MITSUBISHI
ELECTRIC
7011A SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
3-15
MITSUBISHI ELECTRIC 7011A SERIES UPS
3.6 MAINTENANCE BYPASS SET-UP PROCEDURES
(
For Service Personnel Only
)
A) Transfer of load from inverter to maintenance bypass
1. Press “MENU” button and then select “BYPASS_OP.” and press ENTER button.
2. Press “ “ or “ “ until the display shows “YES”, and then press ENTER button.
3. “BYP.OP.” LED illuminates and the UPS will be in bypass operation.
WARNING: Do not transfer to Maintenance Bypass Mode unless
the inverter is not running --- that is the UPS is in Static
Bypass Mode.
4. After confirming that the “BYP.OP.” LED is illuminated, rotate 52CS clockwise to the
“TRANSFER” position (Do not rotate 52CS if the “BYP.OP.” LED is NOT illuminated).
5. Then rotate 52CS clockwise to the “WAIT” position and after that push & rotate to the
“BYPASS” position.
6. Transfer complete. Load is now powered from the external source.
B) Transfer of load from maintenance bypass to inverter
1. Rotate 52CS counterclockwise from the “BYPASS” position to the “WAIT” position, and wait
10 seconds until the LCD on the front panel displays the top page.
WARNING: Do not proceed to the next step until the LCD on the
front panel displays the top page.
2. After confirming that the LCD on the front panel displays the top page, pull & rotate 52CS
counterclockwise to the “TRANSFER” position, and then rotate to the “NORMAL” position.
3. On the UPS, press and hold the “START” button for 0.5 seconds. The “INV.OP.” LED should
illuminate.
4. Transfer complete. Load now powered by the inverter.
