LGK-40/63IGBT OPERATOR’S MANUAL
12
Power supply wire cross profile, ground wire cross profile, breaker and fuse should refer
to the diagram below.
Items
LGK-40IGBT
LGK-63IGBT
Power supply wire cross profile
（
mm
2
）
2.5-4
4-6
Ground wire cross profile
（
mm
2
）
2.5-4
4-6
Breaker capacity
（
A
）
20
30
Fuse capacity
（
A
）
20
30
4. Installation of power wire
Shut off the power switch first. Connect the power input wire of cutter back panel to
distribution box which meets the parameters in the diagram above. The green-yellow wire is
protection ground wire, which must be connected to earth reliably. Earth connecting method
should follow state standard.
5. Connection of compressed gas and the usage of air filter regulator
Hoop
Gas pressure
regulating valve
Inlet pipe
Draining water tip
The compressed gas should meet the requirement mentioned in point “Plasma gas
conditions”. Connect the gas pipe with the gas inlet of air filter on the back panel and hoop it
tightly.
The usage of air filter regulator is as follows. When it is to adjust pressure, lift up air
pressure regulating valve, and rotate it. Left rotation aims to reduce outlet gas pressure, right
rotation aims to increase outlet gas pressure. After the gas pressure is adjusted properly, press
down regulating valve.
The air filter regulator should be checked periodically. If the water level reaches two-thirds
of filter glass, it must be drained, or this will affect incision quality. The gas supply valve should
be closed during water draining, and Check air function is selected on panel. When the indicated
valve of gas pressure meter is zero, water will drain out from drainage mouth automatically.
6. Connection of cutting torch
Firstly connect the torch cable connector M16 nut with the copper nozzle marked with Air &
Power Output on the front panel, and screw down the nut, then put on insulation sleeve; Connect
the torch control plug to the outlet marked with Control on the front panel and screw down the
nut.
Summary of Contents for LGK-40/63IGBT
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