fisher 667 instruction manual
Fisher 667 Actuator Instruction Manual⁚ A Comprehensive Guide
This manual covers installation, adjustment, maintenance, and parts ordering for Fisher 667 actuators, sizes 30/30i-76/76i and 87, including the 667-4 in sizes 70/70i and 87. Consult separate manuals for valve positioners and other accessories. Safety precautions are crucial; always follow instructions carefully.
Introduction and Scope
This comprehensive instruction manual provides detailed guidance on the proper installation, operation, and maintenance of Fisher 667 diaphragm actuators. The manual specifically addresses actuator sizes ranging from 30/30i through 76/76i, and size 87. Furthermore, it includes instructions for the 667-4 actuator in sizes 70/70i and 87. This document serves as a primary resource for technicians and engineers responsible for the installation, commissioning, and ongoing maintenance of these actuators in various industrial applications. The information presented herein is intended to ensure safe and efficient operation, maximizing the lifespan and performance of the Fisher 667 actuator. Remember, this manual focuses solely on the actuator itself; separate documentation is required for associated components like valve positioners and other accessories that may be used in conjunction with the Fisher 667. Always refer to the relevant documentation for complete system understanding. Before commencing any procedures, ensure you have the necessary training and qualifications to safely handle and work with industrial control valve systems.
Actuator Description and Specifications
The Fisher 667 actuator, depicted in Figure 1 (where available), is a reverse-acting, spring-opposed diaphragm actuator designed for use with control valves. Its robust construction ensures reliable performance in demanding industrial environments. Key features include a durable diaphragm, precisely engineered spring mechanism, and a variety of mounting options to suit diverse valve configurations. Detailed specifications for each actuator size (30/30i through 76/76i and size 87, and 667-4 in sizes 70/70i and 87) are provided in Table 1 (where available), including effective area, yoke boss diameter, and maximum pressure limitations. Always refer to the actuator’s nameplate for specific details pertaining to your individual unit. Understanding these specifications is crucial for proper installation and operation, ensuring compatibility with the connected valve and preventing damage or malfunction. Note that this section focuses solely on the physical characteristics and performance parameters of the Fisher 667 actuator itself. Information regarding compatible valves and other system components will be detailed in separate sections or referenced in other manuals.
Installation Procedures⁚ Mounting and Connections
Before commencing installation, ensure you possess the necessary training and qualifications for handling valves, actuators, and associated equipment. Carefully review all safety precautions and warnings detailed in this manual. Begin by verifying the actuator size matches the valve specifications. If the actuator and valve arrive pre-assembled, factory adjustments are already in place, and installation involves mounting the assembly within the pipeline. For separate actuator and valve installations, carefully align the actuator yoke with the valve stem. For most sizes, gently lower the actuator onto the valve, securing the yoke locknut once the yoke is over the valve stem. Smaller actuators may require a different procedure. Securely tighten all connections according to the specified torque values outlined in Table 2 (where available), preventing leaks and ensuring a strong, stable mounting. Correctly connecting the stem connector assembly (key 31) is vital, ensuring proper engagement of threads to avoid damage. Always consult relevant diagrams (Figures 11, 12, 13, 14, and 15, where applicable) for visual guidance during the mounting process. Improper installation can lead to malfunction or damage; if unsure, consult a qualified professional.
Adjustment and Calibration⁚ Bench Set and Travel
The bench set pressure is crucial for establishing the initial spring compression of the actuator, performed with the valve-actuator assembly off the pipeline. Correct compression ensures proper functioning once in service. Determine the required bench set pressure using the provided specifications; this pressure adjusts the initial spring compression. Variations in spring free length and rate may lead to slight differences. If discrepancies occur, consult your Emerson Automation Solutions sales office for assistance. Accurate travel adjustment is equally important. Measure the actuator’s travel, ensuring it aligns with the valve’s rated travel; avoid contact with travel stops during measurement. Use a travel indicator scale, marking reference points with tape. If the measured travel is inaccurate, consider spring tolerances; Adjustments involve manipulating the actuator’s internal components, such as the spring and stem connector, though specific procedures depend on the actuator’s size. Consult the detailed diagrams and step-by-step instructions within this manual for precise adjustment procedures for your specific Fisher 667 actuator model. Incorrect adjustments can result in improper valve operation; if uncertain, seek professional guidance.
Maintenance and Troubleshooting⁚ Common Issues and Solutions
Regular maintenance is vital for optimal Fisher 667 actuator performance. Inspect the actuator periodically for signs of wear, damage, or leaks. Check the diaphragm for cracks or deterioration; replace if necessary. Lubricate moving parts according to the manufacturer’s recommendations. Address any unusual noises or vibrations promptly. Common issues include insufficient travel, erratic movement, or leaks. Insufficient travel might indicate problems with the spring, stem connector, or internal components. Erratic movement could result from excessive friction, a malfunctioning valve, or incorrect calibration. Leaks may originate from damaged seals or connections. Troubleshooting involves systematically checking these areas, referring to the diagrams and troubleshooting flowchart in this manual. Always follow lockout/tagout procedures before performing any maintenance or repair. If problems persist, contact Emerson Automation Solutions or a qualified service technician. Remember to use only genuine Fisher replacement parts to maintain warranty validity and ensure optimal functionality. Keep detailed maintenance logs, noting dates, actions taken, and any observations. This facilitates future troubleshooting and extends the actuator’s lifespan.
Parts Ordering and Replacement⁚ Identifying and Sourcing Components
To order replacement parts for your Fisher 667 actuator, you’ll need to identify the specific component and its part number. This information is found within the detailed parts list and diagrams provided in this manual. Each component is clearly labeled with its corresponding part number for easy identification. When ordering, always specify the actuator size (e.g., 30/30i, 70/70i, 87) to ensure compatibility. Use only genuine Fisher replacement parts to maintain warranty coverage and guarantee optimal performance and longevity. Contact your local Emerson Automation Solutions distributor or authorized service center to place your order. Provide the complete part number and actuator model number to avoid delays or incorrect shipments. Before replacing any part, consult the relevant sections of this manual for detailed instructions and safety precautions. Proper installation is crucial to prevent damage to the actuator or other components. Keep a record of all part replacements, including dates, part numbers, and any relevant notes. This documentation aids in future maintenance and troubleshooting. Improper part installation can void the warranty, so always adhere to the provided guidelines.
Safety Precautions and Warnings⁚ Essential Guidelines for Safe Operation
Before installing, operating, or maintaining a Fisher 667 actuator, ensure you are fully trained and qualified in valve, actuator, and accessory procedures. Failure to do so may result in serious injury or equipment damage. Always read and understand all safety cautions and warnings in this manual before proceeding. Never exceed the maximum pressure limits specified for the actuator size; doing so risks malfunction, loss of process control, and potential injury. When working with pressurized systems, always use appropriate lockout/tagout procedures to prevent accidental activation. Wear appropriate personal protective equipment (PPE), including safety glasses, gloves, and other protective gear as needed, depending on the specific task and potential hazards. Be aware of potential hazards associated with moving parts, high pressures, and process fluids. Never attempt repairs or modifications without proper training and authorization. If you encounter any issues or uncertainties, consult the troubleshooting section of this manual or contact your Emerson Automation Solutions representative for assistance. Regular inspection of the actuator for signs of wear, damage, or leaks is critical for safe operation. Address any identified issues promptly to prevent accidents.
Handwheel Assemblies⁚ Top-Mounted and Side-Mounted Types
The Fisher 667 actuator utilizes handwheel assemblies for manual operation and as adjustable travel stops. Top-mounted handwheels are commonly employed to limit the full extension of the actuator stem, acting as an adjustable down travel stop. Rotating the handwheel counter-clockwise retracts the extension rod, thus shortening the actuator stem’s travel. Specific procedures for installation, removal, and maintenance of the top-mounted handwheel assembly vary depending on the actuator size (e.g., 70/70i and 87 handwheels require removal of the cap, cotter pin, castle nut, bearing retainer, and thrust bearing before access). Side-mounted handwheels offer an alternative manual control option, typically found on smaller actuator sizes such as 34/34i. Their installation and maintenance will follow a different sequence of steps, detailed within the relevant section of this instruction manual. Always refer to the detailed diagrams and torque specifications provided in this manual for proper installation and servicing of both top and side-mounted handwheel assemblies. Improper handling can lead to malfunction or damage, potentially compromising the safety of the system.
Related Manuals and Resources⁚ Accessing Additional Information
For comprehensive understanding and operation of the Fisher 667 actuator system, it’s essential to consult related documentation beyond this instruction manual. Information regarding compatible valve positioners and other accessories is found in separate instruction manuals. These manuals provide detailed specifications, installation guides, and troubleshooting advice specific to each component. Emerson Automation Solutions offers various educational courses on Fisher 667 diaphragm actuators and other products, providing valuable training for qualified personnel. Accessing these resources ensures proper installation, operation, and maintenance, maximizing the lifespan and performance of your equipment. The Emerson website and other online resources such as manualslib.com can provide further technical specifications, diagrams, and troubleshooting guides. Always prioritize using the most up-to-date versions of these manuals and resources to ensure you have the latest information and safety guidelines for your specific Fisher 667 actuator model and size. This comprehensive approach to information gathering will help prevent operational errors and maximize the efficiency of your system.
