Installation manual for electric shear lock SD-993B-SS
This guide provides step-by-step instructions for installing the SECO-LARM SD-993B-SS electric shear lock on aluminum or steel doors. It covers mounting locations, cutting door frames, wiring for 12V or 24V power, and adjusting the armature to compensate for door gaps. The unit offers 1,500 lbs of shear holding force and includes safety notes for emergency access.
Maintenance includes cleaning contact surfaces, applying lubricant, and checking secure mounting of components. Troubleshooting tips address common issues like poor attraction or failure to lock, with solutions including adjusting gaps or replacing the unit.
| Holding Force | 1,500 lbs (680 kg) |
|---|---|
| Power | 420mA @ 12VDC, 210mA @ 24VDC |
| Max Door Gap | 1/16” (2mm) |
| Magnet Housing Dimensions | 7 1/8” x 13/16” x 11/16” (180 x 30 x 27 mm) |
| Armature Assembly Dimensions | 7 1/8” x 13/16” x 15/8” (180 x 30 x 42 mm) |
The maximum door gap is 1/16” (2mm).
Use the included hex wrench to adjust the nickel-plated portion of the armature assembly to make the gap as small as possible without interfering with door operation.
The unit supports 12VDC (420mA) and 24VDC (210mA) power supplies.