Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 249)

Troubleshooting and ServiceTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments
12. TROUBLESHOOTING AND SERVICE
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.
NOTE
Q UALIFIED P ERSONNEL
The operations outlined in this section must be performed by qualified maintenance
personnel only.
CAUTION
G ENERAL S AFETY H AZARD
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 analyzer.
Do not drop tools into the analyzer or leave those after your procedures.
Do not shorten or touch electric connections with metallic tools while operating
inside the analyzer.
Use common sense when operating inside a running analyzer.
12.1. GENERAL TROUBLESHOOTING
The GFC7001T/GFC7001TM Carbon Monoxide 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:
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.