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5. Maintenance
The NT5C06D rectifier is virtually maintenance free. It requires periodic float / equalize verification (once every six months) and air filter replacement as required.
Note: If the unit operates in a dusty environment the optional air filter is recommended. It must be inspected and changed, or thoroughly cleaned, at least every 12 months, or sooner if the dust level is high.
CAUTION
Do not install a wet filter on the unit.
To remove the filter, simply unscrew it.
Float / equalize
The float/equalize voltage level of the rectifier can be verified and adjusted with the rectifier in, or out of service. To verify the equalize setting point with the rectifier out of service, proceed as follows:
Procedure 6 - Adjusting the float / equalize
Step | Action |
1Open the DC circuit breaker.
2Put the FLT/EQL switch to the EQL position.
3If the voltage requires readjustment use the EQL potentiometer to set the equalize voltage to the new level.
4Release the FLT/EQL to FLT.
5Close the DC circuit breaker.
continued
Helios Rectifier 25/48NT5C06D Installation and User Manual
