Teledyne T100 Manuale Utente

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Troubleshooting & Service 
Teledyne API  - T100 UV Fluorescence SO2 Analyzer  
236 
12.1. GENERAL TROUBLESHOOTING 
The T100 has been designed so that problems can be rapidly detected, evaluated and 
repaired.  During operation, it continuously performs diagnostic tests and provides the 
ability to evaluate its key operating parameters without disturbing monitoring 
operations. 
A systematic approach to troubleshooting will generally consist of the following five 
steps: 
1. Note 
any 
WARNING MESSAGES
 and take corrective action as necessary. 
2.  Examine the values of all TEST functions and compare them to factory values.  Note 
any major deviations from the factory values and take corrective action. 
3.  Use the internal electronic status LEDs to determine whether the electronic 
communication channels are operating properly.   
  Verify that the DC power supplies are operating properly by checking the voltage 
test points on the relay PCA.   
  Note that the analyzer’s DC power wiring is color-coded and these colors match the 
color of the corresponding test points on the relay PCA. 
4.  Suspect a leak first!  
  Technical Support data indicate that the majority of all problems are eventually 
traced to leaks in the internal pneumatics of the analyzer or the diluent gas and 
source gases delivery systems.   
  Check for gas flow problems such as clogged or blocked internal/external gas lines, 
damaged seals, punctured gas lines, a damaged / malfunctioning pumps, etc. 
5.  Follow the procedures defined in Section 12.6  to confirm that the analyzer’s vital 
functions are working (power supplies, CPU, relay PCA, touch-screen display, PMT 
cooler, etc.).   
  Refer to Figure 3-5 for the general layout of components and sub-assemblies in the 
analyzer.   
  Refer to the wiring interconnect diagram and interconnect list in Appendix D. 
12.1.1. FAULT DIAGNOSTICS WITH WARNING MESSAGES 
The most common and/or serious instrument failures will result in a warning message 
displayed on the front panel. Table 12-1 contains a list of warning messages, along with 
their meaning and recommended corrective action. 
It should be noted that if more than two or three warning messages occur at the same 
time, it is often an indication that some fundamental analyzer sub-system (power supply, 
relay board, motherboard) has failed rather than an indication of the specific failures 
referenced by the warnings. In this case, a combined-error analysis needs to be 
performed. 
The analyzer will alert the user that a Warning message is active by flashing the FAULT 
LED and displaying the Warning message in the Param field along with the CLR button 
(press to clear Warning message). The MSG button displays if there is more than one 
warning in queue or if you are in the TEST menu and have not yet cleared the message. 
The following display/touchscreen examples provide an illustration of each: 
06807C DCN6650