Daikin Sky Air FAA71BUV1B Service Manual page 11

FAA71+100BUV1B
Sky Air indoor units
ESIE22-01 – 2022.02
WARNING
▪
The area MUST be checked with an appropriate refrigerant detector prior to and
during work, to ensure the technician is aware of potentially toxic or flammable
atmospheres.
▪
Ensure that the leak detection equipment being used is suitable for use with all
applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
▪
Prior to and during work, the area MUST be checked with an appropriate
refrigerant detector capable of detecting R32 refrigerant, to ensure a work
environment free of refrigerant.
WARNING
▪
Equipment MUST be labelled stating that it has been de-commissioned and
emptied of refrigerant.
▪
The label MUST be dated and signed.
▪
For appliances containing flammable refrigerants, ensure that there are labels on
the equipment stating the equipment contains flammable refrigerant.
WARNING
Before carrying out refrigerant recovery procedure, it is essential that the technician
is completely familiar with the equipment and all its details. It is recommended good
practice that all refrigerants are recovered safely. Prior to the task being carried out,
an oil and refrigerant sample MUST be taken in case analysis is required prior to re-
use of recovered refrigerant. It is essential that electrical power is available before
the task is commenced.
▪
Become familiar with the equipment and its operation.
▪
Isolate system electrically.
▪
Ensure that mechanical handling equipment is available, if required, for handling
refrigerant cylinders.
▪
Ensure that all personal protective equipment is available and is used correctly.
▪
Ensure that the recovery process is supervised at all times by a competent
person.
▪
Ensure that recovery equipment and cylinders are conform to the appropriate
standards.
▪
If a vacuum is NOT possible, make a manifold so that refrigerant can be removed
from various parts of the system.
▪
Make sure that cylinder is situated on the scales before recovery takes place.
▪
Start the recovery machine and operate in accordance with instructions.
▪
Do NOT overfill the refrigerant cylinder, confirm with the supplier of the
refrigerant cylinder about maximum filling ratio if NOT mentioned on the
refrigerant cylinder itself.
▪
Do NOT exceed the maximum working pressure of the cylinder, NOT even
temporarily.
▪
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.
▪
Recovered refrigerant MUST NOT be charged into another refrigerating system
unless it has been cleaned and checked.
WARNING
All maintenance staff and others working in the local area MUST be instructed on the
nature of work being carried out.
1 Safety precautions
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Service manual
11