High frequency inspection and high frequency machine maintenance manual

1. Check the water filter regularly;
2. If there is dust on the machine, it is used to dry the compressed air and blow the machine carefully, but the main power must be turned off;
Trouble: Before checking, be sure to turn off the main power supply, because there are several thousand volts to tens of thousands of volts in the machine.

Phenomenon 1: common red light (overload light) 
the reason:
A) The lower mold insulation is damaged.
B) There are dirt, dust and moisture in the working objects, vibrating cylinder or upper and lower molds that need to be cleaned.
C) The horizontal position of the upper and lower molds of the high-frequency machine is bad.
D) There is no insulation on the upper and lower molds, but directly touch together.
E) The input power of the high frequency machine is too high.
F) The high-frequency machine vacuum tube is damaged or loose.
G) The over-power protection electronic board is damaged. The overcurrent protection board is the one with three main electrical appliances.
H) The coherent of the high-frequency machine is too large and the output is too high.
I) The work object is too large and exceeds the rated output of the same machine.
J) The temperature control part is faulty.
K) The high-voltage capacitor is damaged.
L) The insulation column (upper template) of the high-frequency machine is damaged.

Phenomenon 2: When the high cycle output, the main power is disconnected or the fuse is burned
the reason: 
A) The vacuum tube is faulty. B) Transformer failure.
C) The high voltage rectifier board is faulty. D) The three-phase magnetic switch is damaged.
E) Short circuit of high voltage line. F) The heating plate is faulty.

Phenomenon 3: No output
Reason: A) Poor contact of the switch. B) Line failure. C) The vacuum tube is faulty.

Phenomenon 4: Bad work
the reason: 
A) Poor adjustment. B) Mold problem.
C) There is a problem with the plastic parts (work items). D) The insulation is too thick and the insulation is too high.
Note: When the mold is pressed down and touches the lower mold, the grounding copper sheet must be pressed against the lower fixing plate, and the round copper sheet can be slightly deformed. If the grounding copper sheet is not adjusted properly, this machine will not work stably. When replacing the molds of different heights, the grounding copper sheet needs to be adjusted again.

High frequency inspection and high frequency machine maintenance manual


Technical guide

Customer Q&A



HW-750 PLA degradable cup lid bowl machine (YASKAWA Yaskawa s

HW-1300 HDPE plastic turnover tray thick film blister machine

HW-1000 small layout automatic PP lunch box vacuum thermoform

HW-1220 new Siemens PLC computer controlled automatic vacuum

HW-520 automatic positive and negative pressure thermoforming

HW-850 Automatic Positive and Negative Pressure Four-Station

HW-850 Automatic Positive and Negative Pressure Three-Station

Product Consultation

We provide one-stop service of design, materials, molds, machines, and after-sales.