E-BAM-9805 Manual Rev B.docx
Page 38
5.3 Advanced Leak Checks
If the basic leak check detailed in section 5.2 persistently fails, and the location of the leak cannot
be identified, the following procedures will help isolate the problem.
Required Tools
:
Leak Check Valve (Met One Instruments Part No. BX-305 or BX-302) Nozzle
Seal Tool (Part No. 7440)
5.3.1 Lower System Leak Test
Use this procedure to identify leaks between the vane and flow sensor.
1. Navigate to the TEST>LEAK TEST menu and press NOZZLE to raise the nozzle if needed.
2. Remove filter tape from nozzle area.
3. Insert the Nozzle Seal Tool without the hole between the nozzle and vane. Note the proper
alignment in the photo below.
Figure 5-3 Nozzle Sealing Tool Lower System Test Configuration
4. Press NOZZLE to lower nozzle onto the sealing tool.
5. Verify the leak check valve is open and then press the PUMP ON button to turn on the pump.
Monitor the flow rate on the E-BAM display until it stabilizes.
6. If the flow rate falls below 1.5 lpm, the leak is not in the lower system. Turn off the pump and
proceed to section 5.3.2.
7. If the flow rate does not fall below 1.5 lpm, there is a leak located in the tubing or fittings
between the vane and flow sensor. Contact the Met One service team for resolution.
8. Repeat the above steps until the leak has been identified and corrected.
9. Remove the rubber sealing tool, remove the leak check valve, install the tape and replace
the size selective inlet(s).
10. Return to the Operate Menu and select START SAMPLE to resume normal operations.
