LGK-100.160.200IGBT OPERATOR’S MANUAL
17
be pressed all the time during cutting. After loosening, the cutting comes to stop. At 4-Step point,
press the torch switch and then loosen it, and cutting can start. User can make selection according to
his operation habit.
g) Checking the panel indicator lamps. The indicator lamps status, under which cutting can be
operated, is shown as following diagram.
Indicator
Lamp
Power Cutting
Gas
pressure
Water
pressure
Overheated Supply
abnormity
Status ON OFF ON ON OFF OFF
Notes:
there is no water pressure indicator lamp for LGK-100, and the water pressure lamp will
not be ON when gas-cooled torch is applied in LGK-160/200 cutter.
h)Keep the torch nozzle 2 to 5mm away from workpiece. The axis line of nozzle should be
perpendicular to workpiece, and starts cutting from the edge of workpiece. When the plate thickness
is
≤
12mm, a hole can be drilled on workpiece and then cutting can be started around the hole. The
cutting torch should inclined to one side a little during drilling a hole on workpiece, so that the
molten metal can be blown away easily. To drill a hole by use of plasma arc is not proposed,
because this will damage nozzle easily, it is better to drill a hole in arc striking point first, then
strikes arc on the edge of hole. Press down torch switch, compressed gas sprays out from nozzle,
and cutting indicating lamp is ON. After gas pre-flows for 1 to 2 seconds, high frequency is
generated, arc is struck, and cutting begins by moving torch.
i)When the control switch of operation method on front panel is at 2-Step point, press down the
torch switch and cutting starts after arc striking. After loosening the switch, there is no voltage
output, and cutting ends, and compressed gas stops supply in 9 seconds. When it is at 4-Step point,
press down the switch and loosen it, and cutting starts after arc striking automatically. Press the
switch again or press it till the arc is off, then there is no voltage output, cutting ends, and
compressed gas stops supply in 9 seconds.
Maintenance
The cutter cannot be operated and placed in strong sunshine.
2. The cutter cannot be operated and placed in moist environment.
3. The vent hole should not be covered when the cutter is operated.
4. The cutter should be operated and placed in drafty environment.
5. The cutter casing should be opened once a year at least. Clean up the dust and metal scraps
inside the machine by use of compressed gas.
6. Check regularly if the cable insulation cover is damaged. If there is any damage, repair it or
change it.
7. Check regularly if the electric connection is loose and then tighten it.
8. Drain out regularly the water and impurities from filtering reducing valve.
Notes: When maintaining the cutter, professional electrician is required to dismantle
the power wire from distribution box and open the machine casing.
Cutting technology instruction
1.
The related main technical parameters
z
Cutting material and thickness
The selection of cutting technical parameters is based on the cutting material and thickness.
If the material is thick, it should adopt large current and nozzle with big aperture. For different
Содержание LGK-100GBT
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