Viper Service Manual
Publication Number: 621260373SER
- 12 -
© 2008-2016, Cornelius Inc.
An overall schematic of the three delivery systems contained in the unit are shown in Figure 8., Figure 9. and Figure
10. The CO
2
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.
CO
2
System
A CO
2
tank or bulk CO
2
supply delivers carbon dioxide gas (CO
2
) to an adjustable secondary CO
2
regulator
assembly that is attached to the tank as shown in Figure 7. The CO
2
system also supplies CO
2
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.
FCB Unit
yl
p
p
u
S
2
O
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
W
ater 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 F
eet
J
K
K
K
K
F
3 F
eet Typical
115 Psig
75 Psig
75 Psig
Figure 7. Cylinder CO
2
Connection
