Büchi Labortechnik AG
Operating the control panel | 6
Operation Manual Lyovapor™ L-200/L-200 Pro
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Submenu Maintenance
The submenu
[Maintenance]
contains tests for maintaining the instrument.
Action
Option
Explanation
[Vacuum test]
Perform vacuum test
See Chapter 9.2 "Performing a vac-
uum test", page 83
[Leak test]
Perform leak test
See Chapter 9.3.1 "Performing a leak
test with a drying chamber",
page 84
Submenu Service
NOTE
While freeze-drying is in progress, no settings can be changed on the Service
submenu.
Action
Option
Explanation
[Refrigerant circuit]
View
The following information on the re-
frigerant circuit is available:
Operating hours
Compressor
Ice condenser inlet temperature
Ice condenser outlet temperature
High-pressure safety cut-out
Low-pressure safety cut-out
[Vacuum system]
View
The following information on the
vacuum pump is available:
Pump hours of duty
Pump oil hours of duty
Pressure in the ice condenser
Main valve
Vacuum pump
Venting valve
Regulating valve
Vacuum regulation 1
Vacuum regulation 2
[Defrosting system]
Display/entry of figures The following information on the de-
frosting system is available:
Hours of duty
Drain valve open/closed
Submenu System Information
The submenu
[System information]
contains details of the connected components
and information on network connection diagnosis.