Danfoss PAHT C, Инструкция по установке, эксплуатации и обслуживанию

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Instruction Pump instruction PAHT C 2-6.3
33 180R9316 | AQ176586503002en-000501 | IOM PAHT C 2-6.3 pumps | 01.2022
2.1 Closed-system design
A Inlet line:
Dimension the inlet line to obtain mini-
mum pressure loss (large flow, minimum
pipe length, minimum number of bends/
connections, fittings with small pressure
losses and restrictions) .
B Inlet filter:
Install the filter (1) in front of the tank (2) .
Please consult the Danfoss filter data sheet
for guidance on how to select the right
filter .
C Monitoring pressure switch:
Install the monitoring pressure switch (3) in
front of the filter (1) . Set the maximum inlet
pressure to 2 barg (29 .0 psig) . The monitor-
ing pressure switch will stop the pump (5) if
inlet pressure is higher than 2 barg (29 .0
psig), indicating that the filter element
must be changed .
D Monitoring temperature switch:
Install the monitoring temperature switch
(4) in the tank . Set the temperature value
according to technical data, item 4 . The
monitoring temperature stops the pump if
inlet temperature is higher than the set
value .
E Hoses:
Always use flexible hoses (6) to minimize
vibrations and noise .
F Inlet pressure:
In order to eliminate the risk of cavitation
and other pump damage, pump inlet
pressure must be maintained according to
specifications described in item 4, technical
data .
G Non-return valve (7):
Should be installed after the outlet to
prevent pump backspin, which may ruin
the pump .
H Pressure relief valve:
As the Danfoss PAHT pump begins to
create pressure and flow immediately after
start-up regardless of any counter pressure,
a pressure relief valve (8) should be
installed to prevent system damage .
I System water filling:
To ensure proper filtration of new water
(10) supplied to the system, always use the
filling valve (9) .
J Minimum level switch:
Install the minimum level switch (11) above
the outlet of the reservoir . The level switch
must stop the pump if the water in the
reservoir is below the switch, which
indicates that the reservoir is empty .
K Drain:
Always install a proper drain (12) in order
to safely drain the fluid to avoid
vaporization and to ensure a safe drain,
without human contact before inspection
and/or service .
Reservoir
PI
System
PI
M
1
2
3
4
6 6 7
8
5
9
12
10
11
2. System design