Craftsman 139.53920D owner manual Test the Safety Reversal System, Test The Protector System s

ADJUSTMENT STEP 3

Test the Safety Reversal System

TEST

•With the door fully open, place a 1-1/2" (38 cm) board (or a 2x4 laid fiat) on the floor centered under the garage door

•Operate the door in the down direction The door must reverse on striking the obstruction

ADJUST

. If the door stops on the obstruction it is not

traveling far enough in the down direction Increase the DOWN limit by turning the DOWN limit adjustment screw counterclockwise 1/4 turn

NOTE: 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 25

•Repeat the test

•When the door reverses on the 11/2" (38 cm) board, remove the obstruction and run the opener through 3 or 4 comp]ete travel cycles to test adjustment

°If the unit continues to fail the Safety Reverse Test call for a trained door systems technician

IMPORTANT SAFETY CHECK:

Test the Safety Reverse System after:

o Each adjustment of door arm length, limits, or force controls

o Any repair to or adjustment of the garage door (including springs and hardware)

•Any repair to or buckling of the garage floor o Any repair to or adjustment of the opener

__ : ___ z

ADJUSTMENT STEP 4

Test The Protector System s

-Press the remote control push button to open the door

•Place the opener carton in the path of the door

,Press the remote control push button to close the door The door will not move more than an inch

(25 cm), and the opener lights will flash

The garage door opener will not close from a remote if the indicator light in either sensor is off (alerting you to the fact that the sensor is misaligned or obstructed)

If the opener closes the door when the safety reversing sensor is obstructed (and the sensors are no more than 6" (15 cm) above the floor), call for a trained door systems technician

Without a properlyinstalledsafetyreversa]system persons (particularlysmalt children) could be SERIOUSLYINJUREDor KILLEDby a closing garage door"

•Safetyreversalsystem MUSTbetested everymonth

. If onecontrol (forceor travellimits) is adjusted the other control mayalso needadjustment

. After ANYadjustmentsaremade,the safetyreversa] system MUSTbe tested Door MUSTreverseon contact with 1-I12" high (38 cm) object(or 2x4 laid fiat) on the floor

*"( B cm) board (or a 2x4 laid feat)

Without a properly installedsafetyreversingsensor persons(particularlysmall children) could be SERIOUSLYINJUREDor KILLEDby a closing garage door

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