DC Inverter
X-
Series for R410A Unitary Split Air Conditioner
37
(5) If a vacuum is not possible, make a manifold so that refrigerant can be
removed from various parts of the system.
(6) Make sure that cylinder is situated on the scales before recovery takes
place.
(7) Start the recovery machine and operate in accordance with manufacturer's
instructions.
(8) Do not overfill cylinders. (No more than 80% volume liquid charge).
(9) Do not exceed the maximum working pressure of the cylinder, even
temporarily.
(10) 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.
(11) Recovered refrigerant shall not be charged into another refrigeration system
unless it has been cleaned and checked.
4.4.7 Labelling
Equipment shall be labelled stating that it has been decommissioned and
emptied of refrigerant. The label shall be dated and signed.
4.4.8 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 are available. All cylinders to be used
are designated for the recovered refrigerant and labelled for that refrigerant (i.e.
special cylinders for the recovery of refrigerant).
Cylinders shall be complete with pressure relief valve and associated shut-off
valves in good working order.
In addition, a set of calibrated weighing scales shall be available and in good
working order. Hoses shall be complete with leak-free disconnect couplings and in
good condition. Before using the recovery machine, check that it is in satisfactory
working order, has been properly maintained Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the
