Controlled Products Systems Group MADCBB3 - Manual (Page 14)

14
WARNING - DISCONNECT BATTERIES AND AC POWER BEFORE
SERVICING ANY MECHANICAL OR MOVING COMPONENTS.
BATTERY CHECKOUT
When the batteries become weak the gate will begin to run
noticeably slower. NOTE: Batteries should only be checked when
you are sure they have had adequate time to fully charge. Turn off
the AC power and run gate for 5 to 10 cycles while observing low
battery indicator LED D12. If LED 12 comes ON, batteries are too
weak to function properly. If LED 12 does not light, then voltage
should be checked as they still maybe near failure. Correct
voltage is approximately 24.5Vdc. NOTE: If LED D12 does light,
gate will open to conserve batteries in this test or in a real power
loss, even if mode switch 8 on S2 is off. Return of AC power will
clear low battery indicator. Correct charge voltage is 27.5 Vdc
with batteries not connected (set with R63, shown on the Control
Board Layout page).
GATE NOT OPERATING
T R O U B L E S H O O T I N G
Gate will not operate.
Is the HBEAT flashing?
Check the battery
connections.
Check fuse F4.
Replace if blown.
No
Is the “BAT LO” LED on?
Is the HBEAT
flashing now?
Yes
Is S2-8 (open on AC fail) on?
Yes
No No
Is the AC PWR
LED on?
Yes No
Restore AC power
and/or turn AC
power switch ON.
Is the AC power
LED on now?
Is the shadow input active?
No
Yes
Yes No
Allow unit to charge
before operation.
Check fuse F3,
Replace if blown.
No
Is the Safety, Backaway, or
Open input active?
No
Does the IRD light while
operating?
Clear the active input to
allow the gate to open.
Yes
Clear the active
input to allow the
gate to close.
Yes
No
Is the IRD flashing?
Make sure the gate is not binding, then
adjust the IRD. Verify the gate reverses
when obstructed.
Yes
Yes
The max timer (MRT) has expired. Remove AC and battery power
then reapply to reset. Inspect the belt for slippage and verify the
fast run timer settings are correct.