Component Description, Lka 150 - ESAB LKA 150 Service Manual

COMPONENT DESCRIPTION, LKA 150

AP1 Circuit board with control electronics: see the diagram on page 6 and description
on page 7.
C1
Capacitor 0.1µF, 400 VDC, transient protection.
C2
Capacitor 0.1µF, 400 VDC, transient protection.
L1
Inductor.
M1
Wire feeder motor.
QF1 Switch, 8−way, for 7−step and Off (main On/Off switch) adjustment of the welding
current.
For the Australian market the main On/Off part of the switch is 2−pole.
SB1
Welding torch trigger switch.
ST1 Thermal overload cutout, for protection against overload, fitted in the winding of
main transformer TM1.
The switch operates (opens) at a temperature of 130
ST2 Thermal overload cutout, for protection against overload, fitted on the diode bridge
cooling fins (VC1). It operates (breaks) at 110
TM1
Main transformer
V1
LED, yellow.
Lights if thermal overload cutouts ST1 or ST2 operate as a result of high
temperature.
VC1
Diode bridge.
XS1
2−pole connector.
XS2
5−pole connector.
XS3
2−pole connector.
XS4
Connector, 2−pole.
XT1
Mains terminal block, 2−pole.
XT2
Terminals, welding current, positive and negative
clka0de1
C.
°
C.
°
− 4 −