Exide Technologies Section 94.40 - Manual (Page 63)

SERVICING THE AT30
59
Replacing the Main Control (A1) and/or Gate Driver (A15) pc boards
For details of this procedure, refer to service instruction (
JD5012-00
).
CAUTION: Printed circuit boards A1 and A15 are sensitive to
damage from static discharges. Leave replacement pc boards in
their anti-static bags until you are ready to install them. Ground
yourself before handling these boards by touching the ground stud
on the back of the door. Handle these boards only by their edges.
Turn off and remove all power to the AT30. Remove the plexiglas safety
shield. Disconnect the battery from the dc output terminals TB1(+/-).
Note that the Main Control pc board (A1) and the Gate Driver pc board
(A15) are mounted together as a pair. Remove the signal wire harness
plugs from the top and left edges of the boards. If present, remove the
summary alarm wiring from TB3 at the bottom of A1. If the optional
temperature compensation probe is installed, remove the wires from TB8
on the bottom of A1, and remove the shielded wire from J6 at the top-left
side of A1. Make sure all wires are detached from the two (2) pc boards.
The boards are mounted on ten (10) plastic standoffs. Compress the tab
on each standoff, and pull the boards toward you until they clear all the
standoffs. Separate the boards, if you are replacing only one, and then
reconnect the replacement board. Put the replacement boards in place on
the front panel with the same orientation, and push them onto the
standoffs. Be sure that the boards are fully seated on all ten standoffs.
Reconnect the signal wire harness plugs to the boards, matching the
orientation when removed. If earlier removed, reconnect any wires to
TB3, TB8 and J6 on A1. See Section 2.1 for the steps to restart the AT30.
If your charger parameters (float voltage, etc.) are different from the
factory preset values, you should program in the new values now. See
Section 2.3. You should also recalibrate the dc voltmeter according to
Section 2.3.7.
Replacing the ac input or dc output circuit breaker (CB1/CB2)
Turn off and remove all power to the AT30. Remove the plexiglas safety
shield. Disconnect the battery from the dc output terminals TB1(+/-).
This includes remote sense wires if they were installed. Check with a
voltmeter before proceeding.
Remove the mounting screws from the circuit breaker on the mounting
bracket, and carefully remove the breaker from the AT30. Remove the
wires from the terminals, one at a time, and transfer the wires to the
terminals of the replacement breaker. Be sure the terminal fasteners are
tight. Install the replacement breaker into the bracket, reversing the
procedure above, using the original mounting screws.