Leopard ERV
™ Operator’s Manual
© 2004-2011, IMI Cornelius Inc. - 3 - Publication Number: 620919579OPR
INTRODUCTION
Read this manual carefully to learn how to operate and maintain this valve. Failure to do so can result in loss of
valve performance.
Consider this manual a permanent part of your equipment file.
KEY THINGS TOKNOW / DO
For quality drinks – keep nozzles and the water/syrup system clean; and have the correct ratio, temperature, and
carbonation!
Make sure the correct syrup type has been connected!
Be sure the water filters are changed regularly!
OVERVIEW
Product Description
The
Leopard ERV
™ is intended for use on post-mix beverage
dispensing machines. The
Leopard ERV
™ is a purely
volumetric valve, which means it monitors and regulates the
volumes of water and syrup being dispensed. This allows the
valve to compensate real time to pressure changes and
maintain a constant ratio and flowrate.
As the
Leopard ERV
™ is dispensing a drink, it’s constantly
reacting to changes in water and syrup pressures in order to
maintain the selected finished drink ratio and flowrate. The
syrup flow is measured in real time utilizing pressure
differential and then regulated by a linear stepper motor. The
water flow is measured in real time by a flow turbine and
regulated by a second linear stepper motor. These two flow
measurements are input to a microprocessor which adjusts
the stepper motors to maintain flowrate and ratio. Figure 1
Sold Out Feature
The
Leopard ERV
™ has a built in “Sold Out” feature on all valves. A light is located on the front keypad face .
The “Sold Out” light informs the operator of insufficient flow from either the water or syrup.
During the sold out condition, the valve dispenses a small amount of product (Water and Syrup) and shuts off
regardless of how long the button or lever is activated. Once the water/syrup is replenished the “Sold Out” light
turns off and the valve returns to normal operation automatically.
Water Feature
Unlike other valves the need for a separate “Water Only” lever is no longer needed. This feature is now
accomplished electronically with a “Water” button located in the keypad. The keypad option can be added to
either a carbonated drink valve or a non-carbonated drink valve.
Recharge After Power Loss
The
Leopard ERV
™ requires the electronics board to charge the power backup system before operation. Drink
operation is suspended until valve is charged.
When power to the
Leopard ERV
™ is connected, the LED on the electronics board and keypad begins to flash
rapidly (approximately 2 times a second). When the valve is fully charged and ready for use, the LED on the
electronics board flashes slower (approximately 1 time a second). The LED on the keypad turns off.
