Publicité
Les langues disponibles
Les langues disponibles
OPERATING AND MAINTENANCE MANUAL
CENTRIFUGAL ELECTRIC PUMP INOX SERIES
10. PROBLEM SOLVING
PROBLEMS
POSSIBLE REASONS
Engine won't start
1. No power.
2. Pump phase is lost. 3.
3. Voltage overload.
4. Capacitor damaged.
5. Connection error.
6. Damaged motor.
Insufficient flow
1. Operating pressure too high.
2. Clogged inlet.
3. Impeller wear.
4. Possible air gap in pump casing.
The electric pump
1. Circuit breaker disconnected or fuse blown.
stops suddenly.
2. Clogged impeller.
3. Stator winding burnt out.
Stator winding burnt out
1. The electric pump runs too long with an
incorrect phase.
2. Winding rotation short-circuit or short-circuit
between phases due to broken mechanical seal.
3. Clogged impeller.
4. Electrical pump starts and stops frequently.
5. Electric pump runs on overload.
Pump runs but does not
1. Suction is blocked.
pump out water
2. Foot valve or check valve is closed.
3. Constriction in the suction line.
4. Air in the pump or in the suction line.
When the power is
1. Narrowing in the suction pipe..
cut off, the pump runs
2. Failure of foot valve or check valve.
backwards.
3. Expired foot valve.
4. Bubble in suction line.
Pump makes noise and
1. Narrowing in the suction line.
vibrates
2. Suction pipe is small or blocked.
3. Air in pump or suction pipe.
4. Ratio between device head and pump head
too low.
5. Wear of mechanical parts.
www.proindecsa.com / proindecsa@proindecsa.com
SOLUTION
1. Check current.
2. Replace fuse.
3. Check voltage.
4. Replace capacitor.
5. Check connection.
6. Repair motor.
1. Use within the rated pressure range.
2. Clean water inlet.
3. Replace impeller.
4. Purge suction and pipe body.
1. Check circuit breaker and fuse.
2. Check and clean impeller.
3. Rewind and check.
1. Check mains phases.
2. Check winding and replace mechanical seal.
3. Check and clean impeller.
4. Check working range of pump.
5. Check mains voltage.
1. Check and clean the suction of the pump.
2. Check foot and check valves
3. Check suction pipe section.
4. Prime pump and suction pipe.
1. Check the suction pipe.
2. Check and repair or replace valves.
3. Check valve.
4. Bleed suction line.
1. Check suction line.
2. Improve or repair the suction pipe.
3. Fill with liquid and remove air.
4. Upgrade the system or select another duty point
according to the pump rating.
5. Repair the pump.
11
Publicité
