Thermo Scientific Mercury Freedom 80i, Manual

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Troubleshooting
System Troubleshooting Guides
Thermo Fisher Scientific Mercury System Manual 4-15
Figure 4–1.
Example of Model 80 i Interface Board Voltage Test Point Locations
LEDs on the 82 i measurement interface board are used to troubleshoot the
82 i and the 83 i . Each LED represents a valve in either the 82 i or 83 i .
When an LED is ON, the associated valve is ON. Refer to
Table 4–6
for a
recommended troubleshooting action to perform. In most cases, the
problem will involve wiring and/or plumbing.
Table 4–6.
Probe Troubleshooting – 82 i Measurement Interface Board LEDs
LED No. Description Action
4 Blowback stinger (83 i )
5 Blowback filter (83
i
)
Check air supply and pressures via diagnostics.
Check air at the probe.
6 Cal zero (83 i )
7 Hg spike (83 i )
Verify that the 81 i is outputting cal gas, diagnostics,
flows. Check at probe also.
8 Eductor (82 i ) Check failsafe temperature.
9 Dilution (82
i
) Check air supply and pressures via diagnostics.
Check air at the probe.
10 Mercury valve (83 i ) Verify that the 81 i is outputting cal gas, diagnostics,
Probe Troubleshooting
with 82
i
LEDs
Model 80
i
Only