Electric Latch Pullback - MELR

Continuous-duty solenoid retracts the latch bolt(s) for momentary or maintained periods of time. Latch Pullback provides a remote means of unlocking exit devices.

Application

SecureBolt® Exit Devices, Rim Exit Devices, Surface Vertical Rod Exit Devices, Concealed Vertical Rod Exit Devices and Mortise Exit Devices.

Listings

UL listed for both Panic and Fire Exit Hardware.

Electrical Specifications

Requires 781N Controller (120VAC input, output sequencer for one or two devices). No substitutes; using other power sources voids warranty.  Requires a 4-wire electrical transfer pivot or hinge. See page 43 for controller information.

Solenoid

A dual retraction/holder-type solenoid. 6-9 Amp in rush @ 24VDC to 28VDC (.172 Amp holding-continuous duty.)  Device bolts remain retracted for as long as the device is energized.  Removal of power returns the device to the life safety, self-latching mechanical mode.  Interface with central or local fire alarm system, automatic door operators, access control systems, security alarm systems, and blow open door systems.  Note: This feature is not available

with Electric Dogging (M97) or delayed egress (D) on the same device.

How to Order

Specify Quick Code M94.

Features

Handing

Device is handed but easily field reversible.  Lever trim is handed.

Bar Length

Easily field cut to size.  Standard: 36" (914mm) bar fits 30"- 36" (762mm-914mm) door.  Optional: 24" (610mm) bar fits 24" (610mm) door; specify W024.  Optional: 48" (1219mm) bar fits 36"-48" (914mm-1219mm) door; specify W048.

Door Thickness

1-3/4" (44mm) standard.  Optional: 2" (51mm); specify D200.  Optional: 2-1/4" (57mm); specify D214.

Stile

Minimum width 4-1/2" (114mm).

Door Height

Standard top rod for 7' door.  All rods easily field cut to size.  Optional door heights up to 8’ available.  For door heights above 8’0” refer to ED5470(B).

Latchbolt

Top: 3/4" (19mm) throw, stainless steel pullman-type with automatic deadlatching.  Bottom: 5/8" (16mm) throw deadbolt, held retracted during door swing.

Vertical Rods

1/2" O.D. tubular brass, bronze or stainless steel with rod guides.

Materials

Heavy-duty cold-forged steel chassis; heavy gauge steel mechanisms, electroplated for corrosion resistance; finished parts are brass, bronze or stainless steel; stainless steel springs; nylon bearings.

Projection

3-1/4" (83mm) active, 2-3/4" (70mm) dogged.

Dogging

Standard on panic devices; single-point ¼ turn hex key dogging. Optional: less dogging, specify M51.  Optional: cylinder dogging; specify M52.  Optional: electric dogging; specify M97.  Mechanical dogging not available on fire rated devices.

Fasteners

Standard on panic devices: machine screws and wood door fasteners. Standard on fire rated devices: sex nuts and bolts. Optional on panic devices: sex nuts and bolts for use on wood, composite, or unreinforced metal doors; specify M54. Optional wood screws for use on approved fire-rated solid wood or wood core doors. Specify M64.

Strike

Top: adjustable roller strike with positive locking plate and shims.  Bottom: flush mounted.  Optional strikes available.

Functions and Trims

Through-bolted lever, knob, pull and thumbpiece trims available with wide range of functions.

Cylinders

Cylinder not included unless specified.

Shim Kit

Optional for mounting device over raised vision light molding; specify M58.

Warranty

Five-year limited.

Certification/Compliance ANSI

Meets A156.3, Type 2, Grade 1.  Meets A117.1 Accessibility Code.

UL /cUL

All devices listed for safety as panic hardware; devices comply with UL 305 standards for panic hardware. Three-hour fire-rated devices listed as fire exit hardware for A label and lesser class 4' x 8' single or 8' x 8' double doors; UL symbol on active case cover indicates listing.  Any retrofit or other field modification to a fire rated opening can potentially impact the fire rating of the opening, and Corbin Russwin, Inc. makes no representations or warranties concerning what such impact may be in any specific situation. When retrofitting any portion of an existing fire rated opening, or specifying and installing a new fire-rated opening, please consult with a code specialist or local code official (Authority Having Jurisdiction) to ensure compliance with all applicable codes and ratings.

California State Reference Code

This product has been approved by the California State Fire Marshal pursuant to section 13144.1 of the California Health and Safety Code.

NFPA

All exit devices comply with NFPA 101 Life Safety Code. All fire-rated devices comply with NFPA 80 Fire Doors and Windows.

ADA

Exit devices, lever trims and pulls comply with Americans with Disabilities Act.