Danfoss APP 5.1 User Manual page 38

Instruction Instruction
6. Service
Danfoss A/S
High Pressure Pumps
DK-6430 Nordborg
Denmark
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This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.
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APP pump instruction APP 5.1-10.2 APP pump instruction APP 5.1-10.2
5.5.2 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
6.1 Periodic maintenance
The APP pump is designed so that lubrication
follows from the water itself and there is thus no
oil in the pump.
The pump requires no periodic replacements of
seals and valve parts.
180R9263 / IOM APP 5.1-10.2 Appendices - v02 / 01.2013 180R9072 / 521B0747 / DKCFN.PI.010.D4.02 / 10.2012 180R9072 / 521B0747 / DKCFN.PI.010.D4.02 / 10.2012
hose to the inlet port of the pump and via
another hose return the flow from the
outlet 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.
6.2 Repair
In case of irregular function in the pump, please
contact the Danfoss Sales Organisation.