3.4
Filling
Before filling the tank, disconnect the mains power supply.
Allow for thermal expansion and contraction of the liquid and for any liquid in external
circulation paths.
DO NOT SWITCH ON before filling the tank.
Switch the power on at the front of the refrigeration unit and at the front of the
Thermostat unit. Check that the display lamp is illuminated.
In section 4, are examples of setting up the refrigerator and the thermostat unit.
Note: Water from a drinking source and deionised water are suitable for use in the
circulators. However, some older deionisers can create concentrated salt solutions for a
short time after the ioniser is rejuvenated. This solution should not be used in the
circulators as it may cause corrosion.
WARNING: The equipment must be earthed (grounded). It is protected by internal
electrical fuses. We strongly recommend that the power supply to any equipment for
heating liquids should include a residual-current circuit breaker (earth leakage trip).
Check that the voltage rating of the products, given on the serial number plate at the
power cable entry, is correct for your supply.
To perform programmed control functions on the Optima refrigeration units you require
either a GR150 or GP200 Optima thermostat. All the refrigeration units can be controlled
except the R1.
3.5
Switching on and setting up
-50 to 50ºC
Specified liquids
Temperature range
Water can be used, but care should be taken as hot water vapour
can be dangerous, use a lid. At these temperatures the control of
the temperature will not be as affective due to localised boiling,
and there may be a large loss of water due to evaporation.
Water, recommended temperature range
Use a lid above 60ºC and below 10ºC
80% water, 20% antifreeze (inhibited ethylene glycol)
WARNING - TOXIC: Follow the manufacturer's instructions
For safe disposal consult your local Environmental Health Office
50% water, 50% antifreeze (inhibited ethylene glycol)
WARNING - TOXIC: Follow the manufacturer's instructions
For safe disposal consult your Local Environmental Health Office
Silicone oil - low viscosity (Bayer silicone M3)
For safe disposal consult your Local Environmental Health Office
+80 to 99.9º C:
+5 to 80º C:
0 to 30º C :
-30 to 30ºC:
Page 11
Low temperature bath/circulator
Operating instructions
Version 4 - Jan 2010
