Servicing The Product; Maintenance; Service; Cleaning The Product - Grundfos TPE2 Notice D'installation Et De Fonctionnement

27. Servicing the product

DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply to the motor and to the
signal relays. Wait at least 5 minutes before
starting any work on the motor. Make sure that the
power supply cannot be accidentally switched on.
DANGER
Magnetic field
Death or serious personal injury
- Do not handle the motor or rotor is you have a
pacemaker.
DANGER
Hazardous liquids
Death or serious personal injury
- If the pump is used for a liquid which is injurious to
health, it will be classified as contaminated. In
such cases, take proper precautions to avoid injury
to health when operating or working on the pump.
- Wear personal protection equipment.
CAUTION
Hot or cold liquids
Minor or moderate personal injury
- Wear personal protection equipment.

27.1 Maintenance

27.1.1 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 prevents the shaft seal faces from sticking.
Pumps with BQQE shaft seal must be operated minimum once
every month in minimum 5 minutes to prevent the shaft seal faces
from sticking.
27.1.2 Motor
If service is needed on the product, please contact Grundfos

Service.

27.2 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.
27.2.1 Integral shaft and coupling
TPE2 and TPE3 pumps have integral shaft and coupling. We
recommend that you do not remove the motor.
If you have removed the motor, you must remove the motor stool
in order to refit the motor correctly. Otherwise the shaft seal may
be damaged.
27.2.2 Blanking flanges
For twin-head pumps, a blanking flange with a pump casing
gasket is available. See fig. 86.
Fig. 86 Fitting the blanking flange
If one pump requires service, fit the blanking flange to allow the
other pump to continue operating.

28. Cleaning the product

WARNING
Electric shock
Death or serious personal injury
- Switch off the power supply to the motor and to the
signal relays. Check that the terminal box cover is
intact before spraying water on the product.
In order to avoid condensation in the motor, let the motor cool
down before spraying it with cold water.
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