Alpha Technologies XM2, XM2-HV, XM2-HP - Manual (Page 77)

1. Before turning on the AC voltage input breaker, use a voltmeter to verify the input voltage
is within specifications.
2. When the proper voltage is present, verify the battery voltage indicated on the Smart
Display is greater than 31.5Vdc or 42.0Vdc (3 or 4 battery systems respectively).
Disconnect the power supply from the generator output and plug the power supply input
cord into the convenience outlet within the enclosure. The power supply operates on
battery backup for this short period of time, but exercise caution during this changeover
as the grounding circuit to the power supply is broken.
If the batteries are at or below the low voltage cutoff, then the power supply will NOT
transfer to battery back up and there will be a momentary power outage to the cable sys-
tem while you make this changeover.
3. Turn on the AC input power.
4. Shut down the generator and remove the grounding system.
4.9 Resumption of Utility Power
Use caution when disconnecting and reconnecting a generator to utility power.
Dangerous voltages are present.
WARNING!
Exercise care to ensure that both powering systems are not connected at the same time or
damage to the power supply and the generator may result.
CAUTION!
77 017-805-B0-010 Rev. K2