Danfoss APP Series Installation, Operation And Maintenance Manual page 11

Operation guide
© Danfoss | 2023.03
Installation, Operation and Maintenance APP 53-92 pumps
5.6 Pre mounting checklist, based on Danfoss preferred system design
Table 1: Check points when assembling and commissioning system
Check points
CP1 Ensure that the environmental conditions are safe.
CP2 Minimum and maximum start-up temperature for fluid and
pump.
CP3 Filtration condition (10 µm absolute (ß
CP4 Power supply for electric motor and VFD.
CP5 Safety circuit / breaker must be sized for the motor and
environment (corrosion and humidity)
CP6 Bolts and screws must conform to environmental conditions
as well as fluid and torque requirements.
CP7 Instrumentation, pressure switch should be designed to
conform to the environment (corrosion and humidity).
CP8 Check the factory settings of the safety/relief valves or
pressure relief valves (page 11).
CP9 Check the settings of the pressure transmitter/switch (3) set
at min. inlet pressure (page 11).
CP10 Check that all pressure indicators (PI) are selected to be able
to measure the system pressure range (page 11).
CP11 Check that the coupling is installed according to manufac-
turers instruction
CP12 Ensure all pipings have been flushed and are correct installed
CP13 Check piping for possible air gaps.
5.7 Lifting and positioning
Lift the pump unit onto base (Remember
vibration dampeners, if needed). Fasten the
motor to the base.
See also chapter 4, Arrival inspection, transporta-
tion, handling, lifting and storage.
5.8 Mount the different equipment
(connections, pipes, tubes, check and safety/relief
valves, etc.)
• The hard piping and flexible hoses used,
must be of proper design and must be
installed in accordance with the manufactur-
er's recommendations. (see also Design
guides 180R9084 and 180R9367 - both
available on hpp.danfoss.com).
• Misalignment of the hard pipes may give
unintended stress on the pump port
connections and may damage the pump.
• Prevent excessive external pipe load.
• Do not connect piping by applying external
force (use of wrenches, crane, etc.) Piping
must be aligned without residual stress.
• Do not mount expansion joints so that their
force applies internal pressure on the pump
connections.
Comment
See Arrival inspection,
transportation, handling,
lifting and storage, chapter 4.
See Data sheet or Instruction,
appendices 1 and 2.
≥ 5000) See Danfoss requirements in
10
Data sheet and Instruction,
appendices 1 and 2
See Data sheet for the used
motor and VFD.
See Data sheet for the used
safety circuit.
See Data sheet for the used
equipment.
See Data sheets for the used
valves.
See Data sheet or Instruction,
appendices 1 and 2.
Scaling should at least be 1 bar
or more precise.
5.9 Electrics
All electrical installation work must be carried
out by authorized personnel in accordance with
EN60204-1 and/or local regulations. (see also
Safety, chapter 2)
Turn off the safety circuit breaker and lock it.
Mount the power cable on the electric motor.
If a VFD is used, adjust the protective motor
switch/VFD to the current limits found on the
name plate of the electric motor.
5.10 Instrumentation
The pressure switch/sensor should be mounted
as close to the pump as possible. It is recom-
mended to test the pressure/sensor switch via an
instrumentation manifold.
Mount the pressure switch/sensors according to
the manufacturer's instructions.
180R9346 | AQ240486503020en-001702 | 11
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