AXEON Grundfos MQ-Series - Manual (Page 17)

17
English (US)
10. Maintenance
Under normal operating conditions, the pump
is maintenance-free. However, it is recom-
mended to keep the pump clean.
If there is any risk of frost damage, drain the
pump through the drain hole and slacken the
union nut on the discharge pipe, see fig. 16.
The pump must be filled with liquid before it is
started up again. See fig. 14.
Fig. 16 Draining the pump
10.1 Service kits
Service kits are available for the MQ pump.
The service kits consist of the following
replaceable parts:
• shaft seal
• motor
• electronic units
• hydraulic components.
10.2 Start-up after a long period of
inactivity
The end cover incorporates a plug which can
be removed by means of a suitable tool.
See fig. 17.
It is then possible to free the pump
rotor if it has seized up as a result of inactivity.
If it has been drained, the pump must be filled
with liquid before start-up. See fig. 14.
Fig. 17 Removing the end-cover plug
11. Service
If Grundfos is requested to service the pump,
Grundfos must be contacted with details about
the pumped liquid, etc. before the pump is
returned for service. Otherwise Grundfos can
refuse to accept the pump for service.
Possible costs of returning the pump are paid
by the customer.
However, any application for service (no mat-
ter to whom it may be made) must include
details about the pumped liquid if the pump
has been used for liquids which are injurious
to health or toxic.
WARNING
Do not remove the pressure tank
from the pump unless it has been
vented through the air escape
valve.
Never touch the electronics unless
the pump has been switched off
for at least 5 minutes.
TM
01
9
697
44
03
TM
0
4
3
633
4
608
Note
If a pump has been used for a liq-
uid that is injurious to health or
toxic, the pump will be classified
as contaminated.
Grundfos.book Page 17 Monday, May 23, 2011 10:17 AM