The Watson Marlow Qdos 120 is a high-performance chemical metering pump offering precise dosing with a flow rate of 0.1 to 2000 ml/min. Designed for water treatment, manufacturing, and laboratories, it features ReNu pumphead technology for accurate, linear flow. This manual provides essential guidance for installation, operation, and maintenance to ensure optimal performance and longevity.
1.1 Overview of the Qdos 120 Pump
The Watson Marlow Qdos 120 is a high-performance chemical metering pump designed for precise and versatile dosing applications. With a flow rate range of 0.1 to 2000 ml/min, it is ideal for water treatment, manufacturing, and laboratory settings. The pump features ReNu pumphead technology, ensuring accurate, linear, and repeatable flow. Its compact design and chemical compatibility make it suitable for a wide range of industrial applications. The Qdos 120 is part of a series that includes models like the Qdos 20, 30, and 60, all known for their reliability and ease of use. This manual provides detailed guidance for optimal operation and maintenance.
1.2 Importance of the Manual for Operation and Maintenance
The manual is essential for the safe and effective operation of the Watson Marlow Qdos 120 pump. It provides detailed instructions for installation, setup, and routine maintenance, ensuring optimal performance and longevity. The manual also includes troubleshooting guidelines to address common issues, minimizing downtime. By following the manual, users can ensure compliance with safety standards and regulatory requirements. Proper use of the manual helps maintain the pump’s accuracy and reliability, particularly for its ReNu pumphead technology. Referencing the manual is crucial for understanding flow rate settings, chemical compatibility, and maintenance procedures, ensuring the pump operates efficiently in various industrial applications.
Key Features and Benefits of the Qdos 120 Pump
The Qdos 120 offers high-performance chemical metering, a versatile flow rate range (0.1 to 2000 ml/min), and ReNu Pumphead Technology for accurate, repeatable, and maintenance-free operation.
2.1 High-Performance Chemical Metering
The Watson Marlow Qdos 120 excels in chemical metering, delivering precise and consistent flow rates from 0.1 to 2000 ml/min. Its advanced design ensures high accuracy, making it ideal for demanding applications in water treatment, manufacturing, and laboratories. The pump’s ability to maintain precise control over chemical dosing reduces material waste and ensures process efficiency. With its robust construction and ReNu Pumphead Technology, the Qdos 120 minimizes maintenance needs while providing reliable, long-term performance. This makes it a versatile and cost-effective solution for industries requiring accurate and high-performance chemical metering capabilities.
2.2 Versatile Flow Rate Range (0.1 to 2000 ml/min)
The Watson Marlow Qdos 120 offers an exceptional flow rate range of 0.1 to 2000 ml/min, catering to a wide variety of applications. This versatility ensures precise control for both small-scale laboratory settings and large industrial processes. The pump’s high turndown ratio of 7930:1 allows for accurate flow adjustment without compromising performance. Its ability to handle such a broad range makes it ideal for water treatment, chemical dosing, and manufacturing. The Qdos 120’s flexibility minimizes the need for multiple pumps, reducing costs and simplifying system design; This wide range, combined with ReNu Pumphead Technology, ensures consistent and reliable operation across diverse applications.
2.3 ReNu Pumphead Technology
The Qdos 120 features ReNu Pumphead Technology, designed for accurate, linear, and repeatable flow. This innovative cartridge-based system ensures consistent chemical metering and eliminates the need for valves, reducing potential leak points. The ReNu Pumphead is easy to replace without tools, minimizing downtime and maintenance. Its design provides a turndown ratio of 7930:1, maintaining precision across the entire flow range. This technology enhances reliability and durability, making it ideal for demanding applications. The ReNu Pumphead’s simplicity and performance contribute to the Qdos 120’s reputation as a high-quality, low-maintenance metering pump, ensuring optimal operation in various industrial and laboratory settings.
Design and Construction of the Qdos 120
The Qdos 120 features a compact, durable design with chemical-compatible materials, ensuring reliable operation. Its ReNu pumphead and Santoprene tubing provide excellent resistance to aggressive chemicals, minimizing wear.
3.1 Compact and Durable Design
The Qdos 120 pump is engineered with a compact and robust design, ensuring durability and reliability in demanding environments. Its lightweight construction allows easy installation and portability, while the ReNu pumphead technology enhances longevity by minimizing wear. The pump’s materials are selected for chemical compatibility, ensuring resistance to aggressive substances. This design makes it ideal for water treatment, manufacturing, and laboratory settings, where space and durability are critical. The compact footprint also simplifies integration into existing systems, providing a practical solution for precise chemical metering applications.
3.2 Chemical Compatibility and Material Selection
The Qdos 120 pump is designed to handle aggressive chemicals, with materials carefully selected for compatibility and durability. The ReNu pumphead features Santoprene tubing with PFPE lubricant, ensuring resistance to a wide range of corrosive substances. This design minimizes wear and extends the pump’s lifespan. Users are advised to consult the chemical compatibility lists provided by Watson-Marlow to ensure safe operation with specific chemicals. The pump’s construction prioritizes safety and performance, making it suitable for harsh industrial environments while maintaining precise metering accuracy.
Performance Capabilities
The Qdos 120 delivers high accuracy with flow rates from 0.1 to 2000 ml/min and pressure ratings up to 4 bar, ensuring consistent and reliable performance.
4.1 Flow Rate Accuracy and Precision
The Watson Marlow Qdos 120 pump ensures exceptional flow rate accuracy and precision, delivering consistent performance across its range of 0.1 to 2000 ml/min. With a turndown ratio of 7930:1, it maintains high accuracy even at low flow rates, making it ideal for demanding applications. The ReNu pumphead technology provides linear and repeatable flow, minimizing deviations and ensuring reliable chemical metering. This precision is crucial for applications requiring strict control, such as water treatment and chemical processing. The pump’s design ensures minimal maintenance and recalibration, further enhancing its operational reliability and consistency in challenging environments.
4.2 Pressure Ratings and Operational Limits
The Watson Marlow Qdos 120 pump operates effectively under pressure ratings up to 4 bar (60 PSI), ensuring reliable performance in various industrial applications. It is designed to handle a wide range of chemicals while maintaining operational integrity. Exceeding these pressure limits may lead to reduced pump life or damage. Proper material selection, such as Santoprene tubing, ensures chemical compatibility and durability. Adhering to the specified operational limits is crucial for optimal performance and longevity. Always refer to the manual for detailed guidelines on pressure ratings and compatible applications to ensure safe and efficient operation.
Installation and Setup
Proper installation and setup of the Qdos 120 pump ensure optimal performance. Follow the manual’s pre-installation requirements, step-by-step guide, and calibration instructions for accurate operation.
5.1 Pre-Installation Requirements
Before installing the Watson Marlow Qdos 120 pump, ensure the system meets all compatibility and safety standards. Review the manual to confirm the pump’s suitability for your application. Check chemical compatibility with the pump’s materials and ensure the installation site is clean, dry, and free from hazards. Verify that all necessary tools and accessories, such as tubing and connectors, are available. Familiarize yourself with the pump’s components and controls. Ensure proper power supply and environmental conditions are met. Refer to the manual for specific pre-installation checks to guarantee safe and efficient operation. Proper preparation ensures a smooth installation process.
5.2 Step-by-Step Installation Guide
Begin by unpacking and inspecting the Watson Marlow Qdos 120 pump for any damage. Mount the pump on a stable, level surface using the provided hardware. Connect the inlet and outlet tubing to the pumphead, ensuring compatibility with the chemicals used. Secure the tubing with the correct connectors and fittings. Install the pump in a well-ventilated area, away from direct sunlight and moisture. Connect the power supply according to the manual’s specifications. Ensure all electrical connections are secure and meet safety standards. Finally, perform a leak test and verify proper operation before integrating the pump into your system. Follow the manual for detailed instructions.
5.3 Initial Setup and Calibration
After installation, power on the Watson Marlow Qdos 120 pump and navigate to the setup menu using the user interface. Prime the pump by purging air from the system. Set the desired flow rate using the keypad or remote control, ensuring accuracy. Calibrate the pump according to the manual’s instructions, adjusting settings as needed. Verify proper operation by running a test cycle. Regularly check and maintain the ReNu pumphead for optimal performance. Refer to the manual for detailed calibration procedures and troubleshooting tips to ensure precise metering and reliable operation. Proper setup is crucial for achieving accurate and consistent dosing results. Always follow safety guidelines during calibration.
Operation and Control
The Watson Marlow Qdos 120 pump offers manual, remote, and Profibus control modes, ensuring flexible operation. Its user-friendly interface simplifies navigation and parameter adjustment, while remote connectivity enhances convenience for precise control and monitoring.
6.1 Control Modes (Manual, Remote, Profibus)
The Watson Marlow Qdos 120 pump offers three control modes: Manual, Remote, and Profibus. In Manual mode, users can directly adjust flow rates using the pump’s interface. Remote mode allows operation via external signals, enabling integration with control systems. Profibus mode facilitates advanced communication in industrial settings. The manual provides detailed guidance for setting up and using these modes, ensuring flexibility for various applications. This versatility makes the Qdos 120 suitable for both simple and complex dosing tasks, enhancing operational efficiency and precision across different industries.
6.2 User Interface and Navigation
The Watson Marlow Qdos 120 pump features an intuitive user interface designed for ease of operation. The clear LCD display and straightforward menu navigation allow users to quickly access settings, monitor flow rates, and perform adjustments. The interface is responsive and user-friendly, catering to both novice and experienced operators. The manual provides detailed instructions on navigating the menu, configuring parameters, and utilizing advanced features. This ensures seamless operation and minimizes the learning curve, making the Qdos 120 a practical choice for precise chemical metering applications across various industries.
6.3 Remote Operation and Connectivity
The Watson Marlow Qdos 120 pump supports remote operation, enabling seamless integration with external control systems. It offers multiple control modes, including Profibus communication, allowing for precise automation and monitoring. The pump can be operated remotely via control signals, reducing the need for manual intervention. Connectivity options ensure compatibility with industrial systems, enhancing operational efficiency. The manual provides detailed instructions for setting up remote operation, ensuring smooth integration into existing processes. This feature is particularly beneficial for large-scale industrial applications, where centralized control and monitoring are essential for maintaining optimal performance and consistency.
Maintenance and Troubleshooting
The Qdos 120 requires routine maintenance, including pumphead cleaning and tubing checks. Refer to the manual for troubleshooting common issues and chemical compatibility guidelines.
7.1 Routine Maintenance Procedures
Regular maintenance ensures optimal performance of the Qdos 120 pump. Clean the pumphead and tubing periodically to prevent chemical buildup. Inspect tubing for wear and replace as needed. Lubricate connections and check for leaks. Refer to the manual for detailed procedures and chemical compatibility guidelines. Perform calibration checks to maintain accuracy. Replace the ReNu pumphead cartridge when flow rates deviate from set points. Always disconnect power before servicing. Follow safety protocols to avoid exposure to chemicals. Routine maintenance extends the pump’s lifespan and ensures precise metering. Consult the manual for specific intervals and recommendations tailored to your application.
7.2 Common Issues and Solutions
Common issues with the Qdos 120 include inaccurate flow rates, tubing wear, and pumphead leaks. To address these, ensure proper calibration and replace worn tubing. For leaks, inspect connections and tighten as needed. If flow rates deviate, check for blockages or air in the system. Refer to the manual for troubleshooting steps. Regularly clean the pumphead and replace the ReNu cartridge when necessary. For chemical compatibility issues, consult the provided guidelines to avoid material degradation. Addressing these issues promptly ensures reliable operation and extends the pump’s lifespan. Always follow safety precautions when performing repairs or replacements.
7.3 Troubleshooting Guidelines
Troubleshooting the Qdos 120 involves identifying and resolving common operational issues. Start by checking for error messages on the display and referring to the manual for interpretations. Common problems include inaccurate flow rates, which may result from incorrect calibration or blockages. Inspect tubing for wear or kinks and replace if necessary. Leaks can often be resolved by tightening connections or replacing worn seals. Ensure the pumphead is clean and free from debris. For connectivity issues, verify Profibus or remote control settings. Always follow safety guidelines when troubleshooting, and consult the manual for detailed diagnostic procedures to restore optimal performance quickly and safely.
Advanced Features and Accessories
The Qdos 120 offers advanced operation modes, including remote control via Profibus and universal relay. Compatible accessories like ReNu pumpheads and Santoprene tubing enhance performance and longevity.
8.1 Advanced Operation Modes
The Qdos 120 supports advanced operation modes, including manual, remote, and Profibus control, offering flexibility for various applications. Remote operation enables precise control from a distance, while Profibus integration allows seamless connectivity with industrial automation systems. These modes ensure accurate and efficient chemical metering, reducing manual intervention and enhancing process consistency. The pump’s advanced features are designed to optimize performance in demanding environments, providing users with reliable and adaptable solutions for their metering needs. This versatility makes the Qdos 120 ideal for industries requiring high-precision dosing and integration with existing control systems.
8.2 Compatible Accessories and Spare Parts
The Qdos 120 is supported by a range of compatible accessories and spare parts, ensuring optimal performance and longevity. Key items include the ReNu pumphead, available as a spare, and Santoprene tubing with PFPE lubricant for chemical compatibility. Additional accessories such as remote controllers, calibration kits, and mounting brackets are also available. These components are designed to maintain the pump’s precision and durability. Genuine Watson-Marlow parts ensure compatibility and adherence to warranty terms. Users are advised to consult the manual for a comprehensive list of recommended accessories and spare parts to maintain the pump’s operational integrity and performance standards.
Safety Precautions and Compliance
Ensure safe operation by following guidelines in the manual. Avoid immersing the pump in water; wipe with a damp cloth only. Use chemically compatible materials and adhere to safety protocols to prevent damage and ensure regulatory compliance.
9.1 Safety Guidelines for Handling the Pump
Always follow safety guidelines when handling the Watson Marlow Qdos 120 pump. Avoid immersing the pump in water or hosing it down; instead, clean it with a damp cloth. Ensure proper chemical compatibility by referencing the provided material lists. Wear protective gear when handling chemicals or performing maintenance. Keep the pump away from extreme temperatures and ensure it is properly grounded. Regularly inspect tubing and connections for wear or damage. Refer to the manual for detailed safety protocols to prevent accidents and ensure safe operation. Proper handling extends the pump’s lifespan and maintains operational efficiency.
9.2 Regulatory Compliance and Certifications
The Watson Marlow Qdos 120 pump adheres to global regulatory standards, ensuring safe and reliable operation. It holds certifications such as ATEX for explosive environments and FDA compliance for food-grade applications. The pump meets international standards for chemical handling and metering, making it suitable for diverse industries. Its design and materials comply with environmental and safety regulations, ensuring durability and performance. Always verify local regulations and certifications before installation. The Qdos 120’s compliance with industry standards guarantees its suitability for various applications, from water treatment to industrial processes, while maintaining operational safety and environmental responsibility.
The Watson Marlow Qdos 120 pump is a high-performance, versatile solution for precise chemical metering. Its advanced features, including ReNu pumphead technology and a wide flow rate range, make it ideal for various industrial applications. The pump’s durability, accuracy, and compliance with regulatory standards ensure reliable operation. By following the manual’s guidelines, users can optimize performance, maintain safety, and extend the pump’s lifespan. Whether for water treatment, manufacturing, or laboratory use, the Qdos 120 delivers exceptional results, making it a valuable asset for industries requiring accurate and efficient chemical dosing solutions.