Daikin ATXC25B/ARXC25B 104363 - Инструкция по эксплуатации - Страница 25

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English

Decommissioning

Before carrying out this procedure, it is essential that the technician is completely familiar with the 
equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. 
Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is 
required prior to re-use of reclaimed refrigerant. It is essential that electrical power is available before the 
task is commenced.
a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure that:

• mechanical handling equipment is available, if required, for handling refrigerant cylinders;
• all personal protective equipment is available and being used correctly;
• the recovery process is supervised at all times by a competent person;
• recovery equipment and cylinders conform to the appropriate standards.

d) Pump down refrigerant system, if possible.
e)  If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of 

the system.

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 over

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ll cylinders. (No more than 80 % volume liquid charge).

i)  Do not exceed the maximum working pressure of the cylinder, even temporarily.
j)   When the cylinders have been 

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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 off.

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

cleaned and checked.

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 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 

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ammable 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 

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ammable 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.