Bunn FMD-1 - Manual (Page 12)

12
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-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 by opening the
door, removal of the door panels, dispenser top cov-
ers, hopper, hopper suppor plate, splash guard, splash
panel w/drip tray, lower front access panel, side and
rear access covers.
Refer to the contents listing for component loca-
tion.
Contents
Auger Drive Components ...................................... 12
Auger Motor ......................................................... 12
Ballast ................................................................... 14
Control Thermostat ............................................... 15
Dispense Switch ................................................... 16
Fan ........................................................................ 17
Frother ................................................................. 18
Hopper Delay Board .............................................. 20
Lamp Holder ......................................................... 21
Lamp .................................................................... 21
Lamp Starter and Socket ...................................... 22
Level Control Board and Level Probe .................... 22
Limit Thermostat .................................................. 24
Overflow Protection Switch .................................. 24
Rinse/Run Switch ................................................. 25
Solenoid (Dispense) ............................................. 26
Solenoid (Inlet) ..................................................... 27
Tank Heater .......................................................... 28
Tank Heater Switch ............................................... 29
Whipper Motor ..................................................... 18
Wiring Diagram .................................................... 30
FIG. 1 AUGER DRIVE COMPONENTS
Location
The auger components are located inside the
bottom part of the hopper except for the auger drive
bracket, washer and locknut, which are located on the
outside rear of the hopper base. The auger motor is
located on the lower right rear of the motor mounting
panel. Refer to Fig. 2 for disassembly and assembly.
Test Procedures - Auger motors
1.
Disconnect the dispenser from the power source.
2. Disconnect the wires from the motor.
3. Check the voltage across the red wire and the
gray wire with a voltmeter. Press and hold the
dispense switch. Connect the dispenser to the
power supply. The indication must be :
a) 120 volts ac for two wire 120 volt models.
b) 120 volts ac for three wire 120/208 volt or
120/240 volt models.
4. Disconnect the dispenser from the power sup-
ply.
If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to the wir-
ing diagram and check the dispenser wiring harness.
AUGER DRIVE COMPONENTS
P1505