Original User Manual – AREBOS Mini Heat Pump
20
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.
20 Transport of equipment containing flammable refrigerants
Determined by local regulations.
21 Disposal of equipment using flammable refrigerants
See national regulations.
22 Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer’s instructions.
23 Storage of packed (unsold) equipment
Storage package protection should be constructed such that mechanical damage to the equipment
inside the package will not cause a leak of the refrigerant charge.
The maximum number of pieces of equipment permitted to be stored together will be determined by
local regulations.
24 Competence of service personnel
General
Special training additional to usual information for refrigerating appliance installation, repair,
maintenance and decommission procedures is required when an appliance with flammable
refrigerants is affected.
In many countries, the training of these procedures is carried out by national training organizations
or manufacturers that are accredited to teach the relevant national competency standards that may
be set in legislation.
The achieved competence should be documented by a certificate.
25 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 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 concepts:
Unventilated –Safety of the appliance does not depend on ventilation of the housing.
Switching off the appliance or opening of the housing has no significant effect on the safety.
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