UPS Startup

7.To password-protect the UPS On/Off function, press the ￿ or ￿ button to make your selection; then press the button. If a password is required, the UPS On and Off functions are accessible only after first entering the correct password value (0377).

ON OFF Password?

No

ESC

8.The UPS is now ready to operate, and displays the normal On/Off function screen.

These configuration parameters are accessible during normal UPS operation by pressing the Config button through the front panel display.

Balancing Receptacle Loads

For Powerware 9170 UPS models with low-voltage output receptacles, it is recommended to divide loads between upper and lower receptacles as equally as possible. (In some configurations, each set of receptacles is limited to one half of the total UPS capacity.) Whether the cabinet has one panel containing eight receptacles, two panels containing

16 receptacles, or three panels containing 24 receptacles, you should try to supply half of the UPS output through the upper half of the receptacles (X1) and the other half through the lower half of the receptacles (X2), as shown in Figure 44.

X1

X2

X1

X2

Figure 44. Balancing Receptacle Loads

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Powerware® 9170 User's Guide ￿ LTM-1344 B Uncontrolled Copy