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Thermo Fisher Scientific
Table 6-1. Troubleshooting - General Guide, continued
Malfunction
Possible Cause
Defective connector
Calibration as
Leak
measured at output of
mass flow controller
does not agree with
Mass flow controller not calibrated
calibration as
measured at output of
instrument
No ozone output
Lamp failure
Ozonator heater failure
Ozonator board failure
Low ozonator output
Leak in ozonator or distribution
manifold
Flow excessively high
Ozonator board failure
Weak lamp
Unstable ozone output
Failure of analyzer measuring ozone
Leak in system
Zero air flow unstable
Lamp failure
Defective ozonator board
Troubleshooting
Troubleshooting Guides
Action
Replace connector.
Perform a leak check (see
"Servicing" chapter).
Calibrate mass flow
controller
Check for blue light when
removing ozone lamp from
ozonator and replace lamp if
light not visible.
Check to see that ozonator is
warm (>50 °C). If not warm,
replace heater or heat power
supply (see "Servicing"
chapter).
Replace ozonator board (see
"Servicing" chapter).
Check for leaks in ozonator
and manifold system (see
"Servicing" chapter) and
repair leak.
Check zero air flow valve and
reduce flow.
Replace ozonator board (see
"Servicing" chapter).
Check to see that there is a
bright blue light when
removing the ozone lamp
from ozonator, with ozonator
level set to 100%. If not,
replace lamp (see
"Servicing" chapter).
Repair analyzer.
Check for leaks and repair
(see "Servicing" chapter).
Check zero air flow meter.
Replace lamp.
(see "Servicing" chapter).
Replace ozonator board (see
"Servicing" chapter).
Model 146i Instruction Manual
6-3
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Troubleshooting
