User Guide
ADJUST LIMITS
TO AVOID SERIOUS PERSONAL INJURY OR
DEATH FROM ELECTROCUTION, DISCONNECT
ELECTRIC POWER BEFORE MANUALLY
MOVING LIMIT NUTS.
MAKE SURE THE LIMIT NUTS ARE POSITIONED
BETWEEN THE LIMIT SWITCH ACTUATORS
BEFORE PROCEEDING WITH ADJUSTMENTS.
1. Depress open limit switch. The operator should stop.
2. To increase door travel, spin nut away from
actuator. To decrease door travel, spin limit nut
toward actuator.
3. Adjust open limit nut so that door will stop in open
position with the bottom of the door even with top of
door opening.
4. Repeat Steps 1 and 2 for close cycle. Be sure close
limit actuator is engaged as door fully seats at the
floor.
If other problems persist, call our toll-free number for
assistance - 1-800-528-6563.
CLOSEOPEN
ADLSSLS
OLS
CLS
Open Limit
Nut
Travel Nut
Retainer
Close Limit
Nut
Actuator
Actuator
Open Limit
Switch
Close Limit
Switch
FOR HTC
Press Travel Nut Retainer
DOWN Toward Frame
TO DISENGAGE
DOOR HEIGHT + 4' - 5/8"
16-5/8"
MIN. CLEARANCE
OF 2" FROM HIGH
ARC OF DOOR TO
BOTTOM OF TRACK
13-7/16"
2-1/32"
5-1/2"
3-15/16"
3/4"
1-3/8"
26-5/8"
17-1/4"
MAX.
12-1/8"
Room required to open
hinged electrical box
7-1/2 "
2
REFER TO PAGE 2 OF HT OWNER'S MANUAL
NEMA UNIT
WARNING