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If in doubt consult the manufacturer’s technical
department for assistance.The following checks
shall be applied to installations using flammable
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; marking to the equipment continues
to be visible and legible. Markings and signs that
are illegible shall be corrected; refrigeration pipe or
components are installed in a position where they
are unlikely to be exposed to any substance which
may corrode refrigerant containing compo nents,
unless the components are constructed of materials
which are inherently resistant to being corroded or
are suitably protected against being so corroded.
1.8 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 there no live
electrical components and wiring are exposed while
charging, recovering or purging the system; that
there is continuity of earth bonding.
2 REPAIRS TO SEALED COMPONENTS
