25
Part No. 6-847703-00 Rev. C00
Installation
Leak Testing
The following leak testing is recommended if a
leak is observed during previous Initial Power-Up
and Operational Testing procedure. If a noticeable
drop in any pressure gauge reading was not
detected, this leak testing is not required.
1. Release two latches on sides of manifold
cover (one on each side). Remove cover as
shown in Figure 17.
2. Close 3/4" source shut-off valve.
3. Verify isolation valves on inlets and outlets of
line regulators are open.
4. Slowly open one liquid container on left bank
and one high-pressure cylinder on right bank
of manifold.
5. Slowly open one high-pressure cylinder on
reserve header assembly.
6. Close two internal isolation valves on INLETS
(lower valves) of line regulators. (Refer to
Figure 18 for component location).
7. Close liquid container on left bank of manifold.
Close high-pressure cylinder on right bank of
manifold and reserve header assembly.
8. Record pressure readings of manifold left and
right bank contents gauges, manifold line
pressure gauge, and reserve header contents
gauge.
9. Wait 15 minutes.
10. Compare current readings of all four gauges to
those recorded in step 8.
11. If a loss of pressure is noted on any gauge,
leak location may be further narrowed as
follows:
• A loss of pressure on manifold line
pressure gauge indicates a leak
downstream of closed line regulator inlet
isolation valves.
• A loss of pressure on left manifold
contents gauges indicates a leak in
components on left side of manifold
upstream of left line regulator inlet
isolation valve.
• A loss of pressure on right manifold
contents gauges indicates a leak in
components on right side of manifold
upstream of right line regulator inlet
isolation valve.
• A loss of pressure on reserve header
cylinder contents gauge indicates a leak
within reserve header assembly or piping
connecting reserve header to bottom of
manifold.
12. Locate leak by applying a small amount of an
oxygen compatible leak detector solution while
manifold is under pressure. Formation of
bubbles indicates a leak. Since manifold is
factory leak tested, suspect those items first
that were added during installation process.
For example, main outlet union fitting, reserve
header piping and union fitting, etc.
13. Eliminate leaks by tightening or replacing
connections or tubing. Retest and verify all
leaks have been eliminated.
14. Open line regulator isolation valves.
15. Reinstall manifold control panel cover.
16. Slowly open all manifold left bank liquid
containers, right bank high-pressure cylinders,
and reserve header high-pressure cylinders.
17. Open 3/4" source shut-off valve.
CAUTION:
Avoid getting leak detector solution onto
electrical components. Wipe off excess leak
detector solution after testing.
