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ULTRA-1
ULTRA-2
SERVICE & REPAIR MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
41084.0000B 04/10 ©2009 Bunn-O-Matic Corporation
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BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specified below: 2 years parts and 1 year labor. 2) Electronic circuit and/or control boards: parts and labor for 3 years. 3) Compressors on refrigeration equipment: 5 years parts and 1 year labor. 4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis: parts and labor for 3 years or 30,000 po
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CONTENTS Warranty ...................................................................................................................................2 User Notices .............................................................................................................................3 Site Preparation .......................................................................................................................3 Introduction .........................................................
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INTRODUCTION Safety first! To avoid electrical shock, unplug dispenser from power source before servicing inside. WARNING: When powered, the condenser cooling fan will turn on every 30 minutes to aid cooling the entire unit, even when not in the ICE or CHILL modes. KEEP HANDS AWAY FROM FAN! Basic Maintenance In order to maintain proper machine operation, the shaft seals and bushings need to be replaced as a Preventa- tive Maintenance measure. A reminder message will appear every 6 months. Worn/
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TEMP & TORQUE SCREEN Press and hold for five seconds the ULTRA and ICE hidden switches to display the TEMP & TORQUE. The temperature of each cooling drum and the hot gas temperature will toggle back and forth. The auger torque is displayed continuously. Press and release the ULTRA and ICE hidden switches to return to HOME SCREEN. The TEMP & TORQUE mode is typically used for service. DISPLAY TEMP & TORQUE 30 25- 30 25- 161 161°h 27 28°b NOTICE: While in the TEMP & TORQUE screen, the UPPER/low
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OPERATING CONTROLS ULTRA-1 There are three of these switches that will be used for the operation of the dispenser. 1 2 3 P3932 1. switch (upper left corner of the control pad) This switch is the ON/OFF toggle switch which powers up the dispenser and the LCD display. When ON the Date and Time toggle back and forth continously except during programming. 2. (upper right corner) This is used to turn the auger motor to AUGER ON, AUGER OFF or AUGER REFILL ON. (Refill only ap- plicable when
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OPERATING CONTROLS ULTRA-2 There are five of these switches that will be used for the operation of the dispenser. 1 P3677 2 3 4 5 1. switch (upper left corner of the control pad) This switch is the ON/OFF toggle switch which powers up the dispenser and the LCD display. When ON the Date and Time toggle back and forth continously except during programming. 2. (bottom left corner) This is used to turn the left side auge
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RECOMMENDED DAILY CLEANING (ULTRA-2 shown) NOTE – Turn the power OFF to the dispenser before proceeding. 1. Empty all product from the hopper(s). Disconnect the hopper lid lamp cord(s) and remove the lids. 2. Depress the hopper lock plung- 3. Pull forward to remove. 4. Pull the auger from the cooling er. Lift the hopper up slightly. drum. 6. Caution: The faucet valve is 7. Carefully slide the faucet valve 5. Remove the cooling drum seal from the rear of the drum. under spring tension. Spread
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RECOMMENDED DAILY CLEANING (Continued) 1. Install the seal(s) over the 2. Align the auger shaft(s) with the 3. Install auger nose bushing into flange at the rear of the cooling auger(s). Push the auger(s) as inside front of hopper. drum(s) and press the seal(s) far as they will go and rotate so firmly into place as shown. the flat face of the auger shaft is aligned with the flat face of the auger nose. 4. Thoroughly rinse the hopper(s) 5. Slide into place and push down 6. Set the lids on t
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Auto-fill Cleaning Instructions (With Brixing Pump Installed) Materials required 1. Non-sudsing liquid detergent (such as common household automatic dishwasher liquid detergent). 2. Household bleach (Sodium chloride solution: 5.25%) or equivalent. 3. Clean five (5) gallon bucket. 4. Measuring Cup 5. An adaptor is needed to hold the Q.C.D. (Quick Connect/Disconnect) fitting on the concentrate suction line open. A connector from an empty bag will work. Sanitizing Procedure 1. Fill bucket with 4 g
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PREVENTIVE MAINTENANCE A common problem occurs when the proper preventive maintenance procedures are not followed. Failure to perform these procedures may result in damaged equipment and may not be covered by warranty. Please check the following items before assuming a refrigeration fault. When the product does not freeze, there are several possibilities other than a failure in the refrigeration system. The torque between the auger motor and the frozen product is contolled by the torque sensor
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REQUIRED REGULAR MAINTENANCE: Semi Annual: Auger Motor Cover Bunn Kit #34245.0002 is required for ULTRA-1 and Run Capacitor #34245.0000 & #34245.0001 is required for ULTRA-2, Auger Motor Assy to perform the semi annual Preventive maintenance: Note: Service caused by failure to perform required maintenance is not covered by warranty. Auger Shaft Assy The following instructions apply to one hopper only; repeat each step for all hoppers. Kit Contents Inventory this kit for completeness befor
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REQUIRED REGULAR MAINTENANCE (Continued) 6. Pull the auger shaft assembly straight out of cooling drum. Inspect the shaft for abnormal wear. Open face of seal 7. From the front of dispenser, remove the seal and blue bushing away from tool from cooling drum and discard them. 8. Inspect inside of the coling drum from the rear for product leakage and clean thoroughly with an extended bristle brush (Bunn part no. 40500.1068) and warm sanitize solution, rinse and dry with a towel. Clean the fro
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TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department. • Inspection, testing, and repair of electrical equipment should be per formed only by qualified ser vice person- nel. • All electronic components have 120 volt ac and/or low voltage dc potential on their termina
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TROUBLESHOOTING (cont.) Chills but won’t freeze Dispenser in No Yes “DAY” mode? Set into “DAY” mode Dispenser in Yes No “ICE” mode? 1 Verify augers Set into are turned on “ICE” mode Is display showing No UPPER CASE Yes 1 “ICE” mode? Is Brix Is Thickness Yes No screen set low? level high? 2 Yes No 2 Is Filter dirty? No Inspect auger drive shafts Yes for weak torsion springs or Have a certified refrigeration technician damaged pins. Check for dirty or worn seals and bushings. check for low refrig
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TROUBLESHOOTING (cont.) No cooling at all Is ICE/CHILL Yes set to off? No Set into “ICE” or “CHILL” mode Is compressor No Yes running? 1 Is filter Is Dispenser on Yes dirty? Yes an extension cord? Plug directly 3 inti outlet No No 1 Is there correct Check fan No voltage at outlet? Yes Call a licensed Have a certified electrician refrigeration technician check for low refrigerant or blockage. Follow compressor circuit checks. 1- Done 2- Adjust 3- Clean 41084 102709 16
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TROUBLESHOOTING (cont.) Freezes, but not thick enough Ambient Too much Adjust thickness Brix ratio temperature screen higher too high alcohol in too hot product Recommended Check for slightly Adjust for indoor bent auger shaft product use only pins and/or weak torsion springs. Check for dirty or worn seals and bushings. No hood lamps Is dispenser in No Yes “DAY” mode? Set into Is circuit breaker Yes No “DAY” mode tripped? Verify all 4 bulbs are 912 Check lamp circuit series & reset breaker 4108
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TROUBLESHOOTING (cont.) Noise Auger jumping Using auger Check fan assembly from CDS 2 or 3? Lower brix ratio Replace with ULTRA p/n 32106.1000 Drum alignment Check auger shaft bushings Auger won’t turn Do they turn during Yes “AUGER MOTOR TEST” No mode? One direction, Auger motor/capacitor but not the other checks Check membrane switch Replace control board 41084 102709 18
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TROUBLESHOOTING (cont.) Torque Sensor Error TORQUE SENSOR ERROR TORQUE SENSOR OPEN TORQUE SENSOR SHORTED Right side Left side Right side Left side Are augers Sensor unplugged or No turning? break in wiring Go to motor Yes troubleshooting Are augers shaft pins Check sensor No damaged or missing? circuit Yes Replace as necessary 41084 102709 19
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TROUBLESHOOTING (cont.) Temperature Sensor Error TEMPERATURE SENSOR OPEN TEMPERATURE SENSOR SHORTED Left side Left side Right side Right side Product not covering Check wiring harness between back end of drum. thermistor and control board Drum temperature falls below 9° F. Replenish product Thermistor unplugged or break in wiring Check thermistor circuit 41084 102709 20
