Bunn CDS-3 User Manual

OPERATING & SERVICE MANUALBUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227SPRINGFIELD, ILLINOIS 62708-3227PHONE: (217) 529-6601 FAX: (217) 529-6644

10USING THE DISPENSER FOR GRANITA-TYPE PRODUCTS1. Slide the lid for the selected hopper to the front or back to gain access to the hopper.2. Place the

11OTHER RECOMMENDATIONS FOR YOUR DISPENSER• Whether liquid concentrate or granulated powder, all product must be thoroughly mixed BEFORE adding itto t

12RECOMMENDED DAILY CLEANING (SUGAR & ALCOHOL PRODUCTS!)NOTE – Close the control drawer before proceeding.1. Empty all product from the hoppers.2.

131. Squeeze some lubricant intohand.2. Apply a thin film of lubricant toeach cooling drum seal.3. Install the seals over the flangeat the rear of the

1414. Plug in the hopper lid lampcables.15. Assemble the drip tray.LUBRICATION (cont.)12. Slide the O-rings onto thespools.10. Reinstall the black plu

15AUGER ASSEMBLY & DISASSEMBLY (EARLY AUGERS ONLY)The augers may look intimidating at first glance. But there are really just afew pieces snapped

16TROUBLESHOOTINGA troubleshooting guide is provided to suggest probable causes and remedies for the most likely problemsencountered. If the problem r

17TROUBLESHOOTING (cont.)REMEDY(A) The circuit breaker must not betripped.(B) Refer to Service - Circuit Breakerfor testing procedures. See page 27.Re

18TROUBLESHOOTING (cont.)PROBLEMCompressor not running(With Adjustment Board L.E.D.s ONsteadily for two minutes)Compressor runs but will not cool(With

19TROUBLESHOOTING (cont.)PROBLEMCompressor runs but will not cool(With adjustment Board L.E.D.sflashing 3, or 4 times every 4seconds) (cont.)Product W

2INTRODUCTIONThis equipment dispenses granita-type and cold liquid drinks on demand from separate hoppers. Operatingcontrols are accessible only to ke

20TROUBLESHOOTING (cont.)PROBLEMDispenser is making unusual noises.(Some noises are a normaloccurance with this type of device.You need to become fami

21Auger Motors ... 22Auger Motor Capacitors...

22aside with wires attached.4. Disconnect the auger motor terminal from theterminal on the main wiring harness.5. Remove the three remaining #8 lockin

23FIG. 4 AUGER MOTOR CAPACITOR TERMINALSSERVICE (CONT.)AUGER MOTOR CAPACITORFIG. 3 AUGER MOTOR CAPACITORSP1341Location:The auger motor capacitors are

24SERVICE (cont.)AUGER SHAFT ASSEMBLYAuger Shaft AssyAuger Shaft BushingCooling Drum SealAuger Shaft SealHopper Drum SealFIG. 5 AUGER SHAFT ASSEMBLYLo

25SERVICE (cont.)AUGER SHAFT ASSEMBLY(cont.)FIG. 6A AUGER SHAFT BUSHINGLightly lube the bushing I.D.with M2550.0000 “Lubri-Film”Do NOT get any Lube on

26If continuity is present as described, the auger switchis operating properly.If continuity is not present as described, replace theauger switch.Remo

27R22FIG. 9 CIRCUIT BREAKERP1342SERVICE (cont.)CIRCUIT BREAKERLocation:The circuit breaker is located inside the dispenseron the upper left side of th

28120V COMPRESSORSSERVICE (cont.)COMPRESSOR & COMPONENTS (CDS-2)R22FIG. 11 COMPRESSOR ASSYR22R22 3 2 5 6FIG. 12 COMPRE

29SERVICE (cont.)COMPRESSOR & COMPONENTS (CDS-2) (cont.)Compressor Start Capacitor:1. Check for continuity across the terminals on thecompressor s

3USER NOTICESCarefully read and follow all notices on the equipment and in this manual. They were written for your protec-tion. All notices are to be

30Compressor Thermal Overload Protector (230V):Refer to FIG. 121. Remove terminal cover retainer (6) and terminalcover (5).2. Disconnect the black wir

31SERVICE (cont.)COMPRESSOR & COMPONENTS (CDS-3)FIG. 16 COMPRESSOR &COMPONENT LOCATIONSFIG. 17 COMPRESSOR THERMALOVERLOAD PROTECTOR LOCATION3.

32SERVICE (cont.)COMPRESSOR & COMPONENTS (CDS-3) (cont.)Compressor Run Capacitor:1. Check for continuity across the terminals on thecompressor run

33SERVICE (cont.)COMPRESSOR & COMPONENTS (CDS-3) (cont.)Compressor Thermal Overload Protector: Refer to FIG.171. Remove terminal cover retainer (7

34SERVICE (cont.)CONTACTOR - ELECTRONIC CONTROL6. Disconnect the black wires from contactor termi-nals #6 & #8 (#5 & #6, CDS-3 first type cont

35SERVICE (cont.)COOLING DRUM ALIGNMENTThe “A” shaped Cooling Drum Shipping Supports,removed during Initial Set-Up should be kept and usedas a tool to

36SERVICE (cont.)DAY/NIGHT SWITCHIf continuity is present as described, the day/nightswitch is operating properly.If continuity is not present as desc

37FIG. 28 DISPENSER ON/OFF SWITCHTERMINALSP1337SERVICE (cont.)DISPENSER ON/OFF SWITCHFIG. 27 ON/OFF SWITCH - DISPENSERP1343Location:The dispenser ON/O

38R22FIG. 29 ELECTRONIC CONTROLLocation:The electronic control is located on the outside ofthe component bracket inside the chassis on the rightside.T

39SERVICE (cont.)FANFIG. 30 FANP1342Location:The fan is located inside the dispenser chassis justin front of the condenser.Test Procedures:1. Disconne

4USER NOTICES (CONT.)CHARGEType R22, Amount 8.4 ozDesign Pressures: High 210 Low 32AFTER CLEANING &BEFORE REASSEMBLYLUBRICATION12327664.0000

40SERVICE (cont.)FUSE AND FUSE HOLDERR22FIG. 33 FUSE HOLDERP1342Location:The fuse holder is located inside the dispenser onthe upper left side of the

41SERVICE (cont.)ICE/OFF/NO ICE SWITCHESFIG. 36 ICE/OFF/NO ICE SWITCH TERMINALSP1334FIG. 35 ICE/OFF/NO ICE SWITCHESP1343Location:The ICE/OFF/NO-ICE sw

42SERVICE (cont.)LAMP CORD ASSYFIG. 37 LAMP CORD ASSYP1343Location:The lamp cord assembly is located in the left top ofthe auger motor cover.Test Proc

43SERVICE (cont.)LAMP CORD CONNECTORIf continuity is not present when lamp cord assemblyis connected or continuity is present when lamp cordassembly i

44Removal and Replacement:1. Disconnect the lamp cord assembly from the lampcord connector assembly in the top of the augermotor cover.2. Remove the h

45SERVICE (cont.)L.E.D./ADJUSTMENT BOARD3. Lift switch panel with wires and L.E.D. /adjustmentboard as an assembly and turn over.4. Disconnect the con

46FIG.45 SOLENOID TERMINALSP1327SERVICE (cont.)SOLENOIDSR22FIG. 44 SOLENOIDSP1342Location:The solenoids are mounted on a bracket that isattached on to

47FIG. 47 TEMPERATURE SENSORP1325SERVICE (cont.)TEMPERATURE SENSORFIG. 46 TEMPERATURE SENSORP1341Location:The temperature sensors are located inside t

48FIG. 49 TORQUE SENSOR CIRCUITBOARD TERMINALSP1328SERVICE (cont.)TORQUE SENSOR CIRCUIT BOARDFIG. 48 TORQUE SENSOR CIRCUIT BOARDP1341Location:The torq

49SERVICE (cont.)TRANSFORMERFIG. 51 TRANSFORMER TERMINALSP1329R22FIG. 50 TRANSFORMERP1342Location:The transformer is located inside the chassis onthe

5SITE PREPARATIONThese dispensers are very heavy. Place them on a sturdy counter or shelf capable of supporting at least 180lbs for the CDS2 and 250 l

50SERVICE (CONT.)VOLTAGE DIVIDER (PAF Models only)Location:The voltage divider is located in the wiring har-ness, inside the chassis near the upper r

51COOLANT SCHEMATIC DIAGRAM CDS-227646 022500

52COOLANT SCHEMATIC DIAGRAM CDS-3(Prior to S/N CDS 0019500)LEFT EVAPORATOR CENTER EVAPORATORCONDENSERSUCTIONACCUMULATORCOMPRESSORRIGHT EVAPORATORSPLIT

53LEFT EVAPORATOR CENTER EVAPORATORCONDENSERSUCTIONACCUMULATORCOMPRESSORRIGHT EVAPORATORSPLITTERFILTER DRYERsTEVTEVTEVssSIGHTGLASSCOOLANT SCHEMATIC DI

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5727646 022801WHI/BRNor VIOWHI/REDWHI/REDWHI/BLUWHI/BLULT. AUGER SW.RT. AUGER SW.WHI/BRNRIGHTAUGERBLKREDWHIBLKBLKWHI/BLKLEFTAUGERBLKREDWHIWHI/BLK14WHI

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6INITIAL SETUPCAUTION – The dispenser is very heavy! Use care when lifting or moving it. Use at least two people to lift ormove the dispenser.1. Set t

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79. Align the auger shaft with theflat fin of the auger. Push theaugers as far as they will go androtate them so the flat fins arepointing up.10. Thor

8654321COLDERLEFTICERIGHTICE654321COLDERRIGHTLEFTAUGEROFFICE ICECENTERAUGEROFFICE ICEAUGEROFFICE ICEPOWEROFF ON DAY NIGHTCENTER ICE654321COLDERICE CON

9DAY/NIGHT TIMERThe quartz driven timer offers 24-hour programming with 96 actuators that operate in 15-minuteincrements. All actuators can be indivi