User guide

HA32A UPS OPERATION 2–17
2.4.5 BYPASS PROCEDURE Menu
The BYPASS PROCEDURE menu is used to manually transfer the load to the bypass ac
input (MAINS2) source without interruption to the load, and for the reverse transfer of
the load back to the UPS inverter output.
If the bypass ac input (MAINS2) source is out of tolerance, these transfers will result in
a 200 to 800 millisecond load interruption and can be performed only with a FORCED
STOP command (see Section 2.4.6.4). The FORCED STOP command can be issued only
after entering the two-digit password.
The following procedure is for accessing and going through the BYPASS PROCEDURE
menu.
1. Press the Menu key and the LCD displays the following:
1 START-UP
2 INVERTER ON/OFF
2. Press the Scroll Down key four times and the LCD displays the following:
5 BYPASS PROCEDURE
6 COMMANDS
3. Press the 5 key to select menu item number five, BYPASS PROCEDURE, and the
LCD displays the following:
1 SW TO MAN BY-PASS
2 RETURN TO UPS
To Transfer To Manual Bypass
4. To transfer to manual bypass, press the 1 key and the LCD displays the following:
STOP THE INVERTER
0 = STOP ____
5. Press the 0 key and then the Enter key. The LCD displays the following screens:
* * CHECKING * *
* * * * *
COMMAND ACCEPTED
CLOSE BY-PASS SW
ITEM: Q3BP
6. When the command to stop the inverter is accepted, the inverter turns off, the green
"inverter" LED goes off, the green "load on bypass" LED goes on, the audible alarm
activates, and the red Alarm LED flashes.
7. Close the manual bypass switch Q3BP. The LCD displays the following:
OPEN MAINS2 SWITCH
ITEM: Q4S