Teledyne T802 11.3.2. TYPICAL SAMPLE GAS FLOW PROBLEMS

Teledyne API T802 Paramagnetic O2 Analyzer Operation Manual Troubleshooting and Service
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Figure 11-6: T802 – Internal Pneumatics with CO2 Sensor Option 67
11.3.2. TYPICAL SAMPLE GAS FLOW PROBLEMS
11.3.2.1. FLOW IS ZERO
The unit displays a SAMPLE FLOW warning message on the front panel display
or the SAMPLE FLOW test function reports a zero or very low flow rate.
Confirm that the sample pump is operating (turning). If not, use an AC voltmeter
to make sure that power is being supplied to the pump. If no power is present at
the electrical leads of the pump, take the following steps:.
1. If AC power is being supplied to the pump, but it is not turning, replace the
pump.
2. If the pump is operating but the unit reports no gas flow, perform a flow check
as described in Section 10.3.4.
3. If no independent flow meter is available:
 Disconnect the gas lines from both the sample inlet and the exhaust outlet
on the rear panel of the instrument.
 Make sure that the unit is in basic SAMPLE Mode.
 Place a finger over a Sample inlet on the rear panel of the instrument.
 If gas is flowing through the analyzer, you will feel a vacuum suction at the
inlet.
07275B DCN6418