Troubleshooting
Troubleshooting Guides
Thermo Fisher Scientific
Model 146
i
Instruction Manual
6-5
Contaminated cell
Clean cell.
Sticky solenoid valve
Replace with known good
solenoid valve.
Photometer does not
calibrate properly
Leak
Perform leak test (see
“Servicing” chapter.
Bench thermistor defective
Replace bench thermistor.
Pressure transducer out of
calibration
Recalibrate pressure
transducer.
Dirty system
Clean cells and flow
components.
Defective solenoid
Replace solenoid.
Lamp intensity unstable
Replace detector or
photometer board.
Slow response
Averaging time
Verify averaging time is set
properly.
Leak
Perform leak test (see
“Servicing” chapter).
Contaminated optical bench
Clean bench and then
condition system overnight.
Table 6-2.
Troubleshooting - Alarm Messages
Alarm Message
Possible Cause
Action
Alarm - O
3
Lamp Temp
Defective ozonator board
Replace ozonator board.
Defective ozonator lamp heater
Replace ozonator lamp
heater.
Alarm - Lamp Temp
Defective photometer board
Replace photometer board.
Defective photometer lamp heater
Replace photometer lamp
heater.
Alarm - Bench Temp
Defective fan
Check for 24 VDC on fan
connector and replace fan if
24 VDC is applied to fan.
Check fan filter
Clean or replace foam filter
(see “Preventive
Maintenance” chapter).
Table 6-1.
Troubleshooting - General Guide, continued
Malfunction
Possible Cause
Action
Содержание 146i
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Страница 258: ...System Description I O Components 8 16 Model 146i Instruction Manual Thermo Fisher Scientific ...
Страница 272: ...9 14 Model 146i Instruction Manual Thermo Fisher Scientific Figure 9 4 Rack Mount Option Assembly ...
Страница 273: ...Thermo Fisher Scientific Model 146i Instruction Manual 9 15 Figure 9 5 Bench Mounting ...
Страница 274: ...9 16 Model 146i Instruction Manual Thermo Fisher Scientific Figure 9 6 EIA Rack Mounting ...
Страница 275: ...Thermo Fisher Scientific Model 146i Instruction Manual 9 17 Figure 9 7 Retrofit Rack Mounting ...
Страница 276: ...Optional Equipment Mounting Options 9 18 Model 146i Instruction Manual Thermo Fisher Scientific ...