Agilent Technologies 1290 Infinity User Manual page 9

1
Introduction
Thermostat Operation
heating/cooling module the air reaches the temperature of the Peltier elements
and this thermostatted air is blown underneath the special sample tray where
it is evenly distributed and streams back into the sample tray area. From there
it is again drawn into the thermostat. This "recycle" mode assures a very
efficient cooling/heating of the sample vials.
In cooling mode the opposite side of the Peltier element will become very hot
and to maintain the performance of the elements they have to be cooled down.
This is done with large heat exchangers in the back of the thermostat. Four
fans blow air from left to right through the instrument to remove the heated
air. The fan speed is controlled according to the temperature of the Peltier
elements.
During cooling condensation will appear in the heating/cooling module. The
condensed water will be guided out of the thermostat.
1290 Infinity Thermostat User Manual 9