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temporary solution must be used. This should be reported to the owner of the equipment so
as to inform all parties.
During initial safety checks, make sure
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that capacitors are unloaded–this must be done in a safe manner to avoid sparks;
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that no live wiring or electrical components are exposed while loading, recovering, or
purging the system;
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that there is continuity in the earth connection.
2. Repair of sealed components
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During the repair of sealed components, all power supplies should be disconnected from
the equipment being worked on prior to any removal of sealed covers, etc. If it is absolutely
necessary to have a power supply to the equipment during service, then a permanently
operating form of leak detection should be placed at the most critical point to warn of a
potentially hazardous situation.
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Particular attention must be paid to the following to ensure that, when working on electrical
components, the housing is not altered in such a way as to affect safety. This must include
damage to cords, an excessive number of connections, terminals not conforming to the
initial specification, damage to seals, incorrect fitting of the stuffing box, etc.
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Ensure that the instrumentation is securely mounted.
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Ensure that seals or sealing materials have not degraded until no longer being useful to
preventing the penetration of flammable atmospheres. Spare parts must be in accordance
with the manufacturer's specifications.
NOTE:
the use of silicone sealant may inhibit the effectiveness of some types of leak-
detection equipment. Intrinsically safe components do not have to be isolated before work.
3. Repair of intrinsically safe components
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Do not apply any permanent inductive or capacitive load to the circuit without ensuring
that it will not exceed the permissible voltage and current rating for the equipment in use.
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Intrinsically safe components are the only type of components that can be worked on
in a flammable atmosphere. The test instrumentation must have the correct assigned
features.
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Replace components only with parts specified by the manufacturer. Other parts can ignite
the refrigerant in the atmosphere from a leak.
4. Wiring
Verify that the wiring is not subject to wear, corrosion, excessive pressure, vibration, sharp
edges, or any other environmental effects. The verification should also take into account the
effects of ageing or continuous vibration from sources such as compressors or fans.
5. Detection of flammable refrigerants
Under no circumstances should potential ignition sources be used in the search for or detection
FORCECLIMA 7100 SOUNDLESS
ENGLISH
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