D I P A N D F L O W C O O L E R S U S E R ’ S M A N U A L
OPERATION
Precautionary Measures
1 Do not operate any of the fridge units without liquid in the circuit. Ensure that the evaporation coil on the Dip Cooler is covered. Ensure that the heat exchanger in the Flow Cooler is full.
2Freezing may occur if there is insufficient circulation or the incorrect liquid is used. While this will not harm the unit some time may pass before the unit can be used again. For this reason there should always be circulation in or around the coil either in the bath or in the heat exchanger. This is particularly the case for the heat exchanger as the passages are small and it cannot be seen if the unit is frozen. Loss of performance will occur if freezing takes place. Flow through the heat exchanger should be at least 10 litres/min at 20oC.
3To avoid thermal shock do not insert a cold cooling coil into, or fill a cold heat exchanger with, liquids above 40oC.
4Although the practice is not recommended fridge units may occasionally be subjected to temperatures up to 100oC. This is
provided that they are only being used thus intermittently, for example for cooling down to temperatures below 40oC.
5IN NO CIRCUMSTANCES MAY A REFRIGERATED UNIT BE SUBJECTED TO BATH/LIQUID TEMPERATURES ABOVE
100oC.
6For continuous use above 40oC either remove the coil from the bath (Dip Coolers) or reconnect the circuit without the heat exchanger in it (Flow Coolers).
Operating your unit
1Switch on the thermoregulator or circulator as instructed in the appropriate book so that good circulation is established.
2Switch the fridge unit on by pressing the power switch. The switch and the indicator on the front will light up. The fan and the compressor will start. It will take a little while for cooling to begin.
3Remember that as the Fridge units will only extract heat, a controller, such as a
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