|
COMMERCIAL
PRODUCTS -
LIFTMASTER COMMERCIAL OPERATORS |
|
| |
 |
 |
|
|
|
Model MT is a medium-duty trolley
operator for standard lift sectional
doors. It features a high-starting
torque motor, a compact design,
quicket-gliding rail spacers and a
quick-mount swivel header bracket.
Standard Features:
Motor:
Powerful 1/2 HP,
single phase motor with instant
reverse and internal automatic reset
thermal overload. Removable without
affecting limit switch settings.
Auxiliary Reversal System:
Designed to
protect the door and door operator
from damage; if a closing door
strikes an obstruction, the
Auxiliary Reversal System will
detect the slip of the clutch and
reverse the door to the full open
position. This system is not a
substitute for a safety sensing
device such as a photo cell or
reversing edge.
Wiring Type:
All operators are
factory preset to C2 wiring
providing momentary contact to open
and stop, with constant contact to
close. Momentary contact to close
(B2 wiring) can be easily set. The
operator is pre-wired to accept a
sensing device, photoelectric
control, radio controls and most
types of access control equipment.
Rail Assembly:
High strength dual
L-rail track with exclusive nylon
quiet gliding chain guides on rail
spacers for quiet, smooth operation.
Includes quick-mount header bracket
which provides fast, swing-up
installation.
Operator/Motor Control:
Dependable dual
relay system (NEMA 1 enclosure).
Control Circuit:
24V NEC Class 2.
Drive Reduction:
First stage
heavy-duty 4L V-belt; second and
third stages #48 chain; output on
trolley #48 chain.
Emergency Disconnect:
Spring-loaded
disconnect for emergency manual
operation.
Pushbutton Station:
3-button station for OPEN/CLOSE/STOP
functions is standard for all
operators. Controls with one, two
and three buttons are available.
Construction:
NEMA 1 type
electrical box, heavy-duty 11-gauge
steel frame with baked-on powder
coat finish, all reduction sprockets
drilled and pinned to shafts.
Bearings:
Heavy-duty, oil
filled bearings.
External Radio Control Terminal:
External terminals
provide quick, convenient
connections for universal radio
controls.
Friction Clutch:
Adjustable
friction clutch helps protect
against damage to the door and
operator should the door meet an
obstruction. Works in conjunction
with the Auxiliary Reversal System.
Control Accessories and Options:
Solenoid Brake:
Solenoid actuated
brake prevents coasting. Order
operator BMT. Standard on 3/4 HP and
higher.
Auto-Reconnect Trolley Assembly:
Spring-loaded
trolley features nylon inserts for
quiet operation and auto-reconnect
feature eliminating the need to
manually reattach the door arm to
the trolley after emergency
disconnect.
Sensing Edge:
(Recommended)
Designed to sense an obstruction and
signal door operator to stop or
reverse as desired. Either an
electric or pneumatic sensing device
can be added to bottom edge of door.
Radio Control:
Universal
transmitters and receivers are
available to signal the operator to
open and/or close.
Key Switch:
Designed to
restrict operation of door to
authorized personnel only. Various
types available.
Interlock Switch:
Prevents
accidental operation of the door by
interrupting the control circuit.
Commercial Protector SystemTM (Recommended):
An inexpensive
"non-contact" photo safety sensor
designed to sense an obstruction and
signal the door operator to reverse
to open.
-
Safety of a non-contact infrared
reversing sensor
-
Fast and easy-to-install
-
Patented electrical interface
monitors system status at all
times
-
LED indicators for quick
alignment
-
One size fits all (for doors up
to 30 feet wide)
|
Return
to Shoals Overhead Doors' LiftMaster Commercial
Operators --->
|
