Performing Leak Checks - Teledyne 400E Instruction Manual

Model 400E Ozone Analyzer
Instruction Manual

9.3.4. Performing Leak Checks

Leaks are the most common cause of analyzer malfunction; Section 9.3.4.1
presents a simple leak check procedure. Section 9.3.4.2 details a more thorough
procedure.
9.3.4.1. Vacuum Leak Check and Pump Check
This method is easy and fast. It detects, but does not locate most leaks, it also
verifies that the sample pump is in good condition.
1. Turn the analyzer ON, and allow enough time for flows to stabilize.
2. Cap the sample inlet port.
3. After 2 minutes, when the pressures have stabilized, note the SAMP FL and
PRES test function readings on the front panel.
4. If SAMP FL < 10 CC/M then the analyzer is free of any large leaks.
5. If PRES < 10 IN-HG-A then the sample pump diaphragm is in good condition.
P/N 04316 Rev: B
MAINTENANCE SCHEDULE & PROCEDURES
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