Thermo Scientific Mercury Freedom 80i, Manual

Page: 35 / 104

System Installation, Set Up and Shut Down
System Checkout
Thermo Fisher Scientific Mercury System Manual 2-5
10. At the 80 i Main Menu, select > Diagnostics > Pressure > Analyzer , and
record the chamber pressure (typically < 70 mm Hg).
11. At the 80 i Main Menu, select > Instrument Controls > Auto/Manual ,
and switch to Manual Hg(0) .
12. At the 80i Main Menu, select > Diagnostics > Pressure > Analyzer , and
record the chamber pressure. There should be no more than four mm
Hg difference between this pressure and the pressure recorded in Hg(t)
mode. If the pressure difference is > four mm Hg, check the system for
leaks.
13. At the 80 i Main Menu, select > Diagnostics > Pressure > Probe , and
verify vacuum pressure is > 20 inches Hg at 55 psig for 83 i , >17.5
inches Hg at 35 psig for 83 i GC.
14. Model 83 i only - At the 80 i Main Menu, select > Diagnostics >
Pressure > Probe , and note venturi pressure.
15. At the 80 i Main Menu, select > Instrument Controls > Component
Power , and turn Eductor Valve Power ON .
16. At the 80 i Menu > Diagnostics > Pressure > Probe , note venturi
pressure. It should be at least 1.5 inches H
2
O greater than the value
while the eductor is OFF.
17. Wait 4-6 hours, then perform a system calibration. Refer to the
“Calibration” chapter in this manual.
18. Allow the system to stabilize overnight, then perform a zero and span
check. Refer to “Zero and Span Check” in the “Model 80
i Instruction
Manual” Calibration chapter. If the system passes the zero and span
check, it is ready to run sample. If the system does not pass the zero
and span check, recalibrate.