ESAB Caddyt Arc 150i Service Manual page 47

9. Connect the 24 V DC output of the SST 1 to terminals C1 and C2 of power board
15AP1.
Circuit connections and measuring points for soft starting
10. Switch on the machine and set it to MMA mode.
11. Check that the DC voltage across smoothing capacitor 15C1 is 22--24 V.
12. Check that the DC voltage at the welding terminals is 7--8 V.
13. If all the measurements are as described above, reconnect the wires to restore the
power source to normal operation mode and make a test weld.
ct27f4soft
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S0740 800 161/E061205/P66