Pre Mounting Checklist, Based On Danfoss Preferred System Design; Lifting And Positioning; Mount The Different Equipment; Electrics - Danfoss APP W HC Series Operation Manual

Operation guide | Installation, Operation and Maintenance APP W HC 15 - 30 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 coupling distance ( air gab – movement of the spider )
CP12 Check correct connections on the pump ( in & outlet)
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 . ) .
• 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 .

180R9410 | AQ282628894589en-000801 | IOM APP W HC 15-30 Pumps | 01.2022
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 .
3-5 mm

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 .
5.11 Connections
Mount and tighten connections and check
valve(s) as specified .
OK ?
11