Troubleshooting
Troubleshooting Guide
6-2
42iQ 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
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 42iQ
Страница 1: ...42iQ Instruction Manual NO NO2 NOx Analyzer 117435 00 1Apr2020 ...
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Страница 34: ...Operation Instrument Display 3 8 42iQ Instruction Manual Thermo Scientific ...
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Страница 199: ...Maintenance Pump Rebuilding Thermo Scientific 42iQ Instruction Manual 5 7 Figure 5 3 Pump Rebuilding ...
Страница 214: ...Servicing Fan Replacement 7 8 42iQ Instruction Manual Thermo Scientific Figure 7 8 Replacing the Fan ...
Страница 256: ...Servicing DMC Ozonator 7 50 42iQ Instruction Manual Thermo Scientific Figure 7 53 Remove Ammonia Scrubber ...
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