Fral FSC25HP.4.3001 Manuel Technique page 34

7.1.6 Ventilated area
7.1.7 Checks to the refrigeration equipment
EN
7.1.8 Checks to electrical devices
7.2 Repairs to sealed components
7.3 Cabling
7.4 Detection of flammable refrigerants
During maintenance activities, continuous ventilation must be present, so that an accidental
dispersion of flammable refrigerant fluid can be diluted in the atmosphere. Please note that in any
case the dispersion in free air must be considered an extraordinary situation linked to events of an
involuntary or accidental nature
The replacement of the electrical parts of the unit must only be carried out by qualified personnel (see
EN 60079-14). The replacement must be carried out with original and homologous spare parts. Do
not proceed with any replacement if the appropriate spare part is not available. If in doubt, contact the
service centre.
The following checks must be carried out on appliances that use flammable refrigerant fluids:
a. that the ventilation devices and output function properly and are not obstructed;
b. if an indirect refrigeration circuit is used, the presence of refrigerant fluid in the secondary circuit
must be checked;
c. the marking on the appliance must remain visible and legible. Markings and graphic signs that
are illegible must be correct;
Initial safety checks and component examination procedures must be included in the repair and
maintenance of electrical components. IT IS FORBIDDEN to proceed with the power supply of the
unit until the fault has been resolved satisfactorily
Initial security checks must include:
- that the capacitors are discharged: this operation must be carried out safely to avoid the possibility
of creating sparks;
- that there are no live electrical components and that the cables are not exposed while charging,
recovering or bleeding the system;
- that there is continuity in the earth connection.
1) During repairs to sealed components, all power supplies must be disconnected from the appliance
being worked on before removing the sealed covers.
2) Particular attention must be paid to the following to ensure that, when working on the electrical
components, the casing does not alter so as to compromise the level of protection. Attention should
also be paid to damage to the cables, previous modifications of the circuits that are not consistent
with the technical documentation supplied with the unit., Damage to the gaskets, incorrect fixing of
the cable glands.
Make sure that the equipment is securely mounted.
Make sure that the gaskets and sealing materials have not deteriorated to the point that they are no
longer suitable for the purpose of preventing development in flammable atmospheres. Spare parts
must be in accordance with the manufacturer's prescriptions.
NOTE The use of silicone sealant can impair the effectiveness of some types of spill detection
instruments.
Check that the cables are not subject to wear, corrosion, excessive pressure, vibrations, sharp
edges or any other situation that could compromise their continuity and / or insulation. The check
shall also take into account the effects of aging or continual vibration from sources such as
compressors or fans.
Under no circumstances shall potential sources of ignition be used in the searching for or detection
of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.
34 M.FSC25HP.4.3001-01 Manual _ITA_UK_DE_FR_ES - 01/08/2023