The Cal-Royal N900 Series Door Closer with Spring Cush Arm is a robust and versatile door closer designed for a wide range of door applications, offering both non-hold-open and hold-open functionalities. This device, available in models 900SPRING (non-hold-open) and 900HOSPRING (hold-open), is engineered to meet entrance accessibility requirements and provide reliable door control.
Function Description:
The primary function of the N900 Series door closer is to control the closing speed of a door, ensuring it closes smoothly and securely without slamming. It incorporates a Super Rigid Parallel Arm design, which is essential for its proper operation. The spring cush arm feature is designed to slow the door down by 5 degrees (5°) ahead of its normal dead stop point, providing an added layer of control and preventing abrupt stops. It's important to note that despite the installation of the spring cush, the backcheck setting of the door closer should not be adjusted.
The closer is non-handed, meaning it can be installed on either right-hand or left-hand doors, simplifying inventory and installation. It features adjustable spring power, allowing customization for various door widths and weights. The backcheck function is a standard feature, preventing the arm from striking the door stop with impact during opening. For hold-open models (HOSPRING/900), a quarter turn on the hold-open control handle engages or disengages the hold-open function, allowing the door to remain open at a desired position.
Important Technical Specifications:
- Models: 900SPRING (Non Hold-Open) and 900HOSPRING (Hold-Open).
- Door Width Compatibility: Adjustable for exterior/interior doors up to 58 inches (1470mm) wide.
- Door Weight Compatibility: Suitable for doors weighing up to 330 lbs (150 kg).
- Arm Type: Super Rigid Parallel Arm mounting (Push Side).
- Handing: Non-handed for right or left-hand doors.
- Spring Cush Feature: Slows door down by 5 degrees (5°) before the dead stop.
- Maximum Door Open Angle (for Parallel Arm): 100 degrees.
- Adjustments:
- Spring Power: Adjustable to match door width or weight. Increasing force: turn spring adjusting nut clockwise. Decreasing force: turn spring adjusting nut anticlockwise. Maximum adjustment is approximately 10 turns; do not forcibly extend beyond limits.
- Closing Speed: Controlled by adjusting the "C" (closing speed) valve. Turning clockwise for slow speed, anti-clockwise for fast.
- Latching Speed: Controlled in the same manner as closing speed adjustment.
- Backcheck Intensity: Adjustable. Clockwise to increase intensity, counterclockwise to decrease. This valve should never be closed completely.
- Dimensions (Parallel Arm Mounting - Push Side):
- Bracket to door edge: 4-7/8" (124mm)
- Door stop to bracket: 8-1/4" (209.5mm)
- Closer body length: 11-1/8" (282.5mm)
- Closer body width: 3-3/8" (85.5mm)
- Arm projection from door edge: 2-7/8" (72.6mm)
- Tools Required for Installation: 5/16" or 8mm hexagonal wrench (supplied), 13/32" or 10mm wrench (for shaft screw).
Usage Features:
- Accessibility Compliance: Designed to meet entrance accessibility requirements.
- Versatile Installation: Can be mounted on the push side of the door, with specific instructions for both left-hand and right-hand doors.
- Adjustable Power: Allows for fine-tuning to suit different door sizes and weights, ensuring optimal performance and user comfort. The factory setting is typically for a Size 3 closer, with adjustments possible to achieve sizes from 1/2 to 6.
- Controlled Closing: The combination of closing speed, latching speed, and backcheck ensures a controlled and safe door operation, preventing damage to the door or frame and reducing the risk of injury.
- Hold-Open Functionality (HOSPRING/900): Provides convenience by allowing the door to be held open at a specific angle when needed, ideal for high-traffic areas or moving items.
- Spring Cush Arm: Offers a gentle deceleration at the end of the closing cycle, enhancing safety and reducing wear and tear on the door and frame.
Maintenance Features:
- Durable Construction: Built with robust materials to ensure long-term reliability and performance.
- Adjustable Components: All critical settings (spring power, closing speed, latching speed, backcheck) are adjustable, allowing for easy recalibration over time to maintain optimal performance as door conditions or user preferences change.
- Clear Installation Instructions: The manual provides detailed, step-by-step instructions for installation and adjustment, facilitating proper setup and minimizing errors.
- "L" Support for Narrow Frames: An optional "L" support bracket is available for installations where the door frame or door stop is not wide enough to fully support the main bracket, enhancing installation flexibility and stability. This support requires drilling and tapping into the bracket.
- Cover for Aesthetics and Protection: A cover is provided to conceal the internal mechanisms, offering a clean aesthetic and protecting components from dust and damage.
- Important Remark on Regulation: The manual emphasizes the importance of proper regulation to prevent the door from slamming, recommending a normal standard closing time of 5 to 7 seconds from a 90° open position, evenly divided between main closing (sweep) speed and latching speed. This guidance helps users maintain the closer's longevity and safety.
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