JULABO LH 85 High Dynamic Temperature System - Manual (Page 76)

Cleaning the unit
76
Cleaning is performed in two steps.
First rinse the internal reservoir, the tubing lines and the heat
exchanger.
As second step, carefully remove the cleaning liquid.
Pump
>Pump OFF
Mode: Sys close
Pump
>Pump OFF
Mode: drain
1. Cleaning internal reservoir, tubing lines and heat exchanger:
 Fill the temperature system with cleaning liquid.
See chapter 5.7. Filling
 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 5.9. Draining
2. Removing the cleaning liquid:
 Switch on the unit with the mains switch!
The venting valve 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 connectors (15, 16) leading to the internal
reservoir.
Then blow through the pump connectors (13, 14) leading to the
heat exchanger and the drain port (8) 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.