Service manual

Edition 101222
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s1Cad160
As shown, there is 0,2 gas pre--flow delay. The power source is kept on until the
motor is running.
AP2:2L. Electromagnetic valve
The electromagnetic valve control works in a specific mode.
As shown on the diagram the first 0,2 s coil of the valve is supplied from 24 volts
d.c. Then the generator starts running, providing 50%, 20kHz, 24V amplitude
supply of the gas welding. In result the drawn power is reduced down to1/4 of the
rated power, but the valve due to its relay--type characteristics is kept open.