41
Part No. 6-847703-00 Rev. C00
Bank Regulator Adjustment
The following procedure describes process of
setting bank regulator's "base" pressure. This
procedure should only need to be performed if
bank regulator pressures were not within
acceptable limits during performance verification
procedure or after installation of a new bank
pressure regulator.
Base pressure setting is a mechanical
adjustment controlled by regulator's internal
adjusting spring and is regulator's output pressure
without any dome bias. After base pressure has
been set, pressure will be increased by amount of
dome bias pressure applied. Refer to Figure 19
for location of components called out in this
procedure.
1. Remove two front panel screws A (Figure 24).
Loosen two hinge screws B. Fold front panel
down to service position as shown in Figure
25. Lightly tighten two hinge screws.
2. Close service valve.
3. Using control board switches, cycle manifold
from bank to bank to vent residual dome bias
pressure.
4. Using 1/4" Allen wrench, remove pipe plug
from dome of bank regulator(s) to be adjusted.
5. Shut off all liquid containers and high-pressure
cylinders on both banks of manifold.
6. Shut off all high-pressure cylinders connected
to high-pressure reserve header.
7. Open vent valve to vent all pressure from
manifold.
8. Close vent valve and slowly open one liquid
container or high-pressure cylinder on side of
manifold that needs adjustment. For example,
if right bank regulator needs adjustment, open
one high-pressure cylinder on right side of
manifold.
9. Slightly open vent valve to create a small flow
of gas through manifold.
10. Using 1/4" Allen wrench, set bank regulator to
the value specified in Table 1, page 27
(Intermediate Pressure - Ready Bank).
11. Close vent valve and cylinder.
12. If other bank regulator also needs to be
adjusted, repeat steps 7 through 11.
13. Apply Teflon tape and reinstall pipe plug in
dome of bank regulator(s).
14. Loosen front panel hinge screws and return
front panel to its upright position. Reinstall two
front panel screws and tighten hinge screws.
15. Slowly open all liquid containers and high-
pressure cylinders on both manifold banks.
16. Slowly open all high-pressure cylinders on
reserve header.
17. Open service valve.
NOTE:
By closing service valve, manifold's outlet
pressure gauge is also isolated. Cycling
manifold to vent residual dome bias pressure will
also vent pressure shown on manifold's outlet
pressure gauge. Actual outlet pressure supplied
by manifold is not affected by following
procedure.
Testing and Adjustments
