Amico Dome Loaded Manifold NFPA - Manual (Page 7)

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Description of Parts
An isolation valve ¾ “ with a locking handle, supplied with the
manifold, should be installed on top of the manifold connecting
to the main supply line.
MAIN LINE SOURCE VALVE
BANK REGULATOR
A dome loaded, single stage, diaphragm type regulator; used
to reduce incoming cylinder contents pressure to a lower
intermediate pressure. Bank regulator (one for each bank of
cylinders) has an internal adjusting spring used to set a “base”
pressure of approximately 100 PSI (200 PSI on Nitrogen manifolds).
“Dome” (i.e. bonnet or bell) of regulator is a pressure tight
chamber. When pressure is applied to the dome, the amount
of force applied is added to the force of the adjusting spring.
For example, when 55 PSI of pressure is applied to the dome, the
100 PSI base pressure setting is raised to approximately 155 PSI.
PRESSURE TRANSDUCERS
The pressure transducer senses the bank pressure and transfers in-
formation to the display board to indicate the In-Use, Reserve &
Empty mode. There are two transducers in the manifold cabinet,
one for the left bank cylinder and one for the right bank cylinder.
CHECK VALVE
A check valve is provided upstream of each bank regulator to
prevent back flow while servicing a bank regulator.
When replacement cylinders are attached to the depleted bank, the Red LED goes out and the Yellow LED illuminates
indicating that the bank has been automatically designated as the secondary supply. No other user interaction is
required. Both sets of dry contacts close to cancel any external alarm condition.