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 refriger-
ant 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 com-
menced.
2
0
Decommissioning
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 flamma-
ble refrigerants, ensure that there are labels on the equipment stating the equipment
contains flammable refrigerant.
Labelling
Prior to recharging the system, it shall be pressure-tested with the appropriate purg-
ing gas. The system shall be leak-tested on completion of charging but prior to com-
missioning. A follow up leak test shall be carried out prior to leaving the site.
—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.
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●
●
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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.
Become familiar with the equipment and its operation.
Isolate system electrically.
Before attempting the procedure, ensure that:
a.
Pump down refrigerant system, if possible.
If a vacuum is not possible, make a manifold so that refrigerant can be removed
from various parts of the system.
Make sure that cylinder is situated on the scales before recovery takes place.
Start the recovery machine and operate in accordance with manufacturer's instruc-
tions.
Do not overfill cylinders. (No more than 80 % volume liquid charge).
Do not exceed the maximum working pressure of the cylinder, even temporarily.
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.
Recovered refrigerant shall not be charged into another refrigeration system unless
it has been cleaned and checked.
d.
e.
g.
h.
k.
i.
j.
f.
b.
c.
Specialist's Manual
