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INSTALLATION AND TEST
NOTE: If a Battery Pack is used with this UPS, refer first to the Battery Pack Owner's
Manual Installation Procedure.
1.
Ensure that the UPS power switch is "Off" ("
grounded commercial power receptacle with proper supply voltage and frequency.
2. Turn the DC Breaker Switch on.
3. Turn the UPS Power Switch "On" ("I" position). With commercial voltage present and in
range, the UPS will come on in the AC mode after a short delay.
4. Press and hold the Test/Alarm Silencer button for approximately 30 seconds: the AC
NORMAL LED will extinguish. The BATTERY IN USE LED will light, the BATTERY STATUS
LED's will light and the Audible Alarm will sound after a short delay. Release the Test/Alarm
Silencer Button and the UPS will return to the AC Normal mode after a short delay. AC
NORMAL LED will be on and all other indicators off.
5. Verify that the power requirements (VA & watts) of the equipment to be protected are within
the capacity of the UPS. Plug in and turn on the various loads. Momentarily press the Test
Button and verify proper UPS operation.
NOTE: If any condition experienced during the above test procedure was not as
described, refer to the UPS Problem Chart in the back of this manual.
OPERATION
The UPS loads may be controlled by the UPS Power Switch if desired. For Model MM450, the
battery charger functions with the Power Switch on or off. For other models, the Power Switch
must be on for battery charge; consequently, these units may need to remain on overnight if
several power outages occurred during the day.
When a brownout, power interruption, power outage or over-voltage condition occurs, the alarm
will sound and the BATTERY IN USE light indicator will glow, indicating that commercial power is
lost or unacceptable and MINUTEMAN is now supplying power to your system. With a slower
intermittent audible alarm (approximately once every two seconds) and one or more green
BATTERY STATUS indicator lights on, the unit is in the normal Inverter mode (BATTERY
OPERATION). When the alarm sounds at more rapid intervals (approximately two per second)
and all green BATTERY STATUS lights extinguish, about two minutes of battery power remain. If
you have not already downloaded you system and turned it off, you must do so at this time. Then
the MINUTEMAN Power Switch should be turned off to prevent further battery discharge.
When commercial power returns, switch the MINUTEMAN power switch to the "On" position if it
was turned off previously. The green indicator light will come on after a short delay. Return your
system to operation, and the MINUTEMAN system will automatically recharge the internal
batteries during system operation.
Since most commercial power outages are of short duration, commercial power will probably be
restored before the two-minute warning . IF COMMERCIAL POWER RETURNS BEFORE THE
WARNING SIGNAL, THERE IS NO NEED TO SHUT DOWN THE SYSTEM AT ALL . The
MINUTEMAN will switch back to normal AC operation automatically.
" position). Plug the UPS Power Plug into a
8
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