Bunn POWDER AUTO FILL service manual Hopper Level Indicator

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SERVICE (cont.)

HOPPER LEVEL INDICATOR

Photo LED

Photo Transistor

P1932

FIG. 25 HOPPER LEVEL INDICATOR

Location:

The photo transistor and LED are located on the hopper side panels mounted just below the hopper guide rails.

Test Procedures:

Refer to the section CONTROL BOARD and LEVEL PROBE for test procedures.

Removal and Replacement:

1.Disconnect the dispenser from the power source and the water supply.

2.Remove the dispenser from the CDS machine and place it on a flat work surface.

3.Disconnect the door lamp cord from the lamp connector.

4.Remove the two #8-32 screws securing the door hinge to the dispenser housing.

5.Carefully pull the door forward until the door sup- port arms come completely out of the dispenser housing and set aside.

6.Remove the six #8-32 truss head screws securing the rear cover to the dispenser housing.

7.Remove the six #8-32 round head screws securing the front of the housing to the side panels.

8.Remove the six #8-32 truss head screws securing the back of the housing to the side panels.

9.Carefully lift and spread the housing to remove it from the rest of the dispenser.

10.Disconnect the photo transistor (J6) or LED (J2) plug from the control board.

11.Cut the cable tie securing the cable assembly to the cable tie mount.

12.Gently pull the photo transistor or LED from its mounting lens.

13.Pull the photo transistor or LED through the grom- met and free of the dispenser.

14.Snap the photo transistor or LED into the mounting lens and feed the cable end through the grommet.

15.Gently bend the cable flush to the cable tie mount and secure with new cable tie. Cut away excess cable tie.

16.Connect the photo transistor (J6) or LED (J2) plug to the control board.

17.Reassemble the dispenser top housing, rear panel, and door assembly to the dispenser.

18.Reconnect the dispenser to the power source and the water supply.

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Contents Bunn Powder Auto Fill Initial SET-UP WarrantyIntroduction User Notices Operating Instructions Adjustments Recommended Daily Cleaning and Maintenance Tips CleaningRinse and dry each item thoroughly before reas- sembling Fault List Normal operation Powder Auto-Fill ready toDispense Door not closedTroubleshooting Problem Probable CauseRemedy ProblemCDS product tastes watery or sugary Problem Probable Cause Remedy Procedures. See Improper adjustment of productInstall a regulator if necessary to Product overflows CDS hopper Control Board and ProbeService Component AccessAuger Drive Components Hopper LidRetainer Clip Spacer Dust Seal Hopper BaseDiagrams and check wiring harness Auger Drive MotorFrother and MIXING/WHIPPER Chamber Mixing ChamberWhipper Motor Volts ac for 120 volt models Volts ac for 230 volt CE modelsInstall dispense tip into the bottom of the whipper chamber Whipper MotorIf voltage is present as described, proceed to #5 If voltage is present as described, proceed to #9Test Procedure Low Product Detect Instal the new control board using the four #6-32 keps nuts Remove the control boardDisconnect the wires from the switch terminals TEST/SERVICE SwitchLocation Main Power ON/OFF Switch Main Power ON/OFF SwitchLamp Cord Assembly Refer to when reconnecting the wiresDisconnect the lamp cord from the lamp cord connector Lamp Cord ConnectorRemove new nut and washer from new lamp cord connector Lamp HOLDER/SOCKET Assembly Close the dispenser doorTransformer TransformerPotentiometer PotentiometerHopper Level Indicator Hopper Level IndicatorHopper Switch Hopper SwitchDoor Switch Door SwitchAdjustments Pressure Regulator and Needle ValveDispense Solenoid Valve Dispense Solenoid Valve LocationWiring Diagrams Schematic Wiring Diagram PAF BLK REDWiring Diagrams Schematic Wiring Diagram Pafa