Teledyne 300 instruction manual Troubleshooting flow problems, Flow is zero

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.

10.6Troubleshooting 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. If no 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:

WARNING

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 02163G1 Teledyne API Model 300 CO Analyzer Instruction Manual - Page 90