English (GB)
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7. Maintaining the product
The pump is maintenance-free, as it does not have
mechanical ball bearings or a shaft seal. This means
that unplanned downtime is minimised and difficult
servicing is avoided.
You must keep the motor clean in order to ensure
adequate cooling of the motor. If the pump is
installed in dusty environments, clean the pump
regularly. Take the enclosure class of the motor into
account when cleaning.
The motor has maintenance-free bearings.
7.1 Service documentation
Service documentation is available in Grundfos
Product Center
(http://product-selection.grundfos.com/).
If you have any questions, please contact the
nearest Grundfos company or service workshop.
8. Taking the product out of operation
8.1 Cleaning
Before a long period of inactivity, flush the pump with
clean water to prevent corrosion and deposits in the
pump.
Use acetic acid to remove possible lime deposits
from the pump.
8.2 Frost protection
Pumps which are not being used during periods of
frost must be drained to avoid damage.
1. Remove the filling and drain plugs from the
pump. See fig.
.
2. Remove the inspection screw from the motor.
See fig.
3. Let the pump drain.
4. Re-install the inspection screw.
Do not refit the plugs until the pump is taken into
operation again.
8.3 Taking the product permanently out of
operation
Observe the following if the pump is to be
permanently taken out of operation and removed
from the pipe system.
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
WARNING
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
WARNING
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Back injury
Minor or moderate personal injury
- Use lifting equipment which is approved
for the weight of the product.
- Use a lifting method suitable for the
weight of the product.
- Wear personal protective equipment.
Before startup after a period of inactivity,
the pump and the inlet pipe must be
completely filled with liquid. See section
.
WARNING
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
WARNING
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Back injury
Minor or moderate personal injury
- Use lifting equipment which is approved
for the weight of the product.
- Use a lifting method suitable for the
weight of the product.
- Wear personal protective equipment.
