English (GB)
11
7. Startup
The pump can be started against an open or a
closed discharge valve.
Before starting the pump:
•
Make sure that all pipe connections are tight.
•
Make sure that the pump is immersed to the
recommended level.
•
Make sure that chip trays are not blocked by
impurities.
Start the pump as follows:
1. See the correct direction of rotation of the pump
on the motor fan cover or on the sight glass.
When seen from the top, the pump should rotate
counter-clockwise
.
2. Start the pump and check the direction of
rotation.
Fig. 8
Sight glass with indication of the correct
direction of rotation
Fig. 9
Motor fan cover with indication of the
correct direction of rotation
8. Operation and maintenance
8.1 Lubrication and maintenance
Pumps installed in accordance with these
instructions require very little maintenance.
The motor ball bearings are grease-packed and
sealed for life. No further lubrication is necessary.
8.2 Filters
Chip trays, filters, etc. should be cleaned at regular
intervals to ensure a correct flow of liquid. This will
also increase the pump life.
8.3 Periodic checks
Make the following checks at regular intervals,
depending on the conditions and time of operation.
•
Check the quantity of liquid and operating
pressure.
•
Check that there are no leaks.
•
Check that the motor is not overheating.
•
Check the tripping of the motor-protective circuit
breaker.
•
Check that all control devices are operating
satisfactorily.
If the above checks do not reveal any abnormal
operating details, no further checks are necessary.
Should any faults be found, see section
9. Service
A contaminated pump must not be sent to Grundfos
for service until Grundfos has received all necessary
details about the pumped liquid, etc. Otherwise
Grundfos can refuse to accept the pump for service.
Costs of returning the pump are to be paid by the
customer.
T
M
04
80
03
26
10
TM
04
80
04
26
10
Warning
If a pump has been used for pumping
liquids which are injurious to human health
or poisonous, it will be classified as
contaminated.
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