•
Label the system when fully charged (unless already
labelled).
•
Make sure not to fill the cooling system excessively.
•
Before recharging the system, the pressure must be
tested with OFN. A leak test must be performed after
the charging operations but before commissioning. Be
-
fore leaving the site, perform an additional leak test.
Dismantling
Before performing this procedure, it is essential that the
technician has become familiar with the equipment and
the relative details.
It is generally recommended that all refrigerants be ex
-
tracted in a safe manner.
Before performing the operation, take a sample of oil and
refrigerant should an analysis be necessary before re
-
using the regenerated refrigerant. Before performing the
operation, check the availability of electricity.
•
Become familiar with the equipment and how it func-
tions.
•
Electrically isolate the system.
Before attempting the procedure, check that:
•
The mechanical manipulation equipment is available, if
necessary, to handle refrigerant tanks;
•
All the personal protection equipment is available and
employed correctly;
•
The recovery procedure is monitored at all times by
skilled personnel;
•
The equipment for recovery and recycling bottles meet
the relevant standards.
•
If possible, pump the cooling system.
•
If it is not possible to obtain a vacuum, make sure that
a collector removes the refrigerant from various parts
of the system.
•
Before recovery, make sure that the recycling bottle is
on the scale.
•
Start up the recovery machine and use it following the
instructions by the manufacturer.
•
Do not overfill the recycling bottles. (Not more than 80%
by volume of liquid filling.)
•
Do not exceed the maximum operating pressure of the
recycling bottles – even temporarily.
•
After the recycling bottles have been filled correctly
and the operation has been completed, ensure that the
recycling bottles and equipment are removed from the
place of use immediately, and that all shut-off valves on
the equipment are closed.
•
The extracted refrigerant is only allowed to be filled into
another refrigeration system if it has been cleaned and
checked.
Labelling
Equipment must be labelled reporting the dismantling
and emptying of the refrigerant.
Labels must be dated and signed.
Make sure all the equipment is labelled and reporting the
presence of flammable refrigerant.
Recovery
When removing the refrigerant from the system, please
adopt good practices to remove all refrigerants safely in
case of both assistance or decommissioning operations.
When extracting refrigerant in bottles, make sure to use
only suitable recycling bottles.
Ensure that the correct number of bottles for the total fill
-
ing quantity is available in the system.
All recycling bottles to be used are designed for the re
-
covered refrigerant and are labelled accordingly (i.e. as
special recycling bottles for the extraction of refrigerant).
The bottles must be equipped with a safety valve and as
-
sociated shut-off valves in proper condition.
Empty recycling bottles must be evacuated and, if possi
-
ble, cooled prior to recovery.
Recovery equipment must be perfectly functioning with
the respective instruction booklets at hand and they must
be suitable to recover flammable refrigerants. A series of
perfectly-functioning calibrates scales must also be available.
•
Flexible tubes must be equipped with leak-proof dis
-
connection fittings in good condition. Before using the
recovery machine, make sure it is in good condition,
maintained and that all associated electrical compo
-
nents are sealed to avoid combustion in case of a re
-
frigerant leak
Please contact the manufacturer in case of doubt.
The recovered refrigerant must be returned to the refrig
-
erant supplier in proper recycling bottles and associated
proof of disposal.
Never mix different refrigerants in the recovery equipment
and especially in the recycling bottles. If it is necessary to
remove compressors or compressor oils, make sure they
are evacuated to an acceptable level to make sure no
trace is left of the flammable refrigerant inside the lubri
-
cant. The evacuation process must be performed before
taking the compressors back to the suppliers.
The electric resistance must be used with the compressor
body only to accelerate this process.
Operations to discharge the oil from the system must be
performed in full safety.
Transport, mark and storage
1. Transport of equipment containing flammable refrig
-
erants. Compliance with transport regulations
2. Marking of equipment with symbols. Compliance with
local regulations.
3. Disposal of equipment employing flammable refrig-
erants. Compliance with national regulations.
4. Storage of equipment/devices. The equipment must
be stored in compliance with the instructions provided
by the manufacturer.
5. Storing packed (unsold) equipment. The protective
function of the packaging must be such that in the
event of mechanical damage to the equipment con
-
tained in the packaging, the refrigerant charge cannot
escape. The maximum number of elements that can
be stored together is determined by local regulations.
47
4 221 546 / 00
SafETy InSTRUCTIonS - R32
