The role of high-frequency preheater in the production of melamine products cannot be underestimated. After being heated by a high-frequency preheater, it has lots of advantages:

• enhance the fluidity of the melamine powder
• shorten the casting time
• eliminate product water lines
• improve the finish of the finished product
• save the amount of melamine powder
• extend the life of the mold

So how to operate the preheating machine?

First, let’s get to know the control panel of the preheater.

Control panel introduction:

A1=CURRENT METER                                    PL1=PILOT LIGHT OF POWER (GREEN)

PB2=HIGH FREQUENCY START                      S2=HIGH VOLTAGE SWITCH

PL2=H.F.PILOT LIGHT (RED)                         PB1=HIGH FREQUENCY STOP

T1=HIGH FREQUENCY TIMER                      NB1=NON-FUSE BREAKER

S1=HIGH VOLTAGE ADJUSTER

Next, Shunhao will take you through the specific operation steps.

1. Open the preheater electromechanical gate, and the power supply is 380V.

2. Turn on the power switch of the preheater, the power indicator is on, and warm up for 5-10 minutes.

3. Set the high frequency switch to "ON".

4. Set "heating time" and "heating temperature".

5. Put the melamine powder in a special container and press the "High Frequency Start" button. The heating indicator will light up, and the processed object will begin to preheat.

6. When the temperature reaches the set value, the high frequency will stop working and the preheater will automatically open.

7. In normal work, if an abnormality is found, it should be shut down and stopped immediately, and reported to relevant personnel for handling.

TIPS：For safety: Please do switch off the power of the machine, during checking or maintenance when needed. And keep the side door closed during its running.