17
Backup all unsaved files before you perform the power outage simulation test. If monitoring software has been
installed in the computer, then verify if the software can save the file and shut down the UPS automatically
2.6 Audible / Visual Indicators
Audible / Visual Indicators
Buzzer
Operating status
"
"
- - - -
-
Buck mode
-
"
- - - -
-
AC Normal
-
"
"
- -
-
Boost mode
- - -
"
- -
Beep continuously
UPS fault
- - - -
#
-
Beep every 4 seconds
On battery (AC utility failure)
- - - - -
#
Beep intermittently (see the note)
Overload
"
: LED on - : LED off
#
: LED flashing
Overload status:
AC mode :
Battery mode :
!
Beep 2 times every 1 second for 105%
!
Beep 2 times every 0.5 second for 140 %
!
Beep 2 times every 1 second for 105%. After 20 seconds UPS
will shutdown automatically ,
!
Immediately shutdown for 140%
3. Interface With Computer for UPS Status Monitoring
The built-in DB9 communication port on the UPS may be
connected to a host computer. The intelligent monitoring
software installed in the computer can get the operating
parameters and status through this channel and
command the UPS to conduct pre-defined steps to
protect the data in computer and inform the user to do all
the necessary preventive procedures.
This UPS communicates with the computer by sending
out RS-232 data streams to one of the serial ports
through a 9-in to 9-pin standard cable.
4. Service and Maintenance
4.1 Routine Maintenance
!
Use dry soft clothes to clean the front panel and plastic parts. Do not use any detergent that contains alcoholic
ingredient.
!
The expected lifetime of the battery is around 3 years. Improper operation and harsh environment will reduce the
actual lifetime.
!
Unplug the UPS from power inlet if the UPS will not operate for long period of time.
!
Charge the battery every 3 months to recover the self discharge capacity when the UPS is in extended storage.
!
When replacing batteries, use the sealed lead-acid maintenance free battery with the same voltage and capacity.
!
Proper disposal of batteries if required. Refer to your local codes for disposal requirements.
4.2 Storage instructions
The UPS should be stored in a cool dry location. Make sure the battery is fully charged when the UPS is stored.
For extended storage in moderate climates, the battery should be charged for 12 hours every 3 months by plugging the
power cord into the wall receptacle and turning on the main switch. Repeat every 2 months in high temperature
locations.
The RS232 pin assignment is shown in the following table:
Pin #
Description
Pin 1
Pin 2
This pin is used for RS232 transmit pin (TXD).
Pin 3
This pin is used for RS232 receive pin (RXD).
Pin 4,6
Short-circuited
Pin 5
Common for Pin 8 and 1
Pin 7
DTR +5~12V (RTS).
Pin 8
Pin 9
N.C.
18
5. Troubleshooting
The TROUBLESHOOTING TABLE in the next paragraph covers most of the difficulties that you may encounter under
normal working conditions. If the UPS fails to operate properly, please review the following steps before calling the
repair center:
1. Is the UPS plugged into a proper working outlet?
2. Is the line voltage within the rating specified?
3. Does the fuse or circuit breaker on the rear panel need to be replaced or reset ?
Please do not open the metal cover. There are no user serviceable parts inside
The batteries contained in this UPS are recyclable. The batteries contain lead and pose a hazard to the
environment and human health if not disposed of properly
Do not open or mutilate the batteries. They contain an electrolyte which is toxic and harmful to the skin and
eyes. A battery can present a risk of electrical shock and high short circuit current. When replacing batteries,
wrist watches and jewelry such as rings should be removed. Use tools with insulated handles.
Please note the following information when you call or send an e-mail for service:
1. Model No. / Serial No.
2. Date of purchase
3. Full description of problem.
5.1 Trouble Shooting Table
Abnormal Situation
Cause
Solution
On/Off switch not pushed
completely
Press and hold the On/Off switch for 3 seconds or
until you hear a beep sound
UPS can not turn on and LED
not lit
Battery voltage is too low
Recharge the battery for at least 4 hours
Power cord loose
Re-plug the power cord firmly
Input fuse blow/circuit breaker
tripped
Remove some loads and replace fuse with the same
rating or reset circuit breaker
UPS always at battery mode
Line voltage too high or too low Check input voltage
UPS is normal but the
computer won't turn on
Computer input power cord is
loose or not connected
Reconnect computer input power cord
Battery is not fully charged or
battery is dead.
Recharge the battery for 6 hours and re-test the
backup time. If problem remains, call for service
Backup time is less than the
rating
UPS is slightly overloaded
Remove the least critical load.
Overload
Remove the non-critical loads
The UPS beeps continuously
UPS shuts down in 20 seconds
in battery mode
Remove non-critical load and start the UPS again
Site Wiring Fault LED is on
Missing ground or polarity
reversed
Call an electrician to check your wiring.
Communication function not
working
Wrong interface cable.
Purchase the correct one from your distributor
It is suggested that the battery replacement should be conducted by authorized technician and with the same type and
capacity of battery.
For more information and contact: www.unitek-europe.com
6. Specification
Model
Alpha 750 iS
Alpha 1000 iS
Capacity
Battery Backup
750 VA / 375 W
1000 VA / 500 W
Nominal Voltage
230 Vac
Voltage Range
172 ~ 288 Vac
Input
Frequency Range
50 Hz +/- 10Hz
Nominal Voltage
230 Vac
Voltage Regulation
+10 ~ -15% (Line Mode), +/- 10% (Battery Mode)
Output
Transfer Time
< 4 mS (Typical)
Power Line Surge Suppression
Joules 476
Joules
TEL/FAX Surge Suppression
Type RJ11
(
1 in ,2 out
)
Dimension (DxWxH)
340 x 86 x 156 mm
Physical
Net Weight
5.1 kg
* Specifications are subject to change without prior notice
