Decobus Handel EX301342AAA - Page 40

d) Marking to the equipment connues to be visible and legible. Markings and signs that are illegible shall be corrected.
e) Refrigeraon pipe or components are installed in a poson 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 being so corro
ded.
9) Checks to electrical devices
Repair and maintenance to electrical components shall include inal safety checks and component inspeon procedures. If
a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit un it is sasfactorily
dealt with. If the fault cannot be corrected immediately but it is necessary to connue operaon, an adequate temporary
soluon shall be used. This shall be reported to the owner of
the equipment so all pars are advised.
Inal safety checks shall include:
a) That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking.
b) That there no live electrical components and wiring are exposed while charging, recovering or purging the system.
c) That there is connuity of earth bonding.
2. Repairs to sealed components
1) During repairs to sealed components, all electrical supplies shall be disconnected from the equipme
nt 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 operang form of leak deteon shall be located at the most cal point to warn of a
potenally hazardous situaon.
2) Parular enon shall be paid to the following to ensure that by working on electrical components, the casing is not altered
in such a way that t
he level of proteon is aected. This shall include damage to cables, excessive number of connecons,
terminals not made to original specicaon, damage to seals, incorrect ng 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 prevenng the ingress
ofmmable atmospheres.
Replacement parts shall be in accordance with the man
ufacturer’s specicans.
NOTE: The use of silicon sealant may inhibit the eeveness of some types of leak den equipment. Intrinsically safe
components do not have to be isolated prior to working on them.
3. Repair to intrinsically safe components
Do not apply any permanent induve or capacitance loads to the circuit without ensuring that this will not exceed the
permissible voltage and current permied for the equipment in use.
Intrinsic
ally safe components are the only types that can be worked on while live in the presence of a mmable atmosphere.
The test apparatus shall be at the correct rang.
Replace components only with parts specied by the manufacturer. Other parts may result in the ignin of refrigerant in
the atmosphere from a leak.
4. Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibraon, sharp edges or any other adver
se
environmental eects. The check shall also take into account the eects of aging or connual vibraon from sources such a s
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