Sharp BU Series - Page 10

EN-8
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been lled 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 o󰀨.
k) Recovered refrigerant shall not be charged into another REFRIGERATING
SYSTEM unless it has been cleaned and checked.
• Labelling: 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 removing refrigerant from a system, either for servicing or
decommissioning, it 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 is 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-o󰀨 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 the ammable refrigerant. If in doubt, the manufacturer should be consulted.
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.
The recovered refrigerant shall be processed according to local legislation 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 ammable refrigerant
does not remain within the lubricant. The compressor body shall not be heated
by an open ame or other ignition sources to accelerate this process. When oil is
drained from a system, it shall be carried out safely.
SAFETY PRECAUTIONS (Continued)