Lauda Heat Transfer Liquids - Lauda IN 130 T Operation Manual

4.4

LAUDA heat transfer liquids

Heat transfer liquid, water
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Please note:
If the heat transfer liquid reaches the lower limit of the temperature
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range, the temperature control properties can be expected to deterio-
rate as a result of the increase in viscosity. Therefore, only fully utilize
this temperature range when absolutely necessary.
Never use contaminated heat transfer liquid. Contamination in the
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pump housing can cause the pump to seize and the device to shut down.
Observe the safety data sheets for the various heat transfer liquids. If
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required, you can download the safety data sheets from our homepage.
Open the LAUDA homepage, tap  Services  Download center.
In the Download center, chose the [Safety data sheet] option in the
[Document type] drop-down list.
A list of safety data sheets in PDF format in different languages is
displayed.
Tap the relevant safety data sheet.
The download starts and the PDF file is downloaded.
Please note:
When using Kryo 30:
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The water content decreases during longer periods of operation at
higher temperatures and the mixture becomes flammable (flash point
119 °C). Check the mixing ratio using a hydrometer.
When using Aqua 90:
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Evaporation losses occur at higher temperatures.
When using Ultra 350 and Kryo 65:
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EPDM hoses are not suitable for Ultra 350 and Kryo 65.
When using mineral oils:
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EPDM hoses are not suitable for mineral oils.
When using silicone oils:
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Silicone hoses are not suitable for silicone oils.
The proportion of alkaline earth ions in the water must be between
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0.71 mmol/L and 1.42 mmol/L (equivalent of 4.0 and 8.0 °dH). Harder
water leaves limescale deposits in the device.
The pH value of the water must be between 6.0 and 8.5.
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Distilled, deionized or fully desalinated (FD) water is unsuitable due to its
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reactivity. High-purity water and distillates are suitable as a heat transfer
liquid after 0.1 g of soda (Na
liter of water.
Sea water is unsuitable due to its corrosive properties.
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Integral Process Thermostats and High-Temperature Thermostats
DANGER!
Use of unsuitable heat transfer liquid
Fire
Select a heat transfer liquid with a temperature range suit-

able for the application.
CO
2 3
, sodium carbonate) is added for every
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