... , there is an Air Regulator knob, the way how to use will be introduced in the following introduction. About Air Regulator, “5 ... position, “0” is the minmum.Common problems about BGA Welding1,How to regularize BGA reworking machine and choose the suitable curve ... help-welding completely. Please store it in the shady and cool place.3. The cleaning work in BGA weldingSteel mesh is suggested to ...