Amico Dome Loaded Manifold Nema-4 NFPA - Manual (Page 26)

26 Amico Pipeline
Should it be necessary to replace the bank regulator, it can be done while the manifold is in service. However, this should
only be done by qualifi ed technicians experienced in servicing medical equipment.
1. Remove two top screws at the base of the display board bracket and bend the display board assembly back for
easy access to the union nuts that secures the bank regulator. (Follow label instructions)
2. Close all cylinders on the side of the manifold where the bank regulator is to be replaced.
3. Ensure that the service bank is the reserve / secondary, if not cycle the manifold from In-use to reserve by using the
circuit board control switch to vent residual dome bias pressure.
4. Slowly break the 1 1/8” union(s) allowing gas to slowly vent out from both the inlet and outlet side of the bank
regulator.
5. Remove nylon tube from regulator dome.
6. Install new regulator bank regulator. (May require slight adjustment to the fi ttings on the regulator to align with
the secure fi ttings on the manifold).
7. Tighten union nut on the inlet and outlet of the new bank regulator.
8. Reinstall nylon tube.
9. Close display board assembly and attach bracket with the 2 screws.
10. Slowly open cylinders and set bank regulator’s output pressure as described in Bank Regulator Pressure Adjustment
procedure.
Line Regulator Pressure Adjustment
This procedure should be performed if the line regulator pressure are not within acceptable limits during performance
verifi cation procedure or after installation of a new line regulator.
1. With both the bank regulators supplying pressure, open only one ball valve on the inlet and outlet of the line regu-
lator to be adjusted.
2. Slightly open/depress the bleed valve on the side of the regulator to create a small fl ow of gas though the manifold.
3. Using the handle on the bonnet of the regulator, turn to adjust the pressure to the specifi ed setting, as mentioned
on the cabinet door by observing the line gauge.
4. Repeat (steps 1-3) to adjust the other line regulator.
5. After adjusting the pressure to the specifi ed setting open all balls valves and ensure the supply line remains open.
Bank Regulator Replacement