Sherwood SRB3600 manual External Air Leaks

6.5.4 External Air Leaks

1Attach the regulator first stage to a tank short enough to totally submerge the first and second stage in your filling station cooling water.

2.With the tank valve still turned off, flood the second stage completely with water, and then position it mouthpiece up.

3.Turn the tank air valve on slowly and then watch for any leaks in the first or second stage (except for the normal flow of air from the one-way bleed valve on the first stage). Look particularly closely at the first stage area where the adjusting module meets the body. If the module-to-body O-ring 18 is in the wrong groove, you will see air leaking from between the module and the body instead of from the black one-way bleed valve system.

4.Repair any leaks.

5.Check for the correct positive air purge flow rate. See Section 5.4, Testing of First Stage, for the proper method.

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