Instruction
Pump instruction PAHT C 2-6.3
39
180R9316 | AQ176586503002en-000501 | IOM PAHT C 2-6.3 pumps | 01.2022
5.6.2 Open-ended systems with water supply
from tank.
1 .
Empty the tank of water and empty the
pump housing through the lower bleeding
plug . When the pump is empty, retighten
the plug .
2 .
Through the upper bleeding plug, fill the
pump housing with anti-freeze medium .
Pour anti-freeze medium into the tank .
Connect a hose to the outlet of the pump
and lead the other end of the hose back to
tank .
3 .
Quickly start and stop the pump . Make sure
that the pump does not run dry .
The pump is now protected against internal
corrosion and frost .
5.6.3 Open-ended systems with direct water
supply.
1 .
Disconnect the water supply to the pump .
2 .
Through the lower bleeding plug, empty
the pump housing of water and close it
again .
3 .
Connect the pump to a tank of e .g . 25 litre/
6 gal . of anti-freeze additive . Connect a
hose to the inlet port of the pump and via
another hose return the flow from the
outlet port port to the tank with anti-freeze
additives .
4 .
Quickly start and stop the pump . Make sure
that the pump does not run dry .
The pump is now protected against internal
corrosion and frost .
6. Service
Danfoss PAHT C pumps are designed for long
periods of service-free operation to ensure low
maintenance and life cycle costs . Provided that
the pump is installed and operated according to
Danfoss specifications, Danfoss PAHT C pumps
typically run 8,000 hours between service
(Validated in water) . However, the service
schedule for your PAHT C pump may vary accord-
ing to the application and other factors . Some
chemicals might change the surface tension
which the pumps are relying on and therefore
decrease the service intervals .
The life of a pump may be greatly shortened if
Danfoss recommendations concerning system
design and operation are not followed .
In our experience, poor filtration is the number
one cause of pump damage.
Use of some chemicals, might reduce the
service intervals.
Other factors that affect the pump performance
and lifetime include:
-
Running the pump speeds outside
specifications
-
Supplying the pump with temperatures
higher than recommended
-
Running the pump at inlet pressures
outside specifications
-
Running the pump at outlet pressures
outside the specifications
We recommend that you inspect your pump
after 8,000 hours of operation even if it is
running without any noticeable problems .
Replace any worn parts if necessary, including
pistons and shaft seals, to keep your pump
running efficiently and to prevent breakdown . If
worn parts are not replaced, then our guidelines
recommend more frequent inspection .
Make sure to install a proper drain to avoid any
spill of fluid into the surroundings, drain the
whole pump before servicing and wear neces-
sary safety equipment .
Read the Service Instruction before servicing the
pump .
Summary of Contents for PAHT C
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