ENG
22
3.0
OPERATION
3.1 Transfer to Maintenance Bypass
Before transferring to maintenance bypass, make sure the Power LED is lighting.
Move the UPS must in Bypass mode.
Transfer the rotary bypass switch from “Normal” to “Bypass”. At this time, all
connected devices are powered by the utility power directly. You may turn off the
UPS and disconnect two cables connecting to UPS. Then you may now service the
UPS.
3.2 Transfer to UPS Protection
After maintenance service is done, make sure the UPS operation is normal. Then,
reconnect UPS to the unit by following Installation Section. Verify the Power LED is
lighting.
Once connected the UPS will move in Bypass mode.
Then transfer the rotary bypass
switch from “Bypass” to “Normal”.
Move the UPS must to LINE mode.
Now, all connected devices are protected by UPS.
3.3 Master/Slave Function Operation
After connecting all devices to the unit, press “Master/Slave switch” to enable status
[
]. The Slave On LED will light up when connecting load on
master output is above 20W. Press “Master/Slave switch” to disable
status[
], the function is disabled and the Slave On LED will
be on.
3.4 Status and LED
Status
Indicator
Utility is normal.
Utility fails but UPS is providing power.
Power LED (Green) on
Utility Fails
Power LED (Green) off
Master/Slave function is enabled and the connecting
load on master output is above 20W
Slave On LED (Yellow) on
Master/Slave function is enabled and the connecting
load on master output is below 20W.
Slave On LED (Yellow) off
Master/Slave function is disabled.
Slave On LED (Yellow) on
Summary of Contents for U power A03-PDUMBS-R
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