American Power Conversion 420 user manual

Summary of the content on the page No. 1

User’s Manual
Initial Start-Up
To obtain warranty coverage, please fill out and
return the warranty registration card now.
Inspection
Inspect the UPS upon receipt. Notify the carrier and
dealer if there is damage. The packaging is
Connect the Loads
Plug the loads into the output connectors on the rear
switch, make sure that all of the loads are switched
on.
Connect Telephone Surge Suppression
(Optional)
Install the UPS in a protected area that is free of
excessive dust and has adequate air flow.

Summary of the content on the page No. 2

Note: Please read the cautions in the APC Safety Guide . Loosen the wires by wiggling them while pulling straight back See your dealer or call the number in this manual for information on replacement Connect the new battery in place of the old. battery kits. For 280 and 420 models, order RBC 2. For 650 models, order RBC 4. Note: Small sparks at the battery connections are normal Battery replacement is a safe procedure, isolated from electrical hazards. You may Place the new battery in the UP