Overhaul; Trouble Shooting - VARISCO K Serie Instrucciones Para El Uso Y La Manutención

clearance.
Replace or repair as necessary. Recommended clearance is 0.5mm to 0.9mm.
8.3

OVERHAUL

Pumps requiring overhaul should be repaired by an authorized VARISCO service workshop.
Normal overhaul includes
· Disassembling and cleaning of pump.
· Inspection and overhaul of each component.
· Electrical testing of submersible motor.
· Replacement of worn-out/ or damage parts.
· Reassembly.
· Performance test and Functional test.
· Painting and Packing
9.

TROUBLE SHOOTING

SYMPTOM
Pump does not start or stops
immediately after starting.
Pump starts but stops after a
short period of operation
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ENGLISH
K
1. Power Failure
2. Incorrect voltage.
3. Significant voltage drop
4. Motor phase malfunction
5. Electric circuit connection
fault
6. Faulty control circuit
connection
7. Blown fuse
8. Faulty magnetic switch
9. Short circuit & breaker is
functioning
10. Foreign matter clogging
pump
11. Motor burnt out
12. Damaged motor bearings
1. Prolonged dry operation
has activated motor
protection.
2. High liquid temperature
has activated motor
protector.
CAUSE REMEDY
1-3) Contact electric power
company
4. Inspect motor & connec-
tions
5. Check electric circuit
6. Correct wiring
7. Replace with correct fuse
type
8. Replace with correct type
of magnetic switch
9. Locate short circuit and
repair
10. Remove foreign matter
11. Rewind Motor
12. Replace bearings
1. Adjust (raise) the pump
stop water level so that
the motor remains
partially covered during
operation
2. Lower liquid temperature
21