Alpha Technologies VMX Series - Manual (Page 48)

48 017-940-B0-001, Rev. A
1. Use a voltmeter to verify the input voltage is within specifi cations before turning on the
AC voltage input breaker.
2. Once the proper voltage is present, verify the battery voltage indicated on the Smart
Display is greater than 31.5V for a 36V system, or 42V for a 48V system. 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 a short period of time. Exercise caution during this changeover. The grounding circuit
to the power supply is broken while in the act of unplugging and reconnecting the power
supply.
If the batteries are at or below the low voltage cutoff, the power supply will not transfer to
battery back-up and there will be a momentary power outage to the cable system while
you make this changeover.
3. Turn on the AC input power.
4. Shut down the generator and remove the grounding system.
5.0 Operation, continued
5.6 Resumption of Utility Power
Care must be exercised to ensure that both powering systems are not connected at the same time,
or damage to the power supply and/or the generator may result.
Use caution when disconnecting a generator and reconnecting to utility power. Dangerous
voltages are present.
WARNING!
CAUTION!