Chapter 4

Troubleshooting

Refer to the TRACE operations manual, Chapter 4, Gases and Controls, for leak test suggestions and the necessary hardware required to pressure check a plumbing system.

Table 4-1.Leak Testing for Valves

Symptom

Cause

Remedy

Valve leaking between ports

Defective rotor

Replace rotor or valve

 

 

 

Valve leaking around rotor

Valve rotor not seating

Tighten rotor

 

properly

 

 

Rotor Defective

Replace Rotor in valve

 

 

 

Leaking out valve ports

Ferrule not seating

Replace ferrule

 

 

 

Valve Switching

Valco valves contain a rotor that is turned by the actuator. This rotor channels the gas between the various ports of the valve. If the rotor is not being switched properly, a flow path may be partially or fully blocked, or leaks may occur between valve ports.

Each valve contains a mechanical stop that should reach an extreme when the valve is rotated in the clockwise or counterclockwise direction. Close inspection of the valve will indicate if the valve is being switched to its limits, Figure 2-4. Actuator pressure should be 420 Kpa (60psig) to 630 Kpa (90 psig).

Table 4-2.Causes and Remedies for Improper Valve Switching

Cause

Remedy

Low actuator line pressure

Increase line pressure

 

 

Solenoid not actuating

Verify timed event is set correctly

 

Check voltage at solenoid

 

Replace defective solenoid

 

 

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Operating Manual

Page 44
Image 44
Valco electronic Valve Oven manual Valve Switching, Symptom Cause Remedy

Valve Oven specifications

The Valco Electronic Valve Oven is a cutting-edge solution designed for laboratories and research facilities that require precise temperature control and uniform heating for their valve testing applications. This sophisticated piece of equipment showcases a unique combination of advanced technology and user-friendly features, making it an essential tool in various industrial and scientific settings.

One of the standout features of the Valco Electronic Valve Oven is its ability to maintain a stable temperature across a wide range, typically from ambient temperatures up to 300 degrees Celsius. This is critical for applications that demand consistent results and reliability. The oven boasts an electronic temperature control system that allows users to program and monitor temperature settings accurately, ensuring optimal performance and enhanced reproducibility in experimental results.

The design of the Valco Electronic Valve Oven incorporates high-quality materials that provide not only durability but also excellent thermal insulation. This ensures that the internal temperature remains steady while minimizing energy consumption. The oven's compact and ergonomic design allows for easy integration into any laboratory environment without occupying excessive space.

Another essential characteristic of the Valco Electronic Valve Oven is its versatility. It can accommodate various types of valves, making it an ideal choice for different applications, including gas chromatography, liquid chromatography, and other analytical techniques. The adjustable racks inside the oven ensure that users can configure the space according to their specific needs, facilitating optimal valve placement and operation.

Moreover, the oven is equipped with a digital display that provides real-time feedback on temperature settings and conditions inside the chamber. This allows for easy monitoring and adjustment. Additionally, the unit is designed with user safety in mind, featuring built-in over-temperature protection and alarms to alert operators of any potential issues.

The Valco Electronic Valve Oven exemplifies technological advancement in laboratory equipment, combining precision, efficiency, and user convenience. Its robust design and advanced features make it an indispensable tool for researchers and professionals who rely on accurate and dependable valve testing. By investing in the Valco Electronic Valve Oven, users can ensure they achieve the highest standards in their analytical procedures.