Danfoss PAHT C, Инструкция по установке, эксплуатации и обслуживанию

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5.6 Pre mounting checklist, based on Danfoss preferred system designs
Table 1: Check points when assembling and commissioning system
Operation guide | Installation, Operation and Maintenance Manual for PAHT C 2-6.3 pumps
11 180R9316 | AQ176586503002en-000501 | IOM PAHT C 2-6.3 pumps | 01.2022
Check points Comment OK ?
CP1 Ensure that the environmental conditions are safe .
See Arrival inspection, transpor-
tation, handling, lifting and
storage, chapter 4 .
CP2
Minimum and maximum start-up temperature for fluid and
pump .
See Data sheet or Instruction,
appendices 1 and 2 .
CP3 Filtration condition (10µm absolute (β
10
≥ 5000)
See Danfoss requirements in
Data sheet and Instruction,
appendices 1 and 2
CP4 Power supply for electric motor and VFD .
See Data sheet for the used
motor and VFD .
CP5
Safety circuit / breaker must be sized for the motor and
environment (corrosion and humidity)
See Data sheet for the used
safety circuit .
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) .
See Data sheet for the used
equipment .
CP8
Check the factory settings of the safety/relief valves or
pressure relief valves (1) .
See Data sheets for the used
valves .
CP9
Check the settings of the pressure transmitter/switch (2) set at
min . inlet pressure .
See Data sheet or Instruction,
appendices 1 and 2 .
CP10
Check that all pressure indicators (PI) are selected to be able
to measure the system pressure range .
Scaling should at least be 1
barg or more precise .
CP11 Check coupling distance ( air gab – movement of the spider ) 3 – 5 mm
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 dampers, 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 manufacturer’s recom-
mendations .
• Misalignment of the hard pipes may give
unintended stress on the pump port
connection 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 .
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 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 .