JULABO Magnum 91 Temperature System User Manual
Page 74
Cleaning the unit
74
Cleaning is performed in three steps. First rinse the internal reservoir, then the
remaining parts of the instrument. As third step, carefully remove the cleaning
liquid.
1. Cleaning the internal reservoir:
Switch off the unit with the mains switch!
Thus both valves "Fill" and "De-air" remain closed.
Slowly fill the temperature system via filling opening.
The cleaning liquid should drain via the overflow connector (12).
Pump
>Pump OFF
Mode: Sys close
Pump
>Pump OFF
Mode: drain
2. Cleaning the tubing lines and heat exchanger:
Fill the temperature system with cleaning liquid.
Switch on the unit with the mains switch!
Thus both valves "Fill" and "De-air" remain open.
The cleaning liquid in the reservoir flows slowly further into the heat
exchanger. See chapter 5.6.1.
Filling of external, closed systems
Pumpe the cleaning liquid through the unit.
In the submenu >Pump< the unit has to be adjusted on the operating status
>Sys close< .
Set the working temperature setpoint.
Recommendation: 20 °C
Press the start key
and allow the liquid to be pumped through the unit
for about 15 minutes.
Press the stop key
.
Drain the temperature system.
In the submenu >Pump< adjust the menu option >Mode< on >drain< stellen.
See chapter 5.8. Draining
Repeat this procedure according to the degree of decontamination.
3. Removing the cleaning liquid:
Switch on the unit with the mains switch!
Both valves "Fill" and "De-air" remain open.
Blow through the temperature system with dry, warm air. The air is fed in turns
through the different connectors on the temperature system.
Begin with the connector (12) leading to the internal reservoir.
Then blow through the pump connectors (10, 11) leading to the heat
exchanger and the drain ports (6) on the front.
Allow the system to dry (wait until the humidity evaporates). Then reconnect
the temperature system or close the connectors according the intended use.
Tighten the drain screw on the front.