SDC 1561S Surface Electromagnetic Shear Lock Installation Manual

Important Information

The SDC 1561S HiSHEAR Surface Magnetic Lock is designed for right-hand-reverse or left-hand-reverse doors. It provides a maximum holding force of 2000 lbs. Proper alignment is critical for this device; it is less forgiving than standard electric bolt locks. Ensure all door latching problems are corrected before installation.

Installation Preparation

Before beginning the installation, ensure the following conditions are met:

• The clearance between the door top and frame header must be 1/8 inch.
• Adjust the door and door closer so the door settles immediately and is fully closed at rest.
• For double-acting doors, ensure they are fully closed and at rest in the dead center of the frame.
• Verify that the labels on the L-brackets of the Magnet Lock and Armature are facing the leading edge of the door.

Mounting the Magnet Assembly

The magnet assembly is mounted to the frame header. Follow these steps:

1. Prep the frame header according to the dimensions provided in the manual for your specific door handing (Right-Hand-Reverse or Left-Hand-Reverse).
2. Mount the Magnet Assembly to the frame header using the provided threaded inserts and mounting bolts.

Mounting the Armature Assembly

The armature is mounted to the door. Follow these steps:

1. Prep the door according to the dimensions provided in the manual.
2. If installing on a left-hand-reverse door, remove the armature from its housing, rotate it 180 degrees, and reinstall it in the housing. The brass screw on top of the armature must face the leading edge of the door.
3. Mount the Armature Assembly to the door using the provided sex bolts and mounting bolts.
4. Ensure there is a 1/8 inch minimum gap between the armature and the magnet face.

Wiring and Timer Adjustment

The unit features an integrated auto relock delay timer, adjustable from 1 to 6 seconds (factory set to approximately 3 seconds).

• Wiring: Connect to a properly fused 12VDC or 24VDC power source with the power off.
• Timer Adjustment: Use a small flat-blade screwdriver through the small hole in the face of the magnet. Turn clockwise to increase the time and counter-clockwise to decrease the time.

Troubleshooting and Alignment

If positive locking cannot be attained due to misalignment, refer to the shear tab installation diagrams. The armature shear stops should be centered between each pair of magnet lock shear stops. If the clearance between the shear stops is sufficient, open and close the door several times to verify positive locking.

Maintenance

The electromagnet and armature surfaces must be kept clean. Any damage such as paint, burrs, dirt, or rust can reduce holding power.

• Do not touch the lock face with your hands.
• Clean the lock face using a soft, clean, dry cloth or an abrasive cloth like Scotch-Brite by 3M. Do not use sandpaper.
• Apply a rust inhibitor (such as Starret M1 or LPS3) to the lock face and armature face if the plating becomes damaged.