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DPU1U SERIES
INSTALLATION & OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Document Number: DPU1U-MAN Rev. 4
dpu1u-man-rev1-0719.indd
This document is believed to be correct at time of publication and UNIPOWER LLC accepts no responsibility for
consequences from printing errors or inaccuracies. Specifications are subject to change without notice.
12.2.4
Increase the power supply output voltage slowly while observing the voltage. At
approximately 49.0V for the 48V version or 24.5V for the 24V version the red LED should
turn off. With an ohmmeter, measure the resistance between side B alarm terminals N.C.
and C. It should measure a short.
12.2.5
With the red LED off, move the battery circuit breaker to the off position. The red
LED should turn back on. With an ohmmeter, measure the resistance between side B alarm
terminals N.O. and C. It should measure a short.
12.2.6
Turn off the power supply and disconnect from the panel. It is now ready for operation
in the telecom system.
12.3
The combination panel may now be connected to its intended application.
12.4
If the combination panel did not operate properly in the above tests, go back and double
check the connections and the polarity of the input source to make sure it is correct.
Please note that there are no user serviceable parts inside and that opening the unit will void
the warranty.
Product support can be obtained using the following addresses and telephone numbers.
Corporate office:
UNIPOWER, LLC
210 N University Dr
Coral Springs, FL 33071
United States
Manufacturing facility:
UNIPOWER, LLC
65 Industrial Park Rd
Dunlap, TN 37327
United States
Manufacturing facility:
UNIPOWER Slovakia SRO
ZLATOVSKA 1279
Business Center 22
91105 Trencin, Slovakia
Phone: +1-954-346-2442
Toll Free: 1-800-440-3504
Web site –
When contacting UNIPOWER, please be prepared to provide:
1. The product model number, spec number, S build number, and serial number
- see the equipment nameplate on the front panel
2. Your company’s name and address
3. Your name and title
4. The reason for the contact
5. If there is a problem with product operation:
•
Is the problem intermittent or continuous?
• What revision is the firmware?
•
What actions were being performed prior to the appearance of the problem?
•
What actions have been taken since the problem occurred?
