Split-type room air conditioner / Installation Manual
55 / 120 EN
13
Information servicing
8. Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit 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 flammable refrigerants:
t
the charge size is in accordance with the room size within which the refrigerant containing parts are
installed;
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the ventilation machinery and outlets are operating adequately and are not obstructed;
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if an indirect refrigerating circuit is being used, the secondary circuits shall be checked for the
presence of refrigerant; marking to the equipment continues to be visible and legible.
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marking and signs that are illegible shall be corrected;
t
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
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the components are constructed of materials which are inherently resistant to being
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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 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, and 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:
t
that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking
t
that there no live electrical components and wiring are exposed while charging, recovering or purging
the system;
t
that there is continuity of earth bonding.
10. Repairs to sealed components
10.1 During repairs to sealed components, all electrical supplies shall be disconnected from the
equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely
necessary to have an electrical supply to equipment during servicing, then a permanently
operating form of leak detection shall be located at the most critical point to warn of a potentially
hazardous situation.
10.2 Particular attention shall be paid to the following to ensure that by working on electrical
components, the casing is not altered in such a way that the level of protection is affected. This
shall include damage to cables, excessive number of connections, terminals not made to original
specification, damage to seals, incorrect fitting of glands, etc.
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