Sun Microsystems DGA 5000, Руководство оператора

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More frequent filter service will be required when:
- The analyser is in constant use.
- Testing vehicles not warmed up to normal operating temperature.
- Testing vehicles with very high emissions.
9.6.3 Sample Probe and Hose
Periodically check the inlet holes at the probe tip for dirt and debris. To
clean:
•
Disconnect the sample hose from the analyser at the sample inlet.
•
Clean the probe tip using a small pointed tool or piece of thin wire.
•
Blow any remaining debris away using compressed air.
Do not apply compressed air to the probe tip without first
disconnecting the sample hose from the sample inlet.
Backpressure could damage the sampling system.
The sample hose should be free of any cuts or abrasions that may cause
leaks. Follow the leak check procedures in this manual and replace any
damaged hoses.
Use the following test/repair procedure if the analyser fails a Leak Check
(Vacuum) or a Leak Check (Gas) :
1. Ensure that assembly connections on the exhaust sample probe and
filters are tight.
a. If tight, continue with step 2.
b. If loose tighten and repeat the leak check.
c. If the analyser fails the leak check, proceed with step 2.
2. Remove the sample probe from the hose and plug the hose. Repeat
the leak check.
a. If the test fails, continue with step 3.
b. If the test is successful, install a new sample probe and repeat
the test to check for other leaks.
c. If the test still fails, continue with step 3.
3. Remove the exhaust sample hose from the inlet fitting and plug the
inlet fitting. Repeat the leak check.
a. If the test fails, proceed with step 4.
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