
Commercial Water
Xylem Inc.
PAGE 4
Section B
Troubleshooting the Rectifier and the IGBT Module (using a Multimeter).
Power Supply disconnected!!!
Single Phase Unit HV 2, 3 HP
Rectifier
AC Input
+ DC
– DC
IGBT
– DC
+ DC
1
a
1
b
1
c
Motor
L1
L2/N
V
DC –
DC +
L1 N U V W
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