Wittmann Tempro basic C 90 Translation Of Original Operating Manual page 49

2. Systems with aluminium
pH-value
3. Temperatures under 5 °C
An antifreeze agent with corrosion inhibitor must be added when operating
water recirculation chilling units under +5°C, e.g. ST-DOS F-190.
4. Temperatures over 90 °C
If the water is heated to over 90°C we recommend softening the water.
Suitable softening systems are available at
http://www.schweitzer-chemie.de.
5. Temperatures over 160 °C
No antifreeze agents with a mono-ethylene glycol base may be used for
water temperatures over 160 °C.
6. Temperatures over 180 °C
If the water is heated to over 180°C we recommend desalting the water.
Suitable reverse osmosis systems are available at
http://www.schweitzer-chemie.de.
7. The water content should be exchanged at regular intervals. The frequency
of water exchange depends on the system water quality, the filter
technology, the system materials used and the tool change.
We recommend adhering to this water quality in order to protect your
system components.
Wittmann Kunststoffgeräte GmbH does not give any warranty for damage
to the system components caused by corrosion and deposits.
Tempro basic C 90 & Tempro primus C 90
> 7.0 to a maximum of 8.0
BASIC & PRIMUS C90 V 3.0 english / 10.04.2012
Page 49