IF Induction Furnace Startup Procedure

To begin a production cycle safely, follow these essential steps:

1. Check Incoming Power
   • Turn on the high-voltage switch cabinet.
   • Verify that the voltage and current indicators for the three-phase power supply are displaying normal values.
   • Set the power adjustment potentiometer to its lowest position.
2. Power Up the Control System
   • Press the “Control Power” button.
   • After 2–3 seconds, press the “Main Circuit” button.
   • Then press the “Inverter Start” button.
3. Confirm System Readiness
   • Once the power system is running, you should see active readings on the:
     • DC voltmeter
     • Ammeter
     • Frequency meter
     • Power meter
4. Gradually Increase Power
   • Slowly adjust the power knob to reach the required working power.
   • If the system fails to establish the IF current (known as "loss of start"), press the “Inverter Stop” button, wait briefly, and restart the inverter.

IF Induction Furnace Shutdown Procedure

Safe shutdown is just as important as startup. Here's how to do it properly:

1. Standard Stop
   • First, reduce the power knob to the minimum setting.
   • Then press the “Inverter Stop” button.
2. Extended Shutdown
   • For long-term downtime, follow this exact order:
     1. Press “Inverter Stop”
     2. Press the Main Circuit Disconnect
     3. Press the Control Power Disconnect
   • Note: Do not reverse the shutdown order.
3. Cooling System Management
   • After shutdown, the internal cooling water (serving the power supply and capacitor bank) can be turned off.
   • However, the external and internal cooling systems for the furnace body must continue running until the lining temperature drops below 100°C (212°F) to prevent damage.
4. Winter Considerations
   • In cold climates, ensure water does not freeze in the pipelines:
     • Use thermal insulation
     • Drain water after use
     • Add antifreeze (such as glycol) when necessary

Why Proper Operation Matters

Incorrect startup or shutdown of IF induction furnaces can lead to:

• Power system failure
• Damage to capacitors and coils
• Thermal shock to the furnace lining
• Reduced service life of key components

Consistent operating procedures ensure stable performance, reduce maintenance costs, and protect your investment.

Industrial Applications and Expertise

At Luoyang Judian, we specialize in the design and manufacturing of high-performance IF induction furnaces for metal melting and heat treatment. Our furnaces are widely used in:

• Foundries
• Forging plants
• Steel and copper processing industries
• Recycling and metallurgy operations

We provide customized solutions to meet global industry standards and help clients reduce energy consumption while improving output efficiency.

Contact Us for Expert Support

Looking to upgrade or maintain your induction melting system?
Luoyang Judian is your trusted partner in IF induction furnace technology. Contact us today for:

• Technical consultation
• Furnace customization
• After-sales support

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