DC Inverter U-match Series Cassette Type Unit
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used. This shall be reported to the owner of the equipment so all parties are
advised.
Initial safety checks shall include:
(1) That capacitors are discharged: this shall be done in a safe manner to avoid
possibility of sparking.
(2) That no live electrical components and wiring are exposed while charging,
recovering or purging the system.
(3) That there is continuity of earth bonding.
5.4.2 Repairs to Sealed Components
5.4.2.1 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 si tuation.
5.4.2.2 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 notmade to original specification, damage to seals,
incorrect fitting of glands, etc.
Ensure that apparatus is mounted securely.
。
Ensure that seals or sealing materials have not degraded such that they no
longer serve the purpose of preventing the ingress of flammable atmospheres.
Replacement parts shall be in accordance with the manufactur
er’s specifications.
Notice
：
The use of silicon sealant may inhibit the effectiveness of
some types of leak detection equipment. Intrinsically safe components do not
have to be isolated prior to working on them.
