Labconco FreeZone Triad Freeze Dry System 74000 Series - Manual (Page 41)

Chapter 7: Troubleshooting
Product Service 816-333-8811 or 1-800-522-7658 37
The illustration below shows how the sample valve installs on the
chamber.
Diagnostic Mode
In the event that there is a problem with the Triad Freeze Dry System, a
diagnostic mode is available. This mode can be used to diagnose problems by
isolating individual system components to confirm their operation. With the
unit Power Switch OFF, press the  button and turn the Power Switch ON.
The display will show:
Press .
The display will show:
The Lexsol pump will turn on or press .
The display will show:
The Lexsol pump, vacuum pump and vacuum valve will turn on or press .
The display will show:
Figure 5
DIAGNOSTIC MODE
LEXSOL PUMP ON
LEXSOL AND VAC. PUMP ON
REFRIGERATION -- SHELF