Service; Warranty; Maintenance; Repair - Danfoss APP 16-22 Operation Manual

Operation guide
6.

Service

© Danfoss | 2023.03
Installation, Operation and Maintenance APP 16-22 pumps
Storage:
Storage of pump that have been in operation:
For shorter periods of storage ush the pump
with permeate rotating the pump for 10 sec.,
empty permeate and store.
For long term storage (more than 2 months)
Danfoss recommends sevicing the product and
clean any biological growth of the surfaces. Store
the pump dry without water inside.

6.1 Warranty

Danfoss APP pumps are designed for long
operation, low maintenance and reduced
lifecycle costs.
Provided that the pump has been running
according to the Danfoss speci cations, Danfoss
guarantees 8,000 hours service-free operation,
however, max 18 months from date of produc-
tion.
If Danfoss recommendations concerning
system-design are not followed, it will strongly
in uence the life of the APP pumps.

6.2 Maintenance

After 8,000 hours of operation it is strongly
recommended to inspect the pump and change
any worn parts, e.g. pistons and shaft seal. This is
done in order to prevent a potential breakdown
of the pump. If the parts are not replaced, more
frequent inspection is recommended according
to our guidelines.
Stand still
The APP pumps are made of Duplex/Super
Duplex materials with excellent corrosion
properties. It is however, always recommended
to ush the pump with freshwater when the
system is shut down.
When stopping the pump for more than 1 day
ush the pump with permeate by rotating the
pump for 10 sec. Flushing through the ushing
valve of the pump without rotating the pump is
not enough for cleaning the inside of the pump.
The pump can ushed with biocide like the
membranes. The biocide must be compatible
with the materials used in our pump (materials
can be found in the parts list in the Operating
guide).

6.3 Repair

In case of irregular function of the APP, please
contact Danfoss High Pressure Pumps.
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