2 FILL RE IN MA ER W PO R TE WAP U T IN AFPO-2 AFPO-2 SL AFPO-3 AFPO-3 SL 1 1 OR AV T FL TPU OU 2 OR AV FL PUT IN 2 R TE T WA P U T OU OR AV T FL TPU OU R TE T WA P U T OU 1 2 FILL RE 3 IN MA ER W PO R TE WAP U T IN 1 1 OR AV FL PUT IN OR AV T FL TPU OU 2 R TE T WA P U T OU OR AV T FL TPU OU 3 R TE T WA P U T OU OR AV T FL TPU OU R TE T WA P U T OU SERVICE & REPAIR MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (2
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor. 2) All other equipment - 2 years parts and 1 year labor plus added warranties as specified below: a) Electronic circuit and/or control boards - parts and labor for 3 years.
CONTENTS User Notices...............................................................................................................................3 Preventive Maintenance Cleaning......................................................................................................................................4 Adjustments................................................................................................................................4 Operating Controls....................................
CLEANING RECOMMENDED WEEKLY CLEANING: This should be done in conjunction with the recommended weekly cleaning of your machine. The Hoppers must be empty before starting. 1. Prepare a 1 gallon cleaning solution consisting of 1 gallon of hot water and a sanitizing cleaner which contains 3-5% chlorine based sanitizer. Mix per manufacturers instructions 2. Remove connectors from each concentrate container and place them directly into the cleaning solution. 3.
MIX RATIO ADJUSTMENTS(cont.) Mix ratio (water/flavor) 1+1 2+1 3+1 4+1(see below) 5+1 6+1 Time for FLAVOR OUTPUT (1/2 cup) assume 20 sec. or obtain time per note below assume 20 sec. or obtain time per note below assume 20 sec. or obtain time per note below assume 20 sec. or obtain time per note below assume 20 sec. or obtain time per note below assume 20 sec. or obtain time per note below Time for WATER OUTPUT (1 cup) 40 sec. or 2 times flavor output time 20 sec. or equal to flavor output time 13.
OPERATING CONTROLS C B 1 A 2 L IL EF R 3 IN MA ER W PO R TE WAP U T IN 1 1 OR AV FL PUT IN OR AV T FL TPU OU 2 R TE T WA P U T OU 2 P1949 3 A. MAIN POWER ON/OFF The main power ON/OFF switch is located on the right of the front panel just above the power cord. OR AV T FL TPU OU R TE T WA P U T OU B. REFILL CIRCUIT ON/OFF The refill circuit ON/OFF switches are located on the right of the front panel just above the main power switch. These allow each circuit to operate independently. C.
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. All electronic components have 120 volt ac and low voltage dc potential on their terminals.
TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Product will not dispense (cont.) 6. Main ON/OFF switch Refer to Service - Main ON/OFF Switch for testing procedure. See page 13 7. Probe box LOW/OFF/HIGH switches Refer to Service - Probe system. See page 14 8. Circuit board Refer to Service - Circuit Board for testing procedures. See page 11 9. Vacuum switch Refer to Service - Vacuum switch for testing procedures. See page 22 10.
SERVICE This section provides procedures for testing and replacing various major components used in this dispenser should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any problem. WARNING - Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel. The dispenser should be unplugged when servicing, except when electrical tests are required and the test procedure specifically states to plug in the dispenser.
SERVICE CIRCUIT BOARD c) 230 volts ac for two wire 230 volt models. 4. Disconnect the dispenser from the power source. If voltage is present as described, replace the circuit board. If voltage is not present as described, refer to the Wiring Diagrams and check main wiring harness. FFO Removal and Replacement: 1. Remove the four #8-32 keps nuts securing the switch mounting bracket. Set aside with the wires attached. 2. Remove the circuit board shield and set aside for reassembly. 3.
SERVICE FUSE AND FUSE HOLDER Removal and Replacement: Fuse: 1. Remove the cap from the fuse holder. 2. Remove fuse from the fuse holder and inspect. If blown, discard. 3. Install new 10 amp fuse in the fuse holder. 4. Reinstall fuse holder cap. 1 RE 3 Fuse Holder: 1. Disconnect the dispenser from the power source. 2. Disconnect the wires from the rear of the fuse holder. 3. Remove the nut securing the fuse holder to the front of the main mounting panel. 4.
SERVICE (cont.) MAIN ON/OFF SWITCH 5. Check for continuity across the switch terminals with the switch in the “ON” position. Continuity must not be present when the switch is in the “OFF” position. If continuity is present as described, reconnect the wires to the switch terminals. If continuity is not present as described, replace the switch.
SERVICE (cont.) PROBE SYSTEM Mov ing Par Do ts. unitnot ope pan with rate el remthis ove d. Probe Boxes: 1. Disconnect the signal cable from the probe boxes. 2. Remove probe box from CDS hopper. 3. Place the switch on the probe box in the “HIGH” position. 4. Check the resistance across the box cable pins, see Fig. 10. Ris k Of Ele ctri Disc cal serv onnect Sho icin pow ck. g unit er befo . re De Typ sig e n PreR2 CHAR 2, GE Su ssuresAm ctio : oun n Hig t Pre h _ _ ssu _ _ OZ .
SERVICE (cont.) PUMP (FLAVOR) ON/OFF SWITCHES Removal and Replacement: 1. Disconnect the dispenser from the power source. 2. Remove the wires from the switch terminals. 3. Compress the clips inside the autofill box and gently push the switch through the opening. 4. Push the new switch into the opening and spread the clips to hold switch in the autofill box. 5. Refer to Fig. 13 when reconnecting the wires.
SERVICE (cont.) REFILL SWITCHES If continuity is present as described, reconnect the wires to the switch terminals. If continuity is not present as described, replace the switch. Removal and Replacement: 1. Remove the wires from the switch terminals. 2. Compress the clips inside the autofill box and gently push the switch through the opening in the front of autofill box. 3. Push the new switch into the opening and spread the clips to hold switch in the autofill box. 4. Refer to Fig.
SERVICE (cont.) 6. Check the solenoid valve for coil action. Connect the dispenser to the power source. Press the solenoid (water) switch and listen carefully in the vicinity of the solenoid valve for a “clicking” sound as the coil magnet attracts. 7. Disconnect the dispenser from the power source.
SERVICE (cont.) SOLENOID (WATER) ON/OFF SWITCHES Removal and Replacement: 1. Remove the wires from the switch terminals. 2. Compress the clips inside the autofill box and gently push the switch through the opening. 3. Push the new switch into the opening and spread the clips to hold switch in the autofill box. 4. Refer to Fig. 19 when reconnecting the wires.
SERVICE (cont.) 5. Disconnect the dispenser from the power source. TEST/OPERATE ON/OFF SWITCH If voltage is present as described, proceed to #6. If voltage is not present as described, refer to the Wiring Diagrams and check the wiring harness. 6. Disconnect the wires from the left and center terminals. 7. Check for continuity across the left and center terminals in rows one, two, three and four with the switch in the “operate” position.
SERVICE (cont.) a) 120 volts ac for two wire 120 volt models. b) 200 to 240 volts ac for two wire 200 or 240 volt models. c) 230 volts ac for two wire 230 volt models. 4. Disconnect dispenser from the power source. VACUUM/SUPPLY PUMP ASSEMBLY If voltage is present as described, replace the pump. If voltage is not present as described, refer to the Wiring Diagrams and check main wiring harness.
SERVICE (cont.) VACUUM/SUPPLY PUMP TUBE INSTALLATION 2. Separate the two halves of the pump and carefully remove the tubing from within. 3. Hold the new pump head as shown in Fig. 24, with rollers in the 2, 6, and 10 o’clock positions. 4. Reinstall tubing in the new pump head by wrapping the tubing around the rollers as shown in Fig. 24. 5. Insert the slot of the tubing key (supplied), as shown in Fig.
SERVICE (cont.) VACUUM SWITCHES If continuity is not present as described, the vacuum switch is operating properly. If continuity is present as described, without a vacuum generated by an empty product concentrate, replace the vacuum switch. 1 2 L FIL RE 3 IN MA ER W PO ER T WAT PU IN Removal and Replacement: 1. Disconnect dispenser from the power source. 2. Removal of the two #8-32 keps nuts securing the pump/motor assembly nearest the vacuum switches is required to access the lower vacuum switch.
PIPING DIAGRAM (AFPO-2) The only difference between the AFPO-2/3 and AFPO-2/3 SL is the SL models have a water output line and a flavor output line for each product. This allows the water and flavor to be mixed in the hoppers. Refer to the illustration below when connecting the lines.
SCHEMATIC WIRING DIAGRAM AFPO-2 L1 N GRN SW1D BLK MAIN ON/OFF SWITCH BLK BLK 10 AMP BRN/BLK SW1C SOLENOID SWITCH #2 VIO B L K VIO PUMP SW ITCH #2 PUMP #2 SOLENOID SWITCH #2 WHI W H I RED/BLK W H I REFILL ON/OFF SWITCH #2 BRN/BLK REFILL ON/OFF SWITCH #1 RED/BLK S W I T C H SW1B SOL #1 BLU B L K SOL #2 BRN/BLK ORN B L K T E S T / O P E R A T E BLU PUMP SW ITCH #1 RED/BLK YEL PUMP #1 WHI SW1A BLK VACUUM SWITCH #2 VACUUM SWITCH #1 C I R C U I T B O A R D J4-1 2 3 4 5 6 7 8 9 J
41093 040408
SCHEMATIC WIRING DIAGRAM AFPOA-2 L1 L2 GRN SW1D BLK MAIN ON/OFF SWITCH BLK BLK 10 AMP BRN/BLK SW1C SOLENOID SWITCH #2 VIO B L K VIO PUMP SW ITCH #2 PUMP #2 SOLENOID SWITCH #2 WHI W H I RED/BLK W H I REFILL ON/OFF SWITCH #2 BRN/BLK REFILL ON/OFF SWITCH #1 RED/BLK S W I T C H SW1B SOL #1 BLU B L K SOL #2 BRN/BLK ORN B L K T E S T / O P E R A T E BLU PUMP SW ITCH #1 RED/BLK YEL PUMP #1 WHI SW1A BLK VACUUM SWITCH #2 VACUUM SWITCH #1 C I R C U I T B O A R D J4-1 2 3 4 5 6 7 8 9