Weldmax WEM221ACDC, Руководство оператора

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221 AC/DC
Ultima modifica/Last Update/Letzte Veraenderung: 23/04/2014 Rev1 pagina 18 di 35
EXPLANATION
Input bridge rectifier .
To check the Input bridge rectifier , carry out the following
measurements with a diode tester:
Should there be a short circuit on one of these measure-
ments, the input bridge rectifier must be replaced.
To check the inverter, carry out the following measure-
ments with a diode tester:
Should there be a short-circuit on one of these measure-
ments or an “OL” instead of a numeric value, the power
board must be replaced.
Make sure the two terminals of the thermal devices are
well inserted in the 8-pin white connector on the power
board 0070.
Rheofore Probe Rheofore Probe Measure
F+ Red D Black “OL”
F− Red D Black 0.5
F+ Black D Red 0.5
F− Bleck D Red “OL”
P
IC
T
U
R
E
3
P
IC
T
U
R
E
4
Red Probe Black Probe Measure
S G >2.00
G S >2.00
P
IC
T
U
R
E
5
IMPUT RECTIFIER
D
F-
F+
D
G
G
G
G
S
S
S