Operating Instruction For Plasma Cutter - Delixi LGK-ID IGBT User Manual

VI. Preparation and Operation of Cutting
6.1 Preparation for plasma cutter.
1) Ensure cutter to be with reliable grounding.
2) Ensure connector to be with good connection.
3) Ensure voltage to be appropriate.
4) Ensure input cable and gas bottle to be without corrosion and damage.

6.2 Operating instruction for plasma cutter

1) On the front panel, turn the power switch to position of "ON". Indicator lamp for power will be on and
cooling fan is operating.
2) Turn on air valve or switch for controlling air and set the pressure and flow to rated value (refer to flow
table).
3) Press switch on cutting torch to activate solenoid valve. You will hear sound of spark discharging caused by
high frequency and see gas flow out of cutting torch. Do not aim to self or other personnel to prevent injury.
(Nozzle of cutting torch will inject plasma arc for cutter with pilot arc).
4) Select appropriate cutting current according to thickness and technology requirement of work piece.
5) Maintain distance between nozzle and work piece at 1 to 2 mm. Press control switch on cutting torch, and
then there is high frequency discharging between nozzle and work piece. The sparks caused by high
frequency arc will disappear after arc-starting. Operator may cut work piece at this time.
Plasma cutting requires coordination between cutting current and air pressure to achieve optimum cutting
performance and quality therefore adjust air pressure and flow repeat to achieve optimum cutting performance.
Larger flow may enhance cooling effect and cause not arc or unstable arcing, however, smaller flow may cause
overheating of nozzle and electrode to make them burn out.
Do not insert or draw cables or connectors while cutter is in operation, otherwise it may be harmful for personnel
safety and damage machine. Cut off power first if it is necessary to do this.
VI. Preparation and Operation of Cutting
Caution
Warning
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