Overhauling a Vastex Econored Conveyor Dryer: A Technical Guide

Recently, an individual acquired an old Vastex Econored conveyor dryer through Craigslist for $300. The seller mentioned that the mercury relay in the machine overheated and smoked, prompting them to upgrade to a new model. This article provides a detailed guide on diagnosing and addressing the issues with the Vastex Econored, focusing on upgrading the heat control system and troubleshooting potential electrical problems.

Upgrading the Heat Control System

One of the primary upgrades planned for the dryer is replacing the timer-based heat control with a thermocouple-based electronic controller. This upgrade is expected to provide more accurate and reliable temperature regulation, enhancing the dryer's performance. Here's a step-by-step process for this upgrade:

1. Acquire the Necessary Components:
   • Thermocouple-based electronic controller
   • Appropriate wiring and connectors
   • Installation tools (screwdrivers, wire strippers, etc.)
2. Disconnect the Power Supply: Ensure the machine is unplugged from any power source to avoid electrical hazards during the upgrade.
3. Remove the Existing Timer-Based Controller: Carefully disconnect and remove the old timer-based heat controller from the dryer's control panel.
4. Install the New Thermocouple-Based Controller: Follow the manufacturer's instructions to install the new controller. Connect the thermocouple to the designated input on the controller and secure all wiring connections.
5. Test the New Controller: Reconnect the power supply and test the new controller to ensure it is functioning correctly and regulating the temperature as expected.

Troubleshooting the Smoking Mercury Relay

The issue of the mercury relay overheating and smoking is a significant concern. The likely cause could be a current overload or a poor electrical connection. Here’s how to diagnose and address this problem:

1. Inspect the Wiring: Examine all wiring connections for signs of damage, wear, or poor installation. Replace any damaged wires and ensure all connections are secure.
2. Check the Breaker: The dryer was wired to a 60A breaker, which should have tripped in the event of a short circuit. Since the breaker on the machine itself has failed, replace it and verify that it is functioning correctly.
3. Replace the Mercury Relay: Obtain a new mercury relay compatible with the dryer model. Disconnect the old relay and install the new one, ensuring all connections are tight and secure.
4. Test the System: Power on the dryer and monitor the new relay to ensure it does not overheat or emit smoke. If the problem persists, consult a professional electrician.

Seeking Professional Assistance

While the above steps can address many common issues, electrical repairs can be complex and hazardous. If you are not experienced with electrical work, it is highly recommended to seek professional assistance. An electrician can ensure the repairs are performed safely and effectively, preventing potential hazards such as fires or electrical shocks.

Contacting Vastex for Support

Vastex is known for its excellent customer service and technical support. If you need an owner's manual or further assistance with your Econored dryer, consider contacting Vastex directly. They can provide wiring diagrams, troubleshooting advice, and potentially locate an old manual for your specific dryer model. You can reach out to them via their support email at BCH Technologies. Stay updated by following our tech blog or visit us locally in Greensboro, North Carolina.