B&C Technologies SA Series Industrial - Manual (Page 58)

MAINTENANCE
5-5
kind is not covered by the manufacturer warranty. Locate the pump below the washer’s
injection point to prevent siphoning of chemicals into the machine.
Perform daily and periodic inspection to avoid trouble and keep reliable operation for a long
time. Take care of the following during work.
WARNING
The electric charge in the DC bus capacitor may be being charged even after the power is
turned off. Therefore, it may take a long time until the DC link circuit voltage reaches a safety
potential. Do not open the control circuit terminal block cover within 5 minutes after the power has
been turned off. Then remove the control circuit and main circuit terminal block covers. Check that
the DC link circuit voltage between main circuit terminals P (+) and N (-) does not exceed the
safety voltage (+25 VDC) with a multimeter and start the maintenance and inspection.
Electric shock may occur.
- Maintenance, inspection, and parts replacement should be made only by authorized
persons.
- Take off the watch, rings and other metallic matter before starting work.
- Uses insulate tools.
- Never remodel
Daily Inspection
Visually inspect errors in the state of operation from the outside without removing the
covers while the inverter operates or while it is turned on.
- Check if the expected performance (satisfying the standard specification) is obtained.
- Check if the surrounding environment satisfies “Operating Environment”.
- Check that the LED monitor displays normally.
- Check for abnormal noise, odor, or excessive vibration.
- Checks for traces of overheat discoloration and other defects.
Judgment of service life using maintenance information
Menu #5 “Maintenance information” in Programming mode can be used to display data for
the judgment of replacement of “DC bus capacitor,” “electrolytic capacitor on the printed circuit
board” and “cooling fan” as a guide.
If the replacement data is out of the judgment level for early warning, an early warning
signal is output to an external device through terminal (Y1) (function code E20). (When any
replacement data is out of the judgment level, terminal (Y1) outputs ON signal.)
B. THE AC DRIVE MAINTENANCE