Viper Service Manual
© 2008-2016, Cornelius Inc.
- 17 -
Publication Number: 621260373SER
Water System
Incoming water flows to a water pressure regulator that is preset to 30 psig. It flows through the water booster pump,
to the regulator and through a sold-out switch.
Once through the boost pump, the water supply is split to each barrel and is fed to the water flow controls. From the
flow rate control, the water passes through a single ball check valve and mixes with the syrup in a wye fitting for
injection into the freeze barrel.
Syrup System
Syrup enters the unit through a sold-out switch. It enters a similar flow control to the water system, passes through a
single-ball check valve and into the wye fitting where it meets the water for injection into the freeze barrel.
C
ONTROL
P
ANEL
Introduction
The Viper unit uses a microprocessor based control system that monitors and controls all of the major systems and
components of the machine. Temperatures and pressures are monitored, along with pumps, valves and the
refrigeration system. They are managed by the control system to provide a consistently high quality product with
optimal efficiency.
The control system is set up by the service provider to perform the tasks necessary to keep the Viper unit operating
correctly. In addition to controlling the unit, the control system keeps track of the diagnostic information used when
adjusting and/or repairing the machine.
The control system needs to be accessed in the following situations:
• Installing the Viper
• Modifying Operating Characteristics
• Checking
Performance
• Servicing/Repairing the Machine
• Checking for Error Messages
The control system is accessed using the control panel located behind the lighted merchandiser. The control panel
contains an LCD display and buttons shown in Figure 11.
There are 2 levels of access to the control panel: The first level can be accessed by the operator for normal
operation and the second level is used by qualified service technicians for installation and service functions. The
service functions can be secured (locked out) so that an operator does not have access to them. The control panel
has a structured organization of menus. The outline of this structure is shown in Figure 12. The Maintenance sub-
menu is not visible when the security feature is on.
The first menu that is displayed after the unit is powered up and stabilized is the BARREL STATUS or HOME menu,
shown in Figure 11. This menu is displayed when the unit is running in normal operation.
Control Panel Display
The control panel display has two main areas. The first area is the menu display area. This area presents
information about the status and settings of the machine. It also displays menus of actions that are taken to modify
the functioning of the machine.
