User Manual

FA Rev. 02-10 D25
For more information, please call 210.533.1231.
Description______________
D2B.3 Operators are high security
locking and operating systems for
individual sliding doors with a maximum
weight not exceeding 450 pounds.
Applications_____________
D2B.3 Operators should be specified for
security entrances, safety vestibules,
corridor doors, or sallyports where
remote electric control and chain drive
are desirable.
Functions________________
Unit unlocks, opens and locks open; or
unlocks, closes and deadlocks closed a
corridor door. A door stopped in mid-
travel may be opened or closed
manually. Direction of movement of a
door may be reversed electrically. In
event of blockage, a torque limiter slips
to prevent motor damage. When
obstruction is removed, the door will
automatically continue movement to the
open or closed position. Pressure
exerted by a door in travel is factory-set
to approximately 40 pounds.
Individual doors may be manually
unlocked at the door.
Locking System__________
Doors operated by Type D2B.3
Operators deadlock closed automatically
at two points on the rear edge of the
door. When opened, doors
automatically lock in the open position.
Locking components are not exposed or
subject to inmate tampering. No
components project into the door
opening.
Testing__________________
D2B Series Operators have been in
service since 1966, and tested to
500,000 cycles.
Standard Features_______

Motor voltage – 120 VAC.

Rugged chain drive – Roller chain
provides consistent action of the door
under a variety of conditions and
installation variables.

Heavy duty construction – D2B.3
Operators are ruggedly constructed
for the detention environment.

Tamper-resistance – Openings in
housings are baffled to preclude
inmate tampering.

Adjustable torque limiter – Absorbs
start-up and closing shocks by
isolating the motor. Allows pressure
exerted by the motor to be set to the
needs of an individual door.
Adjustment is provided to
compensate for various sizes and
weights of doors.

Sloped-top housing – Resists hiding
of contraband.
Flat-top housing is provided where
operator must install close to ceiling.

Automatic locking – Doors lock
automatically at two points.

Indication switch – Monitors the
deadlocked condition of both locking
points.

Remote, electric unlocking – Each
door is controlled by a three-position
switch. (OPEN-OFF-CLOSE).

Emergency manual unlocking – In
event of power failure, a release port
may be opened by paracentric key.
This action allows use of a “T” handle
to unlock the door, and move it by
hand-applied pressure. The door must
be moved (restarted electrically or
mechanically) to the open or closed
position to lock.
Optional Features________

Door receiver column – A hinged
door locking column which places the
mechanical release mechanism
approximately 3'6" from the floor.

Location of mechanical release
mechanism – (Release Port) The
locked housing allows access to the
release mechanism on the reverse
side of the overhead housing.

Electrical control cabinet – Provides
a three-position switch for each
corridor door, accompanied by red
and green indication lamps.
Operating switches are labeled:
OPEN-OFF-CLOSED.
Indication lamps are labeled:
Red – OPEN., Green – CLOSED.
A two-position power cut-off switch is
also installed to cut power to the
controls.

G90 galvanized finish available.
FOLGER ADAM LOCKING DEVICES
Drive: Roller Chain
Release: Remote Electric,
Local Mechanical
Security
Level: Maximum
D2B.3 CORRIDOR
DOOR OPERATOR