Craftsman 139.535006 - Manual (Page 18)

Adjustment
STEP1
Adjust UP and DOWN Limits
The limit adjustment screws are located on the left side panel of the opener chassis as shown LI MIT ADJUSTMENT
settings regulate the points at which the door will stop when moving up or down
NOTE: Door STOPS in UP direction if anything interferes with door travel. Door REVERSES in DOWN direc­
tion if anything interferes with door travel (including binding or unbalanced doors).
PROCEDURE: To operate opener, press Wall Con­
trol Push Button or transmitter push button. Run the
opener through a COMPLETE TRAVEL CYCLE. No
adjustments are needed when the door opens and
closes completely and does not reverse uninten­
tionally in down direction.
The following char t outlines adjustment procedures.
Run opener through a COMPLETE TRAVEL CYCLE
AFTER EACH ADJUSTMENT. NOTE: REPEATED
OPERATION OFTHE OPEN ER DURING ADJUST­
MENT PROCEDURES MAY CAUSE THE MOTOR
TO OVERHEATANDSHUTOFF. SIMPLYWA1T15
MINUTES AND TRY AGAIN. Read the chart care­
fully before proceeding to Step 2
, Pg. 19 Use a screw­
driver to make limit adjustments
Adjustmen! Label
LliVilT ADJUSTMENT CHART
IF DOOR DOES NOT
OPEN COMPLETELY
BUT OPENS AT
LEAST FIVE FEET
Increase UP travel by turning UP LIMIT adjustment screw in
clockwise direction as shown on label One turn equals 2
Inches of travel
If door doesn't open at least 5 feet, adjust OPEN FORCE as
explained in Step 2, Page 19
1. ON SECTIONAL DOORS:
Lengthen the door arm (See Step 10, Page 16).
IF DOOR DOES NOT
CLOSE COMPLETELY
If door arm is at maximum length, increase the DOWN travel
by turning the down limit adjustment screw in a counter
clockwise direction as shown on label. One turn equals 2
inches of travel.
If door still will not close completely, the header bracket is
positioned too high. Repeat Step 2, Page 11
2. ON ONE-PIECE DOORS:
Increase DOWN travel by turning the down limit adjustment
screw in a counterclockwise direction as shown on label. One
turn equals 2 inches of travel.
TEST DOOR FOR BINDING
IF DOOR REVERSES
WHEN CLOSING AND
THERE IS NO INTER-
Pull emergency release handle and manually open and close
the door. If door is binding, call a door ser viceman
1 . IF OPENER REVERSES BEFORE DOOR CLOSES FULLY:
FERENCETO
TRAVEL CYCLE
Adjust the CLOSE FORCE as explained in Step 2, Page 19
2. IF OPENER REVERSES IN FULLY CLOSED POSITION;
Decrease DOWN travel. Tur n the down limit adjustment screw
in clockwise direction. One turn equals 2 Inches of travel
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