Chamberlain 1000 Owner's Manual page 4

ADJUSTMENT STEP 3
Test Safety Reverse System
PROCEDURE: Place a one-inch obstacle on the floor
under the garage door. Operate door in DOWN direction.
The door MUST reverse on the obstruction.
If the door STOPS on the obstruction, it is not traveling
far enough in the DOWN direction. Increase the DOWN
limit by turning DOWN
counterclockwise 1/4 turn. REPEAT TEST
NOTE: Make sure limit adjustments do not force the
door arm beyond a straight up and down position.
See the Illustration on Page 18/19.
When the door reverses on the one-inch obstacle,
remove the obstruction and run the opener through a
complete travel cycle
Door MUST NOT reverse in closed position. Repeat
Adjustment Steps 1, 2 and 3 if necessary.
______________________________________________________________________________________________________
THE PROTECTOR SYSTEM
Installation of Optional Safety Feature
After opener has been installed and adjusted,
THE PROTECTOR SYSTEM accessory can
be installed.
Instructions are included with this optional
device.
limit adjustment screw
.
THE SAFETY REVERSE SYSTEM TEST IS
_
IMPORTANT. GARAGE DOOR MUST
REVERSE ON CONTACT WITH A ONE-INCH
OBSTACLE PLACED ON THE FLOOR. FAILURE TO
PROPERLY ADJUST OPENER MAY RESULT IN SERIOUS
PERSONAL INJURY FROM A CLOSING GARAGE DOOR.
REPEAT TEST ONCE
REPEAT ADJUSTMENT STEP 3 AFTER:
• EACH ADJUSTMENT OF DOOR ARM LENGTH, CLOSE
FORCE OR DOWN LIMIT.
• ANY REPAIR OR ADJUSTMENT OF GARAGE DOOR
(INCLUDING SPRINGS AND HARDWARE).
• ANY REPAIR OR BUCKLING OF THE GARAGE FLOOR.
• ANY REPAIR OR ADJUSTMENT OF THE GARAGE
DOOR OPENER.
THE PROTECTOR
ADDITIONAL MEASURE OF SAFETY AGAINST A
SMALL CHILD BEING CAUGHT UNDER A GARAGE
DOOR. It uses an Invisible beam which, when broken by
an obstruction, causes a closing door to open and
prevents an open door from closing. STRONGLY
RECOMMENDED FOR HOMEOWNERS WITH YOUNG
CHILDREN.
22
A
MONTH AND ADJSUT AS NEEDED.
SYSTEM PROVIDES AN