Chopin Mixolab, Maintenance Manual

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18 Chapter 2 Troubleshooting
Maintenance manual
MM-MIXO-EN Ind. 0
04/2012
Mixolab
2. Fault handling
Switch off the power supply and disconnect the power cable before
removing covers.
Follow safe practice if you need to perform operations on powered
equipment without covers.
A Error messages
ERR No Description Action
See in
Chap.3
ERR 11 "Bowl block T˚ too high!"
Bowl block T˚ > 10% of setpoint in
stable phase
■
Confirm on maintenance screen.
Problem on cooling circuit
- Input water too hot: rectify
- No water a output:
Check hydraulic connection, solenoid valve
operation (using maintenance screen), flow
controller setting.
If the circuit is blocked, find where by dis-
mantling it piece after piece.
■
Wrong temperature information:
- Calibrate bowl temperature measurement.
- Replace temperature sensor if the problem
is not solved.
op. 11-7
op. 11-2
op. 2-2
ERR 12 "Bowl block T˚ too low!"
Bowl block T˚ < 90% of setpoint in
stable phase
■
Confirm on maintenance screen.
■
Wrong temperature information:
- Calibrate bowl temperature measurement.
- Replace temperature sensor if the problem
is not solved.
■
Cooling too important:
- Test the solenoid valve using the
maintenance screen and control its
efficiency on exhaust. If the solenoid valve is
jammed, replace it.
- Check water flow and adjust it if necessary
using the flow controller.
■
Insufficient heating:
- Control the heating circuit
- If necessary, replace the failed resistor(s).
op. 11-7
op. 11-13
op. 2-1