Local room air conditioner CMK 2950
Stick to the following procedure:
1. Drain the refrigerant
2. Flush the system with insert
gas
3. Evacuate
4. Repeat steps 2 to 3 if required
5. Opening the system by cutting
or soldering
The system must be flushed with
oxygen-free nitrogen in order to
guarantee safety. The flushing
process must be repeated
multiple times if necessary.
Do not use compressed air or
oxygen for the flushing process!
After evacuating, flushing
takes place by filling with dried
nitrogen until the operating
pressure is reached and then
the system must be evacuated
again. This flushing process must
often be repeated until there
is no more refrigerant in the
system. After the last flushing,
the system must be brought to
the ambient pressure in order
to start work. The flushing
process is indispensable when
soldering work is required on the
piping. Ensure that the vacuum
pump outlet is not near an
ignition source and continuous
ventilation is guaranteed.
•
Filling process
The following requirements for
the general specifications must
also be fulfilled during the filling
process:
- Ensure that no contamination
occurs from other refrigerants
(residues in the filling
equipment).
- Keep the lines as short as
possible to minimise the
likelihood of residues forming.
- Filling bottles and cylinders
must be stood upright.
- Ensure that the system is
earthed before filling.
- Label the system with the
refrigerant type designation
after filling
- Never exceed the maximum
fill level. The system must be
checked for leaks (pressure
test!) before filling. The system
must be checked for leaks once
more after filling and before
commissioning. Check for leaks
again when leaving the work
space.
•
Labelling when shutting down
If a unit must be taken out of
operation and the refrigerant
must be disposed of, the unit
must be labelled with the date
and a signature. Ensure that the
note remains attached to the
combustible refrigerant.
•
Transportation of units
which contain combustible
refrigerants
National provisions must be
observed.
•
Storing of units which contain
combustible refrigerant
National provisions must be
observed.
•
Transportation without the
original packaging
If the units are transported
without the original packaging,
they must be packed in such a
way that mechanical damage
is prevented. The units must be
transported upright.
9
Содержание CMK 2950
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