7
5. Preparations
5.1. Installation
• Place the unit in an upright position.
• Keep at least 20 cm of open space on the front and rear venting
grids.
• Do not set up the unit in the immediate vicinity of heat sources
and do not expose to sun light.
• Before operating the unit after transport, wait about one hour
after setting it up. This will allow any oil that has accumulated
laterally during transport to flow back down thus ensuring
maximum cooling performance of the compressor.
• Only for water cooled models:
Ensure circulation of cooling water by connecting the tubing to
cooling water inlet and outlet on the rear of the refrigerated
circulator.
Cooling water connectors: ½"
Cooling water see page 43
5.2. Bath liquids and tubing
Carefully read the safety data sheet of the bath liquid used, particulary with
regard to the fire piont!
If Ethanol is used, only supervised operation is possible.
• Recommended bath liquids:
Bath liquids Temperature range Flash point fire point
Thermal M +50 °C ... 170 °C >275 °C >320 °C
Thermal H +50 °C ... 250 °C >280 °C >350 °C
Thermal HY -60 °C ... 50 °C >62 °C >110 °C
Ethanol (C
2
H
5
OH) -100°C bis 0 °C 12 °C
deionized water 5 °C bis 80 °C
ATTENTION: The maximum permissible viscosity is 30 mm
2
x s
-1.
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