Great Plains Industries GPRO PRO25-024 Series Manual del usuario - Página 5
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Imprimir páginaa soft-bristled brush and solvent. If the strainer is very
dirty, compressed air may be used. If damaged, replace
the strainer.
Replace components making sure that they are seated
and fasteners are tightened securely.
REPAIR
Carefully inspect all parts for wear or damage. Replace
components, as necessary. The Illustrated Parts List
gives information on replacement parts and kits.
Review the Safety Instructions before proceeding.
SYMPTOM
A MOTOR DOES NOT RUN
B. MOTOR RUNS,
BUT NO FLOW
C. PUMP FAILS TO PRIME
D. LOW FLOWRATE
E. MOTOR STALLS WHEN
NOZZLE IS CLOSED
F. FUEL LEAKAGE
TROUBLESHOOTING
PROBABLE CAUSE
1. Wiring problem
2. Fuse blown
3. Rotor or vanes jammed
4. Circuit breaker switch defective
5. Motor bad
1. Tank level low
2. Clogged filter assembly
3. Suction line problem
4. Broken motor shaft key
5. Bypass poppet stuck open
6. Motor running backwards
1. Air leak in system
2. Bypass poppet stuck open
3. Vanes worn or sticking
4. Motor runs backwards
1. Low voltage
2. Wiring problem
3. Clogged filter assembly
4. Air leak in system
5. Bypass poppet stuck open
6. Vanes worn or sticking
7. Outlet is blocked
8. Clogged or broken suction pipe Remove pump and clear suction pipe, replace as needed.
9. Fuel level low
10. Using off-the-shelf automatic
nozzle
11. Hose damaged
1. Bypass poppet stuck closed
2. Rotor or vanes worn
3. Low voltage
4. Motor defective
1. Threaded joints loose
2. Insufficient bolt torque
3. Lost or damaged O-rings
4. Shaft seal worn or damaged
5. Hose damaged
WARNING
Observe precautions against electrical shock when servicing the
pump. Always disconnect power before repairing or servicing.
Never apply electrical power to the system when any of the cov-
erplates are removed.
CAUTION
Avoid prolonged skin contact with petroleum fuels. Use protective
goggles, gloves and aprons in case of splashing or spills. Change
saturated clothing and wash skin promptly with soap and water.
CORRECTIVE ACTION
Confirm all connections are tight and correct voltage is getting to the pump.
Inspect fuse in fuse holder on power cord. If blown, replace.
Remove coverplate to expose rotor. Remove any obstructions. Check for
excessive vane and slot wear. If damaged, replace.
Replace switch
Contact the factory.
Add fuel to tank.
Remove and clean filter assembly or replace.
Remove suction pipe and remove any obstructions.
Replace shaft key in end of shaft. Check slot and vane for excessive wear.
Remove any obstructions.
Remove bypass poppet and clean. If damaged, replace.
Check wiring to confirm correct polarity.
Check for air leaks at all joints. Reseal and tighten.
Remove bypass poppet and clean. If damaged, replace.
Check slots and vanes for excessive wear or damage. If damaged, replace.
Check wiring to confirm correct polarity.
Check battery voltage. Confirm voltage is correct.
Confirm correct polarity and all connections are tight. Confirm wire
size is correct and not too small.
Remove and clean filter assembly or replace.
Check for air leaks at all joints. Reseal and tighten.
Remove bypass poppet and clean. If damaged, replace.
Remove any obstructions. Check rotor slots and vanes for exces-
sive wear. Replace if damaged.
Check all accessories for blockage. Remove any obstructions.
Fill tank.
Factory-supplied automatic nozzle is recommended.
Replace hose.
Remove bypass poppet and clean or replace as needed.
Check rotor and vanes for excessive wear. Replace as needed.
Check incoming battery voltage and tighten wiring connections.
UL Listing requires specific treatment for motor replacement,
contact factory.
Check and reseal threaded joints.
Retighten bolts.
Check O-rings for damage. Replace as needed.
Fuel leaking from drain hole indicates shaft seal needs to be
replaced.
Replace hose.
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