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UPS STARTUP
Eaton 9170
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UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality
71
Startup for Hardwired Units
To start a hardwired unit:
1. Confirm that an electrician has completed and tested the
connection to the proper power source.
2. If external battery cabinets are installed, check the cable
connections between the UPS and external battery cabinets.
3. Ensure that all power modules are properly installed and latched
into the UPS cabinet.
4. If you are installing power management software, connect your
computer to the UPS communication port (shown in Figure 51)
using the supplied communication cable.
DB-9 Connector for
Computer Cable
Figure 51. Communication Port
5. If your unit is wired to an external bypass switch, you must perform
a voltage and phase check (Steps 6 through 16). Otherwise, skip to
Step 17.
C A U T I O N
Before operating the bypass switch, use the following procedure to check the wiring for
correct installation. To prevent damage to the load, turn off the main circuit breaker in the
load service panel or verify that the load cannot receive power from the UPS.
6. At the bypass switch, press the red button and turn the switch to
UPS.
7. Remove the six screws in the bypass switch front cover and
remove the cover to gain access to the terminal block for voltage
measurements.