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Installing/Adjusting the Door Restrictor
Code requires that a car door may not open more than 4" (102 mm) if the car is over 18" (457
mm) from floor level. This 18" is referred to as the "unlocking zone". On the underside of the
car door track is a steel lock block (bar latch) which catches the latch pawl (door restrictor) and
prevents the doors from being opened if the car is outside the unlocking zone.
This safety device is adjusted by means of two (2) screws on the skate arm and two (2) sliding
bolts on the restrictor locking plate.
1) To set up the door restrictor, move the door so that the door restrictor (Figure # 45, Item #
4) is opposite the steel lock block (Item # 5). Loosen the two (2) bolts securing the door
restrictor and move it in to catch the block. Set it to overlap the block by about 1/8"
(3 mm). Adjust the door restrictor so that it is straight and 90
o
to the track, then tighten the
bolts.
2) To test the door restrictor, try to open the doors. The doors should not open more than
2"-3" (51 mm - 76 mm) before the door restrictor strikes the lock block.
3) To unlock the doors, push the skate arm towards the leading edge. The spring loaded
skate arm will rotate to the side and the door restrictor will disengage from the block.
4) The movement of the skate that is necessary to allow the restrictor plate to clear the block
should be as little as possible. To set this, there is an adjustment screw about midway on
the red angle. This adjustment is very sensitive, 1/4 turn can make quite a difference to
the restrictor plate movement. The other adjustment screw is used for setting the center
of the skate arm when adjustments are required at the interlock rollers.
NOTE
Do not forget to check these adjustments. The doors will not operate properly if these are not
correctly set.
5) Finally, reattach the grip plate to the drive belt and recheck the operation of the restrictor
plate.
Wiring and Programming the Door Operator
There are only a few things that need to be wired and set up for Concord 2 speed doors to be
complete. Power and signal wires must be run to the operator from the car top junction box.
The optional photo-eyes must be connected and run to the junction box. The overcurrent
circuit must be set up and the microprocessor programmed to open and close the doors
properly.
1) First, wire up the power supply and signal wires. The Model SD door operator is shipped
disconnected from the junction box at the operator board. A clearly labelled flex cable
containing the controller wiring will be lying loose on top of the car.
2) Remove the flex connector lock nut, feed the wires into the controller enclosure and back
through the lock nut. Tighten down the nut.
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