Lauda LOOP 100, Operation Manual

Page: 16 / 44

4.2 LAUDA heat transfer liquid
Note the following instructions:

The heat transfer liquids each cover a recommended temperature range
and must be suitable for the temperature range associated with their
application.

Never use contaminated or degenerated heat transfer liquids.

You can request a copy of the safety data sheets for the heat transfer
liquid at any time, if necessary.
Table 3: Approved heat transfer liquids
LAUDA
designation
Chemical
name
Temperature
range in °C
Viscosity (kin) in
mm²/s at
(at 20 °C)
Viscosity (kin) in
mm²/s at
temperature
Container size
Cat. No.
5 L 10 L 20 L
Aqua 90
Decalcified
water
5
-
90 1
¾
LZB 120 LZB 220 LZB 320
Kryo 30
Monoethylene
glycol/water
mixture
-30
-
90
4 50 at -25 °C LZB 109 LZB 209 LZB 309

The water content decreases during longer periods of operation at
higher temperatures and the mixture becomes combustible (flash point
119 °C). Check the mixing ratio using a hydrometer.

The proportion of alkaline earth ions in the water must be between
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.

Due to their corrosive properties, distilled, deionized, fully desalinated
(FD) water, or ocean water cannot be used. High-purity water and dis-
tillates are suitable as a medium after 0.1 g of soda (Na
2
CO
3
, sodium
carbonate) is added for every liter of water.

Avoid chlorine content in the water at all costs. Do not add chlorine to
the water. Cleaning agents and disinfectants, for example, contain
chlorine.

The water must be free of impurities. Water with iron content is unsuit-
able due to rust formation and untreated river water is unsuitable due to
algae growth.

The addition of ammonia is not permitted.
Heat transfer liquid Kryo 30
Heat transfer liquid, water
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