Danfoss APP 0.6 User Manual

46
180R9267 / IOM APP 1.5-3.5 Appendices - v04 / 11.2013
Instruction Trouble shooting guide for APP and APP S 674 pumps
8
06.2013
5. Noise from installation
Cause Remedy Comments
5.1 Inlet/outlet connections (hoses/pipes) 5.1.1 Use exible hoses at inlet/outlet connec-
tions. Danfoss can provide exible hoses.
Please contact Danfoss High Pressure
Pumps sales oce for further information.
5.1.2 Mount the connections to the frame by a
vibration dampener mounting plate.
Non-exible connections mounted directly on
the frame will cause even small pressure
pulsations from pump and create vibrations in
the system/plant.
5.2 Length/dimension of inlet/outlet line 5.2.1 Increase pipe diameter and/or reduce the
number of bends.
Too small pipes or too many bends may create
too fast ow/turbulence through the pipes and
thus increase the noise level.
5.3 Hose stiness 5.3.1 Use a more exible hose. Danfoss can
provide exible hoses. Please contact
Danfoss High Pressure Pumps sales oce
for further information.
Too sti hoses cannot dampen the small
pressure pulsations from the pump, and
subsequently vibrations occur in the system/
plant.
5.4 Hoses/pipes mounted directly on frame 5.4.1 Mount the connections to the frame by a
vibration dampener mounting plate.
If the hoses are mounted directly on the frame,
the small pressure pulsations from the pump
can be transferred to the frame and the rest of
the system/plant.
5.5 Vibration dampener under the electric
motor
5.5.1 Mount a vibration dampener below the
motor/pump.
When no dampener is installed below the
electric motor, vibrations from the motor and
pump may be transferred to the frame and the
rest of the system/plant.

Danfoss APP 0.6 Specifications

General

Brand	Danfoss
Model	APP 0.6
Category	Water Pump
Language	English