Bunn AF PR-2 Operating & Service Manual Download Page 3

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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 supplied. Fittings and labels are supplied. Make 

hose assemblies as required.

1.  Assemble hoppers with probe housing assemblies  to CDS-2, CDS-3 or modify existing hoppers using tem-

plate provided.

2.  Make sure probe housing assembly is pushed down into slots on back of hoppers.

3.  Install cable assembly to the lower right front  of the auto refill box and the probe housing assemblies on the 

hoppers. The connectors on the cable pushes in and cap rotates 1/4 turn to lock into position.

4.  Run output tubes from auto refill box to the quick disconnects in the hoppers.

 NOTE:  Make sure numbers on the labels match up. Cable#1 with Hose#1, Cable#2 with Hose#2...ect.

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.

 

NOTE:  Make sure all connections are made before connecting the auto refill box to the power source.

6.  Each product container has an ON/OFF refill switch located on the front of the auto refill box. A second switch 

for each hopper is at the probe housing assembly. These are 3 position switches, high level, low level and a 

center “OFF” position. 

7.  Place the main ON/OFF switch and ON/OFF refill switches in the “OFF” position.

8.  Make sure all hoses are connected. Connect the dispenser to the power source and place the main ON/OFF 

switch in the “ON” position.

9.  Place one of the ON/OFF refill switches in the “ON” position,  after a four second delay product will begin to 

flow through the hoses into the hopper. Be sure the switch selected is filling the correct hopper, if not, check 

the labels. See NOTE in step #4.

10. To test refill circuit short out probes on one of the hoppers with a screwdriver, that hopper should shut off, 

remove the screwdriver and the hopper will start to fill again after a four second delay. If hopper does not 

start to fill, check labels, refer to NOTE in step #4.

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 200 volt or 240 volt versions require 2 wire, grounded service rated 200 volts ac or 240 volts ac, single 

phase, 50 Hz.
(Refer to the dispenser’s data plate for exact voltage requirement.)

ELECTRICAL HOOk-UP

CAUTION – Improper electrical installation will damage electronic components.

1.  An electrician must provide electrical service as specified.

2.  Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.

3.  Connect the dispenser to the power source. 

28791.1 011500

Summary of Contents for AF PR-2

Page 1: ...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 info...

Page 2: ...cations to this warranty or to make additional warranties that are binding on Bunn Accordingly statements by such individuals whether oral or written do not constitute warranties and should not be rel...

Page 3: ...switches high level low level and a center OFF position 7 Place the main ON OFF switch and ON OFF refill switches in the OFF position 8 Make sure all hoses are connected Connect the dispenser to the...

Page 4: ...y 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...

Page 5: ...the main power switch These allow each circuit to operate independently of the other P2052 C PROBE CONTROL BOX LOW OFF HIGH On models equipped with a dual level probe there is a LOW OFF HIGH switch l...

Page 6: ...Fuse Holder for test procedures See page 8 Refer to Service Main ON OFF Switch for testing procedure See page 9 Refer to Service Probe System See page 10 Refer to Service Circuit Board for testing pro...

Page 7: ...es to plug in the dispenser COMPONENT ACCESS WARNING Disconnect the dispenser from the power source before the removal of any panel or the replace ment of any component All components are accessible b...

Page 8: ...BOARD P1556 O F F O N O F F O N O F F O N SERVICE Location The circuit board is located inside the autofill box mounted on the right side of the vacuum switch mounting Test Procedure 1 Disconnect the...

Page 9: ...lace the fuse 28791 1 011500 BLK from Main Wiring Harness BLK to Main ON OFF Switch FIG 5 FUSE HOLDER TERMINALS P1331 Removal and Replacement Fuse 1 Remove the cap from the fuse holder 2 Removefusefro...

Page 10: ...o the main ON OFF switch Disconnect the white wire from pump 1 3 Check for voltage across the black wires removed from the switch and the white wire removed from pump 1 Connect the dispenser to the po...

Page 11: ...oss the signal cable pins see Fig 8A 6 If readings match values indicated the probe system electrically is functioning properly If not check the probe boxes 5 With the probe box switch in the LOW posi...

Page 12: ...diagrams and check the dispenser wiring harness 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 posi...

Page 13: ...from the pump leads 2 Disconnect the input and output tubes 3 Removethefourthumbscrewssecuringthepump head to the pump body discard pump head with tubes 4 Remove the two 8 32 keps nuts securing the pu...

Page 14: ...p head cavity 4 Push down and turn the key counterclockwise to guide the tubing deep into the pump head cavity as shown in Fig 19 5 Hold the tubing and rotor in the pump head and remove key carefully...

Page 15: ...32 keps nuts securing the pump and bracket to main panel 5 Disconnect the yellow and white wires from the pump 6 Remove pump and bracket as an assembly 7 Disconnecttheinputtubesfromthevacuumswitch to...

Page 16: ...16 28791 1 011500...

Page 17: ...17 28791 1 011500...

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