JULABO FP45-HE Refrigerated and Heating Circulators - Manual (Page 25)

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6.2.2. Switching on the Cooling Machine
Switching on:
• Switch on the cooling machine using the switch (1b) .

Control of the cooling machine:
With the mains switch (1b) turned on, the circulator automatically
switches the cooling machine off and on.
• It is switched off, if:
- the actual working temperature is increased by >30 °C (cooling is
not required).
- the heater operates at full power (>800 W) for longer than 5
minutes.
• It is switched on, if:
- cooling is necessary for maintaining the bath temperature.
After switch-off, the cooling machine automatically switches on only
after a delay of 5 minutes for protecting the cooling compressor.

To save energy, turn off the cooling machine with the mains switch
(1b) whenever cooling is not required.