English (GB)
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24. Maintenance and service
24.1 Maintenance
24.1.1 Pump
The pump is maintenance-free.
If the pump is to be drained for a long period of inactivity, inject a
few drops of silicone oil on the shaft between the motor stool and
the coupling. This will prevent the shaft seal faces from sticking.
24.1.2 Motor
Check the motor at regular intervals. It is important to keep the
motor clean in order to ensure adequate ventilation. If installed in
a dusty environment, clean and check the pump regularly.
24.2 Service
If Grundfos is requested to service the pump, you must clean it
must before returning it. If you cannot clean the pump properly,
then provide Grundfos with all relevant information about the
pumped liquid.
If the above is not fulfilled, Grundfos can refuse to accept the
pump for service.
Possible costs of returning the pump are to be paid by the
customer.
24.2.1 Integral shaft/coupling
TPE2 and TPE3 pumps have integral shaft/coupling. We
recommend that you do not remove the motor.
If the motor has been removed, you must remove the motor stool
in order to refit the motor correctly. Otherwise the shaft seal may
be damaged.
24.2.2 Blanking flanges
For twin-head pumps, a blanking flange with a pump housing
gasket is available. See fig.
.
Fig. 89
Fitting the blanking flange
If one pump requires service, fit the blanking flange to allow the
other pump to continue operating.
Warning
Before starting work on the pump, make sure that the
power supply has been switched off for at least 5
minutes. Make sure that the power supply cannot be
accidentally switched on.
Warning
Make sure that the escaping water does not cause
injury to persons or damage to the equipment.
Warning
If the pump is used for a liquid which is injurious to
health, it will be classified as contaminated. In such
cases, the proper precautions must be taken to avoid
injury to health when operating or working on the
pump.
TM
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