Lauda Heat Transfer Liquid - Lauda LOOP 100 Operation Manual

4.2

LAUDA heat transfer liquid

Table 3: Approved heat transfer liquids
LAUDA Chemical
designation name
Decalcified
Aqua 90
water
Monoethylene
Kryo 30 glycol/water
mixture
Heat transfer liquid Kryo 30
Heat transfer liquid, water
16 / 41
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.
Viscosity (kin) in
Temperature
mm²/s at
range in °C
(at 20 °C)
5 - 90 1
4
-30 - 90
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
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.

LOOP
Viscosity (kin) in
mm²/s at
temperature
5 L
LZB 120
¾
50 at -25 °C LZB 109
Container size
Cat. No.
10 L 20 L
LZB 220 LZB 320
LZB 209 LZB 309
CO , sodium
2 3
V3