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Important safety instructions for GAS containing devices
Workplace checks.
Before starting work on installations containing flammable refrigerants, safety checks must be carried
out to ensure that the risk of fire is minimised. In the case of refrigeration system repair, the following
precautions should be taken before carrying out any work on the installation.
Work procedure
Work should be carried out under a controlled procedure to minimise the risk of flammable gases or
vapours being present while the work is being carried out.
Work area.
All maintenance personnel and others working in the area must be informed of the nature of the work
being carried out. Avoid working in enclosed spaces.
Check for the presence of refrigerant
Before and during work, the area should be checked with a suitable refrigerant detector to ensure that
the technician is aware of the existence 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,
properly sealed or intrinsically safe.
Presence of a fire extinguisher.
If any work is to be carried out on the refrigeration equipment or any part thereof, suitable fire extingui-
shing equipment must be available. Have a dry powder or CO2 fire extinguisher next to the loading area.
There are no sources of ignition.
No person performing work in connection with a refrigeration system involving exposure of any piping
shall use sources of ignition in such a manner as to cause a fire or explosion. All possible sources of igni-
tion, including cigarette smoking, shall be kept sufficiently far away from the installation, repair, removal
and disposal site, during which time refrigerant may be released into the surrounding space. Before work
is carried out, the area around the equipment must be inspected to ensure that there are no ignition
hazards or ignition risks. No smoking" signs shall be posted.
Ventilated area.
Ensure that the area is in the open air or adequately ventilated before accessing the system or perfor-
ming any hot work. A certain degree of ventilation must be maintained during the work period. Ventila-
tion should safely disperse any refrigerant that is released and preferably expel it outside into the at-
mosphere.
Checking refrigeration equipment.
When electrical components are replaced, they should be fit for purpose and to the correct specification.
The manufacturer's maintenance and service guidelines shall be followed at all times. If in doubt, consult
the manufacturer's technical department for assistance. The following controls shall apply to installa-
tions using flammable refrigerants.
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