Black & Decker BXAC40018GB Original Instructions Manual page 20

ENGLISH (Original instructions)
♦
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 recovered
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 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 refrigerating 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. For appliances containing flammable
refrigerants, ensure that there are labels on
the equipment stating the equipment contains
flammable refrigerant.
20
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 instructions
concerning the equipment that is at hand
and shall be suitable for the recovery of all
appropriate refrigerants including, when
applicable, flammable refrigerants. 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 and that any associated electrical
components are sealed to prevent ignition
in the event of a refrigerant release. Consult
manufacturer if in doubt.
♦
The recovered refrigerant shall be returned to
the refrigerant supplier in the correct recovery
cylinder, and the relevant waste transfer note
arranged. DO NOT mix refrigerants in recovery
units and especially not in cylinders.
If compressors or compressor oils are to be
removed, ensure that they have been evacuated to
an acceptable level to make certain that flammable
refrigerant does not remain within the lubricant.
The evacuation process shall be carried out prior
to returning the compressor to the suppliers. Only
electric heating to the compressor body shall be
employed to accelerate this process. When oil is
drained from a system, it shall be carried out safely