故障：焊接电流小调不大

Failure: small welding current minor

 

开机正常LED灯亮 24V辅电正常 直流300V正常 焊接的时候电流比较小调不大 板子上的两个LED灯亮，

Open the normal LED light 24V auxiliary power normal DC 300V normal welding, the minimum current of the minimum current is not the two LED lights on the board.

 

更换3140无果，测量电位器两边电压正常七八V左右，后经测量电位器中间脚通往小立板的电阻阻值变大造成信号传递不上去

The replacement is 3140 without fruit. The voltage on both sides of the potentiometer is normal about seven or eight V. After measuring the resistance of the potentiometer, the intermediate foot to the small vertical plate increases, resulting in the signal transmission is not up.

 

故障：焊接电流小调不大

Failure: small welding current minor

 

开机测量空载正常电流调不大测量主电五百多V正常，空载八十V正常，数显表大小显示正常，测量Z24对地电压有20多V输出有，正常应该有14V 正常。一组一组机芯测试电流也上不来，经检查电流电位器通到小立板的可调电阻太大，更换小 正常解决。

No load or normal current is measured. The main electrical more than 500 V is normal, and the normal load is eighty V. The size of the digital display is normal. The Z24 has more than 20 V output to the earth voltage, and normal 14V should be normal. The test current of a group of one group is also not coming up. The adjustable resistance of the current potentiometer to the small plate is too large to be replaced by a small normal solution.

 

 

 

故障：风机声音大，电流不稳定

Fault: the fan is loud and the current is unstable

 

开机后风扇声音很大 焊接电流不稳定 检查后发现风机 一个叶片缺失 更换新风机后声音 正常 快速接头已经损坏 更换后焊接电流稳定 。很多厂家直接把分流器固定在快插上很容易造成分流器发热，损坏分流器烧坏分流器上面的检测线，这个是需要注意的，线子烧坏后也会造成电流不受控

After starting the fan, the voice is very large, and the welding current is unstable. After checking, it is found that a fan blade is missing. After replacing the fresh air blower, the sound is normal, the fast connector has been damaged, and the welding current is stable after replacement. Many manufacturers directly fix the shunt to fast plug. It is very easy to cause the shunt heating, damage the shunt and burn out the detection line on the top of the distributor. This is something we need to pay attention to. This will cause the maximum current uncontrolled after the burn out.