25
ENGLISH
safely disperse any released refrigerant and preferably expel it externally into
the atmosphere.
8. Checks to the refrigerating equipment
Where electrical components are being changed, they shall be
fi
t for the pur-
pose and to the correct speci
fi
cation. At all times, the manufacturer’s mainte-
nance and service guidelines shall be followed. If in doubt, consult the manu-
facturer’s technical department for assistance.
The following checks shall be applied to installations using
fl
ammable refriger-
ants:
–
the actual refrigerant charge is in accordance with the room size within
which the refrigerant containing parts are installed.
–
the ventilation machinery and outlets are operating adequately and are
not obstructed.
–
if an indirect refrigerating circuit is being used, the secondary circuit shall
be checked for the presence of refrigerant.
–
marking to the equipment continues to be visible and legible. Markings
and signs that are illegible shall be corrected.
–
refrigerating pipe or components are installed in a position where they
are unlikely to be exposed to any substance which may corrode refriger-
ant containing components, unless the components are constructed of
materials which are inherently resistant to being corroded or are suitably
protected against being so corroded.
9. Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety
checks and component inspection procedures. If a fault exists that could com-
promise safety, then no electrical supply shall be connected to the circuit until
it is satisfactorily dealt with. If the fault cannot be corrected immediately but it
is necessary to continue operation, an adequate temporary solution shall be
used. This shall be reported to the owner of the equipment, so all parties are
advised.
Initial safety checks shall include:
•
that capacitors are discharged: this shall be done in a safe manner to
avoid possibility of sparking.
•
that no live electrical components and wiring are exposed while charging,
recovering or purging the system.
