Danfoss PAHT C, Инструкция по установке, эксплуатации и обслуживанию

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Instruction Pump instruction PAHT C 2-6.3
34 180R9316 | AQ176586503002en-000501 | IOM PAHT C 2-6.3 pumps | 01.2022
2.2 Open-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 inlet filter (1) in front of the PAHT
pump (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)
between the filter and the pump inlet . Set
the minimum inlet pressure according to
specifications described in item 4, technical
data . The monitoring pressure switch stops
the pump if inlet pressure is lower than the
set minimum pressure .
D Monitoring temperature switch:
Install the monitoring temperature switch
(4) between the filter and the pump, on
either side of the monitoring pressure
switch . Set the temperature value accord-
ing to technical data, item 4 . The monitor-
ing temperature switch stops the pump if
inlet temperature is higher than the set
value .
E Hoses:
Always use flexible hoses (5) 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 (6):
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 (7) should be
installed to prevent system damage .
I Drain:
Always install a proper drain (8) in order to
safely drain the fluid to avoid
vaporization and to ensure a safe drain,
without human contact before inspection
and/or service .
Note: If a non-return valve is mounted in the
inlet line, a low-pressure relief valve is also
recommended between the non-return valve
and the pump to protect against high-pressure
peaks.
PI
System
PI
M
1
2
3
4
5 5
7
8
6