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Related Manuals for Bunn CDS-2
Summary of Contents for Bunn CDS-2
- Page 1 BUNN ® CDS-2 CDS-3 OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www.bunnomatic.com 27646.0000L 06/01 ©1997 Bunn-O-Matic Corporation...
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Page 2: Table Of Contents
SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, REPLACEMENT OR REFUND. In no event shall Bunn be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages. -
Page 3: User Notices
USER NOTICES Carefully read and follow all notices on the equipment and in this manual. They were written for your protec- tion. All notices are to be kept in good condition. Replace any unreadable or damaged labels. CHARGE Type R22, Amount 8.4 oz Design Pressures: High 210 Low 32 27442.0000 12559.0003... - Page 4 Design Pressures: High 210 Low 32 cooling drum seal or inside bore of hopper. 3. Apply lubricant* over o-rings on faucet spool before inserting into faucet housing. * Refer to product literature for Bunn 27444.0000 (CDS-2 Only) approved lubricant. CHARGE Type R404A, Amount 9.5 oz(269g)
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Page 5: Site Preparation, Electrical Requirements & Initial Setup
CAUTION – Improper electrical installation will damage components. An electrician must provide electrical service as specified below. Model CDS-2, This dispenser has an attached cordset and requires a 2-wire, grounded, individual branch circuit rated 120 volts ac, 15 amp, single phase, 60 Hz. The mating connector must be a NEMA 5-15R. (Refer to the dataplate for exact electrical requirements.) - Page 6 INITIAL SETUP CAUTION – The dispenser is very heavy! Use care when lifting or moving it. Use at least two people to lift or move the dispenser. Set the dispenser on the counter where it will be used. The CDS-3 dispenser requires a minimum of 6.0" air clearance on both sides and at the rear of the dispenser.
- Page 7 APPROXIMATELY .25" 12. Plug in the hopper lid lamp 13. (CDS-2 only) Assemble the drip 14. (CDS-3 only) Loosen the two cables. tray. front legs by turning counter- clockwise to gain approxi- mately .25"...
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Page 8: Operating Controls
“ON” position. NOTE – The compressor will the right “—”position. start after a 3 minute 20 second delay on the CDS-2 and a 6 minute 30 second delay on the CDS-3. NOTE: When Day/Night Timer is used, the Day/Night OFF –... - Page 9 OPERATING CONTROLS (Cont.) TWO FLASHES EVERY FOUR SECONDS – A temperature error is being sensed. Call Bunn-O-Matic for Support. THREE QUICK FLASHES – Low auger torque is being sensed. Call Bunn-O-Matic for Support. FOUR QUICK FLASHES – High auger torque is being sensed. Call Bunn-O-Matic for Support.
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Page 10: Using The Dispenser & Recommendations
Wait for the liquid to freeze to the desired consistency. HINTS – Bunn-O-Matic recommends that the product in the dispenser be thawed each day, usually overnight. The ice granules get too large and a consistent product is difficult to maintain if left frozen for an extended period of time. - Page 11 OTHER RECOMMENDATIONS FOR YOUR DISPENSER • Whether liquid concentrate or granulated powder, all product must be thoroughly mixed BEFORE adding it to the hoppers. • For best results with granita-type products, use only products with an apparent brix of 12 or higher. Some products may work with an apparent brix as low as 9.
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Page 12: Recommended Cleaning
RECOMMENDED DAILY CLEANING (SUGAR & ALCOHOL PRODUCTS!) NOTE – Close the control drawer before proceeding. Empty all product from the hoppers. The driptray should be cleaned as needed for proper presentation of the product. Mix a packet of Kay-5 Sanitizer diluted with two-gallons of warm (120° F) water for each hopper. Open the lids and add the solution. -
Page 13: Lubrication
RECOMMENDED WEEKLY CLEANING (CONT.) 11. Wash all components with a wash cloth in mild hot water and detergent solution. Do not immerse hopper lids. 12. Wash the drums, hopper drip trays, top covers, and outer enclosure using a clean wash cloth that has been dampened in a mild solution of detergent and hot water. -
Page 14: Faucet Handles
(Past the or damaged. Bunn-O-Matic recommends their replacement at least point where it clicks.) every six-months. Refer to page 24 for replacement instructions. -
Page 15: Auger Assembly
AUGER ASSEMBLY & DISASSEMBLY (EARLY AUGERS ONLY) The augers may look intimidating at first glance. But there are really just a few pieces snapped together. Please familiarize yourself with this procedure. It’ll make cleaning and routine maintenance easier. The augers should be taken apart for cleaning and then reassembled for use. -
Page 16: Troubleshooting
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 performed only by qualified service personnel. - Page 17 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Hopper Display Lights not on (cont.) 3. Circuit Breaker (A) The circuit breaker must not be tripped. (B) Refer to Service - Circuit Breaker for testing procedures. See page 27. 4. Lamps Remove the lamps and check for continuity across the base and tip.
- Page 18 See page 38. Refer to Service - Compressor Start 5. Compressor Start Relay Relay for testing procedures. See page 28 (CDS-2) or 31 (CDS-3). Refer to Service - Compressor Ther- 6. Thermal Overload Protector mal Overload Protector for testing procedures.
- Page 19 (B) Refer to Service - DAY/NIGHT Switch for testing procedures. See page 36. 2. Sugar content of product Bunn recommends the use of prod- ucts with an apparent brix of 12 or higher. 3. Voltage Divider Refer to Service - Voltage Divider for testing procedures.
- Page 20 TROUBLESHOOTING (cont.) REMEDY PROBLEM PROBABLE CAUSE Dispenser is making unusual noises. 3. Fan Motor Remove the air filter at the rear of the (Some noises are a normal dispenser and listen for fan motor occurance with this type of device. noise.
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Page 21: Service
Auger Shaft Assembly ..................24 Auger ON/OFF Switches ................... 26 Circuit Breaker ....................27 Compressor (CDS-2) ..................28 (Compressor, Compressor Start Capacitor, Compressor Start Relay, Thermal Overload Protector) Compressor (CDS-3) ..................31 (Compressor, Compressor Start Capacitor, Compressor Start Relay, Thermal Overload Protector) Contactor ...................... -
Page 22: Auger Motors
SERVICE(CONT.) AUGER MOTORS aside with wires attached. 4. Disconnect the auger motor terminal from the terminal on the main wiring harness. 5. Remove the three remaining #8 locking screws securing the auger motor mounting bracket to cooling drum mounting bracket. 6. -
Page 23: Auger Motor Capacitors
SERVICE (CONT.) AUGER MOTOR CAPACITOR Removal and Replacement 1. Remove the two #8 locking screws securing the auger motor cover to the cooling drum mount assy. 2. Remove the cover and set aside for reassembly. 3. Disconnect the wires from the auger motor ca- pacitor terminals. -
Page 24: Auger Shaft Assembly
10. Refer to Fig 6A and slip new blue bushing into cooling drum. Lightly lube I.D. of bushing with #M2550.0000 “Lubri-film” provided in Kit #28106.0000 (CDS-2) or #28106.0001 (CDS-3). Do not use anything such as a cotton swab that Auger Shaft Bushing Cooling Drum Seal might leave lint or unravel. - Page 25 SERVICE (cont.) AUGER SHAFT ASSEMBLY(cont.) Lube about 1 1/2" of shaft and in the groove Lightly lube the bushing I.D. with #29563.0000 @@ @@ @@ yy with M2550.0000 “Lubri- “Krytox” Lubricant Film” @@ @@ @@ @@ @@ @@ yy yy Auger Shaft Assy Do NOT get any Lube on this surface...
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Page 26: Auger On/Off Switches
SERVICE (cont.) AUGER ON/OFF SWITCHES If continuity is present as described, the auger switch is operating properly. If continuity is not present as described, replace the auger switch. Removal and Replacement: 1. Pull the dispenser drawer out until the drawer hits the drawer stop. -
Page 27: Circuit Breaker
SERVICE (cont.) CIRCUIT BREAKER 5. Push the new circuit breaker into the opening in the component bracket until the clips snap into position. 6. Reconnect the wires to the circuit breaker. 7. Position the component bracket in chassis and secure with four #8-32 locking screws. 8. -
Page 28: Compressor (Cds-2)
Test Procedures: SERVICE (cont.) WARNING: The compressor start capacitor must be COMPRESSOR & COMPONENTS (CDS-2) properly discharged before proceeding. Compressor Start Relay: Refer to FIG. 12 1. Disconnect the dispenser from the power source. 2. Remove compressor terminal cover retainer (6) and compressor terminal cover (5). - Page 29 Fig. 22 for contactor. SERVICE (cont.) 11. Position the component bracket in the chassis and COMPRESSOR & COMPONENTS (CDS-2) (cont.) secure with four #8-32 locking screws. 12. Reconnect tubes from the condenser and the Compressor Start Capacitor: accumulator to the compressor.
- Page 30 Compressor Thermal Overload Protector (230V): SERVICE (cont.) Refer to FIG. 12 COMPRESSOR & COMPONENTS (CDS-2) (cont.) 1. Remove terminal cover retainer (6) and terminal Compressor Start Relay: Refer to FIG. 12 cover (5). 1. Remove the terminal cover retainer (6) and the 2.
- Page 31 3. Disconnect the black wire to the thermal overload SERVICE (cont.) protector (4), the white and black or red wires to COMPRESSOR & COMPONENTS (CDS-3) the compressor. 4. With a voltmeter, check voltage across the black wire removed from the thermal overload protector and the white wire with the ON/OFF switch in the “ON”...
- Page 32 13. Slide new compressor into position on the dis- SERVICE (cont.) penser chassis, with the tube connections to the COMPRESSOR & COMPONENTS (CDS-3) (cont.) front. Compressor Run Capacitor: 14. Secure compressor to the dispenser chassis using 1. Check for continuity across the terminals on the four .312"-18 screws, washers and nuts.
- Page 33 SERVICE (cont.) T4 WHI from Compressor COMPRESSOR & COMPONENTS (CDS-3) (cont.) and Main Harness Compressor Start Capacitor: T4 BLK from Run Capacitor WARNING: The compressor start capacitor must be T5 BLK from Compressor properly discharged before proceeding. Thermal Overload Protector 1.
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Page 34: Contactor
If continuity is not present as described, on CDS-3 first type contactors, replace contactor. If continuity is not present between terminals #6 & #8 as described on all CDS-2 contactors and CDS-3 second type contactors, check for continuity across terminals #2 and #4. -
Page 35: Cooling Drum Alignment
SERVICE (cont.) COOLING DRUM ALIGNMENT Ledge Boss Legs P1510 FIG. 24 CHECKING ALIGNMENT FIG. 23 COOLING DRUM SHIPPING SUPPORT When in its proper position, the cooling drum will The “A” shaped Cooling Drum Shipping Supports, cause a slight pressure on the hopper drip tray drain removed during Initial Set-Up should be kept and used hole and the two legs will be equidistant from the hop- as a tool to reset the alignment of the cooling drums... -
Page 36: Day/Night Switch
SERVICE (cont.) DAY/NIGHT SWITCH If continuity is present as described, the day/night switch is operating properly. If continuity is not present as described, replace the day/night switch. Removal and Replacement: 1. Pull the dispenser drawer out until the drawer hits the drawer stop. -
Page 37: Dispenser On/Off Switch
SERVICE (cont.) DISPENSER ON/OFF SWITCH Removal and Replacement: 1. Pull the dispenser drawer out far enough to expose the four #8 -32 locking screws securing the switch panel to the drawer. 2. Remove the four #8-32 locking screws. 3. Lift switch panel with wires and L.E.D./adjustment board as an assembly. -
Page 38: Electronic Control
SERVICE (cont.) ELECTRONIC CONTROL Removal and Replacement: 1. Disconnect the plug from the main harness from the connector on the electronic control. 2. Remove the two #8-32 locking screws securing electronic control to the component bracket. Re- move and discard the electronic control. 3. -
Page 39: Fan
SERVICE (cont.) P1342 FIG. 30 FAN P1345 FIG. 31 FAN COMPONENTS Location: The fan is located inside the dispenser chassis just 6. Remove speed nut (2) from the motor shaft. in front of the condenser. 7. Remove fan (3). 8. Remove silencer (4). Test Procedures: 1. -
Page 40: Fuse And Fuse Holder
SERVICE (cont.) FUSE AND FUSE HOLDER Fuse Holder: 1. Disconnect the wires from the rear of the fuse holder. 2. Remove nut securing the fuse holder to the com- ponent bracket. 3. Push fuse holder through the hole in the compo- nent bracket. -
Page 41: Ice/Off/No Ice Switch
SERVICE (cont.) ICE/OFF/NO ICE SWITCHES 6. With the switch to be tested pressed down on the right side, check for continuity between the center terminal and the left terminal. With the switch pressed down to the left, check for continuity between the center terminal and the right terminal. -
Page 42: Lamp Cord Assembly
SERVICE (cont.) LAMP CORD ASSY 8. Using the two wire nuts, supplied, connect the new lamp cord assembly to the lamp holder/socket assembly wires. 9. Reinstall the hopper liner to the bottom of the hopper cover. 10. Reinstall the hopper cover to the hopper. 11. -
Page 43: Lamp Cord Connector
SERVICE (cont.) LAMP CORD CONNECTOR If continuity is not present when lamp cord assembly is connected or continuity is present when lamp cord assembly is not connected, replace the lamp cord connector. Removal and Replacement: 1. Disconnect the lamp cord assembly from the lamp cord connector. -
Page 44: Lamp Holder/Socket Assembly
SERVICE (cont.) LAMP HOLDER/SOCKET ASSEMBLY Removal and Replacement: 1. Disconnect the lamp cord assembly from the lamp cord connector assembly in the top of the auger motor cover. 2. Remove the hopper cover with the lamp cord assembly from the hopper. 3. -
Page 45: L.e.d./Adjustment Board
SERVICE (cont.) L.E.D./ADJUSTMENT BOARD 3. Lift switch panel with wires and L.E.D. /adjustment board as an assembly and turn over. 4. Disconnect the connector on the dispenser wiring harness from the pin connector on the rear of the L.E.D./adjustment board. 5. -
Page 46: Solenoids
SERVICE (cont.) 7. Disconnect the dispenser from the power source. If the sound is heard as described and the refrigerant SOLENOIDS will not pass through the solenoid valve, there may be a blockage in the refrigerant line before the sole- noid valve, or the solenoid valve may require inspec- tion for wear, and removal of particles. -
Page 47: Temperature Sensor Assembly
SERVICE (cont.) TEMPERATURE SENSOR Removal and Replacement: 1. Remove the two #8-32 securing the auger motor cover to cooling drum mount and remove the cover. Set aside for reassembly. 2. Disconnect the plug on the temperature sensor leads from the connector on the dispenser main wiring harness. -
Page 48: Torque Sensor Circuit Board
SERVICE (cont.) TORQUE SENSOR CIRCUIT BOARD 6. Remove motor with mounting bracket, drip tray, split pin and torsion spring bearings as an assem- bly and set aside for reassembly. NOTE: When removing or installing the motor be sure the split pin in the motor shaft is turned to a position that will clear the torque sensor circuit board. -
Page 49: Transformer
SERVICE (cont.) TRANSFORMER 8. With a voltmeter, check the voltage across the inside of lamp cord socket and the outside with the DAY/NIGHT switch in the “-” down position. The indication must be approximately 12.6 volts dc. 9. Disconnect the dispenser from the power source. If voltage is present as described, the transformer is operating properly. -
Page 50: Voltage Divider
SERVICE (CONT.) VOLTAGE DIVIDER (PAF Models only) 5. With a voltmeter, check voltage between J4 pin 3 and J4 pin 23 of the control board. Connect the Location: dispenser to the power source; set the main power The voltage divider is located in the wiring har- switch to “ON”... -
Page 51: Refrigerant Flow Diagrams
COOLANT SCHEMATIC DIAGRAM CDS-2 27646 022500... - Page 52 COOLANT SCHEMATIC DIAGRAM CDS-3 (Prior to S/N CDS 0019500) 27646 022500...
- Page 53 COOLANT SCHEMATIC DIAGRAM CDS-3 (S/N CDS 0019500 - Up) 27646 022500...
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Page 54: Schematic Wiring Diagrams
27646 022500... - Page 55 27646 022500...
- Page 56 27646 022500...
- Page 57 J4-15 ICE/OFF/NO-ICE WHI/BLK WHI/VIO SWITCHES WHI/YEL LEFT WHI/VIO-22 WHI/BLK BLK-22 BLK-22 BRN/BLK J4-20 WHI/BLK WHI/BLK WHI/GRN J4-24 LEFT SPRING RIGHT SPRING CONTACT CONTACT 230 VOLTS AC 2 WIRE SINGLE PHASE 27556.0003B 02/01 © 1996 BUNN-O-MATIC CORPORATION 50 HZ 27646 022801...
- Page 58 27646 022500...
- Page 59 27646 022500...
- Page 60 27646 022500...