34 | CFW701
Troubleshooting and Maintenance
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DANGER!
Débranchez toujours l'alimentation principale avant d'entrer en contact avec
un appareil électrique associé au variateur.
Des tensions élevées peuvent encore être présentes, même après déconnexion
de l’alimentation.
Pour éviter les risques d’électrocution, attendre au moins 10 minutes après
avoir coupé l’alimentation
d’entrée pour que les condensateurs de puissance soient totalement
déchargées.
Raccordez toujours la masse de l'appareil à une terre protectrice (PE). Utiliser
la borne de connexion adéquate du variateur.
ATTENTION!
The electronic boards have electrostatic discharge sensitive components.
Do not touch the components or connectors directly. If necessary, first touch
the grounded metallic frame or wear a ground strap.
Do not perform any withstand voltage test!
If necessary, consult WEG.
The inverters require low maintenance when properly installed and operated. The
presents the main procedures and time intervals for preventive maintenance. The
provides recommended periodic inspections to be performed every
6 months after the inverter start-up.
Table 6.2:
Preventive maintenance
Maintenance
Interval
Instructions
Fan replacement
After 50.000 hours of operation.
(1)
Replacement procedure showed in
and
.
Electrolytic
capacitors
If the inverter
is stocked (not
being used):
“Reforming”
Every year from the
manufacturing date printed on
the inverter identification label
(refer to the
).
Apply power to the inverter (voltage
between 220 and 230 Vac, single-
phase or three-phase, 50 or 60 Hz)
for at least one hour. Then, disconnect
the power supply and wait at least 24
hours before using the inverter (reapply
power).
Inverter is
being used:
replace
Every 10 years.
Contact WEG technical support to
obtain replacement procedure.
(1)
The inverters are set at the factory for automatic fan control (P0352 = 2), which means that they will be turned on only
when the heatsink temperature exceeds a reference value. Therefore, the operating hours of the fan will depend on the
inverter usage conditions (motor current, output frequency, cooling air temperature, etc.). The inverter stores the number
of fan operating hours in the parameter P0045. When this parameter reaches 50000 operating hours, the keypad display
shows the alarm A0177.
