DC Inverter U-match Series Duct Type Unit
72
(2) Isolate system electrically.
(3) Before attempting the procedure ensure that:
1) Mechanical handling equipment is available, if required, for handling
refrigerant cylinders.
2) All personal protective equipment is available and being used
correctly.
3) The recovery process is supervised at all times by a competent
person.
4) Recovery equipment and cylinders conform to the appropriate
standards.
(4) Pump down refrigerant system, if possible.
(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.
5.4.9 Labelling
Equipment shall be labelled stating that it has been de-commissioned and
emptied of refrigerant. The label shall be dated and signed. Ensure that there are
labels on the equipment stating the equipment contains flammable refrigerant.
