Cornelius 3 service manual Programmed Defrost Scheduling, Viscosity Setting, CO2 Setting

Viper Service Manual

Programmed Defrost Scheduling

The control system in the Viper system includes a function to automatically defrost product in the barrel at programmed intervals based on the viscosity of the product. Programmed defrosts are scheduled frequently to ensure that product quality within the barrel is maintained. Failure to defrost regularly during periods of low throughput allow increased ice crystal size, with a possible decrease in product quality. Regular throughput of dispensed product replenishes the barrel frequently with liquid and reduces the requirements for programmed defrosts. The unit automatically senses the lack of throughput and maintains the product quality by defrosting the barrels more frequently when throughput is slow.

Sleep Mode Recom- mendations

Cornelius recommends programming a sleep period for the machine during any amount of time over 3 hours that the unit is not used. This increases the life of the machine and reduces energy consumption.

A wakeup time must be programmed after the sleep period to return the unit to nor- mal operation. Cornelius recommends programming the wakeup time for approxi- mately 20 minutes before the product is needed. This is the time recommended if the ambient temperature is at 75°F. The times will vary depending on the ambient temperature (a higher ambient temperature requires more time for the product to cool).

Viscosity Setting

The control system includes a function to select the desired product viscosity. This function is referred to as “Viscosity Setting”. There are selectable viscosity ranges from 1-9. The higher the number selected, the more viscous the frozen product in the barrel becomes. This increased viscosity is achieved by freezing the product in the barrel to a lower temperature thereby increasing ice crystal size/growth. As the ice crystal size increases, however, there is potential for product quality to diminish.

Cornelius recommends that the viscosity settings be set at the lowest possible set- ting to achieve the desired drink quality. In most typical installations using a sugar- based syrup, acceptable drink quality can be achieved by programmed viscosity set- tings in the range of 3-5 for Viper.

Diet FCB syrups freeze much more readily than sugar based syrups, so the viscosity set- ting should be selected at the minimum value available (which is 1 or 2 for the Viper).

CO2 Setting

The control system includes a function to adjust the desired product overrun. This function is referred to as the “CO2 Setting”. This setting is adjustable from 0 to 100% in 5% increments.

Typically, 40 to 45% settings on the pulse valves creates 100% overrun.

Publication Number: 621360041TBSER - 40 - © 2010, IMI Cornelius Inc.