Fral FSC25HP.4.3001 Manuel Technique page 33

6.3 Decommissioning
7 Information on maintenance by specialist operators only.
7.1 Checks to the area
7.1.1 Work procedure
7.1.2 General work area
7.1.3 Checking for presence of refrigerant
7.1.4 Presence of fire extinguisher
7.1.5 No ignition sources
The device has been designed and built to guarantee continuous operation. The duration of
some main components, such as the fan and the compressor, depends on the maintenance to
which they have been subjected.
Warning: The unit contains substances and components that are dangerous for the
environment (electronic components, refrigerant gas and oils). At the end of the useful life, in
case of dismantling of the unit, the operation must be performed by specialized refrigeration
personnel.
The unit must be assigned to special specialized centres for the collection and disposal of
equipment containing dangerous substances. The refrigerant and the lubricating oil contained
in the circuit must be recovered, in accordance with the regulations in force in your country.
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary
to ensure that the risk of ignition is minimized. For repair to the refrigerating system, the following
precautions shall be complied with prior to conducting work on the system.
Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable
gas or vapour being present while the work is being performed.
All maintenance staff and others working in the local area shall be instructed on the nature of work
being carried out. Work in confined spaces shall be avoided. The area around the workspace shall
be sectioned off. Ensure that the conditions within the area have been made safe by control of
flammable material.
The area must be checked with a special explosimeter before and during work, so that the
technician can reliably verify the possible presence of potentially flammable atmospheres. It must
be ensured that the leak detection apparatus is suitable for use with flammable refrigerant fluids,
namely:
1) Suitable for detecting the type of gas used in the unit.
(R1234yf: 2,3,3,3- Tetrafluoropropene).
2) Suitable for use in Atex hazardous areas (at least zone 2).
It is forbidden to perform hot working on parts of the unit before this has not been completely
emptied of the flammable refrigerant fluid, and that it has been subjected to an accurate process of
reclamation by inert gas (flushing) in all parts of the circuit. In this regard, see the specific section
relating to the flushing operation. Only at the end of this operation can it be considered that the
refrigerant circuit and its parts no longer contain significant quantities of flammable fluid. In any
case, it is always necessary to have an appropriate flame extinguishing apparatus available.
Personnel who perform maintenance on the unit which requires direct intervention and / or exposure
of pipes that contain or have contained a flammable refrigerant fluid must not use tools or devices
that represent a source of ignition.
All possible ignition sources must be kept away from the place of maintenance, repair, removal and
disposal, operations during which the flammable refrigerant fluid could be accidentally released into
the surrounding space
M.FSC25HP.4.3001-01 Manual _ITA_UK_DE_FR_ES - 01/08/2023
EN
33