PRESSURE TEST VENT SYSTEM
On main or aft tank (7) only, hold elbow (8) with
wrench and disconnect hose (9). Install plug in
Make sure shutoff valve (10) and vent valve (11)
are closed. Connect hose (12) from test setup to
elbow (8) on main or aft tank (7), or hose (13) in
forward tank (14).
Slowly open shutoff valve (10) until gage (15)
indicates 20 psi. Close valve.
Wait 5 minutes and check gage (15). If gage
indicates 20 psi, go to step 8. If gage indicates
less than 20 psi, go to step 7.
CHECK FOR LEAKS
Check for leaks as follows:
Check test setup upstream and downstream
of valves (10 and 11), and gage (15). Use
mixture of soap (E353) and water, and
brush (E85). Allow system to remain under
pressure for 15 minutes. If bubbles grow in
size, connection is leaking. Tighten leaking
connections or replace packings as needed.
Also check all joints, seams, and cast
components. Repeat steps 5 and 6.