Air-to-water Heat Pump
8
MONOBLOC
TYPE
NOTE
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If any hot work is to be conducted on the refrigeration equipment or any associated
parts,appropriate re extinguishing equipment shall be available to hand. Have a dry
powder or CO2 re extinguisher adjacent to the charging area.
Where electrical components are being changed, they shall be t for the purpose
and to the correct specification. 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 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;
– 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
components, unless the components are constructed of materials which are inherently
resistant to being corroded or are suitably protected against being so corroded.
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 whiule charging, recovering or purging the system; that there
is continuity of earth bonding.
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