Eppendorf New Brunswick Excella E-24 Shaker - Manual (Page 19)

Operation
New Brunswick ™ Excella ® E-24 Shaker
English (EN)
19
5.5 Alarm functions
In addition to visual alarm, the Excella E-24 has an audible alarm that is activated at predetermined times.
It can be deactivated by using the MUTE function (see
Deactivating on p. 19).
5.5.1 Deactivating
1. Press the SELECT key until the MUTE indicator illuminates.
2. Press the or key to display ON, then press the SELECT key.
5.5.2 Reactivating
To reactivate the audible alarm:
1. Press the SELECT key until the MUTE indicator illuminates.
2. Press the or key to display OFF, then press the SELECT key.
5.6 Temperature setpoint
Press the SELECT key until the function °C indicator illuminates. The temperature can be set from 5 °C
above ambient temperature to 60 °C (non-refrigerated units) or from 7 °C to 60 °C (refrigerated units).
Increasing or decreasing the setpoint is accomplished with the or key.
During operation, if the temperature of the chamber is more than 1.0 °C higher or lower than the
temperature setpoint, an alarm is triggered. This alarm consists of a flashing °C indicator and audible beep.
The alarm will automatically deactivate as the incubator shaker achieves the set temperature.
5.7 Temperature offset calibration
The temperature probe and the temperature controller are calibrated together at the factory. The
temperature probe measures the temperature of the air at the probe’s location, near the heat exchanger
return vent. The controller uses the probe input to adjust air temperature, up or down, to match the
temperature setpoint.
Depending on various conditions within the chamber (flask placement and size, heat produced by growing
organisms, heat losses due to liquid evaporation from flasks, etc.), the display temperature may differ from
temperatures within the flasks themselves.