Danfoss APP series User Manual

User manual Installation, Operation and Maintenance APP Pumps (APP 16-22)
13
180R9265 / IOM APP Pumps - v01 / 01.2013
5.12 Ensure free ow
Ensure that the ow from safety/relief valves 8
and 9 is completely unhindered. A blocked
safety/relief valve can cause excessive build-up
of pressure and thereby cause dangerous
situations and damage to the whole system.
5.13 Verify setting of safety/relief valves
Make sure, the safety/relief valves 8 and 9 are
placed correctly.
Check the pressure settings on the name plates
of the safety/relief valves. If they are OK,
continue. Otherwise replace the safety/relief
valves.
5.14 Flush the pump
Fully open the pressure valve at the brine site.
Close all the bleeding and draining plugs on the
high pressure pump.
Start the feed pump and ensure that the ow
from the feed pump to the high pressure pump
is unhindered.
5.15 Bleed and remove air from the pump
Open bleeding plugs. Keep the plugs open until
only water leaves the high pressure pump.
5.16 Verify direction of rotation
An arrow can be found on the pump or pump
unit. The direction of rotation must always follow
the arrow.
Unlock the safety circuit breaker. Start the motor
for 1 second and observe the direction of
rotation either looking on the fan of the motor or
on the coupling true the hole in the bell housing
(not available on all bell houses). If the motor is
turning the wrong direction, switch two phases
in the connection box of the motor or reprogram
the direction in VFD.
5.17 Commissioning
tClose all the bleeding and draining plugs.
tOpen the pressure valve at the brine site.
t Switch the safety circuit breaker on for both
motor(s) and VFD(s).
tStart the feed pump.
tStart the high pressure pump.
t If a VFD or a soft starter is used a ramp up
time of minimum 10 second is required to
avoid damage of internal pump parts.
t Monitor the inlet pressure and outlet
pressure of the high pressure pump and
look for leakages.
t Check the pressure indicator function by
slowly closing the valves. The pump unit
should stop when the minimum inlet
pressure and maximum outlet pressure has
been reached.
t Adjust the pressures to the specied inlet
and outlet pressure for the system and let
the pump unit run until the electric motor
and pump temperature is stable.
t If the system is running within the system
design limits, the system is released for
operation.
5.18 Check the lter condition
Evaluate dirt found in lter, replace lter
elements, if necessary.
5.19 Instruct operator and maintenance
personnel
Before using the pump/pump unit, the personnel
must be instructed in using the pump/pump
unit, its function, components, documentation
and safety.
Danfoss oers commissioning and service at
system manufacturer’s location. Rate quotes are
oered upon request.

Danfoss APP series Specifications

General

Brand	Danfoss
Model	APP series
Category	Water Pump
Language	English