Fault Finding Chart; Disposal - Grundfos SPK Series Installation And Operating Instructions Manual

10. Fault finding chart

Before starting work on the pump, make sure that the electricity supply has been switched off and
that it cannot be accidentally switched on.
Fault
1. Motor does not run
when started.
2. Motor starter over-
load trips out imme-
diately when supply
is switched on.
3. Motor starter over-
load trips out occa-
sionally.
4. Motor starter has
not tripped out but
the pump does not
run.
5. Pump runs but
gives no liquid or
pump capacity is
not constant.

11. Disposal

Disposal of this product must be carried out accord-
ing to the following guidelines:
1. Use the local public or private waste collection
service.
2. In case such waste collection service does not
exist or cannot handle the materials used in the
product, please deliver the product or any haz-
ardous materials from it to your nearest GRUND-
FOS company or service workshop.
Cause
a) Supply failure.
b) Fuses are blown.
c) Motor starter overload has tripped out.
d) Main contacts in motor starter are not
making contact or the coil is faulty.
e) Control circuit is defective.
f) Motor is defective.
a) One fuse/automatic circuit breaker is
blown.
b) Contacts in motor starter overload are
faulty.
c) Cable connection is loose or faulty.
d) Motor winding is defective.
e) Pump mechanically blocked.
f) Overload setting is too low.
a) Overload setting is too low.
b) Low voltage at peak times.
a) Check 1 a), b), d) and e).
a) Pump strainer partly blocked by impuri-
ties.
b) Liquid level in tank too low.
c) Pump rotates in the wrong direction.
Remedy
Connect the electricity supply.
Replace fuses.
Reactivate the motor protection.
Replace contacts or magnetic coil.
Repair the control circuit.
Replace the motor.
Cut in the fuse.
Replace motor starter contacts.
Fasten or replace the cable connec-
tion.
Replace the motor.
Remove the mechanical blocking of the
pump.
Set the motor starter correctly.
Set the motor starter correctly.
Check the electricity supply.
Clean the strainer.
Increase the liquid level.
Change the direction of rotation of the
motor.
Subject to alterations.
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