are illegible shall be corrected; refrigeration pipe or com-
ponents are installed in a position where they are unlikely
to be exposed to any substance which may corrode refrig-
erant containing components, unless the components are
constructed of materials which are inherently resistant to
being corroded or are suitably protected against being so
corroded.
1.9 Checks to electrical devices
Repair and maintenance to electrical components shall in-
clude initial safety checks and component inspection pro-
cedures. 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
GB
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 dis-
charged: this shall be done in a safe manner to avoid pos-
sibility of sparking; that there no live electrical components
and wiring are exposed while charging, recovering or purg-
ing the system; that there is continuity of earth bonding.
2 REPAIRS TO SEALED COMPONENTS
2.1 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.
2.2 Particular attention shall be paid to the following to en-
sure that by working on electrical components, the casing
is not altered in such a way that the level of protection is
affected.
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