Service
Manual
9406
30. Motor
30
6
In two cases the machine will be halted without indication:
• Overvoltage in feed.
• Motor and/or motor control overheated.
Motor does not operate when it should
• Check the voltage feed to the motor control unit by:
- Disconnecting XM4 (quick connector)
- Using a voltmeter (AC) to measure between pins XM4:1-2.
Correct value = 220 V (208 - 240 V)
- Using a voltmeter (DC) to measure between XM6:1-4.
Coorrect value = 250-375 V. If not, check fuse
Motor does not operate or operates at wrong speed
• Check against the table below whether the motor is receiving the correct
control code from the speed selector circuit board. Measure at connection
X99:1 - 4 with XM2:1 as reference point.
Speed pin 1 pin 2 pin 3 pin 4
0 Stop 0 V 0 V 0 V 0 V
1 Wash speed, right 0 V 0 V 0 V 24 V
2 Wash speed, left 0 V 0 V 24 V 0 V
3 Distribution 0 V 0 V 24 V 24 V
4 Stop 0 V 24 V 0 V 0 V
5 Reduced wash speed, right 0 V 24 V 0 V 24 V
6 Reduced wash speed, left 0 V 24 V 24 V 0 V
7 Stop 0 V 24 V 24 V 24 V
8 Extraction 8 (HC) 24 V 0 V 0 V 0 V
9 Extraction 1 (LC) 24 V 0 V 0 V 24 V
10 Extraction 2 (LC) 24 V 0 V 24 V 0 V
11 Extraction 3 (LC) 24 V 0 V 24 V 24 V
12 Extraction 4 (HC) 24 V 24 V 0 V 0 V
13 Extraction 5 (HC) 24 V 24 V 0 V 24 V
14 Extraction 6 (HC) 24 V 24 V 24 V 0 V
15 Extraction 7 (HC) 24 V 24 V 24 V 24 V
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