Hisense D12CW Instruction Manual page 8

2.2.8 Checks to the refrigeration equipment
Where electrical components are changed, they should be fit for purpose and meet the
correct specifications. The manufacturer's maintenance and service guidelines should be
followed at all times. If in doubt, consult the manufacturer's technical department for
assistance.
The following checks should be applied to installations using flammable refrigerants:
– The charge size should be in accordance with the room size within which the refrigerant-
containing parts are installed;
– The ventilation machinery and outlets should be operating adequately, without any
obstruction;
– If an indirect refrigerating circuit is being used, the secondary circuit should be checked for
the presence of refrigerant;
– Markings on the equipment should be kept visible and legible. Markings and signs that are
illegible should be corrected;
– the refrigeration pipe or components should be 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 such corrosion.
2.2.9 Checks to electrical components
Repair and maintenance to electrical components should include initial safety checks and
component inspection procedures. If a fault exists that could compromise one's safety, then
no electrical supply should be connected to the circuit until the fault is satisfactorily dealt
with. If the fault cannot be corrected immediately but it is necessary to continue operation,
an adequate temporary solution should be used. This should be reported to the owner of the
equipment, so all parties are informed.
Initial safety checks should include:
-those capacitors are discharged: this should be done in a safe manner to avoid the possibility
of sparking;
-ensuring that there are no live electrical components or wiring exposed while charging,
recovering or purging the system;
-checking that there is continuity of earth bonding.
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