Serinus 44 User Manual 3.0
Figure 57 – NH3 Scrubber
6.3.5 Leak Check
Equipment Required
Source of Vacuum (pump)
Leak Test Jig (PN: H050069)
Kynar ¼” Blocker Nuts
Tubing and Assorted Fittings
5/8” Spanner
9/16” Spanner
Procedure
Note: Ensure that the instrument has been running for at least one hour before this procedure is
performed.
1. Disconnect all external tubing connected to the rear ports of the instrument except for the AUX
in Port and AUX Out Port (for the external converter).
2. Connect a leak check jig to the Exhaust Port of the instrument.
3. Connect a vacuum source to the shut off valve end of the leak test jig ensuring the shut off valve
is in the open position.
4. Open - Main Menu Service Menu.
5. Select - Ozone Gen. Control Off.
6. Allow the instrument two minutes to purge the O3 from the pneumatic system.
7. Open - Main Menu Service Menu Diagnostics Menu Valve Menu.
8. Disable - Valve Sequencing Disabled.
9. Turn Off all the valves except the Sample/Cal valve.
10. Block the BGnd Air Port.
11. Allow the instrument time to evacuate the pneumatic system (the time required will depend on
the vacuum source used).
12. Close the shut off valve and record the vacuum. Wait for three minutes and observe the gauge on
the leak check jig. It should not drop more than 5 kpa (37.5 torr). If the leak check passed skip to
step 15.
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