Grundfos Conlift - Maintenance and service; Cleaning the Conlift; Contaminated lifting station or components

11
The release of the alarm (buzzer) ensures that the
the second cut-in of the pump is effected by the
alarm pressure switch (pressure switch 2), see also
section 3. Function.
The Conlift is now ready for operation.
Note: After having checked the function, insert the
inlet hose into the collecting tank and allow the con-
densate from the boiler or cooling/air-conditioning
system to flow into the tank.
7. Maintenance and service
As the Conlift is used for different applications, differ-
ent types of contamination may occur, such as lime
incrustations, algae, dust on cooling/air-conditioning
system, or contamination caused by acid in the
boiler.
It is recommended to clean the Conlift regularly to
ensure reliable operation and maximum pump per-
formance.
7.1 Cleaning the Conlift
Procedure:
1. Cut off the flow of condensate from the boiler or
cooling/air-conditioning system, or stop the flow
of condensate to the Conlift.
2. Make sure that the hoses are not mechanically
or chemically damaged.
3. Remove the inlet hose. The condensate running
out of the hose must be collected in a suitable
container.
4. Remove the Conlift from wall or floor.
5. Remove the motor cover.
6. Pour the entire contents of the collecting tank
into a suitable container.
7. Remove the screws for the collecting tank cover
(pos. 3), see fig. 8, and lift off the cover. Remove
the screws in the pump housing (pos. 4) and
remove the pump housing.
8. Remove deposits, dirt, algae and incrustations
with a damp cloth.
9. Remove the screws holding the discharge stub
in place, and remove the discharge stub and
non-return valve ball.
10. Also remove deposits, dirt, algae and incrusta-
tions from the radial seal (pos. 14) with a damp
cloth.
11. Assemble the Conlift in the reverse order.
12. For start-up, see section 6.
7.2 Contaminated lifting station or compo-
nents
Note: If a Conlift lifting station has been used for a
liquid that is injurious to health or toxic, the lifting sta-
tion is classified as contaminated.
If Grundfos is requested to service a contaminated
lifting station, Grundfos must be contacted with de-
tails about the pumped liquid, etc. before the lifting
station is returned for service. Otherwise Grundfos
can refuse to accept the lifting station for service.
However, any application for service (no matter to
whom it may be made) must include details about
the pumped liquid, if the lifting station has been used
for liquids that are injurious to health or toxic.
Before a lifting station is returned, it must be cleaned
in the best possible way.
Possible costs of returning the lifting station are paid
by the customer.
Before starting work on the Conlift, the
electricity supply must be switched off. It
must be ensured that the electricity supply
cannot be accidentally switched on.
Condensates from boilers contain acid!
If acid comes into contact with the skin or
the eyes, it may cause irreversible dam-
age.