American Power Conversion 250 A - Manual (Page 32)

22 InfraStruXure Power Generation System
Emergency Manual Operation
Warning—before you operate the ATS manually
The procedures in this section only apply to situations where automatic operation through the ATS is
impossible. One example would be the ATS monitoring unit’s inability to function. If automatic
operation through the ATS is impossible and you must power your load from the generator, follow
the instructions in “How to power the load from the generator” on page 23.
Caution
The ATS switches should be operated manually ONLY when automatic operation is
disabled. If automatic operation is enabled, the ATS will attempt to actuate the switches to
return to the preferred source.
DANGER
All transfers performed when automatic operation is disabled must be open
transfers—BOTH switches must be turned OFF before the switch for the desired
source is turned ON. Attempting a closed transfer will damage equipment.