Bunn FMD-3 service manual Dispense Switch, Fan, Location

Page 18

SERVICE (cont.)

DISPENSE SWITCH (cont.)

6.Check for continuity across the terminals on the dispense switch with the switch in the “ON” pressed position. Continuity must not be present when the switch is in the “OFF” released posi- tion.

If continuity is present as described, reconnect the connector to the door interconnect wiring harness, the switch is operating properly.

If continuity is not present as described, replace the switch.

Removal and Replacement

1.Open the dispenser door.

2.Remove the five #6-32 screws securing the bot- tom door cover and remove cover.

3.Disconnect the wires on the dispense switch to be removed from the door interconnect wiring harness.

4.Compress the clips inside the door on the dis- pense switch and gently push the switch through the opening.

5.Push new switch into the opening and spread the clips to hold the switch in the door.

6.Reconnect the wires to the dispense switch from door interconnect wiring harness.

7.Reinstall the door bottom cover using five #6-32 screws.

8.Refer to Fig. 9 when reinstalling wires.

 

BLK

 

 

RED/BLK

 

 

BLK

 

 

RED/WHI

 

BLK

 

 

RED

RIGHT

 

 

FMD 2 & 3

 

CENTER

 

 

FMD-3 ONLY

 

 

LEFT

 

 

FMD 2 &3

 

 

FIG. 9 DISPENSE SWITCH TERMINALS

P1449

FAN

 

FIG. 10 FAN

P1436

 

Location:

The fan is located inside the dispenser hous- ing on the right rear of the dispenser base plate.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the black and white wires from the fan terminals.

3.Check the voltage across the black and white wires with a voltmeter. Connect the dispenser to the power source. The indication must be:

a)120 volts ac for two wire 120 volts models.

b)120 volts ac for three wire 120/208 volt or 120/ 240 volt models.

c)240 volts ac for two wire 240 volt models.

If voltage is present as described, replace the fan

If voltage is not present as described, refer to wiring diagram and check the dispenser wiring harness.

Removal and Replacement:

1.Disconnect the vacuum hose from the fan.

2.Remove the two #8-32 locking screws securing the fan to the dispenser housing base plate.

3.Disconnect the wires from the fan terminals and discard the fan

4.Refer to Fig.11 and connect the wires to the new fan.

5.Install new fan through the rear access hole and secure to the dispenser housing base plate using two #8-32 locking screws.

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28364 071598

 

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Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty FMD-2 FMD-326536.0002 00656.0000 00831.000028368.0000 FMD-2Initial SET-UP Initial Fill & Heat Plumbing HOOK-UPDraining the HOT Water Tank Problem Probable Cause RemedyTroubleshooting Replacement Control thermostatStat for testing procedures. See Leaks Product overflows container Dispense switchDripping from dispense tip Lime build-up ColdProblem Probable Cause RemedyNoises Water Supply Tank Heater Excess dust Fan Refer to Service Lamp, see page 23 for lamp replacementDispenser is making unusual Display not lit Lamp Lamp Holder Starter Lamp BallastComponent Access ContentsAuger Drive Components Off of the auger drive shaft Hopper Lid Auger Wire Agitator Disc AssyIf voltage is present as described, proceed to #5 Auger Drive Shaft Optional Bushing Ejector ElbowAuger Drive Components Remove dust seal 18 from auger motorRefer to when reconnecting the wires BallastHarness BLK to BLU From Door Interconnect Remove temperature probe from the tank Control ThermostatDispense Switch Control ThermostatLocation Dispense Switch FANLocation Steam Collector Ring Mixing Chamber #8-32 Acorn Nut FANFrother and Whipper Motor Washer Ring Nut FrotherFrother and Whipper Motor Hopper Delay Board Whipper Motor Terminals P1451.40HOT/COLD Switch Optional Disconnect the wires from the switch termi- nalsDoor Assy Upper Panel Lamp Holders Lower Panel Lamp Replacement Refer to FigLamp Holder Remove the outside window and display graphicAs assembly Lamp Starter and SocketLevel Control Board and Level Probe Level Control Board and Level Probe Limit Thermostat Limit ThermostatOverflow Protection Switch From Main HarnessBoard Rinse /RUN Switch RINSE/RUN SwitchSolenoid Valve Cold Water Optional Cold Water Solenoid ValveCold Water Solenoid Terminals Solenoid Valves DispenseSolenoid Valves Dispense Solenoid Valve InletSolenoid Valve Inlet Tank HeaterMain Wiring Thermostat Harness Tank Heater SwitchTank Heater Tank Heater Switch Tank Heater Switch TerminalsSchematic Wiring Diagram FMD-1, FMD-2, & FMD-3 Schematic Wiring Diagram FMDA-1, FMDA-2, & FMDA-3