FTS 609
November 17, 1993
2
A qualified technician who is familiar with the Fortress should replace the batteries. The
technician must take these precautions:
1.
Protective clothing and eye wear must be worn. Batteries contain caustic acids and toxic
materials and can rupture or leak if mistreated. Remove rings and metal wristwatches or
other jewelry. Don’t carry metal objects in pockets where they can fall into the UPS.
2.
Tools must be insulated so that they will not short battery terminals. At no time can a tool
be allowed to short a battery terminal to another battery terminal or to the UPS cabinet.
Do not lay tools or metal parts on top of batteries.
3.
When connecting cables, never allow a cable to short across a battery’s terminals or the
string of batteries or to the UPS cabinet.
4.
Align the cables on the battery terminals so that the connector will not contact any part of
the UPS cabinet even if the battery is moved. Keep the cable away from any sharp metal
edges.
5.
Install the battery cables so they cannot be pinched by the UPS cabinet.
Section 1: Removing the Fortress’ Cover
1. Before you replace the batteries, shut off the equipment plugged into the Fortress and unplug the
equipment.
2. Next, follow these three steps:
•
Turn the On/Off (1/0) switch on the back of the Fortress off (to 0).
•
Unplug the Fortress.
•
Remove the power cord from the back of the UPS.
3. Carefully turn the Fortress on its side, and look at the bottom of the UPS. Remove the four screws and
washers in the corners (shown in Figure 1 below).
Note:
Some models do not have washers.
Figure 1
