17
INSTALLATION—PNEUMATIC KILL SWITCH CHECK AND ADJUSTMENT
Air Bleed
Adjustment
Screw (One
on Front and
One on Back
Kill Switch (On
Same Side as
Door Motor)
A7500202
PVC Hose Must
Be Tight on
Air Input Post
A7500324
Figure 44
Bottom Bar Assembly
Figure 46
3. The air bleed has been set at the factory and should
not require adjustment. To adjust the air bleed, turn
the air bleed adjustment screws located on the front
and back of the switch fully clockwise, but do not
overtighten. Then turn each screw
counterclockwise one full turn. (See Figure 46.)
4. To adjust the kill switch sensitivity, see “Kill Switch
Sensitivity Adjustment” on page 17.
Kill Switch Air Bleed Adjustment
1. The kill switch is mounted in the bottom bar assembly,
on the same side as the door motor. To access the
switch, first remove the access cover. (See Figure 45.)
Access Cover
Kill Switch Sensitivity Adjustment
The kill switch assembly is a normally closed contact.
The PVC hose is on the upper air input post.
1. Remove the wires from the contact terminals and
attach an ohmmeter across the two terminals.
(See Figure 47.)
2. To adjust the switch turn the small adjusting screw
located on the face of the switch clockwise or
counterclockwise until continuity is achieved.
3. Turn the screw 2 fully clockwise for final adjustment.
NOTE: The ohmmeter should continue to show
continuity. Turning the screw clockwise
decreases sensitivity. Turning the screw
counterclockwise increases sensitivity.
Bottom Bar
Remove Wires
to Test and
Adjust Switch
Kill Switch (On
Same Side as
Door Motor)
A7700009
Figure 45
2. Make sure the clear PVC hose is tight on the air
input post so that air leakage cannot occur and
vibration will not cause the hose to fall off. Also
make sure the hose is not kinked. (See Figure 46.)
Sensitivity
Adjustment Screw
A7500202
Figure 47
PVC Hose Must
Be Tight on Air
Input Post
4. Reconnect the wires onto the switch. Replace the
access cover on bottom bar.
Breakaway Tabs
