[45]
EN
DEHUMIDIFIER
operation, an 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 discharged: this shall be done in a safe manner to
avoid possibility of sparking;
That there no live electrical components and wiring are exposed while
charging, recovering or purging the system;
That there is continuity of earth bonding.
9. Repairs to sealed components
• 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.
• 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 not made 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 manufacturer’s specifications.
NOTE:
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.
10. Repair to intrinsically safe components
• Do not apply any permanent inductive or capacitance loads to the
circuit without ensuring that this will not exceed the permissible
voltage and current permitted for the equipment in use.
• Intrinsically components are the only types that can be worked on
while live in the presence of a flammable atmosphere. The apparatus
test shall be at the correct rating.
