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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 recover 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.
Important Considerations
1. The air conditioner must be installed by professional personnel and the Installation manual is used only for
the professional installation personnel! The installation specifications should be subject to our after-sale
service regulations.
2. When filling the combustible refrigerant, any of your rude operations may cause serious injury or injuries to
human body and objects.
3. A leak test must be done after the installation completed.
4. It is a must to do the safety inspection before maintaining or repairing an air conditioner using combustible
refrigerant in order to ensure that the fire risk is reduced to minimum.
5. It is necessary to operate the machine under a controlled procedure in order to ensure that any risk arising
from the combustible gas or vapor during the operation is reduced to minimum.
6. Requirements for the total weight of filled refrigerant and the area of a room to be equipped with an air
conditioner (are shown as in the following Tables GG.1 and GG.2)
6
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