FPS VR Serie El Manual Del Propietario página 9

4. Insert the pin into the pump shaft.
5. Engage one half of the coupling to the motor shaft's shoulder.
IMPORTANT: The coupling must remain in position once released.
6. Arrange the second coupling half to the motor shaft.
7. Tighten the coupling attachment screws to the appropriate torque, keeping the two coupling parts
symmetrical.
8. Ensure the impeller spins freely, spinning it by hand and listening for interference.
9. Assemble the coupling cover guards.
Troubleshooting
Problem
Motor thermal protector tripped
Open circuit breaker or blown fuse Check electric wiring and motor for short circuits and correct.
Motor fails to start or not Impeller binding
running
Motor improperly wired
Defective motor
Pump is not primed: air or gases in
pumpage
Discharge or suction plugged or
valve closed
Incorrect rotation (3 Phase only)
Little or no discharge
Low voltage or phase loss
Impeller worn or plugged
System head too high
Excessive suction lift or losses, or
NPSHA too low for the pump
Valves in suction or discharge lines
partially closed
Low pump capacity or
Suction or discharge line partially
pressure
plugged
Wrong pump rotation
Impeller binding
Discharge head too low creating
Excessive power
excessive flow rate
consumption
Fluid viscosity: specific gravity too
high
Impeller binding
Pump is not primed: air or gases in
pumpage
Discharge or suction plugged or
valve closed
Impeller worn or plugged
Excessive noise and
vibration
Excessive suction lift or losses, or
NPSHA too low for the pump
Discharge head too low, creating
excessive flow rate
Worn bearing
Pump, motor, or piping loose
Water leakage at pump
Defective seal assembly
shaft
Probable Causes
Correct cause for high amperage, such as low voltage or excessive pumping.
Remove pump case and check for debris.
Check complete suction line and all fittings for air leaks and verify foot valve has
adequate submergence.
Take to an authorized motor shop for repair or replacement.
Check suction line and foot valve for leaks. Make sure that water level has not
dropped to uncover suction inlet. Prime pump.
Clear obstructions from suction and discharge lines.
Interchange any two of three wires either at the motor or starter.
Correct incoming power to match motor nameplate requirements.
Clean or replace impeller.
Reduce system head (back-pressure on pump) or resize pump.
Locate pump closer to the water source, increase pipe size or resize pump.
Open valves to reduce possible restrictions.
Clear obstructions from discharge line.
Correct to proper rotation.
Remove pump case and check for debris.
Close down discharge valve to increase pressure and throttle back flow rate.
Modify fluid properties or resize pump.
Remove pump case and check for debris.
Check complete suction line and all fittings for air leaks and verify foot valve has
adequate submergence.
Clear obstructions from suction and discharge lines.
Clean or replace impeller.
Locate pump closer to the water source, increase pipe size or resize pump.
Close down discharge valve to increase pressure and throttle back flow rate.
Check bearing for damage and replace if necessary.
Verify all connections and mountings are secure and piping supported.
Replace seal.
Corrective Action
MAINTENANCE
Troubleshooting
9