Craftsman 139.53225SRT1 Owner's Manual page 5

Beforeyou begin,surveyyourgarageareato
seewhether
any of the conditions below apply
to your installation.
Slack In chain tension
h;nom_ when
garage doorisclosed.
Header
WJ
FINISHED CEIUNG
S.p_ttnck_
& fastening
hardware Is required.
See page 17.
Accesscucx
O
3ap betweenfloorand bottomRevendngSensor
of doormustnot e_ceed I/4".
Safety ReversingSensor
Based on your particular requirements, there are
several installation steps which might call for
materials and/or hardware not included in the carton.
• Step 1, page 13 - Lock at the wall or ceiling above
the garage door. The header bracket must be
securely fastened to structural supports.
• Step 5, page 17 - Do you have a finished ceiling in
your garage? If so, a support bracket and
additional fastening hardware (not suppl!ed) may
be required.
• Safety reversing sensor, page 21 - Depending on
garage construction, wood blocks may need to be
securely fastened to mounting locations before
sensors are installed.
• Step 10, page 22 - Alternate floor mounting of the
safety reversing sensor will require hardware that
is not provided.
• Step 11, page 25 - Generally, a one-piece door
does not require reinforcement. If your door is
lightweight, you can refer to the information
relating to sectional doors on page 24.
• Step 11, page 25 - Depending on your door's
construction, you might need additional mounting
hardware for the door bracket.
• De you have an access door in addition to the
garage door? If not, Model 53702 Emergency
Key Release is required. See page 38.
• The gap between the bottom of the garage
door and the floor cannot exceed 1/4".
Otherwise, the safety reverse system may not
work propedy. See page 30. The floor or the door
should be repaired.
Closed Position
Cable
Pulley B rscket Cable Trolley
Header
Bracket T-rail
Straight Curved
Doo¢ Door
Garage Ann Arm
- Door
One-Piece Door With Track
Door
Straight
Bmcket Door
Ann
Rope&Handle
You may find it helpfu! to refer back to this page as
you proceed with the Installation of your opener.
5