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  5. Operating & Service Manual

Bunn AF PR-2 Operating & Service Manual

Summary of AF PR-2

  • Page 1

    Bunn ® operating & service manual bunn-o-matic corporation post office box 3227 springfield, illinois 62708-3227 phone: (217) 529-6601 fax: (217) 529-6644 28791.0001b 1/00 ©1998 bunn-o-matic corporation af pr-2 af pr-3 afpr-3 version discontinued the information in this manual is no longer current..

  • Page 2

    2 introduction this equipment supplies a premixed liquid product to the hoppers on the cds-2 or 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 de- fects in material and ...

  • Page 3

    3 initial set-up note: this refill unit should not be used to initially fill the hopper. Running the motor for extended periods will trip the thermal switch. The thermal switch will reset, but requires up to 30 minutes of cooling time. Note: hoses, clamps and product container connectors are not sup...

  • Page 4

    4 cleaning recommended weekly cleaning: this should be done in conjunction with the recommended weekly cleaning of your cds-2 or cds-3 machine. The cds 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 co...

  • Page 5: Operating Controls

    5 operating 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 circ...

  • Page 6

    6 problem 1. Empty product container 2. No power or incorrect voltage to the dispenser 3. Signal cable unplugged 4. Hopper is full 5. Fuse and fuse holder 6. Main on/off switch 7. Probe box low/off/high switch- es 8. Circuit board 9. Vacuum switches 10. Vacuum/supply pump 1. Motor over heats replace...

  • Page 7

    7 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 s...

  • Page 8

    8 removal and replacement: 1. Disconnect the ten pin plug from the main wiring harness to the circuit board. 2. Remove the six #4-40 screws and spacers securing the circuit board to the solenoid mounting bracket. Remove circuit board and discard. 3. Install new circuit board using #4-40 screws and s...

  • Page 9

    9 fig. 4 fuse holder fuse and fuse holder p1561 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 ca...

  • Page 10

    10 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 7 when reconnectin...

  • Page 11

    11 fig. 8 probe switches 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. 8b. Probe system p1523 p1539 fig. 8b probe box cabl...

  • Page 12

    12 service (cont.) refill switches fig. 12 refill switches location: the refill switches are located on the upper right front of the autofill box. Test procedures: 1. Disconnect the dispenser from the power source. 2. Disconnect the two white/red, brown/black or red/ black wires from the switch term...

  • Page 13

    13 service (cont.) vacuum/supply pump assembly fig. 16 vacuum/supply pump assembly p1560 location: the vacuum/supply pumps are located inside the autofill box. Test procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect the white wire from the pump lead and the yellow, orange or...

  • Page 14

    14 service (cont.) vacuum/supply pump tube installation 1. Separate the pump head from the pump body. Hold pump head as shown in fig. 18, with roller in the 2, 6 10 o’clock positions. 2. Wrap tubing around rollers and hold as shown in fig. 18. 3. Insert the slot of the tubing key (supplied), as show...

  • Page 15

    15 vacuum switches fig. 16 vacuum switches location: the vacuum switches are located inside autofill box, mounted on the left side of the mounting bracket. Test procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect flavor input lines. 3. Disconnect white/red, red/black or the b...

  • Page 16

    16 28791.1 011500

  • Page 17

    17 28791.1 011500