Chiller Startup - Lauda ULTRACOOL UC 8 Manual

Only an authorized technical service can adjust the antifreeze set point. The following table shows the
ethylene glycol concentration and the antifreeze adjustment required:
Glycol concentration (4) and
antifreeze adjustment
7ºC or more
Less than 7ºC
until 5ºC
Less than 5ºC
until 0ºC
Less than 0ºC
until -5ºC
Less than -5ºC
until -10ºC
Glycol concentration (4) and
antifreeze adjustment
45ºF or more
Less than 45ºF
until 41ºF
Less than 41ºF
until 32ºF
Less than 32ºF
until 23ºF
Less than 23ºF
until 14ºF
(4) The ethylene glycol percentage is given as % measured as weight of the total mixture. In case of any
modification in the quantity of water in the installation, the concentration of ethylene glycol should be
checked.
If more volume is required it is necessary to keep the ethylene glycol concentration
Do not use automotive antifreeze. Use lab grade ethylene glycol only! Do not use an ethylene glycol
concentration above 40%; this would damage the water pump.

3.2 CHILLER STARTUP

Clean the application water circuit with tap water in order to be sure that there are no free particles.
Otherwise the filter element can block up during the startup process.
Turn Off the Main power switch (to avoid any possibility of unexpected startup of the equipment during this
operation). Open the lateral panel, open the tank cover and fill the tank with water of the required quality
Min Ambient Temperature
Less than 0ºC until -
0ºC or more
0% 15%
0ºC -5ºC
15% 15%
-5ºC -5ºC
30% 30%
-15ºC -15ºC
30% 30%
-15ºC -15ºC
40% 40%
-20ºC -20ºC
Min Ambient Temperature
Less than 32ºF until
32ºF or more
23ºF
0%
32ºF 23ºF
15%
23ºF 23ºF
30%
5ºF
30%
5ºF
40%
-4ºF
11
Less than -5ºC until
5ºC -15ºC
30%
-15ºC
30%
-15ºC
30%
-15ºC
30%
-15ºC
40%
-20ºC
Less than 23ºF until
5ºF
15% 30%
5ºF
15% 30%
5ºF
30% 30%
5ºF 5ºF
30% 30%
5ºF 5ºF
40% 40%
-4ºF -4ºF