ESAB EMP 215ic, Руководство по обслуживанию

Страница: 58 / 102

ESAB EMS215IC/EMP215IC
6-12 TROUBLESHOOTING Manual 0463 413 001
An additional Pre Power-up check for the Output Diodes D66 – D69 should be performed. Using a meter set
in the DIODE TEST setting do the following:
1 With positive meter lead on – OUTPUT WELD terminal and with negative meter lead on + WELD OUT-
PUT terminal, check for forward biased diode drop reading.
2 With positive meter lead on + OUTPUT WELD terminal and with negative meter lead on - WELD OUTPUT
terminal, check for reverse biased diode drop reading.
If an open or short is found, Replace OUTPUT DIODE PCB4.
The following image shows the previous steps listed. In the oval you will see the step number and below that
the meter reading you should see.
1
0.3 - 0.7 VDC
2
Open /Infinity
+
-
-
+
This concludes the Pre Power-up Checks.