No Pre-molding or Pre-molding Too Slow

No pre-molding or pre-molding too slow

1. The pre-plastic end travel switch is closed, open the bumper of the travel switch,

2. One-way throttle valve is closed

3. The material temperature is too low, increase the material temperature

4. The pre-plastic solenoid valve is stuck, remove it and clean it.

5. The pre-molding pressure is too low, increase the pre-molding pressure.

6. Foreign matter enters the screw and blocks the screw. Disassemble the screw for cleaning and barrel cleaning

7. The hydraulic motor is broken and the bearing is stuck.