Bunn AFPO-2 user manual

User manual for the device Bunn AFPO-2

Device: Bunn AFPO-2
Category: Water Dispenser
Manufacturer: Bunn
Size: 2.03 MB
Added : 8/10/2014
Number of pages: 25
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Abstracts of contents
Summary of the content on the page No. 1

®
AFPO-2
BUNN
AFPO-2 SL
AFPO-3
AFPO-3 SL
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
28791.0000E 4/01 ©1998 Bunn-O-Matic Corporation
1
REFILL
2
2 1
FLAVOR FLAVOR
OUTPUT OUTPUT
WATER MAIN
INPUT POWER
WATER WATER
1
OUTPUT OUTPUT

FLAVOR
INPUT

2
REFILL 1
3 2
3 2 1
FLAVOR FLAVOR FLAVOR
OUTPUT OUTPUT OUTPUT
WATER MAIN
INPUT POWER
WATER WATER WATER FLAVOR
OUTPUT OUTPU

Summary of the content on the page No. 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 existing at the time of manufacture and appearing within one year from the date of installation. In addition: 1.) Bunn warrants electronic circuit and/or co

Summary of the content on the page No. 3

ELECTRICAL REQUIREMENTS CAUTION - The dispenser must be disconnected from the power source until specified in Initial Set-Up. The 120 volt version of this dispenser has an attached cordset and requires 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. The mating connector must be a NEMA 5-15R. The 230 volt CE version requires 2 wire, grounded service rated 230V ac, single phase, 50 Hz. The 200 volt or 240 volt versions require 2 wire, grounded service rated 200 volts ac

Summary of the content on the page No. 4

INITIAL SET-UP (cont.) 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 refill box to the power source. 7. Each product container has an ON/OFF refill switch located on the front of the auto refill box. A second s

Summary of the content on the page No. 5

MIX RATIO ADJUSTMENTS(cont.) 6. Compare results with chart or formula below. 7. If the time observed is too short or long, turn the needle valve clockwise or counterclockwise, respectively, a little at a time. Repeat from the preceding step until correct. 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

Summary of the content on the page No. 6

OPERATING CONTROLS C B A P1949 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 circuit to operate independently. C. TEST/OPERATE The TEST/OPERATE switch is located inside the auto- fill box just below the top access cover. For setting flow rates and mix ratios for flavors,

Summary of the content on the page No. 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 qualified service personnel. • All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the appl

Summary of the content on the page No. 8

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 12 7. Probe box LOW/OFF/HIGH Refer to Service - Probe system. See switches page 13 8. Circuit board Refer to Service - Circuit Board for testing procedures. See page 10 9. Vacuum switch Refer to Service - Vacuum switch for testing procedures. See page 21 10. Vacuum/Supply pump Refer to Service - Vacuum/Supply pump for

Summary of the content on the page No. 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 personnel. The dispenser should be un- plugged when servicing, except when electrical tests are required and the test procedure specifically states to plug

Summary of the content on the page No. 10

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. 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. Disconnect the t

Summary of the content on the page No. 11

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. 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. Push the fuse holder through the hole in the

Summary of the content on the page No. 12

SERVICE (cont.) 5. Check for continuity across the switch terminals MAIN ON/OFF SWITCH 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. 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 th

Summary of the content on the page No. 13

Moving Parts. Risk Of Electrical Shock. Do not operate Disconnect power before unit with this servicing uni t. panel removed. CHARGE Type R22, Amount _ _ OZ. Design Pressures: High _ _ Low _ _ Suction Pressure _ _ SERVICE (cont.) PROBE SYSTEM 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. 1 2 300Ω AFPO-2 & 3 P

Summary of the content on the page No. 14

SERVICE (cont.) PUMP (FLAVOR) ON/OFF SWITCHES 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. #1 AFPO-2 & 3 P1521 BLK from Solenoid Switch #1 FIG.12 PUMP (FLAVOR) START SWITCHES BLK to Test/Operate Switch RED/BLK to Test/Operate Switch Location: YEL to Pump #1 The pump (flavor) START switches are located on

Summary of the content on the page No. 15

If continuity is present as described, reconnect the SERVICE (cont.) wires to the switch terminals. REFILL SWITCHES 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. 15 when reco

Summary of the content on the page No. 16

6. Check the solenoid valve for coil action. Connect SERVICE (cont.) the dispenser to the power source. Press the SOLENOIDS 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. If the sound is heard as described and water will not pass through the solenoid valve, there may be a blockage in the water inlet before the solenoid valve or, the solenoid valve may require

Summary of the content on the page No. 17

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. #1 AFPO-2 & 3 BLK from Pump Switch #2 P1521 BLK to Pump Switch #1 FIG.18 SOLENOID (WATER) ON/OFF SWITCHES BLU to Test/Operate Switch BLU to

Summary of the content on the page No. 18

SERVICE (cont.) a) 120 volts ac for two wire 120 volt models. TEST/OPERATE ON/OFF SWITCH b) 200 to 240 volts ac for two wire 200 or 240 volt models. c) 230 volts ac for two wire 230 volt models. 5. Disconnect the dispenser from the power source. 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

Summary of the content on the page No. 19

SERVICE (cont.) a) 120 volts ac for two wire 120 volt models. VACUUM/SUPPLY PUMP ASSEMBLY 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. 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. Pump Motor Removal and Replacement: NOTE: Do not disconnect or damage tubing. Tubing is not replaced wh

Summary of the content on the page No. 20

SERVICE (cont.) VACUUM/SUPPLY PUMP TUBE INSTALLATION ROLLERS 2. Separate the two halves of the pump and carefully remove the tubing from within. PUMP 3. Hold the new pump head as shown in Fig. 24, with HEAD rollers in the 2, 6, and 10 o’clock positions. 4. Reinstall tubing in the new pump head by wrap- ping the tubing around the rollers as shown in Fig. 24. 5. Insert the slot of the tubing key (supplied), as TUBING KEY shown in Fig. 24, on the rotor so the bottom edge of the key is pressing the


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