Troubleshooting; Temperature Calibration - Labnet 222DS Instruction Manual

7.0 Troubleshooting

The 222DS Shaking Incubator features built in self-diagnostic procedures which are constantly checking
the operating parameters and performance, as well as functions that are necessary for safe and reliable
operation. An error code is shown on the LCD display if an error occurs.
Sample of Error display:
POWER
E11 This error message appears when something is wrong with motor regulation (PWM regulator,
pulse generator, motor). The shaking incubator is automatically stopped. Call for service.
E12 This error appears when the motor does not reach set RPM in 30 sec. The shaking incubator
is automatically stopped. Call for service.
E13 This error appears when set speed oscillates more than 100 rpm in 2 seconds.
Shaking incubator is automatically stopped. Call for service.
E21 The temperature sensor is not working properly with regards to the heater.
Shaking incubator is automatically stopped. Call for service.
E22 Temperature sensor notices a 5°C higher temperature than set temperature.
Shaking incubator is automatically stopped. Call for service.
E23 Set temperature is not reached in 2 hours. Shaking incubator is automatically stopped.
Call for service.
Should you have a question about the Labnet 222DS Shaking Incubator or required service for the unit,
contact Corning Customer service at 800.492.1110 or 978.442.2200. Do not send a unit for service
without first calling to obtain a repair authorization (RA) number. The unit should be properly packed to
avoid damage. Any damage resulting from improper packaging shall be the responsibility of the user.

8.0 Temperature Calibration

Shaking incubator has a software for temperature re-adjustment. First you have to measure the
temperature in the middle of the chamber, or even better in the sample, for minimum 2 hours. You
have to measure the temperature with a calibrated digital temperature thermometer, with precision
0.1°C or more. After 2 hours or more, read the temperature on thermometer and compare it with
the temperature on display of the shaking incubator. The difference between the temperatures on
thermometer and display is the value, which you enter in the software.
Example 1: Temperature on thermometer is 37.9°C, temperature on display is 37°C.
Difference is 37.9 – 37 = 0.9 This value 0.9, is the value (which you will enter into the software).
Example 2: Temperature on the thermometer is 36.2°C, temperature on display is 37°C.
Difference is 36.2 – 37 = -0.8. This value -0.8, is the value (which you will enter into the software).
Procedure for temperature calibration
1. Press and hold encoder knob for more than 5 seconds. Message "Cor" (Correction) appears on display.
2. Press encoder knob once to enter the value setting procedure and set the value with rotating encoder
counter-clockwise or clockwise (see Example 1 or Example 2). Pay attention to the sign of the value
(plus or minus). When you set the value, press encoder knob again.
3. Press the START/STOP key to finish the temperature re-adjustment.
NOTE: Temperature calibration should only be performed by qualified personnel.
RUN
Err
TEMP
SPEED
E11
TIME
START
Encoder
STOP
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