ThermoFisher Scientific Ozone Primary Standard 49iQPS, Instruction Manual

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Troubleshooting
Troubleshooting Guide
Thermo Scientific 49iQPS Instruction Manual 5-5
Problem Possible Cause Action
If using a sample particulate filter,
make sure it is not blocked.
Disconnect sample particulate filter
from the sample bulkhead; if flow
increases, replace filter.
Alarm – Cell A
Intensity
Alarm – Cell B
Intensity
Pre-amp gain not set
properly Check gain adjustment.
Defective photometer DMC
PCB board Replace photometer DMC PCB board.
Alarm – Zero Check
(Option) Instrument out of
calibration Recalibrate instrument.
Check gas supply.
Perform a manual calibration.
Alarm – O
3
Concentration
Concentration has
exceeded range limit Check to ensure range corresponds
with expected value. If not, select
proper range.
Concentration low Check user-defined low set point, set
to zero.
Alarm – Lamp Heater
Current (Photometer) Defective heater Replace heater as needed.
Alarm – Lamp Temp
Sensor Short
(Photometer) Defective sensor Replace sensor as needed.
Alarm – Lamp Temp
Sensor Open
(Photometer) Defective sensor Replace sensor as needed.
Alarm – Bench Temp
Sensor Open
(Photometer) Defective sensor Replace sensor as needed.
Alarm – Bench Temp
Sensor Short
(Photometer) Defective sensor Replace sensor as needed.
Alarm – Lamp
Connection
(Photometer) Defective lamp Replace lamp as needed.
Alarm – Lamp Short
(Photometer) Defective lamp Replace lamp as needed.
Alarm – Lamp Heater
Current (Ozone) Defective heater Replace heater as needed.