7Figure 2-1: Installation of the reducer valve4) Installation of the cutting torchFigure Installation of cutting torch head2-2:2.2 Precautions1) Make sure the place to install the machine can bear the weight of the cutting machine.2) Do not install the machine at places where water droplet splash may be produced, such asnear water pipes.3) Cutting should be carried out in dry environment with humidity of 90% or less.4) The temperature of the working environment should be between -10℃ and 40℃.5) Avoid cutting in the open air unless sheltered from sunlight and rain. Keep it dry at all timesand do not place it on wet ground or in puddles.6) Avoid cutting in dusty area or environment with corrosive chemical gas.7) Do not carry out cutting with the cutting machine placed on a platform with a pitch greaterthan 10°.3) Installation and operation of the reducer valveSteps for reducer setting are as follows: start the gas flow; lift the pressure control knob upward;adjust the gas pressure to the desired value by rotating the knob (rotate to “+” direction toincrease gas pressure; rotate to “-” direction to reduce gas pressure); press down the pressurecontrol knob to get the knob locked. Drain the water by turning the drain knob when there is toomuch water in the filter cup.-Screw the electrode into the torch head.-Screw the nozzle into the torch head, andtighten it.-Screw the protective sleeve into the torchhead, and tighten it.-Fix the bracket on the torch head, andtighten the fastening screw.Pressure control knobConnecting framePressure gaugeGas hoseFilter cupDrain knobTorch headElectrodeNozzleProtective sleeveBracketTorch handle