Toyotomi SONZAI Series User Manual page 63

DEHUMIDIFIER
• That capacitors are discharged: this shall be done in a safe manner to avoid
possibility of sparking.
• That no live electrical components and wiring are exposed while charging,
recovering or purging the system.
• That there is continuity of earth bonding.
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 specifi cation, damage to seals,
incorrect fi tting of glands, etc.
• Ensure that the apparatus is mounted securely.
• Ensure that seals or sealing materials have not degraded to the point that
they no longer serve the purpose of preventing the ingress of fl ammable
atmospheres.
The parts should be replaced according to the manufacturer's instructions.
NOTE: The use of silicon sealant can inhibit the effectiveness of some types
of leak detection equipment. Intrinsically safe components do not have to be
isolated prior to working on them.
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 safe components are the only types that can be worked on while
live in the presence of a fl ammable atmosphere. He test apparatus shall be at
the correct rating.
Replace components only with parts specifi ed by the manufacturer. Other
parts may result in the ignition of refrigerant in the atmosphere from a leak.
63
GB