Grundfos MTA 110H-180, Installation And Operating Instructions Manual

Page: 6 / 12

6
English (US)
6. Operation
6.1 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. 3 Motor fan cover with indication of
the correct direction of rotation
7. Maintenance and service
7.1 Maintenance
Pumps installed in accordance with these
instructions require very little maintenance.
7.1.1 Lubrication
The motor ball bearings are grease-packed and
sealed for life. No further lubrication is
necessary.
7.1.2 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.
7.1.3 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 8. Fault
finding .
7.2 Service
7.2.1 Contaminated pumps
Before the pump is returned to Grundfos for
service, the certificate of cleanliness must be
filled in and sent to Grundfos. See page 9.
If Grundfos is requested to service the pump, it
must be cleaned before it is returned.
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.
TM
04 800
4 261
0
Warning
If used for a liquid which is
injurious to health or toxic, the
pump will be classified as
contaminated.