3
PRODUCT FEATURES
The purpose
of this booklet is to provide assembly,
installation and operation information concerning the Allstar
LT 50 Commercial Vehicular Garage Door Openers and related
Accessory Products.
NOTICE
IT IS IMPORTANT THAT THIS INSTRUCTION
MANUAL BE READ AND UNDERSTOOD
COMPLETELY BEFORE INSTALLATION OR
OPERATION IS ATTEMPTED.
NOTICE
THE IMPORTANT SAFEGUARDS AND
INSTRUCTIONS IN THIS MANUAL CANNOT
COVER ALL POSSIBLE CONDITIONS AND
SITUATIONS WHICH MAY OCCUR DURING ITS
USE. IT MUST BE UNDERSTOOD THAT
COMMON SENSE AND CAUTION MUST BE
EXERCISED BY THE PERSON(S) INSTALLING,
MAINTAINING AND OPERATING THE
EQUIPMENT DESCRIBED HEREIN. DO NOT
USE THIS EQUIPMENT FOR ANY OTHER THAN
ITS INTENDED PURPOSE - OPERATING
OVERHEAD GARAGE DOORS.
The Model LT 50 drawbar operators are used in the following
applications:
-Restricted Duty, Limited Cycle Commercial installations only.
-Rate of operation shall not exceed 6 cycles of openings and
closings per hour, maximum of 40 cycles per day.
-Indoor Use Only.
-Up to 12 foot high doors with a maximum weight of 400
pounds.
-Use with Safe Finish™ Photosystem (light beam across the
door opening) or foam/pneumatic reversing edge door
components - REQUIRED where the push button is out of sight
of the door or any other automatic, remote or manual control is
used to activate the door.
STANDARD FEATURES:
Sensing System:
A built-in sensing system detects
obstructions during door operation. If in the downward (close)
travel mode, the Opener will sense an obstruction and reverse
the direction of the door. In the open mode, the Opener will
stop. Since all doors are different, the Sensing System has
independent adjustments for customizing the level of force
required for the normal opening and closing of specified doors.
( Page 16)
Close Limit Switch:
In winter months it's common for small
pieces of ice or packed snow to be trapped under the door.
Ground swelling can also effect the close limit setting of the
Opener. The LT 50 Close Limit Switch overrides the Sensing
System during the last one inch of closing travel and prevents
the door from reversing if it encounters an obstruction at this
point.
Alternating Action Operation:
The mechanical wall
pushbutton functions in an Open/Stop/Close/Stop mode
in normal operation. (Page 18)
Manual Release:
A pull cord allows separation of the
drive mechanism and manual operation of the door when
desired, as in the event of a power failure. (Page 19)
Automatic Reconnection:
Once power is restored,
or automatic operation of the door is again desired,
initiating operation in the normal manner (Push Button,
Radio Control, etc.) will effect automatic reconnection of
the Manual Release Mechanism. (Page 19)
Connections For Continuously Monitored
Auxiliary Entrapment Protection Devices:
The
LT 50 Safe Finish™ Photosystem (light beam across the
door opening) can be easily connected to the Opener.
Control circuitry monitors the device continuously for
proper operation. (Page 11) Consult the factory for
compatibility of other auxiliary entrapment protection
devices.
Momentary Contact To Close:
The standard close
operation mode is momentary contact of the mechanical
Push Button, and a portable Radio Transmitter can be
used to close the door (Page
Z
18). The internal Sensing
System (described earlier) detects obstructions in the
door’s path.
Constant Contact To Close:
For utmost safety, after
installation of a Safe Finish™ Photosystem, the standard
operation mode can be configured to require constant
contact on the mechanical Push Button to close the door
if the photosystem fails or if there is a break or short in
the wiring. In this mode of operation, a Radio
Transmitter cannot be used to close the door. (Page 18)
Safe Finish™ Photosystem:
An invisible infrared
beam of light guards the door opening and reverses a
downward moving door if the beam is broken by a
stationary or moving object. The LT 50 motor control
circuitry can be configured to constantly monitor the Safe
Finish Photosystem for proper operation.
OPTIONAL FEATURES:
Digital Radio Controls:
The LT 50 Opener covered
in this Manual can be fitted with optional Radio Controls.
Up to 19,683 private codes can be easily selected without
use of tools. (Page
Z
15)
Deluxe Wall Push Button:
A feature-packed
accessory unit, the Deluxe Wall Station allows access to
all of the Opener's functions. Open/Close button permits
full control of the door’s operation. The Opener's
built-in light can be turned on or off independent of door
operation. A Security Switch allows the Opener to be
deactivated for extended periods of time. (Page 19)
Keyless Entry System:
A tamper resistant outdoor
keypad, the optional Keyless Entry System permits entry
to the garage without use of key or radio transmitter.
Easily programmable, it accommodates four separate
access codes of 4 digits. Lighted Buttons enhance
nighttime use.
