Re: garage door opener broken

badgolferman wrote:

Okay, I have replaced the cog gear and greased up the system good. The
opener itself works and moves the chain back and forth. My problem is
the travel of the chain now.

I got it to where the door was moving fine up and down but it wouldn't
stay down when hitting the ground; it would come back up everytime.
After playing with the up/down travel adjustments now it's all messed
up and only travels short distances and puts a big bow in the rail when
it reaches the door. I have released the door from the chain for now
but have become tired of messing with it before I have to go to work.

It seems I must first get the travel distances correct then the forces.
What should I do next? Any suggestions on how to get the damn door to
operate properly?

Directions are on page 28-30 of the manual. Don't have a manual? Try this.

Adjustment Section: Pages 28 - 30

//limit adjust on the SIDE of the box//
Adjustment Step 1
Adjust the UP and DOWN Limits Do not make any limit adjustments until the
safety reversing sensors are completely installed.
Limit adjustment settings regulate the points at which the door will stop
when moving up or down.
The door will stop in the up direction if anything interferes with door
travel. The door will reverse in the down direction if anything interferes
with the door travel (including binding or unbalanced doors).
To operate the opener, press the Door Control push button. Run the opener
through a complete travel cycle.
o Does the door open and close completely?
o Does the door stay closed and not reverse
unintentionally when fully closed?
If your door passes both of these tests, no limit adjustments are necessary
unless the reversing test fails (See page 30).
Adjustment procedures are outlined below. Run the opener through a complete
travel cycle after each adjustment.
Repeated operation of the opener during adjustment procedures may cause the
motor to overheat and shut off. Simply wait 15 minutes and try again.
Read the procedures carefully before continuing on to Adjustment Step 2. Use
a screwdriver to make limit adjustments.
..
Improper adjustment of the travel limits will interfere with the proper
operation of the safety reverse system. The door might not reverse properly
when required and could seriously injure or kill someone under it. Test the
safety reverse system following all adjustments to the travel limits. See
page 30.


Left Side Panel
Adjustment Label

How and When to Adjust the Limits

If the door does not open completely
but opens at least five feet:
Increase up travel. Turn the UP limit adjustment screw clockwise. One turn
equals 2" of travel.
NOTE: To prevent the trolley from hitting the cover protection bolt, keep a
minimum distance of 2-4" between the trolley and the bolt.
o If door does not open at least 5 feet:
Adjust the UP (open) force as explained in Adjustment Step 2.
o If the door does not close completely:
Increase down travel. Turn the DOWN limit adjustment screw counterclockwise.
One turn equals 2" of travel.
If door still won't close completely and the trolley bumps into the pulley
bracket (see page 4 or 5), try lengthening the door arm. (see page 26).

If you have adjusted the door arm to the maximum length and the door still
will not close completely, lower the header bracket. See Installation Step
1, pages 12 and 13.
o If the opener reverses in fully closed position:
Decrease down travel. Turn the DOWN limit adjustment screw clockwise. One
turn equals 2" of travel.
o If the door reverses when closing and
there is no visible interference to travel cycle:
If the opener lights are flashing, the Safety Reversing Sensors are either
not installed, misaligned, or obstructed. See Troubleshooting, page 23.
Test the door for binding: Pull the emergency release handle. Manually open
and close the door. If the door is binding, call for garage door service. If
the door is not binding or unbalanced, adjust the DOWN (dose) force. See
Adjustment Step 2.

28
Adjustment Step 2
Adjust the Force

//on the BACK of the box//

Force adjustment controls are located on the back panel of the opener. Force
adjustment settings regulate the amount of power required to open and close
the door.
The door will stop in the up direction if anything interferes with its
travel. The door will reverse in the down direction if anything interferes
with its travel (including binding or unbalanced doors).
If the forces are set too light, door travel may be interrupted by nuisance
reversals in the down direction and stops in the up direction. Weather
conditions can affect the door movement, so occasional adjustment may be
needed.
The maximum force adjustment range is 260 degrees, about 3/4 of a complete
turn. Do not force controls beyond that point. Turn force adjustment
controls with a screwdriver.


Too much force on the door will interfere with the proper operation of the
safety reverse system. The door might not reverse properly when required and
could seriously injure or kill someone under it. Do not increase the force
beyond the minimum amount required to close the door. Do not use the force
adjustments to compensate for a binding or sticking garage door. Test the
safety reverse system following all adjustments to force levels. See page
30.
Force
Adjustment Control

Back panel of door opener

Adjustment Label
How and When to Adjust the Forces

Test the DOWN (close) force
Grasp the door bottom when the door is about halfway through DOWN (close)
travel. The door should reverse. Reversal halfway through down travel does
not guarantee reversal on a two-inch obstruction. See page 30. If the door
is hard to hold or doesn't reverse, decrease the DOWN (close) force by
turning the control counterclockwise.
Make 10 degree turn adjustments until the door reverses normally. After each
adjustment, run the opener through a complete cycle.
Test the UP (open) force
Grasp the door bottom when the door is about halfway through UP (open)
travel. The door should stop. If the door is hard to hold or doesn't stop,
decrease UP (open) force by turning the control counterclockwise.

Make 10 degree turn adjustments until the door stops easily. After each
adjustment, run the opener through a complete travel cycle.
If the door doesn't open at least 5 feet
Increase UP (Open) force by turning the control clockwise. Make 10 degree
turn adjustments until door opens completely. Re-adjust the UP limit if
necessary. After each adjustment, run the opener through a complete travel
cycle.
If the door reverses during the down (close) cycle and the opener lights
aren't flashing
Increase DOWN (close) force by turning the control clockwise. Make 10 degree
turn adjustments until the door completes a close cycle. After each
adjustment, run the opener through a complete travel cycle. Do not increase
the force beyond the minimum amount required to close the door.

29
Adjustment Step 3
Test The Safety Reversing Sensor
o Press the remote control push button to open the
door.
o Place the opener carton in the path of the door.
o Press the remote control push button to close the
door. The door will not move more than an inch,
and the opener light will flash.
Professional service is required if the opener closes the door when the
safety reversing sensor is obstructed.
The garage door opener will not close from a remote control if the indicator
light in either sensor is off (alerting you to the fact that the sensor is
misaligned or obstructed).
The garage door can be closed by pressing and holding the Door Control push
button until down travel is completed.

Without a properly working safety reversing sensor, persons (particularly
children) could be seriously injured or killed if trapped by a closing
garage door. Repeat this test once a month.

Adjustment Step 4
Test the Safety Reverse System
Test:
o Place a one-inch board (or a 2x4 laid flat) on the
floor, centered under the garage door.
o Operate the door in the down direction. The door
must reverse on striking the obstruction.
Adjustment:
If the door stops on the obstruction, it is not traveling far enough in the
down direction.
o Increase the DOWN limit by turning the DOWN
limit adjustment screw counterclockwise 1/4 turn.
o Repeat the test.
On a sectional door, make sure limit adjustments do not force the door arm
beyond a straight up and down position. See the illustration on page 26.
o When the door reverses on the one-inch board,
remove the obstruction and run the opener through
3 or 4 complete travel cycles to test adjustment.
If the door will not reverse after repeated adjustment attempts, call Sears
Service Center for garage door opener service.

GARAGE DOOR

Failure to test and adjust the safety reverse system may result in serious
injury or death to persons trapped by a closing garage door. Repeat this
test once a month and adjust as needed.
(One-Inch board (or a 2x4 laid flat)
Important safety check
Repeat Adjustment Steps 1,2 and 4 after:
o Each adjustment of door arm length, force controls
or limit controls.
o Any repair to or adjustment of the garage door
(including springs and hardware).
o Any repair to or buckling of the garage floor.
o Any repair to or adjustment of the opener.

30
.

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