Planning – Chamberlain 3595 User Manual

Page 4

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Safety Reversing Sensor

Support bracket &
fastening hardware
is required.
See page 11.

— — — — — — — —

Header Wall

FINISHED CEILING

Torsion
Spring

Extension
Spring

OR

Safety
Reversing
Sensor

Gap between floor
and bottom of door
must not exceed 1/4" (6 mm)

Access
Door

Wall-
mounted
Door
Control

Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 18 for details.

Motor Unit

Slack in chain tension
is normal when
garage door is closed.

Vertical
Centerline of
Garage Door

4

SECTIONAL DOOR INSTALLATION

Planning

Identify the type and height of your garage door. Survey
your garage area to see if any of the conditions below
apply to your installation. Additional materials may be
required. You may find it helpful to refer back to this page
and the accompanying illustrations as you proceed with
the installation of your opener.

Without a properly working safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door.
• The gap between the bottom of the garage door and the floor

MUST NOT exceed 1/4" (6 mm). Otherwise, the safety
reversal system may not work properly.

• The floor or the garage door MUST be repaired to eliminate

the gap.

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