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Add refrigerant
The equipment contains
a basic quantity of refrigerant.
Furthermore, for refrigerant line
lengths of more than 5 metres
per circuit, an additional amount
of refrigerant must be added, in
accordance with the following
chart:
ML
262
ML
352
ML
522
Basic
line length
Additional fill quan-
tity
Up to and incl.
5 m
0 g/m
5 m to max.
20 m
30
g/m
30
g/m
30
g/m
After the tightness check has
been successfully completed,
connect the vacuum pump via
the pressure gauge station to
the valve connections on the
outdoor component (see chapter
"Tightness check") and create
a vacuum.
Perform the following checks
prior to putting the unit into
operation for the first time and
after any work on the refrigeration
circuit. Record the results in the
commissioning report:
Check all refrigerant
lines and valves using
leak detection spray or soapy
water for leaks and for
inadvertent reversal of the
suction and injection lines,
with the unit at a standstill.
Check refrigerant
lines and insulation for damage.
Check electrical
connection between
indoor unit and outdoor
component
for correct polarity.
Check that all fastenings,
mountings etc.
are firm and at the correct level.
Before
Commissioning
Make sure that the refrigerant
which is used is always filled
in liquid form!
ATTENTION
NOTE
Check the refrigerant fill
quantity in the event of
overheating
Wear protective clothing when
handling refrigerant.
ATTENTION
Commissioning
Commissioning is only to be
performed and documented
by specially trained personnel.
NOTE
Once all the components have
been connected and tested, the
system can be commissioned.
A functional check should be
performed to verify its correct
function and identify any unusual
operational behaviour prior to
handing it over to the operator.
Function test and test run
Check the following points:
Leak tightness of refrigerant
lines.
Compressor and fan running
smoothly.
In cooling mode, cold air
output by the indoor unit, and
warm air output by the outdoor
component.
Functional test of the indoor
unit and all program sequences.
Check of the surface
temperature of the suction pipe
and determination of vaporiser
overheating. To measure
the temperature, hold the
thermometer to the suction
pipe and subtract the boiling
point temperature reading on
the pressure gauge from the
measured temperature.
Documentation of the
measured temperatures in the
commissioning report.
Check that the stop valves
and valve caps are tight after
carrying out any work on
the refrigerant circuit. Use
appropriate sealant products
as necessary.
NOTE
Functional test for the cooling
and heating modes
1. Remove the caps from the
valves.
2. Begin the commissioning
process by briefly opening the
shut-off valves of the external
unit until the manometer
displays a pressure of approx.
2 bar.
3. Use leak detection spray or
suitable devices to check that all
the connections are leak tight.
REMKO ML...DC - ARCTIC
24
24


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