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Teledyne API T703 Calibrator Operation Manual General Troubleshooting & Repair
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11. GENERAL TROUBLESHOOTING & REPAIR
This section contains a variety of methods for identifying and solving performance problems with the calibrator.
NOTE
The operations outlined in this chapter must be performed by qualified maintenance
personnel only.
WARNING
Risk of electrical shock. Some operations need to be carried out with the
instrument open and running.
Exercise caution to avoid electrical shocks and electrostatic or mechanical
damage to the calibrator.
Do not drop tools into the calibrator or leave those after your procedures.
Do not shorten or touch electric connections with metallic tools while
operating inside the calibrator.
Use common sense when operating inside a running calibrator.
11.1. GENERAL TROUBLESHOOTING
The T703 Photometric Calibrator 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 calibrator’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!
Customer service data indicate that the majority of all problems are eventually traced to leaks in the
internal pneumatics of the calibrator 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.
07223B DCN6378