As with all commercial products of this type, it is the responsibility of the user/owner of the equipment to apply test and
maintenance procedures to ensure compliance with local laws and regulations. Regular internal inspection by
qualified personnel will ensure reliable operation. Accumulated dirt and dust should be removed carefully. There
should be no loose cables within the unit. All plugable modules should be firmly seated in their sockets. Any
cables/sockets showing signs of wear or damage should be replaced. Any internal installation wiring should be kept to
a minimum and kept clear of the heatsink. The cooling fan is the only moving part; it has a normal lifespan of
approximately five years. Rotate the fan manually to assess its state of health. Keep the fan and its grille free from dust
and dirt. Do not use a high pressure pneumatic line for this purpose, as this may cause the fan to spin at high speed
and damage the fan motor and electronics.
PORTABLE APPLIANCE TESTING
This type of periodic testing should be carried out on all types of portable equipment in accordance with the policies set
down by the operating company. The following describes three tests that may be applied.
All tests must be performed with the equipment DISCONNECTED from the mains power supply.
1. Continuity. This is a qualification test between the input live and neutral. This tests the internal circuitry and fusing to
ensure that a valid circuit exists.
2. Earth Bond. This tests the continuity and capability of the earthing system to ensure (a) that a circuit exists and (b)
that it is capable of handling large fault currents.The test must be performed between the main input connector's
earthing point and the case of the dimmer. Any probe used must be sharp enough to break through the paint on the
case. The test must be repeated on the earth pin of each output socket to ensure that the socket provides a proper
earth for its load.
3. Insulation. This tests whether there is any fault within the product that could cause the case to become live. Tests
must be applied to both the input terminals and the output terminals/sockets. Because triacs will be 'off' when the
insulation test is performed, the internal circuitry and wiring after the triac will need to be connected in parallel with the
mains input terminals. Therefore the insulation test must be performed with all accessible lives and neutrals paralleled
together: each output socket must have its live and neutral connector shorted together, joined with all other outlets and
finally joined with the shorted input phase and neutral terminals. This represents a single terminal to which a high
voltage is applied with respect to the earth terminal. All circuit breakers must be 'on' for this test.
LightProcessor Paradime, all variants, version 21, September 2003
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MAINTENANCE
