Amico Dome Loaded Manifold NFPA - Manual (Page 26)

26 Amico Pipeline
Line Regulator Pressure Adjustment
This procedure should be performed if the line regulator pressures are not within acceptable limits during the
Performance Verification 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
regulator to be adjusted.
2. Slightly open/depress the bleed valve on the side of the regulator to create a small flow of gas though the
manifold.
3. Using the handle on the bonnet of the regulator, turn to adjust the pressure to the specified setting 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 specified setting, open all ball valves and ensure the supply line remains open.
If necessary, the line regulator replacement can be performed while the manifold is in service. However, this should only
be done by qualified technicians experienced in servicing medical equipment.
1. Close the two ball valves on the inlet and outlet of the line regulator to be replaced.
2. Loosen union nuts on two closed isolation valves.
3. Vent pressure from the bank, which was shut off in step 2, by depressing the bleed valve on the side of the
regulator.
4. Ensure the orientation of fittings (direction of gas flow) is the same on the replacement regulator. Install fittings on
the new regulator.
5. Inspect the O-ring removed from the ball valve union. If damaged, replace O-ring.
6. Verify the correct orientation of fittings on the regulator, some slight adjustment may be required to align with the
ball valves without causing stress to the fittings.
7. Hand-tighten the two ball valve union nuts and then, with a wrench, lightly tighten to ensure the fittings are
secure. NOTE: do not over-tighten unions, as it is an O-ring seal.
8. Open the ball valves and set the line regulator’s output pressure as described in the Line Regulator Pressure
Adjustment procedure.
Line Regulator Replacement