Handleiding
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04
When removing refrigerant from a system,
either for servicing or decommissioning, it
is recommended that all refrigerants are
removed safely.
When transferring refrigerant into cylinders,
ensure that only appropriate refrigerant
recovery cylinders are used. Ensure that the
correct number of cylinders for holding the
total system charge is available. All
cylinders to be used are designated for the
recovered refrigerant and labeled for that
refrigerant (i.e. special cylinders for the
recovery of refrigerant). Cylinders shall be
complete, with pressure-relief valves and
associated shut-off valves in good working
order. Empty recovery cylinders are
evacuated and, if possible, cooled before
recovery occurs.
Recovery equipment shall be in good
working order and have an easily accessible
set of instructions concerning the
equipment . and the equipment shall be
suitable for the recovery of all appropriate
refrigerants including, when applicable,
flammable refrigerants. In addition, a set of
calibrated weighing scales shall be available
and in good working order. Hoses shall be
complete with leak-free disconnect
couplings and in good condition. Before
using the recovery machine, check that it is
in satisfactory working order, has been
properly maintained and that any associated
electrical components are sealed to prevent
ignition in the event of a refrigerant release.
Consult the manufacturer if assistance is
required.
The recovered refrigerant shall be returned
to the refrigerant supplier in the correct
recovery cylinder, and the relevant waste
transfer note arranged. Do not mix
refrigerants in recovery units and especially
not in cylinders.
If compressors or compressor oils will be
removed, ensure that they have been
evacuated to an acceptable level to make
certain that flammable refrigerant does not
remain within the lubricant. The evacuation
process shall be carried out prior to
returning the compressor to the suppliers.
Electric heating will only be employed on
the compressor body to accelerate this
process. When oil is drained from a system,
it shall be carried out safely.
The maximum operating pressure of the
aplication is 43 bar, which must be
considered when connecting to any
condenser unit or evaporator unit.
The application shall only be connected to
an appliance suitable for the same
refrigerant.
The units (8-18kW) are partial unit air
conditioners, complying with partial unit
requirements of this International Standard,
and must only be connected to other units
that have been confirmed as complying to
corresponding partial unit requirements of
this International Standard.
Ensure that contamination of different
refrigerants does not occur when using
charging equipment. Hoses or lines shall be
as short as possible to minimise the amount
of refrigerant they contain.
Cylinders shall be kept upright.
Ensure that the refrigeration system is
grounded prior to charging the system with
refrigerant.
Label the system when charging is
complete (if it is not already labeled).
Take extreme care not to overfill the
refrigeration system.
Prior to recharging the system it shall be
pressure tested with OFN. The system shall
be leak tested on completion of charging
but prior to commissioning. A follow up leak
test shall be carried out prior to leaving the
site.
Before carrying out this procedure, it is
essential that the technician is completely
familiar with the equipment and all its detail.
It is recommended that all refrigerants are
recovered safely. Prior to the task being
carried out, an oil and refrigerant sample
shall be taken in case analysis is required
prior to re-use of reclaimed refrigerant. It is
essential that electrical power is available
before the task is commenced.
a) Become familiar with the equipment and its
operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure that:
– mechanical handling equipment is available, if
required, for handling refrigerant cylinders;
– all personal protective equipment is available
and being used correctly;
– the recovery process is supervised at all
times by a competent person;
– recovery equipment and cylinders conform to
the appropriate standards.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold
so that refrigerant can be removed from various
parts of the system.
f) Make sure that the cylinder is situated on the
scales before recovery takes place.
g) Start the recovery machine and operate it in
accordance with the manufacturer's
instructions.
h) Do not overfill cylinders. (No more than 80 %
volume liquid charge).
i) Do not exceed the maximum working
pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly
and the process has been completed, make
sure that the cylinders and the equipment are
removed from site promptly and all isolation
valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged
into another refrigeration system unless it has
been cleaned and checked.
Equipment shall be labeled stating that it
has been de-commissioned and emptied of
refrigerant. The label shall be dated and
signed. Ensure that there are labels on the
equipment stating the equipment contains
flammable refrigerant.
WARNING
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Productinformatie
| Merk | Midea |
| Model | V8M-160WV2N8 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11133 MB |
