User manual Installation, Operation and Maintenance APP Pumps (APP 16-22)
14
180R9265 / IOM APP Pumps - v01 / 01.2013
6.1 General safety information
Before inspecting the pump unit, read the Safety
chapter 2 in this user manual.
6.2 What to listen and look for
If the following is observed, please act as
indicated:
A) Re-check all bolts and, if necessary, contact
the maintenance department in order to
have all bolts tighten to the specied levels.
B) Leakage – if a small leak dripping from the
bell housing is observed, contact the
maintenance department.
C) Leakage – if there is a large leak, the unit
should be stopped as soon as possible.
Contact the maintenance department.
D) High frequency tones – safety/relief valves
are either damaged or running very close
to their cracking pressure, stop the unit
immediately. Contact the maintenance
department.
E) Non-standard noise or vibration from the
pump requires the unit to be stopped
immediately. Contact the maintenance
department.
F) Very high temperatures – can indicate one
or more damaged parts inside the pump.
The pump then needs to be stopped
immediately and inspected before running
again. Contact the maintenance depart-
ment.
G) Drop in ow and/or pressure - can indicate
wear on one or more parts inside the
pump. The pump needs to be stopped
immediately and inspected before running
again. Contact the maintenance depart-
ment.
H) Other observations or troubles, please see
appendix 7, Right and Wrong or the Trouble
shooting guide, appendix 6.
Both appendices give good advises on
design, installation, wiring and trouble-
shooting.
If the pump is not stopped for inspection, it can
lead to damage of the pump. See also service
and warranty section in the Data sheet, appendix
1; APP pump instruction or Instruction for
recommended service intervals in appendix 2
and 4.
Danfoss oers service of the pump at the system
manufacturer’s location as well as training in
servicing the pump. Quotes are oered upon
request.
Danfoss recommends at the same time also to
check the lter and membrane condition and
evaluate dirt found, replace lter and membrane
elements if necessary.
6. Operation of motor
pump unit
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