Part Number: 2A33687
Release Date: 8/27/2015
Revision: B
14
Standard Gauges – Calibration Guide Cont.
STEP 5
The use of the Tattle-tale will allow the user to indicate if there is a Nitrogen leak present during calibration. This
applies to both a stand-alone Nitrogen Relief Valve and the Control Panel option. The Tattle-tale has two
positions, as shown.
To set the backpressure, follow this procedure:
Slowly decrease the back pressure regulator (BLUE dial- C) until the Tattle-tale pops. This is an
indication that the Nitrogen is venting.
Slowly increase the back pressure regulator (BLUE dial –C) until the Tattle-tale is able to be pushed in
and remains closed.
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