Selco GENESIS 145, Руководство по ремонту

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35
Fault Possible problem Suggestions
The machine will not switch on 1. Faulty power supply cable or switch
. Exploded varistor
3. Fuses
If the generator is connected to the
30Vac single-phase mains but this vol-
tage is not found between input terminals
M1/1
M1/, check the input switch,
the terminal strip connections and the sup-
ply cable.
If the varistor is found to have exploded
when the case is opened, replace the filter
board 15.14.43 and any other parts dama-
ged by the overvoltage.
Check fuse F1 according to the procedure
on page 3.
No voltage present on the DC LINK 1. The rectified 35Vdc voltage is not pre-
sent
Check the welder power supply and the sin-
gle-phase rectifier bridge according to the
procedure illustrated on page 5.
The green and yellow LEDs lighten. 1 Switching feeder in overload If the switching feeder is in overload some
part of the welding machine doesn’t work in
correct mode.
1. Disconnect CN6 in input filter board
15.14.43 (in this way the fan isn’t supply).
If the fault persist the afn works correctly,
otherwise change the fan.
. Disconnect the front panel. If the fault
persist, the front panel works correctly, othe-
rwise change the front panel.
3. Disconnect from connector CN8 on input
filter 15.14.43 the wire number 4 and the
wire number 5 (+18Vdc and +4Vdc). If
the fault persist change the PC board num-
ber 15.14.44 otherwise 15.14.43.
Connector CN8 on the input filter PC board
+18Vdc
+24Vdc