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English
Sensitive information systems can be further safeguarded by following these guidelines:
■Verify that all electrical outlets are properly grounded.
■Connect information systems to a different electrical service branch than heavy motor loads
like air conditioners, copiers, refrigerators, and heavy industrial machinery.
■Plug all power protection and information system equipment into the same branch where
possible.
4.4 Install Accessory (Optional)
Some accessories connect to the computer interface (DB-9) port, while others install in the acces-
sory slot. See the literature accompanying the accessory to determine proper installation. The
screws holding the slot cover are #2 Phillips head type.
To use the computer interface port, connect the accessory to the DB-9 connector and tighten
down the connector’s screws.
Connect the optional battery pack (3000 VA model only) according to the instructions with the
battery pack.
4.5 Connect to Utility
Plug the unit into a two-pole, three-wire, grounding receptacle only. Avoid using extension cords
and adapter plugs.
4.6 Charge the Battery
The unit charges its battery whenever it is connected to utility power. For best results, charge the
battery for 2.5 hours before use. It is acceptable to use the unit without first charging the battery,
but on-battery run time may be reduced until the battery charges.