Introduction – Clary DT Series ET User Manual
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T H E C O N T I N U O U S P O W E R C O M P A N Y
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INTRODUCTION
ongratulations! You have selected the 
highest quality protection for your continuous 
power needs. This unit offers a quiet and 
compact package with superior performance 
you can depend on. You now own a DTR(ET) 
Series Continuous Power System (CPS) which is an 
all Digital Technology product manufactured by 
Clary
Corporation, the first name in uninterruptible power 
system (UPS) reliability. The Continuous Power 
System is the highest order in the hierarchy of UPS 
products. When power problems occur, there can 
be no compromising the reliability of your power 
solution. The DTR(ET) Series Continuous Power 
System is your complete power solution. 
This Owner’s Operating Manual is provided with 
your new DTR(ET) UPS. It will enhance your 
understanding of the product and its functions. WE 
STRONGLY URGE YOU TO READ THIS MANUAL 
COMPLETELY, PRIOR TO BEGINNING 
INSTALLATION OR ATTEMPTING OPERATION. 
This will save you time and effort in your installation 
and application, and it will assure a trouble free 
installation and startup session, thus enhancing 
public safety and the image of your agency. 
The illustrations provided will familiarize you with this 
product’s operating modes and components. Always 
operate the unit within the guidelines and 
specifications provided to maximize safety and the 
lifetime of the unit. Also, your understanding of the 
product is a key element in getting the most out of 
your DTR(ET) Series UPS. 
IMPORTANT SAFETY INSTRUCTIONS,
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions that should be followed during installation and maintenance of 
the UPS and batteries. Be aware of the following symbols and their meaning as they appear throughout the 
manual: 
This equipment generates and uses radio frequency 
energy and if not installed and used properly in strict 
accordance with the manufacturer's instructions, may 
cause interference to radio and television reception. All 
units in this manual have been tested and found to comply 
with the limits for a Class A computing device in 
accordance with the specifications in Subpart J of Part 15 
of FCC Rules, which are designed to provide reasonable 
protection against such interference in a commercial 
installation. However, there is no guarantee that 
interference will not occur in a particular installation. If this 
equipment does cause interference to radio and television 
reception, which can be determined by turning the 
equipment off and on, the user is encouraged to try to 
correct the interference by one or more of the following 
measures: 
 Reorient the receiving antenna. 
 Relocate the UPS with respect to the 
receiver.
 Move the UPS away from the receiver. 
 Plug the UPS into a different outlet so 
that the UPS and receiver are on 
different branch circuits. 
If necessary, the user should consult the dealer or an 
experienced radio/television technician for additional 
suggestions. The user may find the following booklet 
prepared by the Federal Communications Commission 
helpful: 
"How To Identify and Resolve Radio-TV Interference 
Problems" 
This booklet is available from the U.S. Government 
Printing Office, Washington, DC 20402, Stock No. 
004000003454. 
C
!
This symbol indicates that 
dangerous voltage constituting 
a risk of electrical shock is 
present within the unit. 
This symbol indicates that there 
are important operating and 
maintenance instructions in the 
literature accompanying this 
unit. 
!
CAUTION
RISK OF ELECTRIC
SHOCK DO NOT OPEN
