User manual
Installation, Operation and Maintenance APP S 674 pumps
14
180R9270 / IOM APP S 674 - v01 / 03.2013
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 one or more of the following examples are
observed, please act as indicated:
A)
Loose bolts – check all bolts and, if
necessary, contact the maintenance
department in order to have all bolts
tightened to the specified torque(s) .
B)
Leakage – if a small leakage from the bell
housing is observed . Contact the mainte-
nance department .
C)
Leakage – if there is a large leak, the unit
should be stopped immediately . Contact
the maintenance department .
D)
High frequency tones – safety/relief valves
are either damaged or running very close
to their design pressure, stop the unit
immediately . Contact the maintenance
department .
E)
Increased noise or vibration – requires the
unit to be stopped immediately . Contact
the maintenance department .
F)
Very high temperatures – may indicate that
one or more parts are damaged inside the
pump . The pump must be stopped
immediately and inspected before it is
restarted . Contact the maintenance
department .
G)
Drop in flow and/or pressure - may indicate
wear of one or more parts inside the pump .
The pump must be stopped immediately
and inspected before it is restarted .
Contact the maintenance department .
H)
Other observations or troubles, please see
the Trouble shooting guide, appendix 4 .
The appendix gives good advises regarding
design, installation, wiring and trouble-
shooting .
See also service and warranty section in
appendix 1, Data sheet and appendix 2,
Instruction .
If the pump is not stopped for inspection as
recommended, it can lead to damage of the
pump or breakdown . See also service and
warranty section in appendix 1, Data sheet, or
appendix 2, Instruction .
Danfoss offers service of the pump at the system
manufacturer’s location as well as we offer
training in how to service the pump . Quotes are
offered upon request .
Danfoss recommends simultaneously to check
the filter and membrane condition and to
evaluate contamination; filter and membrane
elements must be replaced if necessary .
6.
Operation of pump
unit
7.
Maintenance and
servicing the pump
unit
7.1 General safety information
Before servicing the pump unit, it is necessary to
read and understand this user manual, especially
the Safety, chapter 2 . Remember to wear suitable
safety equipment according to Safety, chapter 2 .
7.2 Service and inspection interval for the
pump
Maintenance and service intervals are depending
on the cleanliness level of the water, hydraulic
load and temperature of the pump unit . The
most important parameter is the filtration of the
water .
See the section Service and warranty in appen-
dix 1, Data sheet and in appendix 2, Instruction .
For spare parts and service tools, please see
appendix 3, Parts list .
Danfoss offers service of the pump at the system
manufacturer’s location and training in how to
service the pump . Quotes are offered upon
request .
7.3 Shut down of the system
A)
Open the pressure valves at the brine site
to release the pressure .
B)
Stop the high-pressure pump .
C)
Stop the feed pump .
D)
Switch off the motor safety circuit breaker
for both the high-pressure pump, feed
pump and VFD and lock them . Only
personnel servicing the pump unit should
be able to unlock/activate the switch again .
E)
Open bleeding and drain plugs . Wait until
the pump and system are emptied for
water .
