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Before leaving the work area, a tightness check must be carried out.
9. DECOMMISSIONING OF THE REFRIGERANT
Before performing this procedure, it is essential that the technician is familiar with
the equipment and all its details. It is good practice to recommend that all refrigerants
are safely recovered. Before carrying out the work, you need to pick up a sample of oil
and refrigerant in case analysis is required before reusing the regenerated refrigerant.
It is essential that electricity is available before the start of the activity.
a) Become familiar with the equipment and its operation.
b) Isolate the system electrically.
c) Before attempting the procedure, make sure that: mechanical handling equipment
is available, if necessary, for handling the refrigerant cylinders; all personal protective
equipment is available and used correctly; the recovery process is supervised at
all times by a competent person; recovery equipment and cylinders conform to
appropriate standards.
d) Depressurize the refrigerant system, if possible
e) If a vacuum is not possible, make a manifold so that the refrigerant can be removed
from various parts of the system.
f) Make sure the cylinder is on the scale before recovery takes place.
g) Start the recovery machine and operate according to the manufacturer’s instructions.
h) Do not overfill the cylinders. (Not more than 80% volumetric 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 equipment have been removed from the site
immediately and that all isolation valves on the equipment have been closed.
k) The recovered refrigerant must not be charged to another refrigeration system
unless it has been cleaned and checked.
10. LABELING
The equipment must be labeled stating that it has been taken out of service and
GB
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