Troubleshooting - Pentair Hydromatic SPD50H Manuel D'utilisation

TROUBLESHOOTING

PUMP DOES NOT RUN OR HUM
1. Line circuit breaker may be off, or fuse, if used, may be
blown or loose.
2. Water level in sump may be too low. Run in more water.
3. Pump cord plug may not be making contact in receptacle.
4. If pump is using the series cord plug, the two plugs may not
be plugged tightly together.
5. Float may be stuck. Be sure float operates freely in basin.
6. If all symptoms check OK, motor winding may be open; take
to service center for check.
PUMP RUNS BUT DOES NOT DELIVER WATER
1. Check valve may be installed backward. Arrow in valve
points in direction of flow.
2. Discharge gate valve, if used, may be closed.
3. Pump may be air locked. Start and stop several times by
plugging and unplugging cord. Check vent hole in pump
case for plugging.
4. Pump head may be too high. Pump cannot deliver water
over (SPD50H) 50' or (SPD100H) 64' vertical. Pump must be
sized to operating conditions.
5. Inlet in pump base may be clogged. Remove pump and clean
out openings.
6. Impeller or volute openings may be plugged or partially
plugged. Remove pump and clean per maintenance
instructions.
PUMP RUNS AND PUMPS OUT SUMP BUT DOES NOT STOP.
1. Float is stuck in up position. Be sure float operates freely in
basin. Diaphragm vent tube in power cord may be blocked
or bent. Clear obstruction.
PUMP RUNS BUT DELIVERS ONLY SMALL AMOUNT OF WATER.
1. Pump may be air locked. Start and stop several times by
plugging and unplugging cord. Check vent hole in pump
case for plugging.
2. Pump head may be too high. Pump cannot deliver water
over (SPD50H) 50' or (SPD100H) 64' vertical. Horizontal
distance does not affect pumping, except loss due to
friction.
3. Inlet in pump base may be clogged. Remove pump and clean
out openings.
4. Impeller or volute openings may be plugged or partially
plugged. Remove pump and clean per maintenance
instructions.
5. Pump impeller may be partially clogged causing motor to
run slow, resulting in motor overload.
W-03-193 (10-15-22)
FUSE BLOWS OR CIRCUIT BREAKER TRIPS WHEN PUMP STARTS.
1. Inlet in pump base may be clogged. Remove pump and clean
out openings.
2. Impeller or volute openings may be plugged or partially
plugged. Remove pump and clean per maintenance
instructions.
3. Pump impeller may be partially clogged causing motor to
run slow, resulting in motor overload.
4. Fuse size or circuit breaker is too small.
5. Defective motor stator: return to authorized service center.
MOTOR RUNS FOR SHORT TIME, STOPS, THEN AFTER SHORT
PERIOD STARTS AGAIN. INDICATES TRIPPING OVERLOAD
CAUSED BY SYMPTOM SHOWN.
1. Inlet in pump base may be clogged. Remove pump and clean
out openings.
2. Impeller or volute openings may be plugged or partially
plugged. Remove pump and clean per maintenance
instructions.
3. Pump impeller may be partially clogged causing motor to
run slow, resulting in motor overload.
4. Defective motor stator; return to service center.
If symptom is not found on chart, call authorized distributor or
repair center for assistance.
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