Routine Maintenance; Storage Instructions; Troubleshooting Table - Unitek Alpha 750 iS Manual Del Usuario

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
" "
- - - -
"
- - - - -
" "
- - -
"
- - - - - Beep continuously
#
- - - - - Beep every 4 seconds
#
- - - - - Beep intermittently (see the note)
" #
: LED on - : LED off : LED flashing
Overload status:
AC mode : Battery mode :
! Beep 2 times every 1 second for 105% ! Beep 2 times every 1 second for 105%. After 20 seconds UPS
! Beep 2 times every 0.5 second for 140 %
! 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.
Operating status
- Buck mode
- AC Normal
- Boost mode
UPS fault
On battery (AC utility failure)
Overload
will shutdown automatically ,
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.
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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
UPS can not turn on and LED On/Off switch not pushed
not lit completely
Battery voltage is too low
UPS always at battery mode Power cord loose
Input fuse blow/circuit breaker
tripped
Line voltage too high or too low
UPS is normal but the Computer input power cord is
computer won't turn on loose or not connected
Backup time is less than the Battery is not fully charged or
rating battery is dead.
UPS is slightly overloaded
The UPS beeps continuously Overload
UPS shuts down in 20 seconds
in battery mode
Site Wiring Fault LED is on Missing ground or polarity
reversed
Communication function not Wrong interface cable.
working
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
Capacity Battery Backup
Input Nominal Voltage
Voltage Range
Frequency Range
Output Nominal Voltage
Voltage Regulation
Transfer Time
Power Line Surge Suppression Joules
TEL/FAX Surge Suppression Type
Physical Dimension (DxWxH)
Net Weight
* Specifications are subject to change without prior notice
Solution
Press and hold the On/Off switch for 3 seconds or
until you hear a beep sound
Recharge the battery for at least 4 hours
Re-plug the power cord firmly
Remove some loads and replace fuse with the same
rating or reset circuit breaker
Check input voltage
Reconnect computer input power cord
Recharge the battery for 6 hours and re-test the
backup time. If problem remains, call for service
Remove the least critical load.
Remove the non-critical loads
Remove non-critical load and start the UPS again
Call an electrician to check your wiring.
Purchase the correct one from your distributor
Alpha 750 iS Alpha 1000 iS
750 VA / 375 W 1000 VA / 500 W
230 Vac
172 ~ 288 Vac
50 Hz +/- 10Hz
230 Vac
+10 ~ -15% (Line Mode), +/- 10% (Battery Mode)
< 4 mS (Typical)
476 Joules
RJ11 (1 in ,2 out)
340 x 86 x 156 mm
5.1 kg
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