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Constant Flow Valve System
The CFV system consists of:
•
External source to pump syrup
•
Inlet water pressure requirement 30 - 80 psi
•
Syrup pressure requirement 40 - 80 psi
•
Syrup constant flow valve with orifice
•
Water constant flow valve
•
Water flow adjuster valve
•
Electric syrup solenoid valve
•
Pressure switch/syrup
•
Electric water solenoid valve
•
Refill circuit board or circuit
•
Hopper level probe
The activation of the refill circuit starts with selecting the "Auger Refill On" mode from the auger On/Off switch on the
user panel. Once the mode has been enabled, CBA monitors the condition of the hopper level probe and will activate
the corresponding components to allow product to flow into the hopper when needed. A CO
nected to a CO
tank will pump the syrup under an operating pressure of 40 - 80 psi. The pressure requirement plays
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an important role in the CFV system designed to assure product ratio delivery.
The syrup and water electric solenoid valve will energize to allow fluid to pass through the valves and into the con-
stant flow valves. The constant flow valves are designed to open under a set pressure and will allow fluids to pass
on through. The syrup constant flow valve has an orifice mounted on the outlet side of the CF valve, which sets the
product flow rate as constant while the water side has a water screw adjustment valve that can be used to increase
or decrease water flow coming into the hopper.
The regulated syrup and water lines connected to the hoppers simultaneously fill the receiving hopper until product
touches the level probe and will shut-off. If the "Delay Refill" option is enabled, the product will be dosed in incre-
ments until it reaches the level probe.
The fill system incorporates another component called a pressure switch that is mounted on the syrup electric sole-
noid valve base. The purpose of the switch is to de-energize the syrup and water valves in the event of a pressure
drop below a set psi point mandated by the pressure switch to prevent inaccurate delivery of ratio product into the
hopper.
The external pump method consists of:
•
CO
supply with pressure regulator
2
•
CO
syrup Bag-in-Box pump
2
•
Syrup pressure requirement 40-80 psi
•
Product with B.I.B. connector
•
Stainless steel fittings
•
Flex hose and oetiker clamps
CO2 Syrup Bag-in-Box Pump Operation
The CO2 supply with recommended psi connects to the CO2 pump. When the refill circuit is activated to fill the
hopper with product, the electric syrup and water valves open. The opening of the syrup valve will activate the CO2
pump. Generally, CO2 pumps have an internal shut-off that stops the pump from operating when high vacuum builds
up on the inlet side, which is how the pump indicates that the Bag-in-Box is empty and needs to be replaced. If the
product in the hopper is below the level probe when a new Bag-in-Box is connected, the pump will automatically
resume operation until product touches the level probe. The placement of CO2 pump and supply needs to be in a
well ventilated area or a hose will need to be connected to the pump gas discharge fitting and routed to an open area/
atmosphere.
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Ultra Training Manual
syrup pump that is con-
2
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