1. The power switch is turned on, the indicator is not on, the fan does not turn, and there is no reaction in the switch of the welding gun.

1. Whether external power supply is normal;

2. Whether the power cord is disconnected and whether the connector is good;

3. The power switch is damaged.

solve:

1. Check the external 220V/AC voltage;

2. Check the joint;

3. Replace.

Second, the arc welding machine and electrical source switch is turned on, the fan does not turn or stops, and there is no response according to the welding gun switch

1. The power switch is not plugged in the bottom plate.

氩弧焊机突然出故障,怎么排除?

2. Excessive or low power supply voltage causes overvoltage protection;

3. The power supply input cable is too thin and too long, causing the voltage instability, causing overvoltage protection;

4. Mainboard main circuit 24V/30A relay is poorly sucks, and the resistance value of demagnetic resistance or thermistor resistance becomes larger;

5. The upper board auxiliary power supply is damaged without DC24V output;

6. Continuous switching during the throwing time causes the starting resistance to overheat.

1. Check the plug -in plug;

2. Check whether the voltage is connected to 380V, or the power grid voltage is too low auxiliary power supply;

3. Bold power cable;

4. Check the replacement;

5. Maintenance and replacement;

6. Tort for 3 minutes.

Third, the boot indicator is on, the fan is turned, and there is no response according to the welding torch switch

1. Welding torch switch or control line is loose;

2. Poor contact with aviation sockets or loose connections;

3. Whether the bottom plate rectifier filter is normal? Whether the main circuit relay is inhaled and whether there is DC307V output.

4. Auxiliary power is bad.

5. Silicon bridge open road.

6. Check the replacement;

Fourth, the boot is normal, the switch of the welding gun is gas, the red light is not bright, and there is no high frequency

(First check the output end of the welding machine, whether there is a DC55V air load voltage. If there is DC55V, you can contact the arc, and you should check the high -frequency arc part.)

First check the output terminal of the arc welding machine, unplug the high -frequency control line to see, whether there is a DC55V vacuum voltage. If there is DC55V, if you insert it, you should check the high -frequency arc part:

1. Whether the upper plate rising transformer is loosened, whether the transformer is opened;

2. Whether the high -voltage silicon particles and high -voltage output capacitors 102/10K are broken;

3. Whether the high -voltage discharge mouth is sticky, excessive gap or severe surface oxidation;

4. Whether the high -frequency arc attractor or connecting line is loose;

5. Whether the high -frequency control relay is damaged and whether the power supply circuit is normal;

6. Whether the switch with the ARC/TIG conversion switch is good;

If there is no DC55V output, check whether the inverter circuit works normally:

① The control module has no drive signal output;

② Drive conversion, whether the driving module works normally;

③ The field tube and main variable and main current connection cable are loose.

1. Check the replacement;

2. Adjust replacement;

5. The booting indicator of the arc welding machine is bright, the fan turns, the switch is turned out by the welding gun, and the red light is on

1. Overcurrent protection at work;

2. It may be the failure of the inverter circuit and the arc.

a. If the red light is not bright, it is a short -circuit of the arc transformer, or it may be a supercharged arc, and the diode breakdown.

b. If the red light is on, there is a problem with the inverter circuit. Turn off and then unplug the middle plate transformer. Power supply plug (near the fan VH-07) Put the boot on the welding gun.

c. The red light light is damaged by the effect tube of the field on the inverter plate. At the same time, the driver’s module should be damaged.

d. The red light is not bright, and it is a short -circuit of the middle plate transformer or a rectifier. The transformer can use the bridge to detect its inductance and Q value. C = 0.9-1.6mh q> 35 The rectification tube is checked one by one.

1. After 5 minutes of shutdown, re -turn it on;

2. Stop working for 5 minutes;

3. A replacement;

B check replacement;

D is replaced by too small.

6. The boot is normal and can start arc, but the solder joints are black

1. Check whether the solenoid valve and the trachea are blocked by foreign objects;

2. Damage of solenoid valves;

3. Damage to the power supply control circuit of the solenoid valve;

4. Disassemble the welded torch, gas and electrical connector, and press the welding torch switch.

5. Poor diversion capacity of welded torch cables, scattered arcs, arcs, etc.;

6. Poor quality and impure tungsten needle.

1. Clean up

2. Replace

3. Check the replacement

7. The welding current of the arc welding machine is unstable, is not controlled, and the time is large

1. Poor contact or damage of the potentiometer;

2. Leaves filter capacitor leakage or damage;

3. Place the remote control switch in the remote control position;

4. Input cables or output cables are too long too detailed caused by current instability;

5. Poor contact or loosening of the connection.

2. Place in the correct position;

3. Increase the cross section of the wire;

8. Put up and stick

1. Short -circuit of rectifier silicon bridge;

2. Loose a short circuit of the power cord.

1. Replace;

2. Insert it.

Nine, press the welding torch switch, the air valve is turned off immediately, there is no delay, the seal wave is slow

The air valve control relay power supply diode IN4004 short circuit, check and replace.

10. Press the welding torch switch, there is a high -frequency discharge sound, no welding output

1. Poor contact or loosening of the welded floor line;

2. The internal output end of the ground line and the gas electrical connector is loosen or connected to the middle board.

Eleven, the arc welding machine is not good

1. The gap between the discharge mouth is too large, too small or the surface oxidation;

2. The capacity of high -voltage output capacitance is low, and high -voltage has a short circuit;

3. Increasing the arc income is incompatible or inter -turbone leakage;

4, poor ingot or tungsten needle quality;

5. The welding torch has a loose phenomenon.

1. Clean adjustment;

2. Check the replacement.

12. Normal boot, turn on the red light as soon as you work

1. Against the feed circuit open route;

2. Poor contact between the transmission circuit or power device of the main current, which causes overcurrent protection.

1. Check the connection;

13. There are high -frequency booting

1. Hand -switch controls optocoupler PC817 (or triode 8050) damage;

2. Short -circuit of welding torch switch or control line.

2. Check.

Fourteenth, the medium and high frequencies of welding of the arc welding machine continued

1. High -frequency control relay damage;

2. The output voltage has peak interference;

3. High -frequency self -locking;

1. Replace.

2. Tighten the feedback and control line.

3. Increase high -frequency transformer absorption and increase the high -frequency relay coil -side capacitors.

15. Press the welding switch of the arc welding machine, the abnormal indicator light is on

1. It may be overheated;

2. It may be the failure of the inverter circuit and the arc.

① The power supply plug (near VH-03 near the fan) is turned off and unplugged the arc transformer. Re-booting the red light is not on, it is a short-circuit between the arc transformer line.

② The red light is on, the failure of the inverter circuit (if it is a dual inverter, turn it off first, and then unplug the power supply of one of the boards on the board (the plug of the VH-07 near the fan), turn on the welding gun The switch is not on, and the red light fails if the inverter is pulled out of the power supply, and the red light is on on the inverter without the power supply.

氩弧焊机突然出故障,怎么排除?

③ Shut off the power supply plug-in with a faulty inverter, unplug the power supply plug-in of the middle plate transformer (VH-07 near the fan), turn on the welded torch, and the red light is light. At the same time, check whether the components on the driver module are damaged.

④ If the red light is not bright, the fault is on the middle plate transformer and rectifier; A. The transformer can measure its inductance and Q value with a bridge. TIG250 L = 1.2-1.6mh Q> 35 TIG400 L = 1.2-2.0mh q> 35 B. The rectifier tube must be checked and replaced one by one.

TIG250, 315P, 400P panel function keys refer to the instructions of the use of the use of the use of the single -key disorder, replace this key position, multiple key position disorders replace the control panel, and other faults refer to the above cases.

氩弧焊机突然出故障,怎么排除?

1. Stop working for 5 minutes;

2. Turn on the shutdown for 5 minutes; replace it.

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4. Check the replacement;

1. Check the replacement;

1. Check the replacement;

3. Check the replacement

2. Check the replacement.

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