1
1-11-20
10. 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 refrigerants 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 refrigerant.
• It is essential that electrical power is available before the task is commenced.
a) Become familiar with the equipment and its
operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure
that:
• 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.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold
so that refrigerant 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 overfi ll cylinders. (No more than
80 % volume liquid charge).
i) Do not exceed the maximum working
pressure of the cylinder, even
temporarily.
j) When the cylinders have been fi lled
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.
k) Recovered refrigerant shall not be
charged into another refrigeration
system unless it has been cleaned and
checked.
• Electrostatic charge may accumulate and create a hazardous condition when charging or
discharging the refrigerant. To avoid fi re or explosion, dissipate static electricity during transfer by
grounding and bonding containers and equipment before charging/discharging.
11. 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 fl ammable refrigerant.
SM830266-00_大洋州向けR32シングルTD&SM.indb 20 18/03/29 10:20:12
To Next Page
Loading...
