Pumpex P 1001, Инструкция по эксплуатации, Страница: 11 / 22

SERVICE INSTRUCTION
P 601 - P 3001
P 601/701/801/1001/1501/2001/3001.58.0308.Eng/Digital
11 (22)
The insulation between the separate turns in the winding should also
be checked. This can be done by measuring the resistance of the
phase windings, which should give the same reading for all three win-
dings for 3-phase motors. For single-phase motors, the resistance in
the auxiliary field is roughly double that in the main field.
The circuit with the three built-in thermal contacts should be checked
for continuity, using an ohmmeter or buzzer.
If the circuit reads open, the defective contact should be identified by
checking each individual thermal contact. The faulty thermal contact
can be by-passed in accordance with the adjacent wiring diagram.
Disconnect all stator leads from the contactor and remove the
contactor. Check that the contactor holding coil is free from defects,
and that the contact points are not burned. Replace holding coil, or
entire contactor if necessary.
Removal of Stator
Loosen nuts for the 6-hole seals and pull out the seals. Pull out the
cables and arrange them so as to avoid jamming when the stator is
falling out of the housing.
Remove the 0-ring in the upper bearing seat. Block up the housing so
that the stator can drop freely out of the housing. It is important that
the sealing surfaces of the housing not get damaged.
Heat the housing quickly with two LP- gas flames at the stator lami-
nations and downwards, until the stator drops out at a temperature of
about 250 o C (480 o F).
Caution!!
Housing and stator will be very hot!!
Clean the housing and check it for damage or cracks, particularly
on sealing surfaces and in ball bearing seat. If damage cannot be
corrected, the housing must be replaced.
Block up the new stator and make sure that the housing can be fully
pushed down onto the stator. Protect the stator insulation from damage
and insert the terminal wires (free from insulation resin, clean and
smooth) into the stator.
Note!! avoid contact with the hot housing during assembly. Burns
may occur.
Heat the housing with two LP-gas flames to about 250
o
C (480
o
F). With
two nozzles, this will take about one minute. Take the hot housing with
heat resistant gloves and push it down to its stop over the housing.