User`s manual

6
CAUTIONS:
It is recommended that you turn the UPS off and disconnect it from the
AC wall outlet prior to connecting or disconnecting the battery terminals.
If battery packs MUST be changed while the UPS is supplying power to
protected equipment, they can ONLY be changed while the AC line is
supplying power. DO NOT attempt to replace batteries or battery packs
while the UPS is in battery backup mode. Be extremely careful while
plugging or unplugging additional battery packs. Insure that the cable
connectors have the proper polarity aligned before plugging them
together. Improper alignment may result in a short circuit that can
destroy the battery packs and the UPS, as well as cause a fire and injury
hazard.
If a unit must be opened to replace the batteries, the following
precautions must be followed.
1. Disconnect all receptacles, line cords and battery connectors
BEFORE removing the case screws.
2. Remove watches, rings, and other metallic jewelry before servicing
the batteries.
3. Use tools with insulated handles.
4. Wear protective gloves and eyewear.
5. Do not lay tools or other objects on top of the batteries.
6. It is recommended that you make yourself a sketch of the batteries
and their connections BEFORE you attempt to remove the old
batteries. Insure all connections to the new batteries are EXACTLY
the same as they were on the old batteries.
7. Verify that all battery brackets and mechanical fittings are replaced
exactly as they were removed.