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Bunn AFPO-3 - page 1
BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www .bunnomatic.com OPERA TING & SER VICE MANU AL AFPO-2 AFPO-2 SL AFPO-3 AFPO-3 SL F L A V O R I N P U T 1 2 W A T E R I N P U T F L A V O R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T W A T E R O U T P U T R ...
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Bunn AFPO-3 - page 2
2 INTRODUCTION This equipment supplies a liquid concentrate mixed with water at various ratios to the hoppers on the CDS-2 or CDS-3 dispensers. It is for indoor use only on a sturdy counter or shelf. WARRANTY Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship ex ...
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Bunn AFPO-3 - page 3
3 ELECTRICAL REQUIREMENTS CAUTION - The dispenser must be disconnected from the power sour ce until specified in Initial Set-Up. The 120 volt version of this dispenser has an attached cordset and requires 2-wire, grounded ser vice rated 120 volts ac, 15 amp, single phase, 60 Hz. The mating connector must be a NEMA 5-15R. The 230 volt CE version req ...
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Bunn AFPO-3 - page 4
4 28791 040501 5. Connect one end of input hoses to the auto refill box and the other end to the product container. Product container connectors (BIB) are not supplied. Install your own interface. 6. Connect water line to auto refill box. A minimum of 20 psi (138 kPa) is required. NOTE: Make sure all connections are made before connecting the auto ...
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Bunn AFPO-3 - page 5
5 Mix ratio (water/flavor) Time for FLAVOR OUTPUT (1/2 cup) Time for WATER OUTPUT (1 cup) 1+1 assume 20 sec. or obtain time per note below 40 sec. or 2 times flavor output time 2+1 assume 20 sec. or obtain time per note below 20 sec. or equal to flavor output time 3+1 assume 20 sec. or obtain time per note below 13.3 sec. or 0.67 times flavor outpu ...
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Bunn AFPO-3 - page 6
6 OPERA TING CONTROLS 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. 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 cir cuit to operate independently . FLA VOR INPUT 1 2 ...
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Bunn AFPO-3 - page 7
7 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 qual ...
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Bunn AFPO-3 - page 8
8 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE 6. Main ON/OFF switch 7. Probe box LOW/OFF/HIGH switches 8. Circuit board 9. Vacuum switch 10. Vacuum/Supply pump 11. Pump (flavor) start switches 1. No water 2. Needle valve 3. Solenoids 1. Motor overheat REMEDY Refer to Service - Main ON/OFF Switch for testing procedure. See page 12 Refer to Servic ...
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Bunn AFPO-3 - page 9
9 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 electri- cal equipment should be performed only by qualified service perso ...
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Bunn AFPO-3 - page 10
10 SERVICE CIRCUIT BOARD OFF OFF O N OFF OFF O N OFF OFF O N OFF OFF O N FIG. 2 CIRCUIT BOARD P1520 Location: The circuit board is located inside the autofill box, mounted on the right side of the solenoid mounting bracket under the switch panel. Test Procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect the ten pin plug on th ...
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Bunn AFPO-3 - page 11
11 SERVICE Location: The fuse holder is located on the lower right front of the autofill box just to the left of the power cord. Test Procedure: 1. Disconnect the dispenser from the power source. 2. Remove cap and fuse from fuse holder. 3. Remove fuse from the cap. 4. Check for continuity through the fuse. If continuity is present, reinstall the fu ...
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Bunn AFPO-3 - page 12
12 P1522 FIG. 7 MAIN ON/OFF SWITCH TERMINALS BLK from Fuse Holder BLK to Solenoid (Water) Switch #2 AFPO-2 & 3 MAIN ON/OFF SWITCH F L A V O R I N P U T 1 2 W A T E R I N P U T R E F I L L M A I N P O W E R 2 1 1 2 3 3 3 F L A V O R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T W A T E R ...
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Bunn AFPO-3 - page 13
13 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. 5. With the probe box switch in the “LOW” position check the resistance across the pins, refer to Fig. 10. 6. I ...
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Bunn AFPO-3 - page 14
14 F L A V O R I N P U T 1 2 W A T E R I N P U T R E F I L L M A I N P O W E R 2 1 1 2 3 3 3 F L A V O R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T W A T E R O U T P U T SERVICE (cont.) PUMP (FLA VOR) ON/OFF SWITCHES Location: The pump (flavor) START switches are located on the switch mou ...
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Bunn AFPO-3 - page 15
15 SERVICE (cont.) REFILL SWITCHES FIG. 14 REFILL SWITCHES Location: The refill switches are located on the upper right front of the autofill box. T est Procedures: 1. Disconnect the dispenser from the power source. 2. Disconnect the two white/red, brown/black or red/ black wires from the switch terminals. 3. Connect the dispenser to the power sour ...
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Bunn AFPO-3 - page 16
16 SERVICE (cont.) SOLENOIDS FIG. 16 SOLENOIDS Location: The solenoids are located inside the autofill box. T est Procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect the white/violet, violet or blue wire and the white wire from the solenoid. 3. Connect the dispenser to the power source. Press the solenoid (water) switch, and ...
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Bunn AFPO-3 - page 17
17 SERVICE (cont.) SOLENOID (W A TER) ON/OFF SWITCHES F L A V O R I N P U T 1 2 W A T E R I N P U T R E F I L L M A I N P O W E R 2 1 1 2 3 3 3 F L A V O R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T W A T E R O U T P U T FIG.18 SOLENOID (WATER) ON/OFF SWITCHES P1521 Location: The solenoid ...
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Bunn AFPO-3 - page 18
18 F L A V O R I N P U T 1 2 W A T E R I N P U T R E F I L L M A I N P O W E R 2 1 1 2 3 3 3 F L A V O R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T W A T E R O U T P U T SERVICE (cont.) TEST/OPERA TE ON/OFF SWITCH FIG. 20 TEST/OPERA TE SWITCH Location The test/operate switch is located in ...
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Bunn AFPO-3 - page 19
19 SERVICE (cont.) V ACUUM/SUPPL Y PUMP ASSEMBL Y FIG. 22 V ACUUM/SUPPL Y PUMP ASSEMBL Y P1521 Location: The vacuum/supply pumps are located inside the autofill box. T est Procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect the white wire from the pump lead and the yellow, orange or red wire from the other lead. 3. Connect t ...
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Bunn AFPO-3 - page 20
20 SERVICE (cont.) V ACUUM/SUPPL Y PUMP TUBE INST ALLA TION FIG. 24 TUBING START POSITION P1542 ROLLERS PUMP HEAD TUBING KEY ENTRY PORT EXIT PORT FIG. 25 TUBING LOADED ROTOR ROTOR SHAFT P1541 28791 040501 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 i ...
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Bunn AFPO-3 - page 21
21 V ACUUM SWITCHES FIG. 26 V ACUUM SWITCHES Location: The vacuum switches are located inside autofill box, mounted on the left side of the solenoid mount- ing bracket just below the needle valves. Test Procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect flavor input lines. 3. Disconnect white/red, red/black or the brown/ bl ...
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Bunn AFPO-3 - page 22
22 F L A V O R IN P U T 1 2 W A T E R IN P U T F L A V O R O U T P U T F L A V O R O U T P U T W A T E R O U T P U T W A T E R O U T P U T R E F IL L M A IN P O W E R 2 1 1 2 BUNN ® M o v i n g P a r t s . D o n o t o p e r a t e u n i t w i t h t h i s p a n e l r e m o v e d . R i s k O f E l e c t r i c a l S h o c k . D i s c o n n e c t p o w ...
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Bunn AFPO-3 - page 23
23 GRN SOL #1 SOL #2 PUMP #1 PUMP #2 10 AMP MAIN ON/OFF SWITCH REFILL ON/OFF SWITCH #1 REFILL ON/OFF SWITCH #2 J4-1 2 3 4 5 6 7 8 9 J4-10 C I R C U I T B O A R D L1 N BLK BLK BLK B L K B L K B L K SOLENOID SWITCH #2 PUMP SW ITCH #2 PUMP SW ITCH #1 T E S T / O P E R A T E S W I T C H BRN/BLK BRN/BLK BRN/BLK VIO VIO BLK ORN BLU BLU YEL RED/BLK RED/BL ...
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Bunn AFPO-3 - page 24
24 GRN SOL #1 SOL #2 PUMP #1 PUMP #2 10 AMP MAIN ON/OFF SWITCH REFILL ON/OFF SWITCH #1 REFILL ON/OFF SWITCH #3 REFILL ON/OFF SWITCH #2 J4-1 2 3 4 5 6 7 8 9 J4-10 C I R C U I T B O A R D L1 N BLK BLK BLK B L K B L K B L K PUMP SWITCH #2 PUMP SW ITCH #1 T E S T / O P E R A T E S W I T C H BRN/BLK BRN/BLK BRN/BLK VIO VIO BLK ORN BLU BLU YEL RED/BLK RE ...
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Bunn AFPO-3 - page 25
25 28791 011500 GRN SOL #1 SOL #2 PUMP #1 PUMP #2 10 AMP MAIN ON/OFF SWITCH REFILL ON/OFF SWITCH #1 REFILL ON/OFF SWITCH #2 J4-1 2 3 4 5 6 7 8 9 J4-10 C I R C U I T B O A R D L1 L2 BLK BLK BLK B L K B L K B L K SOLENOID SWITCH #2 PUMP SW ITCH #2 PUMP SW ITCH #1 T E S T / O P E R A T E S W I T C H BRN/BLK BRN/BLK BRN/BLK VIO VIO BLK ORN BLU BLU YEL ...
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