Disposing Of The Product - Grundfos CRK Guía De Instalación Y Funcionamiento

Fault
1. Motor does not run
when started.
5. Pump runs but
gives no liquid or
pump performance
is not constant.
6. Leakage in shaft
seal.
7. Noise.

11. Disposing of the product

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
3. See also end-of-life information at
www.grundfos.com/product-recycling.
Cause
a) Power supply failure.
b) Fuses are blown.
c) Motor-protective circuit breaker has
tripped.
d) Thermal protection has tripped.
e) Main contacts in motor-protective
circuit breaker are not making contact
or the coil is faulty.
f) Control circuit is defective.
g) Motor is defective.
a) Pump strainer partly blocked by
impurities.
b) Liquid level in tank too low.
c) Pump draws in air.
a) Shaft seal is defective.
a) Cavitation.
b) Pump does not rotate freely (frictional
resistance) because of incorrect
pump shaft position.
c) Frequency converter operation.
Remedy
Connect the power supply.
Replace fuses.
Reactivate the motor-protective
circuit breaker.
Reactivate the thermal protection.
Replace contacts or magnetic coil.
Repair the control circuit.
Replace the motor.
Clean the strainer.
Increase the liquid level.
Check the inlet conditions.
Replace the shaft seal.
Check the inlet conditions.
Adjust the pump shaft.
See section Motors supplied by
Grundfos.
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