Xylem IM224 R03 Hydrovar Variable Speed Control HV, 2HP-15HP Version 0307 - Manual (Page 4)

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
1a 1b 1c
Motor
L1
L2/N
U W
V
DC –
DC +
L1 N U V W