Details
Applications
The 57700 is used with new construction and for complete replacement of existing sliding corridor and cell door locking and operating devices. The locking and operating mechanism is contained in fabricated sheet steel housings that wall mount.
Unitary Design
Electrical and mechanical parts associated with the locking and movement of a door are contained on a single plate that is non-handed and, thus, easily replaced irrespective of door travel direction. (This feature allows the user to stock one spare mechanism plate as a precaution against a breakdown.) Two point, concealed deadlocking is effected at the edge of the door – top and bottom – in both the open and closed positions. An adjustable rubber bumper fixes the open door position.
Built for Durability
All functional components of the 57700 are designed/selected to provide a long life cycle consistent with the frequent use and infrequent maintenance typical in many correctional facilities. Stamped steel parts are electroplated for corrosion resistance. The door rollers are of hardened steel and turn on permanently lubricated ball bearings.
An R.R. Brink Locking Systems proprietary, solid state, electronic circuit board and off-the-shelf mechanical relays serve to control door travel direction, speed, and force applied to an obstruction. The drive train is clutchless and door travel speed is adjustable electronically by a mechanism plate dial. When a door is blocked intentionally during travel, there is no potential for motor/drive train damage. The force that a moving door exerts on an object (e.g. a body part) can be limited via a trimpot setting. It is possible to reverse door travel direction continuously and instantly without mechanism damage.
The motor, plug-in relays and switches are standard products of domestic manufacturers and are recognized by independent testing laboratories. They are factory wired to quick-disconnect plugs or terminal strips allowing ease of replacement. The standard 57700 unit operates on 115VAC line voltage (230VAC is optional). The gearmotor is a direct current, permanent magnet type with right angle
reducer utilizing permanently lubricated bearings and gearbox. The gearhead power output is 1/8 HP, which is sufficient to unlock and move the weight of standard sized detention type doors (higher power output motors are available for heavier doors).
Remote Operation
Typically, individual door remote electrical operation of the 57700 is activated from a control room switch console. A key switch can be provided for electric control at the door. Cell door rows can be controlled simultaneously or in a pre-selected group. Limit switches located on the mechanism plate serve to signal door condition (i.e. closed and deadlocked or open/unlocked) by pilot lights at the control panel).
Manual Override
A manual means is always provided to enable unlocking without electric power. With a corridor or passage door, it is customary to provide a cable linkage from a hip-high paracentric key lock located in a front door receiver pilaster. With a cell row, individual door unlocking via key or tool from the horizontal mechanism housing and /or remote manual all door (gang) unlocking from end-of-row cabinet are typical. When manually unlocked, the door is not disconnected from the drive train and, therefore, is never in a frictionless or freewheeling condition where slam force can inflict bodily injury to a person in the doorway.
Component Specification
Standard (and optional) Door Locking and Operating Mechanism Components:
• Mechanism Plate – steel plate (9” x 15” x 1/4”) contains all functional components for locking, operating and indicating status of a door. The assembly is non-handed and is easily accessible and removable.
• Gearmotor –standard 115VAC & 5 amp (for ≤ 500 lb. door). Optional – (230VAC & 3 amp available)
• Rack and pinion drive standard.
• Electric door controls – Door movement speed is adjustable via a mechanism
plate knob (controlpot). Trimpots are provided to improve motor speed regulation and to set motor torque (i.e. a door’s pressing force). An electromechanical clutch and/or mechanical torque limiter are not employed.
• Track – cold drawn steel round (9/16” diameter) welded in place.
• Door hanger – 1/4” formed steel construction with 3/16” vertical adjustment via eccentric bushings (2) and 1” horizontal slotted adjustment to compensate for field misalignments.
• Door rollers – two solid steel wheels (cell door 2-3/4” O.D., corridor door 3-3/4” O.D.) fitted with double shielded, permanently lubricated ball bearings. Attachment to door carriage via a high tensile strength steel bolt/lock washer/hex nut. Tandem roller assemblies provided for ≥ 450lb door.
• Bottom door guide angle and wall guide – 1/4” thick steel construction.
• Top lock bolt – 7/8” diameter stainless steel
• Bottom lock – cast iron body encloses 13/16” diameter stainless steel locking ball.
• Door status indication switch – 15 amp @ 125/250VAC
Standard Mechanism Housing Material and Construction:
• Horizontal housing – formed from 3/16” thick steel sheet. Openings are baffled to block the insertion of foreign objects.
• Mechanism access cover – formed from 1/8” thick steel sheet, hinged for easy access and provided with hold-open cover props. Attachment to the horizontal housing is via pinned Torx® security screws. (Optionally, a common lock bar operated from a remote mechanical release cabinet can secure cell row housing covers.)
• Vertical lock bar enclosure – 10 ga. x 1-1/2” square steel tube
• Vertical door receiver/manual lock pilaster (optionally furnished with a manual paracentric key and/or electric key switch hip-high unlock control) – formed from 10 ga. sheet steel with 10 ga. steel cover plates attached with pinned Torx® security screws. Hard rubber bumpers (2) are incorporated in the receiver surface to cushion the impact of a closing door.
• Housing components – primed for paint.
Ordering Information
When ordering or specifying the 57700, indicate line voltage (115VAC
standard – 230VAC optional) and feature options, as follows:
a) No. 57700CD/F or U typically specified for cell doors with bent plate door receiver (i.e. no vertical manual lock/door receiver pilaster) and mechanical door unlocking from the overhead horizontal mechanism housing. For latter means, select either unlocking access from the front of the housing via tool from a lockable port (suffix “F”) or via paracentric key from the underside of the housing (suffix “U”). (Add a lockable mechanical release cabinet(s) for a cell row(s) requiring all door remote mechanical unlocking. Add wire raceway(s) and, if required, harness(s) for a cell row(s) not designed with individual conduit feeds.)
b) No. 57700ECP x K1S (or K2S) – usually specified for corridor/entrance doors with hip high manual paracentric key lock release in front door receiver pilaster – keyed one (K1S) or two (K2S) sides of doorway.
c) No. 57700ECP x K1S (or K2S) x 1KSC (or2KSC) – same as b) with the addition of a commercial cylinder key switch(s) on one or two sides of doorway.
d) No. 57700ECP x K1S (or K2S) x 1KSM (or 2KSM) – same as b) with the addition of a RRBLS mogul cylinder key switch(s) on one or two sides of doorway.
e) No. 57700ECP x K1S (or K2S) x 1KSP (or 2KSP) – same as b) with the addition of a RRBLS paracentric cylinder key switch(s) on one or two sides of doorway.
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