Anslut 025966 - Ventilation and Cooling System Checks; Electrical Component Repair

EN
34
refrigerant to minimise the risk of ignition.
The following safety measures should be
applied before and during the time a cooling
system is repaired.
• Working procedures – work should be
carried out according to established
procedures designed to minimise the risk
of ammable gas or vapor being present
in the environment where the work is
being carried out.
• Work area – all maintenance personnel
and other personnel working or present in
the area must be informed of the type of
work being carried out. Avoid working in
conned/enclosed areas. The area around
the workplace must be cordoned o.
Check that there are no ammable
materials in the work area.
• Checking for the presence of refrigerant
– prior to and during work, the work area
should be checked with an appropriate
refrigerant detector to immediately detect
a potentially ammable atmosphere.
Check that the refrigerant detector used is
suitable for ammable refrigerant – non-
sparking, adequately sealed and
intrinsically safe.
• Fire extinguisher – if hot work is to be
carried out on the refrigeration system or
its component parts, suitable re-ghting
equipment (powder or CO
2
extinguisher)
should be available.
• No sources of heat – under no
circumstances must sources of heat be
used in way that can result in a risk of re
and/or explosion during work that
involves exposure of conduits or
components that contain, or have
contained, ammable refrigerant. All
potential sources of heat, including lit
cigarettes, must be kept at a safe distance
from workplaces where installation,
repairs, dismantling, scrapping or other
work can involve the release of ammable
refrigerant Check before starting the work
that the area around the product is free
from ammable material and the risk of
ignition. Smoking prohibited signs must
be put up.
• Ventilation – make sure the workplace is
well ventilated (or if possible move the
product outdoors) before opening the
system or doing any hot work. The
ventilation or exhaust system must always
be running while work is in progress and
have a sucient capacity to safely remove
any released refrigerant, preferably to the
outdoor air.
• Checking the cooing system – when
replacing electrical components the
replacement components must be of the
right type and have the right technical
data. The manufacturer’s service and
maintenance instructions must always be
followed. Contact the manufacturer in the
event of any problems or questions.
Check the following on installations that
use ammable refrigerant.
– Check that the amount of refrigerant
does not exceed the permitted
amount for the room where the
product is installed.
– Check that the ventilation system is
working and that the ventilation
openings are not blocked.
– If an indirect refrigerant circuit is
used, check that there is refrigerant
in the secondary circuit.
– Check that all the markings on the
product are clearly visible and
legible. Replace any missing or
illegible markings.
– Check that piping and components
containing refrigerant are installed in
such a way as to minimise the risk of
exposure to corrosive substances, or
are made of corrosion-proof
materials, or provided with adequate
corrosion protection.
• Checking and repairing electrical
components – the following safety
measures should be taken when repairing
and maintaining electrical components.
Do not supply the system with voltage
until any faults that compromise safety
have been rectied. Find a temporary