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UPS WITH BYPASS ELECTRICAL INSTALLATION
Eaton 9170
+
UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality
24
After turning the load position handle to the UPS position and releasing
the red button, the Eaton 9170+ UPS remains in Bypass mode. For
proper operation, return the UPS to Auto mode using the following
procedure.
NOTE If the UPS remains in Manual Bypass mode and incoming AC power is lost, the load
is automatically dropped. The UPS must be in Auto mode to provide battery backup power.
NOTE If you have any questions or problems with the bypass operation, call the
Help
Desk
at one of the telephone numbers on page NO TAG and ask for a UPS technical
representative.
1. Press the menu button on the front panel display (see Figure 54 on
page 80). The System Status Menu displays.
2. Press the
B
button until the System Control menu displays.
3. Press the
button. Mode Preference displays.
4. Press the
button to access Mode Preference. The Enter
Password screen automatically opens.
5. Enter the appropriate password (0377 is the default), then press the
button.
6. Press the
button again and press the
B
button until you see Auto.
7. Press the
button and listen for a click.
8. Press ESC twice to return to the System Status Menu. The UPS is
now in Auto mode.
To disconnect AC input power during maintenance or service, turn the
bypass switch to the SERVICE position.
Table 4 shows the bypass switch models available for the Eaton 9170+
UPS.