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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 refriger-
ant supplier in the correct recovery cylinder,and the rele-
vant Waste Transfer Note arranged. Do not mix refrigerants
in recoveryunits and especially not in cylinders.
If compressors or compressor oils are to be removed, en-
sure 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 car-
ried out prior to returning the compressor to the suppliers.
GB
Only electric heating to the compressor body shall be em-
ployed 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 refrigerating equipment
repair procedures is required when equipment with flam-
mable refrigerants is affected.
In many countries, this training is carried out by national
training organisations that are accredited to teach the rele-
vant national competency standards that may be set in leg-
islation.
The achieved competence should be documented by a cer-
tificate.
Training
The training should include the substance of the following:
Information about the explosion potential of flammable
refrigerants to show that flammables may be dangerous
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