Troubleshooting Individual Sub-Assemblies And Components - Teledyne 300 Instruction Manual

3. Check for dirty pneumatic system components and clean or replace as
necessary as described in Section 11.3.
4. Check for proper adjustment of DAC and ADC electronics by performing
the adjustment procedure in Section 9.2
5. Confirm the Sample Temperature, Sample Pressure, and Sample Flow
readings are correct. Check and adjust as required.
10.6 Troubleshooting individual sub-assemblies
and components
The following sections provide troubleshooting/check-out methods for the
specific sub-assemblies and components of the Analyzer.
10.6.1 Troubleshooting flow problems
When troubleshooting flow problems, it is a good idea to first confirm that the
actual flow and not the flow-meter is in error. If available, use an independent
flow meter rotameter or mass flow meter) to measure flow(s). Sample flow can
be measured at the sample inlet port at the instrument's rear panel.
independent flow meter is available, placing a finger over an inlet port and feeling
for a vacuum will at least give an indication whether flow is present.
If the independent flowmeter shows the flow to be correct, check the Pneumatic
Sensor Board as described in Section 10.6.5.
In general, flow problems can be divided into 3 categories:
- Flow in zero (no flow)
- Flow is greater than zero, but is too low, and/or unstable
- Flow is too high
Figure 1.3 in this Manual provides a schematic diagram of the Flow in a Model
300 and its optional IZS subsystem.
Flow is zero:
HAZARDOUS VOLTAGES PRESENT - USE CAUTION!
1. Confirm that the sample pump (sample flow) and/or IZS pump, (IZS flow)
is operating (turning). If not, check the 115V power to the pump. If the
pump does not operate with 115V present at its terminal, replace the
pump. Check for plugged pneumatic lines, filters, or orifices.
P/N 02163G Teledyne API Model 300 CO Analyzer Instruction Manual - Page 83
WARNING
If no