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SETTINGS & ADJUSTMENTS
3. Place the door in the door clamps with the top towards the stop you want to set.
4. Position the door so that you can see the line centered in the back-up block lock bore hole, then clamp
the door. Norfield recommends that you draw a line on the back up block in the center bottom of the
hole to increase accuracy of this step.
5. Position the door stop assembly against the top of the door, without moving the stop and tighten the
locking screws.
6. With the drill motors OFF and the door clamped, step on the cycle start foot pedal, when the lock
drill bit contacts the door unclamp the door, this will return and reset the drill cycle. Remove the door
from the machine and measure from the top of the door to the drill mark left on the door by the bit.
7. Adjust the door stop screw until you have achieved 44” (or the dimension you desire).
FIGURE 3-6
1/16” TO 1/8”
HEADER CLEARANCE
DOOR STOP
JAMB STOP
FIGURE 3-5
LOCKING
SCREWS
DOOR STOP
ADJUSTMENT
JAMB STOPS
INDEX BAR
3-9 HEADER CLEARANCE:
Header clearance is the gap between the top of the door and the head jamb, usually 1/16” to 1/8”.
Normally this dimension will not require changing. However, if an adjustment is necessary check the
lock height first and adjust the jamb stop only if the lock height is correct. Adjusting the door stop to
change header clearance will result in an incorrect lock height.