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Troubleshooting
Troubleshooting Guide
6-2
42iQHL Instruction Manual
Thermo Scientific
Problem
Possible Cause
Action
Micro
SD
Card
Programming
If Micro SD card was just
replaced, re-install the old one. If
the problem is fixed, request a
replacement Micro SD card.
Solenoid current out of
range (option)
Sticking or damaged
solenoid
Reset solenoid via
Settings>Health Check>Status
and Alarms>Valve and Pump
Resets screen. If damaged,
replace solenoid valve block.
Pump current out of range
(Bypass option)
Damaged or dirty pump
Reset pump via Settings>Health
Check>Status and Alarms>Valve
and Pump Resets. Inspect and
refurbish pump. If pump motor is
damaged, replace pump.
No output signal (or very
low output)
No sample gas reaching
the analyzer
Check input sample flow.
Ruptured
pump
diaphragm
Rebuild pump head.
Blocked sample capillary
Unplug power cord. Clean or
replace capillary.
No ozone reaching the
reaction chamber
Check the “Configuration” menu
to see if the ozonator is ON. If it
is ON, check dry air supply.
No output signal
Disconnected or
defective input or high
voltage supply
Unplug power cord. Check that
cables are connected properly.
Check cable resistance.
Analyzer not calibrated
Recalibrate.
Defective ±12 volt
Check supply voltages in Status
and Alarms>Reaction Chamber
screen
Calibration drift
Dryer to ozonator
depleted
Replace.
Line voltage fluctuations
Check to see if line voltage is
within specifications.
Defective pump
Rebuild pump.
Unstable NO or NO
2
source
Replace.
Clogged capillaries
Unplug power cord. Clean or
replace capillary.
Clogged sample air filter
Replace filter element.
Excessive noise
Defective or low
sensitivity PMT
Unplug power cord. Remove PMT.
Install known good PMT. Plug in
power cord. Check performance.
Содержание 42iQHL
Страница 1: ...42iQHL Instruction Manual High Level NO NO2 NOx Analyzer 119018 00 27Sep2018 ...
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Страница 36: ...Operation Instrument Display 3 8 42iQHL Instruction Manual Thermo Scientific ...
Страница 98: ...Operation Settings 3 70 42iQHL Instruction Manual Thermo Scientific Digital I O Digital I O serial number ...
Страница 100: ...Operation Settings 3 72 42iQHL Instruction Manual Thermo Scientific Sample Valve Zero Valve Span Valve Bypass Pump ...
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Страница 198: ...Maintenance Pump Rebuilding 5 6 42iQHL Instruction Manual Thermo Scientific Figure 5 2 Pump Rebuilding ...
Страница 214: ...Servicing Fan Replacement 7 8 42iQHL Instruction Manual Thermo Scientific Figure 7 8 Replacing the Fan ...
Страница 257: ...Servicing DMC Ozonator Thermo Scientific 42iQHL Instruction Manual 7 51 Figure 7 52 Remove Ammonia Scrubber ...
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