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Guide to diagnostics of EWX11831 electronic controls
2013 TS/DT-mdm FCPD-dp
38/71
599 77 00-82 Rev. 01
How to check three-phase motors
1) Check the connection blocks (wiring) and
for the presence of any protruding/kinked
terminals.
2) Check for the presence of any marks /
residue / water or detergent deposits on the
motor and where these come from.
3) Proceed by checking for any windings
/ earthed parts or parts with poor
earthing insulation. Use a tester with a
minimum capacity of 40 M
: between
each individual terminal and the motor
casing, read
(fig. 10)
4) Proceed by checking each individual
winding according to the following
table
(fig. 11).
MOTOR
MOTOR
TERMINAL
BOARD
TERMINALS
CONTROLLING
ECM
B
1-2
Stator winding
9.10±7%
C
2-3
Stator winding
9.10±7%
D
3-1
Stator winding
9.10±7%
If there are burns on the circuit board,
see page 69
!
S
= stator
Fig. 11