Alcad AT30 SERIES, Инструкция по эксплуатации и обслуживанию

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SERVICING THE AT30
59
Replacing the control circuit board (A1) and/or gate driver board (A15)
For a more detailed description of this procedure, please reference service
instruction (
JD5012-00 ).
CAUTION: The main control printed circuit board (A1) is sensitive to
damage from static discharges. Leave the board in its anti-static bag
until you are ready to install it. Ground yourself before handling the
board by touching the ground stud on the back of the door. Handle
the board only by the edges.
Turn off all power to the charger. Disconnect the battery from the output
terminals. Note that the control circuit board and gate driver board are
mounted together as a pair. Remove the signal wire harness plug from the
upper left edge of the boards. If present, remove the summary alarm
contact remote wires from TB3 on the bottom of A1. If the optional
temperature compensation probe is installed, remove the main wires from
TB8 on the bottom of A1 and remove the shield wire from J6 at the top-
left side of A1. Make sure all wires are detached from the two pc boards.
The boards are mounted on ten 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 board(s) 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. Re-
connect the signal wire harness plug 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
charger.
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)
De-energize and lock out all ac and dc voltage sources to the AT30.
Check with a voltmeter before proceeding. This includes remote sense
wires if they were installed. Open the front panel, and remove the safety
shield. Remove the mounting screws for the circuit breaker on the circuit
breaker bracket, and carefully remove the circuit breaker from the charger.
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.