Alpha Technologies Continuity: 6K_10K - Manual (Page 28)

0170012-J0 Rev A 26
3.5.6 Troubleshooting a UPS that is Off for an Unknown Reasons
1. If a serious abnormal condition has occurred, the UPS will lock into the OFF position. The LCD displays
Screen AA and an error message.
2. After 3 seconds, all messages are blocked except the bypass indicators: LED and LCD . If the
utility voltage is outside the normal range after the UPS is locked, the LED will extinguish and the
LCD will be shown on the LCD.
3. Unlock the UPS as follows:
a. Check all the recorded error messages.
b. Check the table in Section 2.2 to troubleshoot the problem. If this is unsuccessful, consult your
local distributor for service.
c. Press and hold the OFF button for 5 seconds. The buzzer sounds twice.
d. Switch off the utility input power breaker.
e. The UPS is now unlocked, but you may want to contact your local distributor to make sure the
underlying fault has been solved.
3.5.7 Shutting Off the UPS
1. Press and hold the OFF button for 5 seconds. The inverter output switches off. The output load is
then supplied via the bypass loop. The LCD displays Screen B.
2. Switch off the utility input power breaker and the bypass input power breaker.
3. The UPS is now completely shut off.
3.5.8 Maintenance Bypass Mode - for Optional Maintenance Bypass Switch
The maintenance bypass mode is for UPS maintenance only. Only authorized technicians should imple-
ment this procedure. Your warranty will be void if the UPS is damaged by unauthorized repairs.
1. Press and hold the OFF button for 5 seconds. The LCD displays Screen B and the UPS output is in
the bypass mode.
2. Remove the cover of the maintenance bypass switch (CAM switch). Turn the CAM switch to the Bypass
mode. The upper right-hand corner of the LCD display screen shows .
3. Switch off the utility input power breaker and the bypass input power breaker (see Figure 1). The UPS
can now be serviced or repaired.
4. When the repair is complete, switch on the utility input power breaker and the bypass input power
breaker.
5. The UPS starts up in the bypass mode and automatically runs a self-test. If no fault messages appear,
the pre-startup of the UPS has been successful and the charger starts charging the batteries.
6. Turn the CAM switch back to the INV/UPS position and replace the maintenance bypass switch cover.
7. Complete Steps 8 and 9 of section 3.5.1. The UPS start-up operation is now complete.
Complete Step 1 before proceeding to Step 2. Otherwise the UPS will go through a 10
second warning procedure to alert you that the procedure is not being followed, which
can damage the UPS because of the uncertain utility status. The UPS will switch back to
inverter mode immediately if the CAM switch is turned back to the UPS position.
CAUTION!