Lauda UKT Operating instructions

Hello! I'm your chat assistant. I have analyzed the operating instructions for LAUDA's UKT 3000, UKT 3000 W, UKT 6000, and UKT 6000 W circulating cooling units. These instructions cover the setup, operation, safety features, and maintenance of these devices. I can help you understand the functions of the digital display, setpoint, pump, and cooling system described in the document. Feel free to ask me any questions about these units.
What is the operating temperature range of these units?

What should I do if a negative pressure is indicated?

What does the red LED indicate?

What is the function of the multifunction output?