ThermoFisher Scientific Ozone Primary Standard 49iQPS, Instruction Manual

Page: 154 / 256

Troubleshooting
Troubleshooting Guide
5-4 49iQPS Instruction Manual Thermo Scientific
Problem Possible Cause Action
Lamp Remove one cell and look for blue
light in hole of input block.
Lamp heater Check lamp temperature from the
Status & Alarms>Photometer Bench
screen.
+/- 15V power supply Check +/- 15V from the Status &
Alarms>Photometer Bench screen.
Cell A or B noise
excessive Foreign material in one cell Clean cell.
Defective detector Interchange detectors at photometer
DMC PCB connectors to determine if
detector is defective.
Cell A and B noise
excessive Foreign material in cells Clean cells.
Lamp failure
+/- 15V power supply Check +/- 15V from the Status &
Alarms>Photometer Bench screen.
Output signal noisy Recorder Replace or repair recorder.
Sample is varying Run instrument on stable ozone
source. If quite, no malfunction.
Foreign material in cell Clean cell.
Sticky solenoid valve Replace with known-good solenoid
valve.
Analyzer does not
calibrate properly Leak Check all tubing connections for leak.
Contaminated scrubber Perform scrubber efficiency test.
Replace if needed.
Flow/Pressure out of
calibration Recalibrate flow/pressure in the
operator’s manual.
Dirty system Clean cells and flow components.
Solenoid defective Replace with known-good solenoid
valve.
Slow response Averaging time Verify averaging time is set properly.
Contaminated photometer Clean bench and then condition
system overnight.
Alarm – O
3
Lamp
temp
Defective lamp heater Replace ozonator, lamp driver board
or lamp assembly.
Alarm –Lamp temp Defective lamp heater Replace bench lamp driver board or
lamp assembly.
Alarm – Flow Flow low Check sample capillary for blockage.
Replace as necessary.