Amico Dome Loaded Manifold Nema-4 NFPA - Manual (Page 11)

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Display Functions
1. Introduce power to the control cabinet.
2. Follow Cylinder Changing Procedures on the side of the cabinet to ensure that all cylinders, fi ttings are secure and
properly connected to the Header bar.
3. Check the indicator LED for proper functioning.
4. Only one Green LED, on the side which had its operating regulator set fi rst, should be lit and the other side should
have an Yellow LED lit.
5. Close the cylinder valve on the primary bank and watch the indicator LED to ensure proper functioning. The primary
bank pressure should fall, while the secondary and line pressures stays constant.
6. When the primary pressure falls to approximately 120psi for all gases except Nitrogen 220psi the bank switch
over occurs, the line pressure will remain constant with the LED display indicating the bank In-use.
7. With the Amico Automatic Gas Manifold wired up to the Amico Master Alarm, the changeover from primary to sec-
ondary supply will cause an audible alarm buzzer and the appropriate indicator LED on the Master Alarm will illuminate.
This can also be achieved by using the switch over test button located on the back of the control board.