Whirlpool 20K Manual Del Usuario página 44

- Hoses or lines shall be as short as
possible to minimize the amount of
refrigerant contained in them.
- Cylinders shall be kept upright.
- Ensure that the refrigeration system is
earthed prior to charging the system
with refrigerant.
- Label the system when charging is
complete (if not already).
- Extreme care shall be taken 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.
14.Decommissioning
Before carrying out this procedure,
it is essential that the technician is
completely familiar with the equipment
and all its detail. It is recommended
good practice 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 cylinder is situated
on the scales before recovery takes
place.
g. Start the recovery machine and
operate in accordance with
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 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.
15.Labelling
Equipment shall be labelled 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.
16.Recovery
When removing refrigerant from
a system, either for servicing or
decommissioning, it is recommended
good practice that all refrigerants are
removed safely. When transferring
refrigerant into cylinders, ensure that
only appropriate refrigerant recovery
cylinders are employed. 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 labelled
for that refrigerant (i.e. special cylinders
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