Amico Automatic Cryogenic Liquid Solenoid Manifold - Manual (Page 12)

12 Amico Pipeline
Display Functions
1. Introduce power to the control cabinet
2. Follow Cylinder Changing Procedures on the side of the cabinet to ensure that all tanks and fittings are secure and
properly connected to the header bar.
3. Check the indicator LED for proper functioning.
4. Open the Liquid Tanks one side at a time and press the “Push to Reset” button between the LED displays. One Green
LED, on the side which had the tanks opened first should be lit for In Use and the other side should have a Yellow
LED lit for Ready.
5. Close the Liquid tank valves on the primary (In Use) bank and watch the indicator LED to ensure proper functioning.
The primary bank pressure should decrease, while the secondary and line pressures stay constant.
6. When the primary bank pressure falls to approximately 100psi for all gases except Nitrogen which is 200psi, the
bank switch-over occurs. The line pressure will remain constant with the LED illuminating, indicating the In Use and
Empty banks. After replacing the depleted gas cylinders, open the liquid tank valves on the depleted side and press
the “Push to Reset” button and the Empty bank should become Ready.
7. With the Manifold wired to the Amico Master Alarm, the change-over from primary to secondary bank will cause
an audible alarm. The appropriate indicator LED on the Master Alarm will illuminate. This can also be achieved by
usingthe switch-over test button located on the back of the control board.
The Amico Automatic Manifolds are designed in accordance with the current revision of NFPA 99.
There are two categories of the Amico Manifolds. Depending upon the delivery pressure, the following gas types
are available.
55psi Delivery Pressure
• Oxygen, Nitrous Oxide, Carbon Dioxide
170psi Delivery Pressure
• Nitrogen
NOTE:
In the event of a power fluctuation or failure, a switch over alarm will be activated on the master alarm panels.
• Both the solenoid valves will open and supply pressure until both the banks are depleted.
• The solenoid will not prevent the flow from being supplied no matter which side is In-Use and until the system is
completely out of gas.