Bedienungsanleitung Gree K5NNA2C (Seite 39 von 40) (Englisch)

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f) Make sure that cylinder is situated on the scales before recovery takes place.

g) Start the recovery machine and operate in accordance with manufacturer's instructions.

h) Do not overfill cylinders. (No more than 80 % volume liquid charge).

Labelling

j) When the cylinders have been filled correctly and the process completed, make sure

that the cylinders and the equipment are removed from site promptly and all isolation

valves on the equipment are closed off.

k) Recovered refrigerant shall not be charged into another refrigeration system unless it

has been cleaned and checked.

i) Do not exceed the maximum working pressure of the cylinder, even temporarily.

Equipment shall be labelled stating that it has been de-commissioned and emptied of

refrigerant. The label shall be dated and signed. For appliances containing flammable

refrigerants, ensure that there are labels on the equipment stating the equipment contains

flammable refrigerant.

Recovery

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 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.

When removing refrigerant from a system, either for servicing or decommissioning,

it is recommended good practice that all refrigerants are removed safely.

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.

Specialist’s Manual

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