Service And Troubleshooting - Teledyne T400 User Manual

5.7

SERVICE AND TROUBLESHOOTING

This contains a variety of methods for identifying the source of performance problems
with the analyzer. Also included in this are procedures that are used in repairing the
instrument.
The analyzer 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
(some are listed in :
1. Note Alerts and take corrective action as necessary.
2. Examine the values of all parameter functions and compare them to factory values.
3. Use the internal electronic status LEDs to determine whether the electronic
4. SUSPECT A LEAK FIRST!
114
QUALIFIED PERSONNEL REQUIRED
The operations presented in this Section must be performed by
qualified maintenance personnel only.
WARNING – Risk of Electrical Shock
Some operations require that the instrument be open and running.
Exercise caution to avoid electrical shocks
Exercise caution to avoid electrostatic or mechanical damage to the
analyzer.
Do not drop tools into the analyzer or leave those after your
procedures.
Do not short or touch electric connections with metallic tools while
operating inside the analyzer.
Use common sense when operating inside a running analyzer.
Note any major deviations from the factory values and take corrective action.
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.
• 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.
Teledyne API – Model T400 O
CAUTION
Analyzer 083730400A DCN8130
3