Leopard Valve Electronic Ratio Valve ERV Leopard valve

Leopard Valve Electronic Ratio Valve ERV

Leopard valve

ERV - Dimensions:

ERV - Functionality The ERV is a post-mix valve that uses a combination of sensors, stepper motors and a PC board to control flow rate and ratio. When the valve is actuated, a signal is sent to the PC board to start flow. The syrup and water modules open allowing soda (or water) and syrup to enter the mixing body. The PC board monitors water flow rate based on information sent by a small flow turbine. Syrup flow is monitored by two transducers (pressure sensors) located on the syrup module. The PC board calculates actual ratio and compares that to the programmed ratio. The PCB then adjusts the stepper motor positions as needed to regulate the flow rate and ratio. When the activation signal is released, the stepper motors close on both the syrup and water sides, completing the drink cycle.

ERV - Functionality The valve is programmed using a PDA or Tom. Cat device to set flow rate, and ratio. In addition, the PDA ( only ) can be used to obtain the following Diagnostic information 1. 2. 3. 4. 5. Valve Serial Number Current Flavor Finished Drink Ratio Flow Rate Total, syrup and water dispense volumes Since the valve is opened and closed using stepper motors, it has a backup power supply system that will not activate the valve until it is fully charged. This can take several (3 -4) minutes upon initial dispenser power up. If there is a power failure, the back up system provides power for the valve to close.

ERV - Features IMPROVED QUALITY: Electronically adjusts to provide correct water/syrup ratio on every dispense Ratio not affected by syrup temperature or system pressure changes Detects, indicates, & stops dispense when syrup or water are depleted to limit waste and poor served drink Excellent casual drink temperature performance

ERV - Features OPERATIONAL IMPROVEMENTS Ratio re-adjustments are not necessary Re-adjustments of volume portions are not necessary True volume controlled portions resulting in less crew intervention System information stored within valve memory Improved drink customer perception due to visual pouring without pulsating water and then syrup, continuous, quiet flow stream

ERV - Technical specifications: Power requirements Flow range Flow Control Ratio Range Ratio Control Supply Sold-Out 24 V, 50 or 60 Hz, 1 A 1. 5 oz/sec to 6. 0 oz/sec 45 ml/sec to 180 ml/sec Constant volume feedback loop for water and syrup. 3. 5: 1 to 10: 1 Ratio priority feedback loop for water and syrup. Indicator LED on front panel for water and syrup depletion automatic return to normal operation on replenishment of supply

ERV - Literature Brochure Installation Manual Service Manual Operator Manual Crew Training Manual Trouble Shooting Guide Illustrated Parts List Tom. Cat Manual Presentations: Commercial introduction Technical training

ERV - Approvals TCCC Authorization since June 2007 Mc. Donald’s Global release since April 2008 Agency listings

ERV - Issues Initial ERV Set-up device: Windows Pocket PC – HP i. PAQ Serial Communication Port 2008 – coming obsolete US Investigates: New Software based on Windows XP - Laptop New Software based on Windows Mobile - Handheld Enhance Tom. Cat device with diagnostics Coca-Cola “Red Brick” device (? ) Technician device: IMI-Cornelius development “Tom. Cat” Cheap and very easy to use No Diagnostics feature

ERV - Issues Open issue: Cleaning Syrup lines Solution: New development of Cleaning Plug Timeline: Field-test device available Production release June 2008 July 2008

What is a STEPPER MOTOR ? Stepper Motor Measures and controls water flow through the valve Flow Turbine

Stepper Motor Case contains rotor and bearings Linear Stepper Motor Shaft moves up and down to regulate flow through the VGroove

V – Groove Technology Stepper Motor Patente Shaft d V- Needle Valve Groove Flow Rate V-Groove gives linear flow control Cornelius Patent Position V - Groove

Flow Turbine Water Guide Vane Optical IR beam Transmitt is er interrupt ed by the rotor Optical Digital Device 6 pulses / ml Water Flow Rotor Optical Receiver

Pressure Transducer Syrup Pressure Transducer Differential pressure measured across an orifice plate Syrup Orifice Plate

Valve Setup Syrup Settings Syrup Type None Sugar Flow Curve offset sets flavor + offset Flow - offset Differential Signal from pressure transducer

RTD Flow Rate ONZ / sec ML / sec 1. 50 44 1. 75 52 2. 00 59 2. 25 67 2. 50 74 2. 75 81 3. 00 89