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AC Power Loss
Temperature Calibration
Thermo Scientific
The operating microprocessor possesses a non-volatile memory. Upon
resumption or recovery from an AC power loss, the following will be
noted:
•
All readouts will flash until any key is pressed.
•
If unit was shaking at the time of power failure, it will resume
operation at the speed and timer settings that were entered at the time
that AC power failed.
1. Fill a 250-ml Erlenmeyer flask with approximately 100 ml of water and
position it at the approximate geometric center of the shaking
platform.
2. Install a thermocouple inside the flask with the thermocouple junction
in direct contact with the water.
3. Adjust the safety thermostat to its maximum clockwise position.
4. Using the up and down keys, adjust the set point temperature to read
37°C or any other desired set point.
5. Allow sufficient time for chamber temperature to stabilize.
6. Press HEAT ON button and, while continuing to hold, press and
release the HEAT OFF button. Now, release the HEAT ON button.
7. The decimal point should now be flashing indicating that the unit is in
the temperature calibration mode.
8. Use the up and down arrow keys to adjust the temperature on LED
readout to match the temperature reading on the thermocouple meter.
9. Press the HEAT OFF button. The beeper will sound indicating that
the new calibration value just entered is now stored in the nonvolatile
memory of the temperature controller.
Note It is important to press HEAT OFF button to exit Calibration mode.
10. Press HEAT ON button twice to complete return to normal operating
mode.
Section 5
Operation
MaxQ 7000
5-7
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