Thermo Scientific Mercury Freedom 80i, Руководство пользователя

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Troubleshooting
System Troubleshooting Guides
Thermo Fisher Scientific Mercury System Manual 4-9
Malfunction Possible Cause Action
Zero or Span will not
stabilize Flow rate of either
zero of span gas is
inadequate Verify that the zero air system is
providing adequate flow.
Instrument is not
drawing in span gas Check sample flow and pressure
readings (Diagnostics menu).
Use an independent flow meter to
check flows at the span inlet and
exhaust bulkheads (they should
match).
Perform a leak test.
Hg is being absorbed
or released by dirt in
the tubing or filters of
the calibration
system, or
contamination inside
the instrument Replace any lines made of vinyl or
other plastics with fresh Teflon.
Replace Teflon filter membranes that
look dirty. Remove any filters that are
not Teflon membranes.
Hydrator gas leak or
no water Check to see if bottom reservoir has
water. Locate gas leak and repair.
External pump failure Replace the external pump.
Averaging time is not
set correctly. Check the Averaging Time (Main
Menu). If too high, the unit will be
slow to stabilize. If too low, the signal
may appear noisy. Set Averaging Time
to one minute.
Hot line temperature
failure Ensure hot line has power.
Reduced response or no
response to sample gas
with alarm(s) indicated Undefined electronic
failure or external
pump failure Check alarm screens and the
diagnostic voltage screen to localize
fault.
Instrument is not
drawing in sample as
expected. Check sample flow and pressure
readings (Diagnostics menu).
Check pump.
Use an independent flow meter to
check flows at the Hg(0) or Hg(t) inlet
and exhaust bulkheads (they should
match). Instrument should be in
Manual mode with either Hg(0) or Hg(t)
selected.
Perform a leak test.
Check the external plumbing for leaks
or other problems.
Check all external plumbing and the
source of the sample to verify that the