7. Troubleshooting
Before troubleshooting any specific issues, Ecotech recommends ensuring the instrument has
successfully completed its start-up routine and all issues listed in the instrument status menu are
resolved (refer to Section 3.4.4).
Table 10 – Troubleshooting List
Replace the internal or external pump.
Blocked filter or orifice -
only installed in external
pump optioned
instrument.
Replace sintered filter and orifice, refer to
Section 6.4.8.
Pressurised
measurement cell
Ensure sample and zero inlets are maintained at
ambient pressure (vented to atmosphere)
Perform a pressure calibration (refer to
Section 5.3).
Or replace if required.
Ensure calibration system is functioning correctly
and is leak free.
Ensure sufficient gas is available for the instrument
and an adequate vent is available for excess gas.
A leak in the instrument or calibration system
dilutes the sample stream and causes low span
readings and noise.
A failed temperature control allows the instrument
to drift with ambient temperature. Verify that the
cell temperature is at 50 C 3 C.
Chassis lid not in place causing instrument to drift
with ambient temperature.
Chassis temperature drifting with ambient
temperature fluctuations. Stabilise ambient
temperature and remove instrument from direct
ambient heating or cooling.
Diagnose and repair the optical bench.
Noise level of reference
voltage outside tolerance
Replace UV lamp or lamp driver PCA. Ensure
instrument gain is between 0.8 and 1.8.
Damaged/faulty/weak
UV lamp
Tune the UV lamp to increase the reference
voltage output or replace (refer to Section 6.4.7).
Leak check (repair any leaks).
Selective scrubber inefficient and requires
replacement.
Calibration system error.
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