Crawford Automatic 300 Se Manual Extra Quality

The "Crawford Automatic 300 SE" (often associated with high-speed door systems rather than watches) is a robust, industrial-grade solution designed for high-traffic environments. If you are reviewing this for a facility, Key Performance Features

High-Speed Operation: Reaches opening/closing speeds of approximately 0.8 m/s, significantly reducing air infiltration and energy loss.

Safety Linear Encoder (SLE): A patented electronic safety device that automatically reverses the door if it detects an obstacle during closing. crawford automatic 300 se manual extra quality

Self-Repairing Curtain: Designed with a flexible, non-tear polyester curtain that can re-insert itself into the tracks if it is knocked out by a collision.

Heavy Duty Motor: Powered by a 400 V 3-phase gear motor built for high-cycle industrial use. Technical Specifications Wind Resistance Typically rated for high wind loads (varies by model size). Material The "Crawford Automatic 300 SE" (often associated with

Hot-galvanised steel frame with a 900 gr/m² polyester curtain. Control

Complete white push-button panel with IP55 grade photocells for safety. Compliance Step B: The Automatic Rest Mechanism This is

Meets international standards like EN 12604 and EN 12453 for safety.

💡 Pro Tip: For maximum longevity, ASSA ABLOY (the current owner of Crawford) recommends regular maintenance through their service agreements to ensure the electronic sensors and motor remain in peak condition. Crawford | Overhead sectional doors | Our heritage

Step B: The Automatic Rest Mechanism

This is the heart of the 300SE. Unlike a standard flipper rest, this system uses a magnetic lever.

1. Positioning: The rest is built into the riser window. Ensure the magnetic arm moves freely without friction against the riser body.
2. Spring Tension: Locate the micro-adjustment screw on the side of the riser window.
   • For Carbon Arrows: Lower tension (arm moves faster).
   • For Aluminum Arrows: Higher tension (slower drop to support weight).
3. Center Shot: Use the lateral adjustment to align the string visually down the center of the arrow shaft. The 300SE usually requires the arrow to sit slightly outside center (1/16th inch) to clear the riser upon release.

3. Tuning the Automatic System

To achieve "Extra Quality" performance, you must tune the rebound delay.

5. Exclusive Bonus Content (Extra Quality Only)

• Factory Handwritten Notes: Scanned archival pages from original Crawford engineers.
• Maintenance Log Template: Printable grid to track service history for your specific 300 SE.
• Quick Reference Card: 8.5"x11" laminated sheet with critical torque values, oil types, and backlash specs.
• Video Access: QR codes throughout linking to proprietary assembly animations (for digital version).

6. Usability & Durability Upgrades

• Tear-Resistant Pages: Treated with light polymer coating for workshop handling.
• Spiral-Bound Option: Allows folding back to a single page for bench work.
• Tabbed Section Dividers: Pre-indexed for Assembly, Disassembly, Parts, Electrical (if applicable), and Calibration.
• Magnetic Clasp Case: Protective hard shell case with magnet closure and foam insert.