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M-4
13. 3 When making a service call
For the Toshiba service network, refer to the back cover of this instruction manual. If defective
conditions are encountered, please contact the Toshiba service section in charge via your
Toshiba dealer.
When making a call for servicing, let us know the contents of the rating plate on the right side of
the inverter and connection of options besides details of the trouble.
13. 4 When retaining the inverter out of operation
When retaining the inverter out of operation temporarily or for a long time, pay heed to the
following points.
1. Keep the inverter in a well-ventilated place that is free from high temperature, high humidity,
dust and metallic particles.
2. For the inverter whose printed circuit boards are covered with the charge-proof cover (black),
don't remove the cover throughout retention. However, be sure to remove the cover before
the inverter is turned on.
3. If the large-capacity electrolytic condenser mounted in the inverter is left without power supply
for a long time, it deteriorates in the characteristic.
If the inverter won't be used for a long time, turn it on for 5 hours or more once every another
years in order to recover the characteristic of the electrolytic condenser. At the same time,
check operation status of the inverter. For turning on the inverter very seldom, it is
recommended to use a step-up transformer to supply power at a low voltage first and to raise
the voltage gradually.