This manual provides essential information for installing, adjusting, and maintaining the Fisher 667 actuator, covering sizes 80 and 100. It outlines safety precautions, technical specifications, and proper usage to ensure optimal performance and safety.
1.1 Scope of the Manual
This manual provides detailed instructions for the installation, adjustment, maintenance, and parts ordering of the Fisher 667 actuator in sizes 80 and 100. It serves as a comprehensive guide for understanding the actuator’s operation, safety precautions, and technical specifications. The manual is designed for trained personnel and emphasizes proper procedures to ensure safe and effective use of the actuator in various industrial applications.
1.2 Description of the Fisher 667 Actuator
The Fisher 667 actuator is a reverse-acting, spring-opposed diaphragm actuator designed for automatic control valve operation. It responds to pneumatic pressure changes, positioning the valve plug accordingly. Available in sizes 80 and 100, it features optional configurations like top-mounted or side-mounted handwheels. The actuator’s robust design ensures reliable performance in industrial applications, with safety features and maintenance options detailed throughout this manual.
Specifications and Main Features
The Fisher 667 actuator offers precise control, durability, and versatility, with key features including reverse-acting operation, spring opposition, and optional handwheel configurations for enhanced functionality and safety.
2.1 Technical Specifications
The Fisher 667 actuator features reverse-acting, spring-opposed diaphragm technology, with maximum casing pressures ranging from 4.1 to 7.9 bar, depending on construction. Standard cast iron models have lower limits, while all-steel versions support higher pressures. Pressure connections are 1/4 NPT internal, and approximate weights range from 14,150 to 45,000 pounds without handwheels. The actuator is designed for precise control, offering durability and reliability in various industrial applications, with specifications tailored to ensure optimal performance and safety across different operating conditions.
2.2 Main Features of the Fisher 667 Actuator
The Fisher 667 actuator is a reverse-acting, spring-opposed diaphragm actuator designed for precise control of valves. It offers optional top-mounted or side-mounted handwheels for manual operation and features a top-loading capability for additional pressure application. The actuator provides reliable performance, automatic operation, and adaptability to various valve applications. Its robust construction ensures durability, while its design allows for easy maintenance and adjustments, making it suitable for diverse industrial environments requiring efficient and consistent control valve operation.
Installation
Mount the actuator on the valve bonnet, secure with cap screws, and connect the air supply. Ensure proper stem engagement and alignment for safe and effective operation.
3.1 Actuator Mounting Procedures
Mount the actuator on the valve bonnet by inserting cap screws and tightening hex nuts securely. Align the actuator stem with the valve stem, ensuring proper engagement. Connect the air supply to the lower diaphragm casing. For push-down-to-close valves, ensure the valve plug is seated before extending the actuator stem. For push-down-to-open valves, apply pressure to retract the stem fully. Clamp stems evenly in the stem connector, avoiding stripped threads. Tighten cap screws and align the travel indicator for accurate valve position monitoring. Always follow safety guidelines to prevent damage or injury.
3;2 Loading Connection
Connect the air supply to the lower diaphragm casing connection (1/4 NPT internal). For push-down-to-close valves, ensure the valve plug is seated before extending the actuator stem. For push-down-to-open valves, apply pressure to fully retract the stem. Use pressure-limiting devices to avoid exceeding maximum pressure limits (refer to table 2). Ensure proper alignment and secure connections to prevent air leaks. Always follow safety guidelines to avoid damage or injury during the loading process. Proper loading ensures precise valve operation and longevity of the actuator. Avoid overloading to maintain optimal performance.
Safety Precautions
Always wear protective gear and follow safety guidelines. Avoid exceeding pressure limits (refer to table 2) to prevent damage or injury. Ensure proper training before handling the actuator.
4.1 General Safety Warnings
Always read and understand this manual before installing, operating, or maintaining the Fisher 667 actuator. Wear protective gear, including gloves and eyewear, to avoid injury. Ensure proper training in valve and actuator operation to prevent accidents. Failure to follow safety guidelines may result in personal injury or equipment damage. Never exceed pressure limits or ignore safety warnings, as this can lead to uncontrolled movements or system failure. Always consult Emerson Process Management for clarification if unsure about any procedure.
Adhere to all safety precautions to ensure safe handling and operation of the actuator. Proper safety measures are critical to preventing harm to personnel and ensuring reliable system performance.
4;2 Pressure Limitations
The Fisher 667 actuator has specific pressure limitations to ensure safe and reliable operation. Maximum pressures vary by construction type, with cast iron and all-steel models having different ratings. Exceeding these limits can cause uncontrolled movement, damage to components, or leakage. Always use pressure-limiting devices to prevent exceeding maximum pressures. Refer to table 2 in the manual for exact values. Excessive pressure can harm the diaphragm casing or actuator stem, leading to system failure. Adhere to these limits to maintain safety and performance.
Operation
The Fisher 667 actuator operates by responding to air pressure changes, moving the valve plug to regulate flow. Spring action opposes diaphragm movement, ensuring precise control.
5.1 How the Actuator Works
The Fisher 667 actuator is a reverse-acting, spring-opposed diaphragm actuator. It operates by applying air pressure to the diaphragm, which moves the valve plug to regulate flow. When air pressure decreases or is lost, the spring extends the actuator stem, providing fail-safe operation. The actuator works with a pneumatic positioner for precise air pressure control, ensuring the valve opens or closes fully. It can also be equipped with a handwheel for manual operation, offering flexibility in control valve management.
5.2 Reverse-Acting Mechanism
The Fisher 667 actuator employs a reverse-acting mechanism, utilizing air pressure to lift the diaphragm away from the valve. This action is opposed by a spring that ensures the actuator stem extends when air pressure decreases or is lost. This fail-safe design guarantees that the valve returns to a predetermined position, enhancing operational safety and reliability. The reverse-acting mechanism is crucial for maintaining consistent process control, especially in applications requiring precise and dependable valve operation.
Maintenance
Regular maintenance ensures optimal performance. Inspect and replace worn parts, lubricate components, and verify proper operation. Always follow safety guidelines and use approved tools and equipment.
6.1 Routine Maintenance Checks
Perform routine inspections to ensure the actuator operates efficiently. Check for worn or damaged components, such as diaphragms and springs. Verify proper alignment of the actuator stem and valve plug. Lubricate moving parts regularly to prevent friction and wear. Inspect air connections for leaks and ensure all fasteners are securely tightened. Replace any faulty parts immediately to maintain performance and safety. Always refer to the manufacturer’s guidelines for specific maintenance procedures.
6.2 Size 80 Actuator Maintenance
For the Size 80 Fisher 667 actuator, ensure regular lubrication of moving parts, such as the stem connector. Inspect the diaphragm for signs of wear or damage and replace if necessary. Check the actuator stem alignment with the valve plug to ensure proper operation. Tighten all mounting bolts to the specified torque value to prevent loosening. Replace any worn or corroded components promptly to maintain performance. Refer to the parts list for correct replacement parts and follow the manufacturer’s torque specifications for bolts and fasteners.
6.3 Size 100 Actuator Maintenance
For the Size 100 Fisher 667 actuator, routine maintenance includes inspecting the diaphragm for leaks and wear. Lubricate the actuator stem and connector with the recommended grease. Check the alignment of the actuator stem with the valve plug and ensure proper engagement. Verify the travel stop adjustment to prevent over-travel. Inspect and tighten all mounting bolts to the specified torque value. Replace any damaged or worn parts using the parts list as a reference. Ensure all maintenance is performed with the actuator in a safe, depressurized state to avoid injury or damage.
Adjustments
Adjustments for the Fisher 667 actuator include spring tension and travel limits. Proper calibration ensures precise valve control. Refer to specific sections for detailed procedures.
7.1 Spring Adjustment
The Fisher 667 actuator’s spring adjustment is critical for proper operation. To adjust, ensure the actuator is at full extension. Turn the spring adjustment bolt clockwise to increase spring tension or counterclockwise to decrease it. Use a torque wrench to achieve the recommended setting. Always refer to the specifications in the manual for the correct torque value. Improper adjustment can lead to inaccurate valve positioning or actuator malfunction. Ensure all adjustments are made by trained personnel following safety guidelines.
7.2 Travel Adjustment
The Fisher 667 actuator’s travel adjustment ensures proper valve positioning. To adjust, locate the travel indicator scale on the actuator. Using a screwdriver, turn the adjustment screw to align the indicator with the desired travel position. Ensure the actuator stem is fully extended or retracted before making adjustments. Over-traveling can damage the actuator or valve. Refer to the manual for specific torque values and adjustment procedures. Always verify the travel range matches the application requirements to maintain precise control and safe operation.
Parts Ordering
Order genuine Fisher 667 parts using the provided parts list or kits. Reference the manual for specific part numbers and ordering instructions to ensure compatibility and authenticity.
8.1 Parts Kits
Fisher 667 parts kits are pre-assembled sets containing essential components for maintenance and repairs. These kits are available for both size 80 and 100 actuators, ensuring convenience and compatibility. Each kit includes seals, gaskets, and other critical parts required for specific tasks. Using genuine Fisher parts ensures optimal performance and longevity. Always refer to the parts list for exact kit contents and ordering instructions to maintain authenticity and functionality of your actuator. Genuine kits are designed to meet precise specifications for reliable operation.
8.2 Parts List
The Fisher 667 actuator parts list provides a detailed catalog of components, including diaphragms, springs, and mounting hardware. Each part is listed with descriptions and part numbers for easy identification. The list is categorized by actuator size (80 and 100) to ensure accurate ordering. Refer to this section for specific part details before placing orders. Always use genuine Fisher parts to maintain compliance with safety and performance standards. This list is essential for proper maintenance and repairs, ensuring optimal actuator functionality.
Optional Configurations
The Fisher 667 actuator offers optional configurations, including top-mounted and side-mounted handwheels, to suit specific application needs. These configurations enhance functionality and operational flexibility for precise control.
9.1 Top-Mounted Handwheel
The top-mounted handwheel is an optional feature for the Fisher 667 actuator, specifically designed for size 100 models. It serves as either a travel stop or an auxiliary manual actuator, providing precise control over valve positioning. This configuration allows for easy manual operation when needed, ensuring flexibility in various industrial applications. The handwheel’s placement on top of the actuator ensures convenient access and efficient functionality, making it a practical choice for systems requiring additional control options.
9.2 Side-Mounted Handwheel
The side-mounted handwheel is an optional configuration available for the Fisher 667 actuator, specifically designed for size 80 models. It functions as an auxiliary manual actuator, enabling manual operation of the valve when needed. This feature provides convenient access for operators, allowing precise control over valve positioning. The side-mounted design ensures easy engagement, making it ideal for systems requiring periodic manual intervention to ensure proper valve operation and process control.
Figures and Diagrams
Figure 1 illustrates the Size 80 Fisher 667 Actuator, showcasing its components and design. Additional diagrams, such as Figure 2, provide detailed schematics for operation and maintenance.
10.1 Figure 1: Size 80 Fisher 667 Actuator
Figure 1 depicts the Size 80 Fisher 667 Actuator, highlighting its key components, including the diaphragm, spring, and mounting hardware. This visual aid helps users identify parts, understand assembly, and troubleshoot issues. The diagram also illustrates the actuator’s design, showcasing how it integrates with control valves. Referencing this figure ensures proper installation, maintenance, and operation of the actuator, aligning with the manual’s guidelines for safe and effective use.
This manual provides comprehensive guidance for the Fisher 667 actuator, covering installation, operation, maintenance, and adjustments. By following these instructions, users can ensure safe and efficient actuator performance. Always refer to this manual for troubleshooting and parts ordering. For additional support, contact Emerson Process Management. Proper usage and adherence to safety precautions are crucial for optimal functionality and longevity of the actuator. This concludes the Fisher 667 actuator manual.