This document outlines the installation and adjustment procedures for the dormakaba RTS Series Package 26, a concealed door closer system designed for aluminum doors and frames with pivots. The system incorporates a slotted angle bracket and an offset slide arm.
Function Description:
The RTS Series Package 26 is a concealed overhead door closer system that provides controlled closing of doors. It is designed to be integrated into the door frame and the top of the door, offering a clean and unobtrusive appearance. The system utilizes a hydraulic mechanism to control the door's closing speed and can be adjusted to suit specific requirements. The "Package 26" designation, combined with the "slotted angle bracket" and "offset slide arm aluminum door and frame - pivots" description, indicates a specific configuration tailored for particular door and frame types, likely focusing on applications where the closer needs to be hidden within the header and the door's top rail. The offset slide arm is crucial for ensuring proper operation and alignment with the door's pivot point, especially in applications where the door's pivot is not directly in line with the closer's spindle.
Important Technical Specifications:
The manual provides detailed instructions for preparing the header, side jamb, and top of the door according to a template, implying precise measurements and clearances are critical for proper installation.
- Mounting Hardware: The system uses various machine screws for secure installation:
- No. 8-32 pan head machine screws for fastening the mounting bracket to the side jamb and the cover plate to the mounting bracket.
- No. 10-32 flat head machine screws for fastening the header to the mounting bracket, securing the track to the door, and installing the optional applied stop.
- Hex head machine screws with flat washers for fastening the angle bracket to the closer.
- Fillister head machine screws for installing the closer into the mounting tabs.
- 1/4-20 socket head cap screw for securing the slide arm onto the spindle.
- Button head machine screw for securing the shock spring assembly to the track.
- Shock Spring Settings: The shock spring assembly can be set for 90° or 105° deadstop, indicating the maximum opening angle before the shock spring engages to prevent damage. This setting is crucial for protecting the door and frame from excessive force when opening.
- Applied Stop (Optional 8511): The optional 8511 applied stop has specific dimensions:
- Overall length: 35" [889 mm]
- Cutout in stop: 14-1/4" [362 mm]
- Mounting holes: For 10-32 machine screws, requiring a No. 21 drill and tap. One hole in the cover plate, two holes in the frame.
- Clearance: 1/8" [3 mm] from the side view.
Usage Features:
- Concealed Design: The primary usage feature is its concealed nature, making it ideal for architectural applications where aesthetics are paramount. The closer body is hidden within the header, and the slide arm and track are integrated into the top of the door, providing a clean look.
- Adjustable Closing Speeds: The closer features two adjustment valves, "Valve A" and "Valve B," allowing for precise control over the door's closing cycle:
- Valve A: Controls the closing speed from the maximum opening angle down to 0°. Turning clockwise decreases the speed, while counter-clockwise increases it. This valve is critical for setting the main closing speed of the door.
- Valve B: Controls the closing speed from the maximum opening angle down to 20°. Turning clockwise decreases the speed, while counter-clockwise increases it. This valve allows for a separate, often slower, latching speed to ensure the door closes completely and latches securely without slamming.
- Shock Spring Functionality: The integrated shock spring protects the door and frame by absorbing excess energy when the door is opened forcefully, preventing damage at the maximum opening angle. The ability to set the deadstop at 90° or 105° offers flexibility based on the door's specific requirements and surrounding structures.
- Offset Slide Arm: The offset slide arm design is specifically intended for applications where the door's pivot point is not directly aligned with the closer's spindle. This ensures smooth and consistent operation, accommodating various door configurations.
- Optional Applied Stop: The optional 8511 applied stop provides a positive stop for the door, preventing it from opening beyond a desired point. This feature enhances safety and prevents damage to adjacent walls or objects.
Maintenance Features:
While the manual does not explicitly detail ongoing maintenance, the design implies certain aspects:
- Durable Construction: The use of aluminum for the door and frame, combined with robust machine screws and brackets, suggests a durable system designed for long-term use in commercial or high-traffic environments.
- Adjustability for Longevity: The adjustable closing speeds (Valve A and Valve B) are not only usage features but also contribute to maintenance by allowing the closer to be fine-tuned over time to compensate for wear, environmental changes, or changes in door usage. This helps maintain optimal performance and extends the life of the door and closer components.
- Concealed Protection: Being concealed within the header, the closer mechanism is protected from external damage, dust, and tampering, which can reduce the need for frequent repairs or cleaning.
- Secure Fastening: The detailed instructions for securely fastening all components with various machine screws ensure a stable installation that is less prone to loosening or failure over time, minimizing the need for re-tightening or repairs. The instruction "TIGHTEN SECURELY!" for the slide block pin emphasizes the importance of initial proper installation for long-term reliability.
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