The Fisher 667 Actuator is a diaphragm actuator designed for reliable operation in various industrial applications. Available in sizes 30-76 and 87, it offers precise control and durability.
1.1 Overview of the Fisher 667 Actuator
The Fisher 667 actuator is a robust diaphragm actuator designed for industrial valve automation. Available in sizes 30-76 and 87, it offers precise control and durability. The 667-4 model provides extended travel for larger applications. Suitable for oil, gas, and chemical processing, it ensures reliable performance in demanding environments. Its compact design and versatile mounting options make it ideal for various valve configurations, supporting both pneumatic and manual operations with optional handwheel assemblies.
1.2 Scope of the Manual
This manual provides detailed instructions for the installation, adjustment, maintenance, and parts ordering of the Fisher 667 actuator in sizes 30-76 and 87. It also covers the 667-4 actuator for sizes 70 and 87. The guide includes safety precautions, technical specifications, and troubleshooting tips. Refer to separate manuals for information on valve positioners and other accessories. This resource ensures optimal performance and longevity of the actuator in various industrial applications.
Installation Instructions
Installation of the Fisher 667 actuator requires careful alignment with the valve stem and proper mounting to ensure smooth operation. Follow the manual’s step-by-step guide for securing the actuator, adjusting the spring, and connecting piping. Ensure all safety precautions are observed, and refer to the manual for specific instructions tailored to your actuator size and configuration.
2.1 Mounting the Actuator on the Valve
Mounting the Fisher 667 actuator requires precise alignment of the valve stem with the actuator’s yoke. Ensure the actuator is securely fastened to the valve, maintaining proper stem engagement. Tighten the mounting bolts evenly, following torque specifications. Verify the actuator’s spring load aligns with the valve’s travel range. After mounting, check for proper diaphragm movement and ensure no interference occurs during operation. Refer to the manual for size-specific adjustments and safety guidelines.
2.2 Bench Set Adjustment
Bench set adjustment ensures proper actuator response to loading pressure. Begin by applying loading pressure to the lower bench set range. Mark the actuator stem’s position when it first moves. Adjust the spring until the mark aligns with the desired travel indicator. Ensure the upper bench set pressure is applied and verify the travel stop engagement. This process ensures accurate valve positioning and optimal performance. Always refer to the manual for specific torque and pressure guidelines.
2.3 Spring Verification
Spring verification ensures the actuator’s spring is correctly set for consistent performance. Loosen the spring adjustor locknut and rotate the adjustor to achieve the desired torque specification. Tighten the locknut securely after adjustment. Ensure the actuator stem aligns with the travel indicator at both bench set points. This process guarantees accurate valve positioning and maintains optimal actuator responsiveness. Always refer to the manual for specific torque values and adjustment procedures.
Maintenance and Adjustment
Regular maintenance ensures optimal performance. Inspect and clean the actuator, lubricate moving parts, and check spring tension. Adjustments should be made by trained personnel following manual guidelines.
3.1 Routine Maintenance Tasks
Regular maintenance is crucial for optimal actuator performance. Clean the actuator casing and internal components, ensuring no dirt or debris interferes with operation. Lubricate moving parts with lithium grease, but avoid over-lubrication. Inspect diaphragm and springs for wear or damage. Check torque on all fasteners, ensuring they meet specified values. Perform these tasks periodically to prevent malfunctions and extend service life. Always follow manual guidelines for safe and effective maintenance procedures.
3.2 Adjusting the Actuator
Adjusting the Fisher 667 actuator involves setting the bench set and verifying spring tension. Locate the adjustment screws near the spring and turn them clockwise to increase loading pressure or counterclockwise to decrease it. Mark the current setting before adjustments. Use a screwdriver, ensuring the system is depressurized for safety. After adjustment, check the travel indicator to ensure it matches specifications. If necessary, adjust the travel stop caps. Avoid over-tightening to prevent damage. Measure deadband to ensure responsiveness, referring to troubleshooting guidelines if issues arise. Follow these steps carefully for optimal performance.
3.3 Lubrication and Cleaning
Regular lubrication and cleaning are essential for the Fisher 667 actuator’s longevity. Apply lithium-based grease to the diaphragm casing and moving parts periodically. Avoid over-lubrication, as it may attract dirt. Clean surfaces with a soft cloth and mild solvent, ensuring no harsh chemicals damage components. For sizes 30-76 and 87, inspect and clean the actuator stem and yoke regularly. Do not apply lubricant to bolts and nuts, as they must remain clean and dry for proper torque specifications.
Technical Specifications
The Fisher 667 actuator offers precise control with a maximum travel of 76 mm and 102 mm for the 667-4 model. It supports various pressure ratings and materials, ensuring compatibility across applications. Refer to the actuator nameplate for specific details on pressure limits and configurations.
4.1 Actuator Sizes and Types
The Fisher 667 actuator is available in sizes 30 through 76 and size 87, catering to various application needs. The 667-4 model specifically covers sizes 70 and 87, offering extended travel capabilities. These actuators are designed as diaphragm types, ensuring precise control and durability. Each size is tailored for specific pressure and flow requirements, with detailed specifications provided on the actuator nameplate for accurate installation and operation.
4.2 Maximum Travel and Pressure Ratings
The Fisher 667 actuator offers a maximum travel of 76 mm (3 inches), while the 667-4 model provides 102 mm (4 inches) for extended control. Pressure ratings vary by size, with detailed specifications on the actuator nameplate. Exceeding these ratings can damage the diaphragm or casing, emphasizing the importance of adhering to recommended limits for optimal performance and safety in industrial applications.
4.3 Materials and Compatibility
The Fisher 667 actuator is constructed from durable materials, including high-quality diaphragms and casings, ensuring long-term reliability. It is compatible with a wide range of media and operating conditions, including various industrial applications. The actuator’s design accommodates different environmental factors, such as temperature and corrosion resistance. Specific material compatibility details are outlined in the manual to ensure proper installation and operation in diverse settings.
Troubleshooting Common Issues
Common issues with the Fisher 667 actuator include diaphragm damage, stem interference, and excessive friction. Regular inspection and lubrication help prevent malfunctions and ensure smooth operation.
5.1 Diagnosing Actuator Malfunctions
Diagnosing malfunctions in the Fisher 667 actuator involves identifying symptoms like unusual noise, erratic movement, or decreased performance. Inspect the diaphragm for damage, check stem alignment, and ensure proper spring tension. Verify loading pressure and travel limits. Perform bench set adjustments and measure deadband to isolate issues. Consult the manual for specific diagnostic procedures to ensure accurate troubleshooting and safe repair practices.
5.2 Repair and Replacement Guidelines
Repairs on the Fisher 667 actuator require careful adherence to the manual. Disconnect pneumatic supplies and follow lock-out procedures for safety. Inspect and replace damaged components like the diaphragm or stem. Clean all parts thoroughly before reassembly. Use genuine Fisher replacement parts to ensure compatibility. Tighten bolts and nuts to specified torque limits to avoid damage. Consult the manual for step-by-step guidance on disassembly and reassembly procedures.
5.3 Deadband Measurement and Adjustment
Deadband in the Fisher 667 actuator is measured by observing the pressure range where no valve movement occurs. To adjust, first ensure the actuator is properly bench-set. Apply loading pressure and measure the response using a gauge. If deadband exceeds acceptable limits, adjust the spring or replace worn parts. Refer to the manual for specific torque values and procedures to minimize friction and restore precise control. Regular adjustment ensures optimal performance and prevents operational discrepancies.
Safety Precautions
Always follow safety guidelines when handling the Fisher 667 actuator. Avoid exceeding maximum pressure ratings to prevent damage or injury. Ensure proper training before operation.
6.1 General Safety Guidelines
Always follow safety guidelines when working with the Fisher 667 actuator. Ensure proper training and qualifications before installation, operation, or maintenance. Avoid exceeding maximum pressure ratings to prevent damage or injury. Disconnect pneumatic supplies and use lock-out procedures during maintenance. Wear protective equipment and adhere to all safety warnings in the manual to ensure safe operation and avoid potential hazards.
6.2 Handling and Storage
Handle the Fisher 667 actuator with care to avoid damage. Store it in a dry, clean environment, protected from extreme temperatures and physical stress. Use original packaging or equivalent for storage. Avoid exposing the actuator to corrosive substances or moisture. Inspect for damage before installation and ensure all components are securely fastened. Proper handling and storage ensure optimal performance and longevity of the actuator.
6.3 Emergency Procedures
In case of an emergency, isolate the Fisher 667 actuator from the system immediately. Initiate lock-out procedures to ensure safety. Disconnect pressure piping and relieve pressure gradually. If diaphragm damage occurs, avoid further operation. Contact qualified personnel for repairs. Never exceed maximum pressure ratings to prevent equipment failure. Follow all safety guidelines to minimize risks and ensure proper recovery procedures are in place.
Parts and Accessories
The Fisher 667 actuator supports various accessories, including handwheels, positioners, and mounting kits; These components enhance functionality and ensure compatibility with diverse valve systems for optimal performance.
7.1 Ordering Replacement Parts
To order replacement parts for the Fisher 667 actuator, refer to the actuator’s nameplate for specific part numbers and configurations. Contact Emerson Automation Solutions or authorized distributors for genuine components. Ensure compatibility by verifying part numbers with the manual or manufacturer’s website. Use only Fisher-authorized parts to maintain performance and compliance with safety standards. Proper documentation and order details are essential for accurate fulfillment and timely delivery of required components.
7.2 Compatible Accessories
The Fisher 667 actuator supports various accessories to enhance functionality. Compatible options include valve positioners for precise control, handwheel assemblies for manual operation, and loading pressure piping connections. These accessories ensure optimal performance and adaptability. Refer to the manual or manufacturer’s website for a full list of compatible components. Proper installation and configuration of these accessories are critical for maintaining actuator efficiency and system integrity.
7.3 Understanding the Actuator Nameplate
The Fisher 667 actuator nameplate provides essential information, including the model number, actuator size, and maximum pressure ratings. It also lists specific details about the actuator’s configuration and compatibility. This data is crucial for proper installation, operation, and maintenance. Always refer to the nameplate to ensure compliance with specifications and to verify compatibility with related equipment and accessories. It serves as a quick reference for technicians and operators.
Accessories and Additional Equipment
The Fisher 667 actuator supports various accessories, including valve positioners, handwheel assemblies, and loading pressure piping connections, to enhance its functionality and performance in industrial applications.
8.1 Valve Positioner Installation
The valve positioner enhances precise control of the Fisher 667 actuator by converting electrical signals to pneumatic output. Installation requires mounting the positioner on the actuator yoke, ensuring proper alignment with the actuator stem. Connect the pneumatic lines and electrical wiring according to the manufacturer’s guidelines. Use compatible components to maintain system integrity. Always refer to the specific positioner manual for detailed instructions and torque specifications to ensure optimal performance and safety.
8.2 Handwheel Assembly Options
The Fisher 667 actuator offers two handwheel configurations: top-mounted and side-mounted. The top-mounted handwheel is ideal for occasional manual operation, while the side-mounted design is recommended for frequent use due to its durability and ease of access. Installation involves securing the handwheel to the actuator stem and ensuring proper alignment. Torque specifications must be followed to prevent damage. Choose the configuration based on operational needs for optimal performance.
8.3 Loading Pressure Piping Connections
Connect the loading pressure piping to the NPT internal connection on the actuator’s yoke. For sizes 70 and 87, remove the 1/4 NPT bushing if a 1/2 NPT connection is needed. Ensure proper alignment and torque specifications to avoid damage. Secure the piping firmly, following the manual’s guidelines for precise control and durability. Proper connections are critical for reliable actuator performance and safety.
The Fisher 667 actuator ensures reliable operation when properly installed and maintained. Adherence to manual guidelines guarantees optimal performance and safety in industrial applications.
9.1 Final Tips for Optimal Performance
Regular lubrication of moving parts and adherence to bench set procedures ensure smooth operation. Proper installation and alignment with the valve stem are critical. Always follow torque specifications for bolts and nuts to avoid damage. Routine maintenance, including diaphragm inspection and spring adjustments, prolongs actuator lifespan. Refer to the manual for specific guidelines to maximize efficiency and safety in industrial applications.
9.2 Importance of Regular Maintenance
Regular maintenance is crucial for ensuring the Fisher 667 Actuator operates efficiently and safely. Inspect diaphragms for wear, clean or replace parts as needed, and verify spring tensions. Lubricate moving components periodically to prevent friction-related issues. Adhere to the recommended maintenance schedule to avoid unexpected failures and ensure optimal performance over time. Proper upkeep extends the actuator’s lifespan and maintains process control integrity.