Forma Scientific, Inc.________________________________________________Calibration
5-1
Section 5 - Calibration
5.1 Calibration
Calibration of the freezer control system is done from the monitor keypad. Access
to the calibration mode requires entry of the four digit access code.
Note: The access code (1,2,3,4) is assigned at the factory.
To obtain the access code prompt, simultaneously press the UP ARROW key and
the BATTERY %CHARGE key.
Note: The keys must be pressed firmly and at the same time.
When this has been done correctly a "1" will appear in the display window. After
keying in the access code, press ENTER and "CAL" will appear in the display. At this
point, the parameter to be calibrated may be selected by pressing its associated display
function key.
Note: When changing calibration values, pressing the UP or DOWN arrow keys
for more than two seconds will cause the displayed value to increment
automatically.
5.2 Calibrating the Temperature Alarm Monitor Probe
Servicing must be performed by qualified service
personnel only!
The Enviro-Scan Temperature Monitor has been factory calibrated.
The 8500 series freezer must be calibrated when the unit is at the low end of its
operating temperature (-75°C,-86°C). The probe cannot be properly calibrated at
ambient temperatures.
Equipment needed: Accurate remote bulb low temperature thermometer
or thermocouple.