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User manual Installation, Operation and Maintenance APP Pumps (APP 5.1-10.2)
14
180R9263 / 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 specified 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 flow 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 offers service of the pump at the system
manufacturer’s location as well as training in
servicing the pump . Quotes are offered upon
request .
Danfoss recommends at the same time also to
check the filter and membrane condition and
evaluate dirt found, replace filter and membrane
elements if necessary .
6. Operation of motor
pump unit