11
MAINTENANCE
Weather conditions may affect the door operation which could require some re-setting of the opener’s
adjustments. Doors may swell and become heavier during wet periods, door hinges and rollers might bind
during cold periods. To insure safe operation of the door, perform the following tests, including any additional
test steps described.
Every Month
1 With the door closed, pull the red release handle to
disconnect the opener from the door.
2 From outside the garage, slowly open the door
manually all the way, and then close it all the way.
Notice if there is any binding, sticking or rubbing.
The door should move smoothly in both directions.
3 Raise the garage door about halfway up. Carefully
release the door and see if the door balances. It
should stay in place. Close the door.
NOTE:
If the garage door is unbalanced or the
door travel isn’t smooth, have a qualified garage
door professional adjust or repair the door.
4 To reconnect the opener, with the door closed flip
the release lever up and run the opener.
After Servicing the Opener
1 Perform the Safety Beam Test (see page 4).
2 Perform the Open and Close Limit Adjustments (see page 5).
3 Perform the Safety Reversal System Test (see page 6).
Every 6 Months
Check the belt or chain tension.
• For belt-drive rails, examine the length of the tension spring in the traveler. It should be about 1” long.
• For chain-drive rails, examine the spacing between the turnbuckle and the rail. The turnbuckle should be
slightly above the bottom of the rail.
NOTE:
Too much or too little chain tension will cause excessive sprocket noise.
Belt Adjustment
The tension spring in the traveler keeps the belt taut. The
factory setting for the tension spring length is .9” long. If
the tension spring is longer than 1”, adjust the belt.
1 Hold the traveler so the adjustment wheel is visible
through the large slot.
2 Use a flat blade screwdriver to turn the adjustment
wheel to compress the tension spring until its length is
between 0.9” and 1” long.
NOTICE
IF DOOR BECOMES OBSTRUCTED
PULL DOWN ON HANDLE
NOTICE
IF DOOR BECOMES OBSTRUCTED
PULL DOWN ON HANDLE
PULL TO RELEASE
THE TROLLEY
FLIP UP TO
RECONNECT
THE TROLLEY
NOTICE
IF DOOR BECOMES OBSTRUCTED
PULL DOWN ON HANDLE
NOTICE
IF DOOR BECOMES OBSTRUCTED
PULL DOWN ON HANDLE
PULL TO RELEASE
THE TROLLEY
FLIP UP TO
RECONNECT
THE TROLLEY
ADJUSTING A BELT-DRIVE
TIGHTEN
LOOSEN
TURN THE ADJUSTMENT
WHEEL UNTIL THE TENSION
SPRING IS ABOUT 1" LONG
ADJUSTMENT WHEEL
MEASURE THE TENSION
SPRING LENGTH
TRAVELER
Содержание LDCO 841
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