Black & Decker BXAC9000E Instructions Manual page 12

ENGLISH (Original instructions)
into another refrigeration system unless it
has been cleaned and checked.
LABELLING
- Equipment shall be labelled stating that it has
been decommissioned and emptied of refrig-
erant. The label shall be dated and signed.
- Ensure that there are labels on the equipment
stating the equipment contains flammable
refrigerant.
RECOVERY
- When removing refrigerant from a system,
either for servicing or decommissioning, it is
recommended good practice that all refriger-
ants 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 cylin-
ders for the recovery of refrigerant). Cylinders
shall be complete with pressure relief valve
and associated shutoff valves in good working
order. Empty recovery cylinders are evacu-
ated 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 flammable
refrigerants. In addition, a set of calibrated
weighing scales shall be available and in good
working order. Hoses shall be complete with
leakfree 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 evac-
uated to an acceptable level to make certain
that flammable refrigerant does not remain
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within the lubricant. The evacuation process
shall be carried out prior to returning the com-
pressor 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.
COMPETENCE OF SERVICE
PERSONNEL
GENERAL
- Special training additional to usual refrigerat-
ing equipment repair procedures is required
when equipment with flammable refrigerants
is affected.
- In many countries, this training is carried
out by national training organisations that
are accredited to teach the relevant national
competency standards that may be set in
legislation.
- The achieved competence should be docu-
mented by a certificate.
TRAINING
- The training should include the substance of
the following:
- Information about the explosion potential of
flammable refrigerants to show that flamma-
bles may be dangerous when handled without
care.
- Information about potential ignition sources,
especially those that are not obvious, such
as lighters, light switches, vacuum cleaners,
electric heaters.
- Information about the different safety con-
cepts:
- Unventilated – (see Clause GG.2) Safety of
the appliance does not depend on ventilation
of
- the housing. Switching off the appliance or
opening of the housing has no significant ef-
fect on the safety. Nevertheless, it is possible
that leaking refrigerant may accumulate inside
the enclosure and flammable atmosphere will
be released when the enclosure is opened.
- Ventilated enclosure – (see Clause GG.4)
Safety of the appliance depends on ventilation
of the housing. Switching off the appliance
or opening of the enclosure has a significant
effect on the safety. Care should be taken to
ensure a sufficient ventilation before.
- Ventilated room – (see Clause GG.5) Safety