14
PN524 (08-01-20)
WARNING
Hazardous voltage. Can shock, burn, or kill.
When troubleshooting or servicing pump, use all normal
precautions for the voltages involved.
1. Disconnect power unless required for testing.
2. Have electrical testing done by a qualified electrician.
3. Most problems occur above ground. Remove pump from
well only as a last resort.
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
REMEDY
Fuses blow or overload
circuit breaker trips when
motor starts:
1. Pump sandlocked.
2. Low or high voltage.
3. Cable damaged or shorted.
4. Pump forced into crooked well.
1. a) Check motor winding resistance - see
“Circuit (Winding) Resistance”, Page 6.
b) If motor is not shorted, turn on current
and rap discharge pipe sharply to loosen sand.
c) Pull pump and clean.
2. Check line voltage (see Page 4). If high or low, contact
power company.
3. Check pump cable for ground (see Page 6).
4. Forcing pump into a crooked hole will cause
misalignment of pump and motor. Consult well driller.
Fuses blow or overload
trips while motor is running:
1. Low or high voltage.
2. Water contains abrasives.
3. Motor or cable shorted and/or
grounded.
1. Check voltage on service lines (see Page 4).
2. If water contains excessive sand, remove pump and
clean sand out of well.
3. See “Circuit (Winding) Resistance Test” and “Ground
Check”, Page 6.
Motor does not start but does not
blow fuses or trip circuit breaker:
1. Fuses blown or circuit breaker tripped.
2. Voltage does not reach terminals.
3. Loose wire in control box.
4. Defective magnetic controller coil.
1. Reset circuit breakers or replace fuses.
2. 3-Phase: Check voltage at controller between wire
pairs: L1 – L3, L3 – L2, L2 – L1.
Single Phase: Check voltage between L1 and L2 on
box terminal strip.
3. Check and tighten all wires.
4. Check starter and coil.
Pump does not shut off:
1. Cable leads improperly connected.
1. Check wiring diagram on box cover for correct
connections.
Motor runs, but delivers
little or no water:
1. Horizontal line check valve installed
backwards.
2. Motor running backwards
(3-Phase only).
3. Pump gaslocked.
4. Water level in well has dropped.
5. Leak in discharge pipe.
6. Coupling between motor shaft
and pump shaft broken.
7. Pump parts worn from abrasives.
8. Intake screen clogged.
9. Pump set below recommended
depth.
10.Discharge pipe friction reduces
output.
1. Reinstall correctly.
2. Reconnect motor for proper rotation (see Page 3).
3. Start and stop pump several times allowing one
minute between stops and starts.
4. a) Restrict pump flow to equal well production.
b) Install liquid level control.
c) Reset pump lower in well.
5. Raise pipe until leak is found.
6. Remove pump from well and check coupling.
If broken, call Berkeley Pumps.
7. a) Check pump shut-off pressure. Pressure should
be at least 90% of pressure at installation.
b) Call Berkeley Pumps.
8. Remove pump from well and clean screen.
9. a) Reduce pressure switch setting until pump will
shut off.
b) Install pump producing higher pressure.
10. Install larger pipe or pump producing higher pressure.