Viper Low overrun Service Manual
Publication Number: 621360241LOEWSE - 8 - © 2016, Cornelius Inc.
An overall schematic of the three delivery systems contained in the unit are shown in Figure 5. The CO2 system is
on top, the water system is in the middle and the syrup system is at the bottom of the diagram. The CO
2 system
interacts with both the water and syrup systems. It provides pressure and carbonation for the syrup/water product
mix.
CO2 System
A CO2 tank or bulk CO2 supply delivers carbon dioxide gas (CO2) to an adjustable secondary CO2 regulator
assembly that is attached to the tank as shown in Figure 4 The CO
2 system also supplies CO2 to the water boost
pump, the expansion tank regulator and the secondary CO
2 tank regulators.
CO
2 enters the expansion tank regulator and is reduced to approximately 30 psig to feed holding pressure on the
expansion tank. This provides a force to work against the barrel pressure when the product freezes and expands.
CO
2 also enters the secondary regulators. These regulators are used to adjust barrel overrun/expansion for various
products. The pressure settings for various types of syrup are shown in Table 1. Overrun CO
2 pressure is applied to
the CO
2 control solenoids through preset orifices and on to the in-line check valves.
From the in-line check valve, the CO
2 flows into the product line.
Figure 4. Cylinder CO2 Connection
FCB Unit
ylppuS2O
C
BIB Syrup
BIB Syrup
BIB Pump
C
E
D
A
F
I
Water Filter
Connections
Tubing
1/2 Inch Beverage Tubing
3/8 Inch Beverage Tubing
1/4 Inch Beverage Tubing
3/8 Inch Tygon Tubing
A
B
C
D
E
F
1/2 Inch Hose Barb to 3/4 NPT
1/4 Inch Female Flare Nut and Barb (1/4)
Direct Connection to Syrup
Outlet on Syrup Pump
Direct Connection to CO2
Inlet on Syrup Pump
Direct Connection to Syrup
Inlet on Syrup Pump
1/2 to 3/8 Inch Fitting Reducer
Water Inlet
Syrup Line 1
Syrup Line 2
CO2 Inlet
BIB Syrup
BIB Syrup BIB Pump
C
E
D
G
BIB Pump
C
E
D
BIB Pump
C
E
D
Syrup Line 3
Syrup Line 4
G
¼ Inch Cross Barb
K
H
J
H
CO2 Regulator
I
3/8 Inch TEE Barb
J
3/8 Inch Flare Nut and Barb (3/8)
K
3/8 to 1/4 Inch Fitting Reducer
H
H
B
Max 3 Feet
J
K
K
K
K
F
3 Feet Typical
115 Psig
75 Psig
75 Psig