Saneo JHS-A19-07KR2/E Mode D'emploi page 49

contain or have contained flammable refrigerants shall use ignition sources in a manner that may
lead to a risk of fire or explosion. All possible sources of ignition, including a person smoking a
cigarette, should be located far enough from the installation, repair, removal and disposal site
during the period when the flammable refrigerant can flow into the surrounding space. Before
carrying out the work, the area surrounding the equipment must be examined to ensure that
there is no risk of ignition or risk of ignition. "No smoking" signs should be displayed.
- Ventilated areas
Make sure that the area is outdoors or adequately ventilated before working on the system or
performing any work that causes heat. A ventilation of a given degree must continue during the
work. Ventilation should safely disperse any refrigerant emitted and preferably expel it to the
outside into the atmosphere.
- Audits of refrigeration equipment
When electrical components are changed, they must be adapted to their intended use and to the
correct specification. The manufacturer's maintenance and service guidelines must be followed
at all times. In case of doubt, consult the manufacturer's technical support service.
The following checks shall be applied to installations using flammable refrigerants :
- The size of the charge is in accordance with the size of the room in which the elements
containing a refrigerant are installed ;
- the machinery and ventilation valves are working properly and are not obstructed;
- if an indirect refrigeration circuit is used, the secondary circuit must be checked for the
presence of refrigerant;
- the marking of the equipment continues to be visible and legible. Marks and symbols
that are illegible must be corrected;
- the refrigeration pipe or components are installed in a position where they are not likely
to be exposed to a substance that may corrode elements containing refrigerants, unless
these elements are constructed with materials that are inherently resistant to corrosion
or that are adequately protected against corrosion
- Verifications of electrical devices
Repair and maintenance operations on electrical components must include initial safety checks
and component inspection procedures. In the presence of a fault that may compromise safety, no
power supply shall be connected to the circuit until the fault has been satisfactorily addressed. If
the defect cannot be corrected immediately but it is necessary to continue the operations, an
appropriate temporary solution must be used. This should be communicated to the owner of the
equipment so that all parties involved are aware of it.
Initial security checks should include :
- checking that the capacitors are discharged: this must be done in a safe way to avoid any
possibility of sparks;