The Dorma BTS 80 floor spring system is a versatile and robust solution for door closure and control, designed for both single and double-leaf doors. With a maximum door weight capacity of 300 kg, the system offers concealed installation, making it ideal for applications where aesthetics and space constraints are important. The BTS 80 series includes three distinct variants—BTS 80 F, BTS 80 EMB, and BTS 80 FLB—each tailored to specific operational and safety requirements. This article provides a detailed exploration of the installation process, technical specifications, and functional capabilities of the BTS 80 system, based on the available documentation.
The BTS 80 F is designed for fire-rated doors, ensuring compliance with fire safety standards. The BTS 80 EMB features an electro-hydraulic hold-open function, allowing doors to remain open under controlled electrical input. The BTS 80 FLB includes a fail-safe mechanism, enabling the door to open in case of power failure. These models differ in their installation requirements and operational logic, necessitating careful selection based on the specific application.
Installation of the BTS 80 system involves several key steps, including preparation of the door and floor, alignment of the spring mechanism, and adjustment of closing and latching forces. The system supports a range of accessories to enhance its functionality, such as maintained control switches and fail-safe relays. This article outlines these procedures in detail, drawing from the manufacturer's technical documentation to ensure accuracy and reliability.
Key Features of the BTS 80 Floor Spring System
The Dorma BTS 80 floor spring system is engineered to provide reliable door closure and controlled movement, with a design that accommodates a variety of door types and operational needs. The system supports doors with a maximum weight of 300 kg and is suitable for both single and double-leaf configurations. This versatility makes it appropriate for commercial, institutional, and industrial settings where heavy doors are common.
One of the system’s primary advantages is its concealed installation method. Unlike traditional floor springs that require visible mechanisms on the door frame, the BTS 80 is embedded within the floor, preserving the architectural integrity of the space. This is particularly beneficial in environments where aesthetics are a priority, such as office buildings, schools, and public facilities.
The system also includes adjustable closing and latching forces, allowing for fine-tuning to accommodate different door weights and user preferences. The closing force adjustment ensures the door closes smoothly without slamming, while the latching force adjustment controls how securely the door remains in the closed position. These features contribute to the system’s adaptability across a range of applications.
The BTS 80 system further supports additional functional capabilities through its variants. The EMB model includes an electro-hydraulic hold-open function, enabling the door to remain open when activated by an electrical signal. This is particularly useful in high-traffic areas where free passage is required. The FLB model offers a fail-safe function, ensuring the door can be opened in the event of a power outage, which is critical for emergency egress scenarios.
BTS 80 Installation Procedure
The installation of the Dorma BTS 80 floor spring system requires careful planning and adherence to manufacturer specifications to ensure proper functionality and longevity. The process involves several stages, beginning with the preparation of the door and floor, followed by the alignment and mounting of the spring mechanism, and concluding with adjustment and testing of the system.
The first step is to prepare the door and floor for installation. This includes measuring the door thickness and determining the required cutout for the floor spring. The manufacturer’s technical documentation specifies the necessary dimensions for different door configurations, ensuring compatibility with the selected model. Once the cutout is prepared, the floor spring baseplate is installed, ensuring it is level and aligned with the door’s pivot point.
Next, the floor spring mechanism is inserted into the cutout and secured using the provided mounting hardware. The spring must be aligned with the door’s center of gravity to ensure balanced operation. This step is critical, as misalignment can lead to uneven door movement and increased wear on the system. The manufacturer recommends using a spirit level to verify the alignment before proceeding.
After the floor spring is in place, the closing and latching forces are adjusted to match the door’s weight and user requirements. The manufacturer’s documentation provides detailed instructions for adjusting these forces, including the use of calibration tools and reference points. These adjustments are typically made using the system’s built-in adjustment mechanisms, which allow for precise control over the closing and latching actions.
Once the adjustments are complete, the system is tested to ensure smooth and controlled door movement. This includes opening and closing the door multiple times to observe its behavior and make any necessary fine-tuning. The manufacturer also recommends checking for any signs of misalignment or mechanical resistance during this phase.
BTS 80 EMB: Electro-Hydraulic Hold-Open Function
The BTS 80 EMB model is specifically designed for applications where controlled access and high-traffic flow are essential. This variant includes an electro-hydraulic hold-open function, which allows the door to remain open when activated by an electrical signal. This feature is particularly useful in environments such as classrooms, conference centers, and office buildings, where maintaining an open door is necessary during certain hours or events.
The hold-open function is controlled through a maintained control switch, which is connected to the door closer’s electrical system. When the switch is activated, the closer is powered to maintain the door in the open position. When the switch is deactivated, the closer returns to its standard operation, allowing the door to close automatically. This functionality can be used to manage access during setup periods or to facilitate smooth transitions between events in shared spaces.
In addition to its use in general access control, the BTS 80 EMB is also suitable for fire/life safety applications. In these scenarios, the hold-open function is controlled by a fire alarm system, ensuring that doors remain open under normal conditions but automatically close when a fire alarm is triggered. This provides an effective means of maintaining open pathways during emergencies while ensuring compliance with safety regulations.
The electro-hydraulic mechanism of the EMB model ensures smooth and reliable operation, even under continuous use. The system is designed to withstand repeated activation and deactivation cycles without compromising performance or longevity. This makes it an ideal choice for environments where frequent door usage is expected.
BTS 80 FLB: Fail-Safe Function for Emergency Egress
The BTS 80 FLB model is designed for applications where emergency egress and life safety are critical considerations. This variant includes a fail-safe function that allows the door to open automatically in the event of a power failure. This is particularly important in settings such as hospitals, schools, and public buildings, where ensuring safe and unobstructed exit routes is essential.
The fail-safe function is activated through an integrated relay system that is connected to the building’s electrical supply. Under normal operating conditions, the door functions like a standard floor spring system, closing automatically after being opened. However, in the event of a power outage, the relay triggers the door to open and remain in the open position until power is restored. This ensures that occupants can evacuate the building without encountering locked or jammed doors during an emergency.
The FLB model is also compatible with fire alarm systems, allowing for integration with building-wide safety protocols. When a fire alarm is activated, the door can be programmed to open immediately, facilitating rapid evacuation. This feature is particularly valuable in large facilities where multiple exit points need to be accessible during emergencies.
The fail-safe function is designed to operate reliably even in the absence of regular power supply. The system includes a backup mechanism that ensures the door can be opened manually if needed, providing an additional layer of safety. This dual-mode operation—automatic and manual—ensures that the system remains functional under a wide range of conditions.
BTS 80 F: Fire-Rated Door Compatibility
The BTS 80 F model is specifically engineered for use with fire-rated doors, ensuring compliance with fire safety standards and regulations. This variant is designed to maintain the door’s integrity in the event of a fire, preventing the spread of flames and smoke while allowing for controlled closure. The system is tested and certified to meet the required fire resistance ratings, making it suitable for use in buildings with fire safety requirements.
The fire-rated functionality of the BTS 80 F is achieved through its construction and materials, which are designed to withstand high temperatures and prevent heat transfer. The system includes a latching mechanism that ensures the door remains securely closed when activated, preventing accidental opening during a fire. This is particularly important in high-risk environments such as industrial facilities, laboratories, and commercial buildings.
The BTS 80 F is compatible with a range of fire-rated door types and is designed to be installed in concealed configurations, preserving the aesthetic appeal of the building. The system supports both single and double-leaf doors, allowing for flexibility in architectural design. The manufacturer’s technical documentation provides detailed specifications for installation, ensuring that the system meets all fire safety requirements.
Accessories and Additional Configurations
The Dorma BTS 80 floor spring system supports a range of accessories that enhance its functionality and adaptability to different applications. These accessories include maintained control switches, fail-safe relays, and adjustment tools, which allow for fine-tuning of the system’s performance.
Maintained control switches are commonly used with the EMB model to control the hold-open function. These switches are connected to the door closer’s electrical system and allow for manual activation and deactivation of the hold-open feature. They are particularly useful in environments where controlled access is required, such as meeting rooms, offices, and classrooms.
Fail-safe relays are used with the FLB model to enable the automatic opening of the door in the event of a power failure. These relays are integrated into the door closer’s electrical system and are designed to trigger the door to open when the power supply is interrupted. This ensures that the door remains accessible during emergencies, even when the building’s electrical system is not functioning.
Adjustment tools are provided to fine-tune the closing and latching forces of the system. These tools allow for precise calibration of the system, ensuring that the door closes smoothly and securely. The manufacturer’s documentation provides detailed instructions for using these tools, ensuring that the system is properly adjusted for optimal performance.
Maintenance and Troubleshooting
To ensure the longevity and reliability of the Dorma BTS 80 floor spring system, regular maintenance and inspection are recommended. The manufacturer’s technical documentation outlines best practices for maintaining the system, including cleaning, lubrication, and inspection of key components.
Periodic cleaning of the system is necessary to remove dust, debris, and other contaminants that can affect its performance. The manufacturer recommends using a soft cloth and mild detergent to clean the visible components of the system, ensuring that no abrasive materials are used. This helps to prevent damage to the finish and internal mechanisms.
Lubrication of the moving parts is also an important aspect of maintenance. The manufacturer provides specifications for the type of lubricant that should be used, ensuring that it is compatible with the system’s materials and does not cause any adverse effects. Lubrication should be applied sparingly to avoid excess buildup, which can attract dirt and reduce the system’s effectiveness.
In addition to routine maintenance, troubleshooting is an important aspect of ensuring the system functions correctly. Common issues that may arise include misalignment, uneven door movement, and failure to close properly. The manufacturer’s documentation provides detailed guidance on identifying and resolving these issues, including step-by-step procedures for adjusting the system and inspecting key components.
If the system exhibits unusual behavior, such as resistance when opening or closing the door, it is recommended to consult the manufacturer’s technical support for further assistance. The manufacturer also provides detailed technical documentation and support services to help users resolve any issues they may encounter.
Conclusion
The Dorma BTS 80 floor spring system is a versatile and reliable solution for door closure and control, offering a range of models and accessories to suit different applications. With a maximum door weight capacity of 300 kg, the system is suitable for both single and double-leaf doors, making it ideal for commercial, institutional, and industrial environments. The concealed installation method ensures that the system does not interfere with the architectural design of the space, preserving its aesthetic appeal.
The system includes three main variants—the BTS 80 F for fire-rated doors, the BTS 80 EMB with electro-hydraulic hold-open function, and the BTS 80 FLB with fail-safe function—each designed to meet specific operational and safety requirements. These models differ in their installation procedures and functional capabilities, requiring careful selection based on the intended use.
Installation of the BTS 80 system involves several key steps, including preparation of the door and floor, alignment of the spring mechanism, and adjustment of closing and latching forces. The manufacturer’s technical documentation provides detailed instructions for each step, ensuring that the system is installed correctly and functions as intended.
The system also supports a range of accessories, such as maintained control switches and fail-safe relays, which enhance its functionality and adaptability to different applications. Regular maintenance and troubleshooting are recommended to ensure the system remains in optimal condition and continues to perform reliably over time.
By following the manufacturer’s guidelines and best practices, users can ensure that the Dorma BTS 80 floor spring system provides effective and long-lasting performance, meeting the needs of a wide range of applications.