13
STEP 7
Programming Current Sensing
The
835/836
control boards incorporate a safety feature that will put the op-
erator into a hard shutdown mode if the control board detects a current sense
two consecutive times during a cycle. This hard shutdown condition can only
be reset by shorting the
FIREBOX
or
UL
connectors on the left side of the
control board to ground. This condition may also be reset by pressing the
HARD SHUTDOWN RESET
button located toward the upper right hand cor-
ner of the control board. If a firebox is used in the installation, The firebox
door (optional) should be opened and closed to reset the control board.
The following instructions must be followed at installation for proper safety assurance.
All limits should be set before beginning this procedure.
This new procedure applies to revision
31
or higher firmware.
1. Press and hold the
LED ENABLE
button for five seconds. The
STOP LED
will blink
indicating that the board is in learn mode.
3. Cycle gate for 3 full cycles. The
STOP LED
will stop blinking indicating that the board
is now ready for normal operation
4. Test the auto reverse sensitivity to ensure maximum safety protection. The current
sensitivity adjustment pot may be adjusted to decrease or increase sensitivity.
8. Refer to the
835/836 Operator Control Board Manual
to set other options such as
program switch options and close timer adjustments.
Installation is now complete.
Note: Program switch #9 is no longer functional and the current sense may be readjusted
at any time.
CLOCKWISE
Less sensitivity
Gate is harder to
current sense
COUNTER CLOCKWISE
More sensitivity
Gate is easy to current
sense
