Teledyne 6400A - Sulfur dioxide analyzer - Manual (Page 5)

TAI Model 6400A SO
2
Analyzer Operator Manual, 02164, Rev. G
iii
8 MAINTENANCE ........................................................................................ 8-1
8.1 M AINTENANCE S CHEDULE ........................................................................................... 8-1
8.2 R EPLACING THE S AMPLE P ARTICULATE F ILTER ............................................................. 8-2
8.3 R EPLACING THE P ERMEATION T UBE ( OPTION )............................................................... 8-4
8.4 R EPLACING THE IZS Z ERO A IR S CRUBBER ( OPTION ) ..................................................... 8-4
8.5 C LEANING O RIFICE AND O RIFICE F ILTER ...................................................................... 8-5
8.6 C LEANING THE R EACTION C ELL ................................................................................... 8-6
8.7 P NEUMATIC L INE I NSPECTION ...................................................................................... 8-6
8.8 L EAK C HECK P ROCEDURE ........................................................................................... 8-9
8.9 L IGHT L EAK C HECK P ROCEDURE ............................................................................... 8-10
8.10 EPROM R EPLACEMENT P ROCEDURE ...................................................................... 8-10
9 DIAGNOSTIC, TROUBLESHOOTING...................................................... 9-1
9.1 O PERATION V ERIFICATION - 6400A D IAGNOSTIC T ECHNIQUES ....................................... 9-3
9.1.1 Fault Diagnosis with TEST Variables................................................................. 9-3
9.1.2 Fault Diagnosis with WARNING Messages ....................................................... 9-9
9.1.3 Fault Diagnosis using DIAGNOSTIC Mode ..................................................... 9-11
9.1.4 6400A Internal Variables ................................................................................. 9-18
9.1.5 Test Channel Analog Output ........................................................................... 9-20
9.1.6 Factory Calibration Procedure (Quick Cal) ...................................................... 9-21
9.2 P ERFORMANCE P ROBLEMS ....................................................................................... 9-23
9.2.1 AC Power Check ............................................................................................. 9-23
9.2.2 Flow Check ...................................................................................................... 9-24
9.2.3 No Response to Sample Gas .......................................................................... 9-24
9.2.4 Negative Concentration Display....................................................................... 9-25
9.2.5 Excessive Noise .............................................................................................. 9-25
9.2.6 Unstable Span ................................................................................................. 9-26
9.2.7 Unstable Zero .................................................................................................. 9-27
9.2.8 Inability to Span ............................................................................................... 9-27
9.2.9 Inability to Zero ................................................................................................ 9-28
9.2.10 Non-Linear Response.................................................................................... 9-28
9.2.11 Slow Response.............................................................................................. 9-29
9.2.12 Analog Output Doesn't Agree With Display Concentration ............................ 9-29
9.3 E LECTRONIC S UBSYSTEM T ROUBLESHOOTING AND A DJUSTMENTS ............................... 9-30
9.3.1 Computer, Display, Keyboard .......................................................................... 9-30
9.3.2 RS-232 Communications................................................................................. 9-33
9.3.3 Voltage/Frequency (V/F) Board ....................................................................... 9-36
9.3.4 Status/Temp Board.......................................................................................... 9-42
9.3.5 Power Supply Module...................................................................................... 9-45
9.3.6 Flow/Pressure Sensor ..................................................................................... 9-49
9.3.7 Reaction Cell Temp ......................................................................................... 9-53
9.3.8 Preamp Board ................................................................................................. 9-53
9.3.9 PMT Cooler ..................................................................................................... 9-53
9.3.10 HVPS (High Voltage Power Supply) .............................................................. 9-56