Despatch Protocol Controller - Manual (Page 33)

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22. Press the following key sequence: -, -, +. The display now reads SCAL
450.
23. Adjust the simulator to supply a 450
E F signal. Wait for 30 seconds while
the control stabilizes.
24. Press the following key sequence: +, +, -. The display now reads SENS
450.
25. To verify proper calibration, adjust the simulator to supply a 350
E F signal.
Within 30 seconds, the display should stabilize and read SENS 350.
26. Press the Manual key. The display reads [MANUAL]. If the control did
not calibrate properly repeat steps 12 - 25.
27. Press the Power on pushbutton to de-energize oven.
28. Disconnect AC power to the oven.
29. Remove Protocol controller to expose thermocouple inputs terminals.
30. Disconnect the two pieces of type J thermocouple lead wire connected to
the Control T/C and Hi-limit T/C terminals.
31. Re-connect control and Hi-Limit thermocouples to the controller
thermocouple terminals (Control T/C, and Hi-limit T/C).
32. Re-install the Protocol controller onto the oven.
33. Re-connect AC power to the oven.
34. Press the Power on pushbutton to energize oven.
35. Press the Tune key. The display reads [TUNE ].
36. Reset any tune mode parameters that were changed in step 12 to perform
calibration (examples: DEG = F and CZO = 0.0).
37. When changes have been completed, press the Manual key. The display
reads [MANUAL ].
The calibration procedure is complete.