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Safety precautions /
Lt
CAUTION
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
overfill 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 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.
k) Recovered refrigerant shall
not
be charged into another refrigeration system
unless
it
has been cleaned and checked.
15.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.
16.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
is 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.
• Empty recovery cylinders are evacuated and,
if
possible, cooled before
recovery occurs.
• The recovery equipment shall be in good working
order
with a
set
of
-10-
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