The raw material preheating is a very important step for melamine tableware production. Usually we put the powder in the special box and put in the high-frequency preheating machine to preheat into cake. It can greately improve the product quality. Today Shunhao Factory will share you the operation steps for prehater.

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, we will show you the specific operation steps.

1. Open the preheater electromechanical gate (the power supply is 380V).

2. Turn on the power switch of the preheating machine (the power indicator is on) and warm up for 5-10 minutes.

3. Set the preheater switch to "ON".

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

5. Put the raw material MMC in a special container and press the "High Frequency Start" button. (The heating indicator lights up).

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

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

Attention：Please do switch off the power of the machine during checking or maintenance for safty reason. And keep the side door closed during its running.