Troubleshooting
Troubleshooting Guides
6-4
Model 146
i
Instruction Manual
Thermo Fisher Scientific
Permeation oven fails
to warm up
Oven not ON
Turn oven ON.
Not enough time has elapsed since
turning oven ON
Wait one hour from
powering up instrument.
Loose cable/connections
Check cable/connections.
Oven heater defective
Replace oven.
Control circuit malfunction
Replace measurement
interface board (see
“Servicing” chapter).
Temperature display
erratic
Flow through permeation tube oven
not constant
Clean capillary, readjust
regulator (see “Preventive
Maintenance” chapter).
Cell frequency high
Light setting too high
Lower lamp setting (Service
Mode > Lamp Setting).
Defective detector
Replace detector module.
Defective photometer board
Replace photometer board.
Defective measurement interface
board
Replace measurement
interface board.
Cell frequency low or
zero
Light setting too low
Raise lamp setting (Service
Mode > Lamp Setting).
Contaminated cell
Clean cell.
Defective detector
Replace detector module.
Defective photometer board
Replace photometer board.
Defective measurement interface
board
Replace measurement
interface board.
Cell noise excessive
Contaminated cell
Clean cell.
Defective detector
Replace detector module.
Lamp failure
Replace lamp.
Pressure transducer
does not hold
calibration
Plumbing leak or bad electrical
connection
Check plumbing and
electrical connections.
Defective pressure transducer
Replace pressure transducer.
Defective measurement interface
board
Replace measurement
interface board.
Output signal
noisy
Defective recorder
Replace or repair recorder.
Sample is varying
Run instrument on stable
ozone source, if quiet, no
malfunction.
Table 6-1.
Troubleshooting - General Guide, continued
Malfunction
Possible Cause
Action
Содержание 146i
Страница 1: ...Model 146i Instruction Manual Dynamic Gas Calibrator Part Number 102482 00 30Jan2008 ...
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Страница 188: ...Troubleshooting Service Locations 6 26 Model 146i Instruction Manual Thermo Fisher Scientific ...
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 ...