WARPP LGK-40 Instruction Manual - page 6

1.  Connect the output terminal of the compressor and the input terminal (IN) of 

the pressure reducing valve with a gas pipe; there should be closed butt 

joint between the output terminal (OUT) and the copper tube on the back of 

the machine. 

2.  Connect the copper nut on the cutting torch with the integrated electro-gas 

output terminal and clockwise rotate it (to avoid air leakage). The fast plug 

on the ground cable should be connected to the positive output terminal on 

the front panel of the cutting machine and tightened up. 

3.  Connect the switch plug on the cutting torch with the cutting torch switch 

connector on the panel.   

4.  Rotate the electrodes into the cutting torch in proper order. Tighten them 

when they reach the end. Then correctly install the spray nozzle and the 

shielding case onto the designated positions successively. (Attention: the 

machine should be turned down each time the spray nozzle or the electrode 

is replaced or examined.) 

2.3

．Examination 

1.  Whether the cutting machine is grounded according to the standard. 

2.  Whether all the connection points is well contacted. 

3.  Whether the voltage that the power line is connected to is correct. 

4.  Whether there is no abrasion, breakage or bending on the connection cable 

and the gas pipe. 

3. Operation 

1.  Turn on the power switch on the front panel and keep it to “ON”. This time 

the power LED shines and the screen of the gauge outfit displays the preset 

current value. 

2.  Rotate the air pressure knob to the value you want. Open the valve of the 

compressed air. 

3.  Press down the control button on the cutting torch and the electromagnetic 

valve acts. The discharging sound of high frequency arc striking from inside 

the machine can be heard, and at the same time, gas flows out from the 

spray nozzle of the cutting torch.   

4.  Preset the corresponding cutting current according to the thickness of the 

workpiece to be cut.