Troubleshooting Table - Unitek ALPHA 500 Sx Manual Del Usario

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 and place of purchase
3. Full description of problem.
5.1 Trouble Shooting Table
Abnormal Situation
UPS can not turn on and LED
not lit
UPS always at battery mode
UPS is normal but the
computer won't turn on
Backup time is less than the
rating
The UPS beeps continuously
Communication function not
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-power.com
6. Specification
Model
Power
Input
Output
Tel. / fax/ modem line
Physical
* Specifications are subject to change without prior notice
Cause
On/Off switch not pushed
completely
Battery voltage is too low
Power cord loose
Input fuse blown
Line voltage too high or too low
Computer input power cord is
loose or not connected
Battery is not fully charged or
battery is dead.
UPS is slightly overloaded
Overload
UPS shuts down in 20 seconds
in battery mode
Wrong interface cable.
Battery mode
Nominal voltage
Voltage range
Frequency range
Nominal voltage
Voltage range
Transfer time
Joules
Type
Dimensions (S x W x H)
Net Weight
Solution
Press and hold the On/Off switch for 10 seconds or
until the audible alarm stops
Recharge the battery for at least 4 hours
Re-plug the power cord firmly
Remove some loads and replace fuse with the same
rating
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
Use the one included in your UPS box
Alpha 500 Sx
500 VA / 250 W
230 Vac
172 ~ 288 Vac
50 / 60 Hz ±6Hz
230 Vca
+10 ~ -13% (Normal Mode), ±10% (Battery Mode)
< 4 mS (Typical)
238 Joules
RJ11
300 x 100 x 160 mm
4.5 kg
Alpha 750 Sx
750 VA / 375 W
6.3 kg