Can a Motor Driven Load be used with an Easy UPS / Back-UPS?

No, an Easy-UPS or Back-UPS use a step-approximated sine waveform on the output of the UPS to the load. The Easy-UPS and Back-UPS models are intened to be used with computers and peripheral devices. These models are not intended to be used with motor driven equipment. If a motor driven load has been attached to the UPS, it may cause premature damage to the UPS.

Please refer to the below extracted from the user manual under troubleshooting section:

Released for: Schneider Electric USA