Cal-Royal N-MR7700 Series - User Manual

INSTALLATION INSTRUCTION
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AL-R
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BEFORE INSTALLING DEVICE, PLEASE CHECK:
 
 

















1. PREPARE DOOR AND MOUNT LOCK



   


 








 

3. APPLY EXTERIOR TRIMS

4. APPLY RAIL ASSEMBLY
 
 
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





I f �:
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












 
2. ATTACH CHASIS TO DOOR























i





5. APPLY COVER AND STRIKES






 






(2) 






 0 
6
1-2

Summary

Before Installing Device

Door Preparation and Lock Mounting

Prepare door by taping templates, drilling holes, and mortising for lock.

Attach Chassis to Door

Attach chassis to rail, position on door, mark holes, and mount chassis.

Apply Rail Assembly

Check device size, determine cut-off length, and attach rail to chassis.

Apply Cover and Strikes

Attach cover to chassis, end cap to mounting plate, and strikes to door stop.

Change Handing of Exit Device

Disassemble and Rotate Components

Remove chassis pin, slide, tube, lift lever, and pin; rotate main slide and lift lever.

Reassemble Components for Handing

Reassemble lift lever, main slide, chassis pin, and lift lever pin for new handing.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The Cal-Royal N-MR7700 Series Mortise Exit Device is a robust and versatile hardware solution designed for secure and efficient egress in commercial and institutional settings. This device is engineered to provide reliable operation and can be adapted to various door configurations and handing requirements.

Function Description:

The primary function of the N-MR7700 Series Mortise Exit Device is to facilitate quick and easy exit from a building while maintaining security from the exterior. When the push rail on the interior side of the door is depressed, it retracts the latch bolt, allowing the door to open. From the exterior, access is controlled by an exterior trim (such as an ESC lever trim) and a cylinder, which can be used to retract the latch bolt for entry. The device is designed to be surface-mounted on the door and integrates with a mortise lock, providing a secure and durable locking mechanism. Its design ensures that the door can always be opened from the inside for emergency egress, even if locked from the outside.

Important Technical Specifications:

The device is designed to accommodate a range of door sizes and configurations. For 36-inch doors, the exit device can be cut to fit doors down to 30 inches wide. For 48-inch doors, it can be cut to fit doors down to 36 inches wide. This flexibility in sizing allows for broad applicability across different door dimensions. The installation process involves precise measurements and drilling, with specific hole patterns and mortise dimensions required for the lock and chassis components. The mounting rail, which is a key structural element, needs to be cut to a specific length, determined by subtracting 1-3/4 inches (44.5mm) from the total "Y" dimension, ensuring a minimum 1/2-inch overlap with the rail and a minimum 1-3/4 inches (44.5mm) from the lower pivot. Fasteners include #12-24x1" screws for the mortise lock plate and chassis, #12-24x3/4" screws for specific components, #8 truss head machine screws for attaching the cover to the chassis, and round head screws for the mounting plate. The device is designed for flush application on the door surface.

Usage Features:

The N-MR7700 Series Mortise Exit Device offers several features that enhance its usability and adaptability:

• Handing Versatility: The device is designed to be field-reversible, allowing it to be configured for either Left Hand Reverse (LHR) or Right Hand Reverse (RHR) handing. This is a significant advantage, as it reduces the need for stocking multiple handed devices and provides flexibility during installation. The handing change process involves disassembling specific components like the chassis pin, main slide, tube, lift lever, and lift lever pin, rotating the main slide and lift lever by 180 degrees, and then reassembling them in the new configuration. This ensures that the device operates correctly regardless of the door's swing direction.
• Exterior Trim Integration: The device is compatible with exterior trims, such as the ESC lever trim, which allows for controlled entry from the outside. This integration is crucial for applications where both egress and controlled access are required.
• Robust Construction: The use of durable materials and secure fastening methods ensures the longevity and reliability of the device. Components like the chassis, mounting rail, and head cover are designed to withstand frequent use and potential abuse in high-traffic environments.
• Clear Installation Instructions: The manual provides detailed, step-by-step instructions with clear illustrations, making the installation process straightforward for trained personnel. This includes guidance on preparing the door, mounting the lock, attaching the chassis, applying the rail assembly, and securing the cover and strikes.

Maintenance Features:

While the manual does not explicitly detail maintenance procedures, the design of the N-MR7700 Series Mortise Exit Device suggests several aspects related to its upkeep:

• Modular Design: The device's modular construction, with separate components like the chassis, rail assembly, head cover, and exterior trims, simplifies potential repairs or part replacements. Should a component wear out or become damaged, it can likely be replaced without needing to replace the entire device.
• Adjustability: The ability to cut the mounting rail to size and adjust the handing indicates a degree of field-level adjustability, which can be beneficial for fine-tuning performance or adapting to minor changes in door conditions over time.
• Durable Fasteners: The use of specific screw types and lock washers for attaching strikes and other components suggests a design intended for secure and stable connections, reducing the likelihood of loosening over time. Regular inspection of these fasteners would be a standard maintenance practice.
• Surface-Mounted Components: Many components are surface-mounted, which can facilitate easier access for inspection, cleaning, and lubrication compared to fully concealed mechanisms.

In summary, the Cal-Royal N-MR7700 Series Mortise Exit Device is a highly adaptable, secure, and user-friendly solution for egress, designed with installation flexibility and long-term performance in mind.

Cal-Royal N-MR7700 Series Specifications