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The battery trays on the top shelf are disconnected and removed in a similar way to those on the
bottom shelf. When the last tray is reached, the wire connected to the rearmost terminal of the back
battery, marked with white tape, can be disconnected from the battery and placed aside. The last
battery tray can be removed.
Replacing UPS Batteries:
After the battery trays are removed from the cabinet, individual batteries
may be disconnected and replaced.
Exercise extreme caution
to insure that batteries are replaced
correctly, insuring proper battery polarities (See figure 11A or 11B for correct wiring). Batteries must be
secured back onto the tray using the fasteners originally supplied.
To reinsert the battery trays back into the cabinet, reverse the order that the trays were removed. This
means that the leftmost tray on the top shelf will be inserted first. The rearmost terminal on the back
battery (it should be a positive battery terminal) should be connected to the white taped wire whose
other end connects to the resistive shunt on the left side of the UPS. The tray may then be slid into
place. The 2
nd
tray may then be readied. A wire should be installed between the frontmost terminal of
the front battery on the 1
st
tray and the rearmost terminal of the rear battery on the 2
nd
tray. This
procedure is repeated for the remaining trays on the top shelf.
After the last tray is placed on the top shelf, the leftmost tray on the bottom shelf is readied. The
rearmost terminal of the rear battery on this bottom shelf is wired to the frontmost terminal of the front
battery on the leftmost tray on the top shelf using the longest of the wires. The remaining trays on the
bottom shelf are added to the system. After the last tray (the rightmost bottom tray) is moved into place,
the frontmost terminal of the front battery should be connected to the black wire that connects to the
right bottom terminal of the battery breaker.
