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Cylinders shall be kept upright.
Extreme care shall be taken not to overfill the refrigeration system.
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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 contained in them.
Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
Label the system when charging is complete (if not already).
Decommissioning
Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas.
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 good practice that all
b.
Isolate system electrically.
a.
Become familiar with the equipment and its operation.
c.
Before attempting the procedure, ensure that:
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.
d.
Pump down refrigerant system, if possible.
various parts of the system.
e.
If a vacuum is not possible, make a manifold so that refrigerant can be removed from
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.
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.
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.
Labelling
Equipment shall be labelled stating that it has been de-commissioned and emptied of
refrigerant. The label shall be dated and signed. For appliances containing flammable
refrigerants, ensure that there are labels on the equipment stating the equipment contains
flammable refrigerant.
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