Lauda VC 1200, Operating Instructions Manual

Page: 83 / 112

6. Switch on the device and adjust the setpoint to 10 °C. After
starting the cooling unit, fill the device through the inlet hose
of the water cooling unit with LAUDA decalcifying agent. Use
a funnel or a pump.
7. Continuously fill in decalcifying agent or pump it around. Con-
tinue this process until the foaming reaction goes down. This
is usually the case after approx. 20 to 30 minutes.
8. Drain the condenser afterwards.
Further information about draining the condenser
can be found in Ä Chapter 9.2 ‘Draining con-
denser’ on page 90 .
9. Thoroughly flush the cooling water circuit with clean water.
Allow at least 10 litres of water to flow through the
device.
10. Reconnect the device to the cooling water supply.
7.8 Checking heat transfer liquid
Contaminated or diluted heat transfer liquid must be replaced. Fur-
ther use of the heat transfer liquid is only permitted with appro-
priate test results.
The heat transfer liquid must be checked according to DIN 51529.
Maintenance
Variocool 83