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EN
www.newair.com 30
weighing scales should 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, this process should be carried
out safely.
COMPETENCE OF SERVICE PERSONNEL
General
• Procedural information additional to standard information regarding
refrigeration appliance installation, repair, maintenance, and decommission
procedures is required when an appliance with flammable refrigerants is in
question.
• Training for these procedures is carried out by national training
organizations and manufacturers that are accredited to teach relevant
national competency standards.
• The achieved competence should be documented by a certificate.
Training
Training should include the following:
• Information about the explosion potential of flammable refrigerants to show
that flammable substances may be dangerous when handled without care.
• Information about potential ignition sources, especially those that are not
obvious, such as light switches, vacuum cleaners, or electric heaters.
Information about various safety concepts:
• In the case of unventilated enclosure– (see Clause GG.2) Safety of the
appliance does not depend on ventilation of the appliance housing.
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