Table of Contents
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Table of Contents
Related Manuals for Bunn ULTRA
Summary of Contents for Bunn ULTRA
- Page 1 BUNN TECHNICAL TRAINING ® Ultra...
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Page 2: Table Of Contents
Refill Threshold (Ultra with LAF Kit Installed) ..............30 Temp and Torque Screen ....................31 Warning Messages ......................31 Error Messages ........................33 Product Does Not Freeze or Form Ice Crystals ............... 34 Torque Sensor Board ......................35 Thermistor ........................... 35 Ultra PAF Error Messages ....................36 Triac Maps ........................... 36 © 2010 Bunn-O-Matic Corporation. All Rights Reserved Rev. A... -
Page 3: Unit 1: Installation
Unit Objectives Given a realistic scenario depicting a new site install, the learner will be able to install and setup the ULTRA for customer turnover without error. Given a new machine, all the necessary tools and safety equipment, the learner will be able to install the ULTRA without error. -
Page 4: Site Requirements
Dispenser performs better if not placed near any heating appliance that exhausts heat on and around dispenser. • Ultra-1 approx. dimensions (H 32 x W 8 x D 24.5) • Ultra-2 approx. dimensions (H 32 x W 16 x D 24.5) Plumbing (PAF Only) •... -
Page 5: Hopper Assembly
Step 3: Place the machine in the desired location on the counter. Do not lift the Ultra by the drum(s). Step 4: Document the complete serial number of the machine. Step 5: Remove and save the black plastic drum support(s). This will be used as a servicing jig later. -
Page 6: Powder Autofill (Paf) Installation (Optional)
Step 6: Press the seals firmly into Step 5: Install each hopper seal over the flange Step 4: Plug RCA cord into Ultra place. at the rear of the cooling drums as shown. base unit. -
Page 7: Liquid Autofill (Laf) Installation (Optional)
The Brix pump should be placed as close to the concentrate supply as possible. • The Brix pump mounting placement should be the same level or slightly higher than the concentrate BIB. • Ease of access to the brix pump and sanitize valve for sanitizing procedure. Bunn-O-Matic Corporation... - Page 8 ULTRA-2 INSTRUCTIONS FOR INSTALLING LIQUID AUTOFILL KITS INTRODUCTION These instructions are for installing the Liquid Autofill Kits on Autofill ready ULTRA-2 cold drink dispensers. There are three different kits available: 37960.0000 ULTRA-2 Liquid Autofill Kit 120V with Separate Water Lines 37960.0001...
- Page 9 White wires to the right valve(s), left probe. with screws provided. Blue and white wires to the left valve(s). Please note that Left and Right are from the front of the machine, Users left and right. 37570 072706 Bunn-O-Matic Corporation...
- Page 10 25. Install snap clamps on to hoses just Turn on pump system and water sup - above the bushings to prevent hoses ply. Check all tubing connections for from being pulled loose from the so - leaks. lenoid valves. (continued) 37570 072706 Ultra Training Manual...
- Page 11 29. At the test re ll screen, select yes. 30. The Activate Valve screen will allow you to test the pumping and re ll circuit. Press and hold the ULTRA button to activate the left re ll system. Con rm that the left side is lling when the ULTRA button is pressed. Release the ULTRA button to stop the lling process.
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Page 12: Unit 2: Setup
Unit Objectives Given a realistic scenario depicting a new site install, the learner will be able to install and setup the ULTRA for customer turnover without error. Given an installed machine, all the necessary tools and safety equipment, the learner will be able to set the machine up for initial operation. -
Page 13: User Interface
To access the programming mode, and to scroll through the different function screens, hidden programming switches are used. Press and hold for five seconds the “Gourmet” button to enter into the programming menus. “ULTRA” (left under display) When prompted by a selection from the menu to answer yes or no, the “ULTRA” switch is used to answer “NO” or (-) minus. “GOURMET” (center under display) Press and hold this switch 5 seconds to access the Menu Function Index. -
Page 14: Setup
Allows the operator to set the DATE (YY MM DD) and TIME (HR MIN SEC) for display on the Home Screen. Step 1: Press and hold the Gourmet switch until the display screen reads “Cleaning Guide?”. Step 2: Press and release the Gourmet switch until the “Date/Time” setting option appears in the display screen. Ultra Training Manual... - Page 15 “ICE” will change to “CHILL” during the night mode. During the night mode, the product will be kept chilled to below 35°F. “ICE” reading will return after night mode elapses. With “OFF” representing 12:00 AM, the operator can scroll to the times desired for the night time mode to begin and end. Step 1: Press and hold the Gourmet switch until the display screen reads “Cleaning Guide?”. Bunn-O-Matic Corporation...
- Page 16 This function allows the operator to program a cleaning schedule from 1 to 14 days. Delayed Refill This function allows the operator to dose in small amounts of new product while delaying between doses. This can help the already frozen product from becoming diluted and not ready to serve. These delay and fill times are to be determined and set based on each application as desired by the end user. Enable Refill (Ultra-1 Only) This function will activate the Liquid Autofill function only in machines equipped with the LAF option. Ultra Training Manual...
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Page 17: Product Preparation
Step 2: The delivery rate of the water ingredient is factory preset to 1 fl.oz. per second. Therefore, it is only neces- sary to adjust the delivery rate of the powdered granita mix. Step 3: Place the PAF on top of a fully assembled ULTRA taking care to align the PAF guide rails over the rollers on the platform guide rails. -
Page 18: Laf - Liquid Concentrate Set-Up (Brix Ratio)
Step 7: Connect the tubes to the hopper quick connect connectors. Keep- ing the water and concentrate line accordingly to the correct hopper on a two hopper machine. Step 8: Turn on the water supply and the machine is now ready for start up and initial fill of the hopper. Ultra Training Manual... -
Page 19: Ultra 1 And 2 Start Up With Laf
Step 2: Apply power to the machine. Step 3: Press and release the (ON/OFF) switch to power on the machine. Step 4: ULTRA with LAF option: Press and release the appropriate (ON/OFF) auger switch until the appropriate “Auger Refill On” mode is selected. This mode activates the motor and refill circuit in unison and will automatically maintain the level of product in the hopper to the probe level. -
Page 20: Unit 3: Machine Composition
achine oMposition Unit Objectives Given a realistic scenario in which the learner has access to the machine’s internal components the learner will under- stand the composition and functions of the machine. Given a realistic scenario requiring the learner to access the internal components of the machine the learner will be able to remove the top motor covers, side panels and front control panel. -
Page 21: Exterior Overview
Removing the Enclosure The majority of the service work done to the ULTRA will require the service technician to access the inside of the machine. The ULTRA enclosure is comprised of two side panels, front control panel and two top motor covers to facilitate access to the refrigeration and electrical components. - Page 22 Left Side Panel Removing the left side panel will give you access to the refrigerant solenoids, hot gas sensor/thermistor and optional LAF water valve/ULTRA-1 only. How to Remove The left side panel is attached by 2, 1/4 inch hex slotted screws on the underside. Remove or loosen the screws and the panel is now ready for removal by pulling downward and out.
- Page 23 Right Side Panel Removing the right side panel will give you access to the hood light relay, lamp circuit breaker, compressor relay, stepdown trans- former, condenser fan/ULTRA-2, compressor starting components and optional LAF water valve/ULTRA-2 only. How to Remove The right side panel is attached by 2, ¼ inch hex slotted screws on the underside.
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Page 24: Machine Function And Operations
The amount of time for the delay is based on the cooling drum temperature. For instance, if the thermis- tors sense that both barrels, (one for Ultra-1), are above 50º F when the machine is powered up, the delay time is 1 minute. -
Page 25: Temperature Sensing System
1 and minus 2. This means that the valve will turn off above 31 and will not come back on until it drops below Temperature Sensing System The Ultra uses a thermistor to monitor the actual temperature of each cooling drum. Night and Chill modes maintain 35º F, instead of the torque sensing board (product thickness). -
Page 26: Unit 4: Preventive Maintenance
reventive aintenance Unit Objectives Given a realistic scenario depicting a machine requiring a preventive maintenance, the learner will be able to identify which elements of a component need to be serviced without error. Given a machine, all the necessary tools and safety equipment, the learner will be able to identify the components that need to be serviced for the PM. -
Page 27: Tools Required
Prior to servicing the ULTRA: • The ULTRA has an optional menu setting that may alert the operator when Preventive Maintenance is due by displaying a message on the display, the message will read “Shaft Seal Maintenance Due”. The message will not shut down the machine if the service is not performed. The technician will need to be aware to reset the menu by answering “yes” in the “PM Complete ?” menu located in the programming section. Be aware that the menu might... - Page 28 □ Refer to the Installation and Operating Manual, “Menu Function Index”. Scroll to menu “PM Complete?” and answer “YES” to reset the remind er message “PM Due”. Lube about 1 ” of shaft and in the groove with BUNN P/N: 29563.0000 “Krytox” Lubricant Figure 3 Faucet Seal Figure 4 Figure 5 Step 2: Air Filter □...
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Page 29: Unit 5: Troubleshooting
roubleshooting Unit Objectives Given a realistic scenario depicting one of several possible machine malfunctions, the learner will be able to effectively troubleshoot, diagnose and repair the malfunction before returning the machine to normal operation. Given a machine displaying an error or warning message, all the necessary tools and safety equipment, the learner will be able to access the programming and use component test menus as a tool to assist in the diagnosing process. -
Page 30: Test Menus
The water threshold is factory set at 155, a common threshold used throughout the Bunn beverage equipment. The number on the left can be used as a tool to see the operation of the refill circuit and can be adjusted accordingly to the conductivity (TDS) of the product or water. The threshold 155 normally will not need to be adjusted on the Ultra machine but is mainly for geographical areas where naturally soft water is present or customers using water purifica- tion systems (reverse osmosis) on coffee equipment. -
Page 31: Temp And Torque Screen
Press and hold for five seconds the ULTRA and ICE hidden switches to display the TEMP & TORQUE. The tem- perature of each cooling drum and the hot gas temperature will toggle back and forth. The auger torque is displayed continuously during machine operation. Press and release the ULTRA and ICE hidden switches to return to HOME SCREEN. The TEMP & TORQUE mode is typically used for service. Notice: While in the TEMP & TORQUE screen, the UPPER/lower case will be replaced by symbols. The symbol is used for reference, illustrating when the solenoid is on or off. - Page 32 I/O (ON/OFF) switch and allow the barrels or cooling drums to warm over 50°F. Scroll to the Cleaning Guide and perform the cleaning service. The barrels will warm to over 50°F when cleaned with warm water and the message will disappear. Clean Due Today CLEAN Due Now Ultra Training Manual...
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Page 33: Error Messages
Error Messages Bunn-O-Matic Corporation... -
Page 34: Product Does Not Freeze Or Form Ice Crystals
The machine thinks the product thickness has reach the maximum and shuts off the compressor. The illustration below shows some of the other possible causes for a false reading from the torque sensor board. Normal Operation Possible Causes for False Readings Ultra Training Manual... -
Page 35: Torque Sensor Board
5vdc, replace thermistor. Resistance Check Disconnect the plug on thermistor leads and check resistance as indicated below. The indication must be: a) 5650 ohms @ 32° F ± 10% b) 2000 ohms @ 77° F ± 10% Bunn-O-Matic Corporation... -
Page 36: Ultra Paf Error Messages
Normal operation the Powder Autofill is ready to dispense. Flashes On/Off at 50% duty cycle Low product level in Powder Autofill hopper. Two flashes about every 2 seconds Ultra/Powder Autofill probe circuit open. Three flashes about every 2 seconds Powder Autofill hopper not in place. Four flashes about every 2 seconds Ultra refill exceeded 5 minutes. Door not closed. Ultra 1 Triac Map 1. TH1 = Auger 2. TH2 = Compressor Relay 3. TH3 = Refrigeration 4. TH4 = Refill Valve (not currently offered) 5. Q4 = Fan Ultra Training Manual... - Page 37 Ultra 2 Triac Map (Bunn P/N 38710.xxxx) 1. TH6 = Right Auger 2. TH5 = Left Auger 3. TH4 = Right Refrigerant Valve 4. TH3 = Fan 5. TH2 = Compressor Relay 6. TH1 = Left Refrigerant Valve Bunn-O-Matic Corporation...
- Page 38 Ultra LAF Triac Map (Bunn P/N 38983-0000) 1. Right Fill Valve (TH1) 2. Left Fill Valve (TH2) Ultra Training Manual...