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Section 5 Operation (continued)
Page 5-2
5.4 Calibrating the Main Temperature (continued)
After the Offset Calibration Number is established, it can then be
entered into the control. To enter the control, push and hold both UP
and DOWN Arrow Buttons simultaneously for three (3) seconds or
until A1 appears in the Upper Display and Oper appears in the Lower
Display. Then, push the Advance Key repeatedly until i.CA appears in
the Bottom Display and a number value in the Upper Display. This
number value can be changed by using the UP or DOWN Arrow
Buttons. Change the number value to the Offset Calibration Number
established earlier. If it is a negative number, you subtract. If it is a
positive number, you add. After the Offset Calibration Number is
entered, push the Infinite Button repeatedly to exit to Home Page
(Process Temperature Display Top and Set Point Display Bottom).
If an adjustment has been made, allow the unit temperature to stabilize
before verifying the reference thermometer matches the setpoint.
Adjust again, if necessary.
5.5 Setting the Set Over Limit Temperature Control:
To set the Over Temperature Limit Control, perform the following:
• The Over Temperature Limit Control should be initially set to its
maximum position to allow the Main Temperature Controller to
stabilize.
• Set Main Temperature Control to approximately 1˚C above
desired set point and allow stabilizing.
• Turn the Over Temperature Limit Control counter-clockwise until the
Over Temperature Light just activated. Then, slowly turn the knob
clockwise until the light goes out.
• Return the Main Temperature Control back to desired set point.
• This should set the Over Temperature Limit Control approximately
1˚C above Main Temperature Control. If the Over Temperature feature
is being used, it is should be tested annually.
5.6 Loading Procedure: Adequate spacing should be allowed between items
whenever possible. Proper spacing will allow maximum air circulation,
which is necessary for temperature uniformity.