Installation Guide for SDC 1091AI and 1091AIDL Fail-Safe Concealed Mortise Bolt Lock

Quick Guide for Installation

The SDC 1091AI and 1091AIDL are fail-safe concealed mortise bolt locks designed for metal doors and frames. Installation involves mortising a cutout in the door or frame, attaching the wiring, and securing the lock with two mounting tabs. The system includes an Auto Relock Switch (ARS) and requires a PR-1000 Power Regulator for frame-mounted applications to manage heat and power consumption.

Installation Instructions

Overhead Installation (Horizontal):

• Examine the top rail of the door for the strike plate location. Mark the door and the header to align the strike plate and lock.
• Locate the center line of the door thickness on the header. Attach the adhesive cutout template.
• Center punch the tab-mounting screw locations and counter-sink for #10 screws. Saw or rout out the cutout area.

Sidejamb Installation (Vertical):

• Examine the lock stile jamb for the point nearest the center of the door height.
• Mark the door stile horizontal for the top end of the strike plate and make a corresponding mark on the jamb.
• Attach the adhesive cutout template to the jamb, aligning the top of the cutout with the horizontal mark.
• Center punch the tab mounting screw locations, counter-sink for #10 screws, and saw or rout the cutout.

Finalizing Installation:

• Attach mounting tabs inside the cutout.
• Connect power supply leads to the lock leads. Do not hang the lock by the wire leads.
• Insert the lock into the cutout. When installed horizontally, the bolt end must be nearest the lock stile. When installed vertically, the bolt must be at the top end of the cutout. Secure with #10-32 machine screws.
• Use the strike plate as a template to mark and drill screw holes. Mortise as required and attach the strike.

Auto Relock Switch (ARS) Adjustment

The ARS is factory-set for a 1/8" clearance between the top of the door and the transom bar or head jamb. If there is an additional gap, compensate by loosening the lock nut and turning the switch assembly clockwise until the adjustment is satisfactory. Ensure the lock nut is tightened after adjustment.

Wiring and Power Configuration

The SDC PR-1000 Power Regulator is included and recommended for use to reduce power consumption and heat, extending the life of the solenoid. The lock supports dual voltage (12VDC or 24VDC).

• 12VDC Configuration: 0.9 Amp (Max) Continuous Duty.
• 24VDC Configuration: 0.45 Amp (Max) Continuous Duty.
• Wiring: Follow the provided diagrams for connections with or without the PR-1000 regulator. Ensure correct polarity for the solenoid and sensors (BPS/DPS).

Troubleshooting

• Bolt does not project: Check voltage and alignment of the strike.
• Bolt projects but chatters: Voltage is too low.
• Bolt will not retract: Strike is mis-aligned.

Technical Data

• Face Plate: 8" x 1-1/2" x 1/8"
• Strike: 4" x 1-1/2" x 1/8"
• Bolt: 5/8" diameter solid stainless steel
• Bolt Throw: 3/4"
• PR-1000 Module: 3-3/4" x 1-1/4" x 1/2" (Required when mounted in frame)