Trendnet 18-1106-33 User Manual

7. Detailed Description

7. Detailed Description

MultiTemp III regulates temperature by balancing the effects
of constant cooling and controlled pulses of heating. 
Constant cooling is provided by a built-in unit that includes a
compressor, an air cooled liquifier and an evaporator (a coo-
ling coil as heat exchanger) located in the chamber. This coo-
ling unit operates at temperatures up to 68.0 °C. Beyond this
temperature, the compressor automatically switches off.
Heating is provided by pulses of power at a frequency esta-
blished by the set working temperature. 
This type of control achieves an optimal balance between
cooling and heating and maintains the liquid temperature
constant at any pre-set level.

See Figure 1 for a description of the front and rear panels
with connection points for cooling liquid and power.

The five digit numeric display shows either the actual opera-
ting temperature, error messages or the set temperature. After
selecting mode or setting temperature, the display automati-
cally switches back to the actual temperature after approxi-
mately 10 seconds.

In the “actual temperature” mode, a constantly lit dot in the
left digit position indicates that the heater is working to
reach the set temperature. A flashing dot indicates that the
liquid in the bath has reached this working temperature.

The control light is lit only when the compressor is in
operation.

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