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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.
9 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 refrig-
erants 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 refriger-
ant. It is essential that electrical power is available before
the task is commenced.
GB
a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure that :mechan-
ical handling equipment is available, if required, for han-
dling refrigerant cylinders; all personal protective equip-
ment 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 appro-
priate standards.
d) Pump down refrigerant system,if possible.
e) If a vacuum is not possible, make a manifold so that re-
frigerant 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 liq-
uid charge).
i) Do not exceed the maximum working pressure of the cyl-
inder,even temporarily.
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