Troubleshooting Basket Speed Errors on Single-motor Washer-extractors
PELLERIN MILNOR CORPORATION
Figure 1: Troubleshooting Speed Errors
Process Chart Legend
.
Y. Yes
N. No
1. Machine does not run at desired speed.
2. Section 1: Is desired speed programmed in wash formula?
A. Edit wash formula.
3. Section 2: Are inverter parameters correct for this machine model?
B. Contact Milnor, and correct inverter parameters.
4. Section 3: Does digital counts value match desired speed?
C. Contact Milnor for updated software.
5. Section 4: Does D-to-A output voltage at D-to-A board match desired speed?
D. Replace D-to-A board.
6. Section 4: Does D-to-A voltage at inverter match desired speed?
E. Check wiring from D-to-A board to inverter.
7. Section 5.1: Does inverter output frequency match input voltage?
F. Review inverter parameters, and contact Milnor Customer Service.
8. Section 5.2: Is inverter output amperage within normal limits?
G. Contact Milnor Customer Service before repairing or replacing inverter.
9. Section 6: Does motor test within normal limits?
H. Contact Milnor Customer Service before repairing or replacing motor.
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