Maintenance - Alpes Technologies ALPIMATIC Manual De Instalación

When conducting inspection or maintenance operations, it is essential to comply with applicable
safety standards.
Before accessing any parts under voltage:
1) open the fuse-switch on the auxiliary circuits (ref. F1 on pages 33 and 34)
2) open the circuit breaker, switch or cut-off on the power circuit.
The capacitors are fitted with discharge resistors which reduce the residual voltage to 75V in 3
minutes (in compliance with applicable standards). Before short-circuiting the terminals and earthing
the capacitors,
Tightness of connections on the contactor terminals has to be done 2 months after
commissioning and then every 12 months. For the tightening torque of the contactor, please
refer to the contactor rating plate.
Capacitors are static devices, little maintenance is required. However, we recommend performing the
following checking annually:
check that the equipment is clean, as accumulated dust can hamper correct ventilation and
insulation.
check the condition of the contacts of switching devices (contactors, switches, etc.).
The contactors are heavy loaded during closing and opening on capacitive currents. We
ask for their replacement every 5 years.
remove dust and check the correct operation of the ventilation..
check the current delivered by the capacitor bank.
check the ventilation of the local where the equipment is installed (maximum temperature
40°C and an average value of 35°C during 24h must be respected)..
check the temperature inside the capacitor enclosure (maximum temperature 45°C and an
average value of 40°C during 24h must be respected).
It is necessary to make an annual thermal measurement on the components inside the
capacitor bank, in order to insure a preventive maintenance
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5 - MAINTENANCE

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