90
User manual
Room air conditioner - IMOTO X
EN
APPENDIX FOR REFRIGERANT R290/R32
system.
h. Make sure that cylinder is situated on the scales before recovery takes place.
i. Start the recovery machine and operate in accordance with manufacturer’s instructions.
j. Do not overfill cylinders. (No more than 80 % volume liquid charge).
k. Do not exceed the maximum working pressure of the cylinder, even temporarily.
l. 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.
m. Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned
and checked.
10. LABELLING
Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label
shall be dated and signed. Ensure that there are labels on the equipment stating the equipment contains
flammable refrigerant.
11. RECOVERY
When removing refrigerant from a system, either for servicing or decommissioning, il is recommended good
practice that all refrigerants are removed safely. 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 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 il 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.
lf 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 healing to the compressor
body shall be employed to accelerate this process. When oil is drained from a system, il shall be carried out
safely.
