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should safely disperse any released refrigerant and preferably expel it
externally into the atmosphere.
6. Checks to the refrigeration equipment:
Where electrical components are being changed, they shall be fi t for the purpose
and to the correct specifi cation. At all times the manufacturer's maintenance
and service guidelines shall be followed. If in doubt, consult the manufacturer's
technical department for assistance. The following checks shall be applied to
installations using fl ammable refrigerants:
•
The charge size 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.
•
Refrigeration pipe or components are installed in a position where they
are unlikely to be exposed to any substance which may corrode refrigerant
containing components, unless the components are constructed of
materials which are inherently resistant to being corroded or are suitably
protected against being so corroded.
7. 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
compromise 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.
•
Keep continuity of earthing.
INSPECTION OF CABLE
Check the cable for wear, corrosion, overvoltage, vibration and check if there
are sharp edges and other adverse effects in the surrounding environment.
During the inspection, the impact of aging or the continuous vibration of the
compressor and the fan on it should be taken into consideration.
88
GB
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