Jackshaft
Model LGJ

Model
LGJ is a light-duty gear-reduced jackshaft operator for rolling grilles
and shutters. It features an internal door lock sensing circuit, a compact
design and a floor level disconnect.
Standard
Features
Motor:
Powerful 1/4 HP, 115V single phase motor with instant reverse and internal
automatic reset thermal overload. Removable without affecting limit
switch settings.
Wiring
Type: The Model LGJ is easily wired for C2 or B2 wiring. The operator
is pre-wired to accept a sensing device, photoelectric control, radio
controls and most types of access control equipment.
Operator/Motor
Control: Solid State Circuit (G2) with Door Lock Sensing Circuit (NEMA
1 enclosure).
Control
Circuit: 24V NEC Class 2.
Floor
Level Disconnect: Floor level disconnect provides emergency manual operation.
Drive
Reduction: Heavy-duty wormgear-in-oil-bath speed reducer.
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 with durable baked-on powder coat finish.
Easily converted for right or left mounting.
Door
Lock Sensing Circuit: The Model LGJ includes a speed sensor in the electrical
enclosure and a sensing circuit which sends a signal to stop the motor
if the door jams, such as would be caused by failure to release the
lockbar of a rolling grille before starting the operator. In addition
to stopping the motor, if the door or grille is in fully closed position,
it will drive the motor in the opposite direction for approximately
1 inch of door travel. This releases the pressure on the lockbar thus
allowing the lock to be easily opened.