Schlage L400 Lock with Indicator Installation Instructions

Table of Contents

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Start Installation

1. Double-check the door preparation.

Check the door preparation dimensions with the template included in the package. Complete drilling, if necessary.

Diagram Description: A detailed diagram of door preparation. It shows dimensions for door thickness, backset (2-3/4" and 2-3/8"), edge bevel, and hole placement for various lock configurations: OS single indicator, IS single indicator, and dual indicator. It also includes a specific diagram for a left-handed door.

2. Install lock chassis.

Fully tighten chassis mounting screws.

Diagram Description: Shows the lock chassis being installed into the prepared door opening. Mounting screws are depicted being tightened to secure the chassis.

Trim Installation

Follow instructions to install both the inside and outside trims.

Cylinder

1. Install non-indicator cylinder.

1a. Insert key halfway into the cylinder, and install the cylinder with ring and cylinder spring as shown.

Diagram Description: Illustrates the non-indicator cylinder with a key inserted halfway, along with the cylinder ring and spring, being correctly installed into the lock chassis.

1b. Rotate cylinder clockwise.

Diagram Description: Shows the cylinder being rotated clockwise. A note emphasizes ensuring the tabs are flush with the chassis.

1c. Proceed with the appropriate steps to install trim on the opposite side. If both trims are installed, proceed to page 4 to complete installation.

Cylinder Indicator

1. Install indicator module.

1a. Rotate the indicator module spindle until the sign moves down and uncovers the arrow markings. Do not use tools on spindle!

Diagram Description: Depicts the indicator module spindle being rotated. The rotation causes the status sign (e.g., 'UNLOCKED') to move down, revealing arrow markings underneath.

1b. Place the indicator module against the door.

1c. Insert key halfway into the cylinder, and install the cylinder with cylinder spring as shown.

Diagram Description: Shows the cylinder being inserted into the indicator module assembly, with the cylinder spring in place.

Note: Cylinder must be flush with sectional trim.

Diagram Description: Illustrates the cylinder being flush with the sectional trim.

2. Install mounting screw with flange.

Before fully tightening the screw, use a level to align the module assembly so that it is parallel with the door edge.

DO NOT drill the door hole through the module opening!

Note: If not pre-drilled, mark the top hole of the indicator module, remove the module, and drill a 5/32" hole. Follow steps 1a to 1c to reinstall.

Diagram Description: Shows the mounting screw with flange being installed. A level is used to ensure the assembly is parallel to the door edge. The note about pre-drilling is visually represented.

3. Install sectional trim.

3a. Remove the key cylinder.

3b. Mount the sectional trim. Line up pins on the bottom of the indicator module with holes on the sectional trim, then pivot trim until flush with the door.

Diagram Description: Illustrates mounting the sectional trim by aligning pins and pivoting it into place until it is flush with the door.

3c. Insert key halfway into the cylinder, and install the cylinder with cylinder spring as shown.

Note: Cylinder must be flush with sectional trim.

Diagram Description: Shows the cylinder being inserted into the assembly, with the spring. A note highlights the requirement for the cylinder to be flush.

3d. Proceed with the appropriate steps to install trim on the opposite side. If both trims are installed, proceed to page 4 to complete installation.

Thumb turn

1. Install non-indicator thumb turn.

1a. If not pre-drilled, use the provided door template to mark and drill two (2) pilot holes.

Diagram Description: Shows the use of a door template to mark pilot holes for the thumb turn installation.

1b. Install the thumb turn.

Diagram Description: Depicts the thumb turn being installed and rotated 90 degrees.

1c. Proceed with the appropriate steps to install trim on the opposite side. If both trims are installed, proceed to page 4 to complete installation.

Thumb turn Indicator

1. Install indicator module.

1a. Rotate the indicator module spindle until the sign moves down and uncovers the arrow markings. Do not use tools on spindle!

Diagram Description: Shows the indicator module spindle being rotated to reveal the arrow markings.

1b. Place the indicator module against the door.

1c. Install the alignment cylinder with cylinder spring as shown. Use any slotted screwdriver, lever wrench, or coin to rotate the cylinder.

Diagram Description: Illustrates installing the alignment cylinder with spring and using a tool to rotate it.

Note: Alignment cylinder face needs to be flush with indicator module.

Note: The slot in the alignment cylinder must be vertical after installing the alignment cylinder.

Diagram Description: Shows using a level or armor plate to ensure the cylinder face is flush with the indicator module. Another note indicates the vertical orientation of the alignment cylinder slot.

2. Install mounting screw with flange.

Before fully tightening the screw, use a level to align the module assembly so that it is parallel with the door edge.

DO NOT drill the door hole through the module opening!

Note: If not pre-drilled, mark the top hole of the indicator module, remove the module, and drill a 5/32" hole. Follow steps 1a to 1c to reinstall.

3. Install sectional trim.

3a. Mount the sectional trim. Line up pins on the bottom of the indicator module with holes on the sectional trim, then pivot trim until flush with the door.

Diagram Description: Shows mounting the sectional trim by aligning pins and pivoting it until flush with the door. The trim is shown oriented with the thumb turn vertical.

3b. Proceed with the appropriate steps to install trim on the opposite side. If both trims are installed, proceed to page 4 to complete installation.

Finish Installation

Make sure both the inside and outside trims are fully installed before continuing to the following steps.

1. Secure sectional indicator trim.

Turn the pre-installed screw clockwise using a 1/16" Allen key until the sectional trim is held firmly. If both the inside and outside trims are indicator trims, remember to tighten the screw on both trims.

Diagram Description: Shows tightening the sectional indicator trim screw with a 1/16" Allen key.

2. Tighten cylinder retaining screw with screwdriver.

Only for trims with cylinder.

Diagram Description: Shows a screwdriver being used to tighten the cylinder retaining screw.

3. Install armor front.

Diagram Description: Depicts the armor front being installed onto the lock mechanism.