Welbilt MERRYCHEF conneX Service & Repair Manual page 64

5 Service information
10. To recalibrate, promptly access 'Temperature Calibration' in the Service Settings
11. Enter the temperature on the keypad as displayed on the calibrated digital thermometer and press the enter.
12. The 'COMP:' temperature should now read the same as the entry.
13. Monitor the 'RAW' oven temperature and compare to the calibrated digital thermometer. Repeat steps 11 & 12 if the
calibration is requires further adjustment.
14. Once the calibrated digital thermometer reading is in alignment with the RAW temperature, select the green check
mark at the bottom of the screen and then pass on the test complete screen.
15. Repeat the calibration check, points 5 to 9. Retesting to check that the cavity temperature reading is now within the
recommended guidelines.
If the temperature reading is unstable and not calibrating correctly:
1.
Disconnect and isolate the appliance from the electricity supply and Lock off, see section 2.14 'Safe working when
testing components'.
2. Take protective measures to ensure the power cannot be switched on again.
3. Allow the appliance to cool down.
4. Remove the side and top panels of the casing.
5. Discharge the capacitors and prove dead.
6.
Check the cavity temperature sensor wire and connections.
7. If the wire and connections are correct and in good condition, replace the cavity temperature sensor (see Section
6.17. – Overview - further components).
8. Refit the panels of the casing.
9. Switch ON the appliance and repeat the test procedure as described above.
10. If the temperature is still unstable repeat steps to make safe and replace the IO board (see Section 6.10 Replacing
the IO board).
11. Refit the panels of the casing.
12. Switch ON the appliance and repeat the test procedure as described above.
Merrychef conneX ® service and repair manual
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