Craftsman 13953403 user manual download (Page 18 of 24)

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Page 18 of 24
Adjustment
STEP
3
Test
Safety
Reverse
System
TH E SAFETY
REVERSE
SYSTEM
TEST
IS IM PORTANT.
THE
GARAGE
DOOR
MUSTREVERSE
ON
CONTACT
WITH
A ONE
INCH
OBSTACLE
PLACED
ON
THE
FLOOR.
FAILURE
TO
PRO-
PERLY
ADJUST
OPENER
MAY RESULT
IN SERIOUS
PERSONAL
INJURY
FROM
A CLOSING
GARAGE
DOOR.
REPEAT
TEST
AT LEAST
FOUR
TIMES
A YEAR
AN D ADJUST
AS NEEDED.
PROCEDURE:
Place
a 1-inch
obstacle
on the
floor
under
the
garage
door
Operate
door
in
DOWN
direction
The door
must
reverse
on the
obstruction
If a
SECTIONAL
door
STOPS
on
the
obstruction,
lengthen
door
arm until
the
door
reverses
in DOWN
direction,
(Refer
to Step
1O, FIG_C., Page
16
Fasten
SECTIONAL
DOOR
sections
together
to longest
possible
length),
If a ONE-PIECE
door
stops
on obstruction,
door
is
not traveling
far enough
in DOWN
direction,
Increase
the
DOWN
limit
by turning
DOWN
limit
adjustment
screw
counterclockwise
1/4
turn
REPEAT
TEST
When
the
door
reverses
on
the
1-inch
obstruction,
remove
obstruction
and
run opener
through
a com-
plete
travel
cycle.
Door
must
not
reverse
in closed
position_
If
it does,
repeat
Adjustment
Steps
2 and 3
ONE-PIECE
DOOR
I Inch
Obstruction
REPEAT
ADJUSTMENT
STEP
3 AFTER:
1. EACH
ADJUSTMENT
OF
DOOR
ARM
LENGTH,
CLOSE
FORCE
OR
DOWN
LIMIT.
2. ANY
REPAIR
OR ADJUSTMENX
OF GARAGE
DOOR (INCLUDING
SPRINGS
AND
HARDWARE).
3. ANY
REPAIR
OR BUCKLING
OF THE
GARAGE
FLOOR°
4. ANY
REPAIR
OR ADJUSTMENT
OF THE
GARAGE
DOOR
OPENER.
(Optional)
STE
P
4
Install
Infrared
Reversing
System
The
INFRARED
REVER_ING
SENSOR
provides
an
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
After
the
garage
door
opener
has
been
completely
installed
and
adjusted,
the
INFRARED
REVERSING
SENSOR
accessory
can be
installed
Instructions
are
included
with
this
optional
device
18
Sample