Lauda L 100, Operating Instructions Manual

Page: 17 / 48

4.2 LAUDA heat transfer liquid
Take the following information into account:
 The heat transfer liquids each cover a recommended tem-
perature 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.
Approved heat transfer liquids
LAUDA
designa-
tion
Chemical
name
Tem-
perature
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
Monoethy-
lene glycol /
water
-30
-
90 4 50 at -25 °C LZB 109 LZB 209 LZB 309
 The water content decreases during longer periods of opera-
tion at higher temperatures and the mixture becomes combus-
tible (flashpoint approx. 120 °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 distillates 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
unsuitable 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
Commissioning
LOOP 17