Plasma cutting machine as a precision industrial machinery and equipment, in the use of the process may appear some faults, common plasma cutting machine faults are mainly power indicator light does not light, the fan does not turn, no airflow spray, press the torch switch machine does not have any response, can not cut, etc., there are many reasons for the failure, and you need to repair according to the cause. In addition to repairing the plasma cutting machine, but also pay attention to its regular overhaul, the following to understand the common plasma cutting machine faults and solutions.


First, the common plasma cutting machine fault book and solutions
Plasma cutting machine is a cutting machine used in the industrial field, it is inevitable that there will be some faults in the use of the process, the need for timely solutions to deal with, the following first for you to introduce the common plasma cutting machine fault phenomena, causes and solutions:

1, open the plasma cutting machine host "power switch", the power indicator does not light up

(1) "Power indicator" is bad: replace the indicator.

(2) 2A fuse is bad: replace the fuse.

(3) no input three-phase 380V voltage: check whether the power supply problem.

(4) Input power supply phase: use a multimeter to check the three-phase power.

(5) bad power switch: replace the switch.

(6) control board or host bad: overhaul.

2, turn on the input power supply, plasma cutting machine fan does not turn, but the power indicator is bright

(1) input three-phase power supply phase: use a multimeter to check the three-phase power supply.

(2) fan blade is stuck by foreign objects: foreign objects can be removed.

(3) fan power plug loose: re-inserted can be.

(4) fan lead broken: overhaul.

(5) Fan damage: overhaul or replacement.

3, turn on the input power, the power indicator light, the fan is normal, but open the "test air" switch, no airflow jet

(1) no input compressed air: overhaul the air source and air supply pipeline.

(2) air filtration pressure reducing valve failure, the pressure gauge indicator value is 0, "insufficient air pressure" indicator light: adjust the pressure reducing valve pressure or replace the pressure reducing valve.

(3) "test air" switch is damaged: replace the switch.

(4) host solenoid valve bad: overhaul or replacement.

(5) Air supply pipe leakage or disconnection: overhaul.

4、Open the "test gas" switch on the panel of the host, there is a gas jet, press the torch switch, the machine does not have any response

(1) The plasma torch switch is bad or the connection line is broken: overhaul or replace.

(2) Bad "cutting" switch on the panel of plasma cutting machine: overhaul or replace.

(3) Bad control board of the main body of the cutting machine: overhaul or replace.

(4) cutting machine for temperature and other reasons in a protective state: wait for the temperature is normal.

(5) water circuit is not working properly, causing low water pressure protection: check the water circuit and water pressure valve.

(6) host control variable or related lines, components are damaged: overhaul.

5, contact can be cut, but non-contact can not be cut, the test non-transfer arc no sparks out of the nozzle

(1) 15A fuse core broken: replacement.

(2) The air pressure on the pressure reducing valve is too high: adjust the pressure.

(3) There are parts damaged in the torch: check and replace.

(4) torch moisture, compressed air in the water is too high: drying, add water filtering device.

(5) Arc lead wire broken: replace.

(6) Damaged torch: replace.

6, press the plasma torch switch, the nozzle in the air flow, but the "high grade" and "low grade" can not be cut

(1) input power supply phase: overhaul.

(2) air pressure is less than 0.45Mpa: adjust the pressure reducing valve pressure.

(3) Input air flow is too small: ensure that 0.3m3/min.

(4) Poor contact between cutting ground and workpiece: re-clamp or replace.

(5) Electrode nozzle or other parts in the torch are damaged: replace with new parts.

(6) Incorrect cutting method: put the nozzle and workpiece correctly.

(7) Plasma cutting machine torch cable breakage: replacement or reconnection.

(8) The host in the "spark discharger" spacing is too large or short-circuit: the distance to ensure that about 0.5mm.

(9) part of the host component damage, such as: pressure controller, etc.: overhaul or replacement.

(10) Damage to the control board in the host: overhaul or replacement.

(11) Damage to plasma cutting torch: replace.