Best Power Unity/I UT3K User manual

UNITY/I
User Manual
UT3K, UT4K, UT5K, and UT8K
Single-Phase Uninterruptible Power Systems
MLS-0350B-OL
Copyright 1994-1997, Best Power. All rights reserved.
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IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for your UNITY/I UPS.
The installation and use of this product must comply with all national, federal, state, municipal or local codes that apply.If you
need help, please have your UPS model and serial number and call Best Power’s Worldwide Service at 1-800-356-5737 (U.S.A.
or Canada) or 1-608-565-2100. Outside of the U.S.A. and Canada, you can also call the nearest Best Power office for more
information.
Best Power
P.O. Box 280
Necedah, Wisconsin 54646 U.S.A.
Telephone: [phone]
Toll-free: 1-800-356-5794 (U.S.A. and Canada)
FAX: [phone]
International Fax: [phone]
Worldwide Service, Best Power
P.O. Box 11
Necedah, Wisconsin 54646 U.S.A.
Telephone: [phone]
Toll-free: 1-800-356-5737 (U.S.A. and Canada)
FAX: [phone]
Best Power Technology Mexico, S.A. de C.V.
Golfo de Riga, 34
Colonia Tacuba
Mexico D.F. 11410
MEXICO
Telephone: [phone]
FAX: [phone]
Best Power Technology Pte. Ltd.
PICO Creative Centre, Level 5
20 Kallang Avenue
SINGAPORE 339411
Telephone: [phone]
FAX: [phone]
Sola Australia Ltd.
13 Healey Road
Dandenong Victoria 3175
AUSTRALIA
Telephone: [phone]
FAX: [phone]
Best Power Technology Limited
BEST House
Wykeham Industrial Estate
Moorside Road
Winchester
Hampshire
SO23 7RX
ENGLAND
Telephone: [phone]
Toll-Free: 0800-378444
FAX: [phone]
Best Power Technology GmbH
Am Weichselgarten 23
D-91058 Erlangen
GERMANY
Telephone: [phone]
Gebührenfrei: 0130/84/7712 (in Germany)
Fax: [phone]
Borri Elettronica Industriale Srl
Via dei Lavoratori, 124
20092 CINISELLO BALSAMO (Mi)
Milan, ITALY
Telephone: [phone]
FAX: [phone]
Best Power Technology AG
Limmatstrasse 12
8957 Spreitenbach
SWITZERLAND
Telephone: [phone]
FAX: [phone]
IF THE UPS IS SOUNDING AN ALARMand you need to know what the alarm means and how to respond, turn to Section
204. To silence the audible alarm, press the [CANCEL] key.Silencingthe audible alarm does not correct the condition that caused
the alarm.
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CAUTION!
All uninterruptible power systems (UPS) units contain dangerous voltages.
The unit can provide power from its batteries. To avoid possible personal injury or equipment dam-
age, assume that hazardous voltage is present at the unit’s output any time AC input power or DC
battery voltage is applied. To make certain there is no output voltage, turn the unit off, unplug the
unit, and disconnect all DC sources.
For units with line cords, the power supply cord is intended to serve as the disconnect device. The
socket-outlet shall be near the equipment and shall be easily accessible.
Before maintenance or repair, all connections must be removed. Before maintenance, repair, or
shipment, the unit must be completely switched off and unplugged or disconnected.
VORSICHT!
Vorsicht: Alle USV-Einheiten beinhalten gefährliche Spannungen.
Wenn der “Ein/Aus”-Schalter der USV eingeschaltet ist, kann an den Steckdosen der USV
gefährliche Spannung anliegen. Die Batterie der USV liefert selbst dann Strom, wenn die USV nicht
ans Netz angeschlossen ist.
Bei Modellen mit Netzstecker wird zum Abschalten des Geräts der Stecker aus der Steckdose gezo-
gen; bei anderen Modellen muß der Wechselstrom-Trennschalter benutzt werden. Die Steckdose muß
sich in der Nähe des Gerätes befinden und bequem erreichbar sein.
Achtung: Vor einer Wartung oder Instandsetzung müssen alle Anschlußleitungen entfernt werden.
Vor einer Wartung, Instandsetzung oder Transport muß die USV komplett abgeschaltet und
abgesteckt werden.
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Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
001 Storing the UNITY/I UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
002 If You Have a Question . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
100 Starting the UNITY/I UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
101 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
102 Setting the Time and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
200 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
201 Front Panel Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
202 Front Panel Keys and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
203 Inside the Front Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
204 Alarms: What They Mean and What to Do About Them . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
205 If You Have an Extended Power Outage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
206 Shutting Down the UNITY/I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
300 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
301 Displaying Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
302 Changing Parameter Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
303 Parameter Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
400 Maintenance and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
401 Regular Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
402 Worldwide Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
403 Accessing the Alarm and System Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
500 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
600 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Appendix A: Remote Emergency Power Of (EPO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Appendix B: Attaching the Stabilizer Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4/97
This manual is for units with ROM versions 1.06-1.08.
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1
Introduction
The UNITY/I™ UPS is easy to start and operate. Once you start the UPS, it provides continuous, computer-
grade power to your equipment. The UPS keeps you informed of its status with its front panel lights, four-digit
display, and audible signals (beeper). Using the display and front panel keys, you can display UPS information
and program some features.
This manual tells you how to start and operate the UNITY/I UPS. Begin with Section 100, “Starting the
UNITY/I UPS,” which will help you determine whether you need to do any installation before you start the
UPS.
001 Storing the UNITY/I UPS
If you are not going to use the UPS right away, store it between -20° and +40° Celsius (-4° to +104° F). If you
remove the batteries and store them separately, you can store the UPS at -20° to +60° Celsius (-4° to +140° F).
Batteries have a longer shelf life if you store them below 25° Celsius (77° F).Recharge stored batteries every
90 to 120 days.
002 If You Have a Question
Best Power is committed to outstanding customer service. Worldwide Service is happy to help you with your
problems or questions. A service technician is available 24 hours a day, 365 days a year. Just call Worldwide
Service or the nearest Best Power office, or send a fax to the Worldwide Service fax number. Please have your
unit’s serial number available when you call; this number is inside the front door of the UPS.
If you prefer to contact Best Power via computer, you can use Bulletin Board Service, CompuServe, or Best
Power’s World Wide Web site to get more product information.
Best Power’s toll-free Fax-on-Demand service is also available 24 hours a day to give you access to technical
notes and product information.
Worldwide Service: 1-800-356-5737 (U.S., Canada) or 1-608-565-2100
Worldwide Service FAX: [phone] or 1-608-565-2509
Bulletin Board Service 1-608-565-7424
CompuServe: Go BEST at any ! prompt.
World Wide Web Site: http:/www.bestpower.com
Fax on Demand: 1-800-487-6813 (U.S. and Canada)

* The drawings in Figure 1 show a UT3K, UT4K or UT5K. The UT8K is similar in appearance.
2
100 Starting the UNITY/I UPS
If your UNITY/I UPS does not have an input line cord and plug, it is a hardwired unit and must be installed by a
qualified electrician (see the
UNITY /I Installation Manual). After a qualified electrician has installed the UPS,
or if the UPS has an input plug, follow the instructions in this section to start the unit.
Make sure that the UPS is near the equipment it will protect. Leave at least 4 inches (100 mm) space on top of
and behind the UPS for ventilation. Do not put the UPS near a source of heat.
Make sure that the temperature is 0° to 40° Celsius (32° to 104° Fahrenheit) and the relative humidity is 0 to
95% without condensation. The air must be free of dust, chemicals that corrode or other contaminants. Air must
be free to move around the unit. The batteries’ service life is longer if the operating ambient temperature
stays below 25° C (77° F).
Front View* Back View*
Output
Receptacles
(optional)
Front Panel Lights,
Display, and Keys
Front Door
(Keyswitch and
Serial Number
Inside)
Serial Number
Main Output
Circuit Breaker
(some models)
Communication
Port
Line Cord
DC Port
Grounding
Terminal
Stabilizer
Bracket
Figure 1

3
101 Startup
1If you have a UT3K, UT4K or UT5K:Attach the stabilizer bracket to the back of the UPS (see Appendix B).
2Open the UPS’ front door by pulling the top of the door toward you (see Figure 1 to find the door). Make sure that
the keyswitch inside the front door is turned to “Off” (see
Figure 2).
3If your UNITY/I has an input line cord and plug:Plug in the UPS. If the plug does not match the wall outlet, have a
qualified electrician install the proper wiring and outlet.
If your UNITY/I is hardwired (does not have an input line
cord and plug),an electrician should have installed the UPS.
An external bypass/AC disconnect switch should be mounted
on the wall nearby (see Figure 3). Turn the UPS AC LINE
DISCONNECT SWITCH to “ON” and the UPS BYPASS
SWITCH to “OFF.”
4If you have an external battery pack(s)(see Figure 4), refer to the installation instructions that came with your battery pack(s). Then continue
with the steps below:
a. After completing the battery pack installation, hold down the Precharge
switch on the front of the battery cabinet for five seconds (see Figure 5).
b. Insert the key into the main DC switch on the front of the battery
cabinet. Turn it clockwise, then pull the switch out toward you. The
ON-LINE light will light on the battery pack cabinet.
5Turn the keyswitch inside the front door of the UPS to “Auto” (see Figure 6). The yellow BATTERY light will turn on briefly, then the green LINE
light will turn on.
Figure 2
Figure 3
Figure 4
Figure 5
Precharge Switch
Keyswitch
UNITY/I Battery Pack
Figure 6

4
The four-digit display will show the estimated runtime
in minutes and seconds (see Figure 7). For now, the
estimated runtime is high because there is no equipment
drawing power from the UPS. If the red ALARM light
is on,see Section 204 before you go on.
Note:Do not continue until the green LINE light is on. The UPS is set at the factory to automatically select
its output frequency; to do this, the UPS mustrun on AC line. If the UPS does not run on ACline the
first time you start it, you must either set parameters 14 and 15 or wait until the green LINE light
comes on before you switch on the connected equipment. To set the parameters, see Section 302.
6Once you switch on the unit and the LINE light comes on, the UPS will begin to charge the batteries. If this is the first time you have started the UPS, let the UPS run on line for at least 24 hours to charge the
batteries. You may use the UPS right away; however, its battery runtime will be reduced until it fully
charges the batteries.
7If your UNITY/I has receptacles on the back,switch off the equipment you want to connect to the UPS. Then, plug the equipment into the receptacles on the back of the UPS and switch on the equipment. If the
red ALARM light comes on, see Section 204.
If your UNITY/I does not have receptacles on the back,the electrician who installed the UNITY/I should
have connected your equipment to it. Turn the UPS BYPASS SWITCH (see Figure 3) to “UPS.” Then,
switch on the equipment connected to the UPS. If the red ALARM light comes on, see Section 204.
The UNITY/I UPS is now providing continuous, computer-grade power to your equipment and is ready to
provide battery backup power when needed.
Note:You may occasionally hear short “clicking” sounds inside the unit; these clicks are a normal part of
unit operation.
8If you plan to use CheckUPS software, connect the interface cable from the UPS to the computer system,
with the “UPS” end connected to the UNITY/I.
Using CheckUPS with Windows 95:Shut down your computer and insert the CheckUPS CD. Restart the
computer. Follow the instructions in the CheckUPS package.
Using CheckUPS withoutWindows 95:Start the computer and follow the instructions in the CheckUPS
package.
9Fill out the warranty registration card in this manual and return it to Best Power. Please return the registra- tion card within ten days of installation.
Figure 7

102 Setting the Time and Date
The UPS stores the time, date, and year in parametersthat you can program (see Section 300 for more about
parameters). These parameters must be programmed correctly so that the UPS can store accurate information in
its alarm and system logs. Whenever the UPS has been shut down, you should reset the time and date after you
restart the UPS. To set the time, date, and year parameters, follow the steps below.
Note:When the unit is in parameter mode, the functions of the front panel keys change. The label inside the
front door of the unit explains what the keys do when the UPS is in parameter mode. The label also
shows a “Programming Template” with different key names for parameter mode.
1.To enter the parameter mode, hold down the [CANCEL] and [RUNTIME] keys together. Release the keys when
the display changes to P-00(for parameter 0).
2.Enter the user password (377) by following these steps:
a. Press [CANCEL]. The display should show 0(the value of parameter 0).
b. Use the [%LOAD] key to change the display to 377. If you accidentally scroll past 377, use the [VOUT]
key to go back.
Note:If you hold downthe [%LOAD] or the [VOUT] key, the display will scroll more quickly after a few
seconds.
c. Press [RUNTIME]. The display should show Ito show you have entered the user password.
d. Press [CANCEL]. The display should show P-00.
3.Set the year (parameter 91) by following these steps:
a. Use the [%LOAD] key to change the display to P-9I.
b. Press [CANCEL]. The display should show a year.
c. Use the [%LOAD] orthe [VOUT] key to change the display to the correct year.
d. Press [RUNTIME]. The display should show the correct year.
e. Press [CANCEL]. The display should show P-91.

6
4. Set the date (parameter 90) by following these steps:
a. Use the [VOUT] key to change the display to P-90.
b. Press [CANCEL]. The display should show a date formatted as mm.dd (month.day).
c. Use the [%LOAD] or [VOUT] key to change the display reading to the correct month and day. For example, if
the date were March 27, you should enter “0327.”
d. Press [RUNTIME]. The display should show the correct date (mm.dd).
e. Press [CANCEL]. The display should show P-90.
5. Set the time (parameter 89) by following these steps:
a. Use the [VOUT] key to change the display to P-89.
b. Press [CANCEL]. The display should show a time formatted as hh:mm (hour:minute).
c. Use the [%LOAD] or [VOUT] key to change the display reading to the correct time in 24-hour time. For times
from 1 p.m. to 11:59 p.m., add twelve to the hour. For example, 2:30 p.m. would be 14:30.
d. Press [RUNTIME]. The display should show the correct time (in 24-hour time).
e. Press [CANCEL]. The display should show P-89.
6. To escape the parameter mode, press [VLINE] twice.