. Fill pump casing
2. Suction lift too high, or too long 2. Move pump closer to water source
3. Hole or air leak in suction line 3. Repair or replace. Use pipe tape and pipe
sealing compound
4. Foot valve too small 4. Match foot valve to piping or install one size
larger foot valve.
5. Foot valve or suction line not submerged deep
enough in water
5. Submerge lower in water
6. Motor wired incorrectly 6. Check wiring diagram
7. Casing gasket leaking 7. Replace
8. Suction or discharge line valves closed 8. Open
Pump will not
deliver water or
develop pressure
1. No priming water in casing 1. Fill pump casing
2. Leak in suction line 2. Repair or replace
3. Discharge line is closed and priming air has
nowhere to go
3. Open ball valve
4. Suction line (or valve) is closed 4. Open
5. Foot valve is leaking 5. Replace foot valve
6. Suction screen clogged 6. Clean or replace
Loss of suction 1. Air leak in suction line 1. Repair or replace
2. Suction lift too high 2. Lower suction lift, install foot valve and prime
3. Insufficient inlet pressure or suction head 3. Increase inlet pressure by adding more water
to tank or increasing back pressure
4. Clogged foot valve or strainer 4. Unclog
Pump vibrates
and/or makes
excessive noise
1. Mounting plate or foundation not rigid enough 1. Reinforce
2. Foreign material in pump
2. Disassemble pump and clean
3. Impeller damaged 3. Replace
4. Worn motor bearings 4. Replace
Pump will not start
or run
1. Improperly wired 1. Check wiring diagram on motor
2. Blown fuse or open circuit breaker 2. Replace fuse or close circuit breaker
3. Loose or broken wiring 3. Tighten connections, replace broken wiring
4. Stone or foreign object lodged in impeller 4. Disassemble pump and remove foreign object
5. Motor shorted out 5. Replace
6. Thermal overload has opened circuit 6. Allow unit to cool, restart after reason for
overload has been determined