Bunn FMD-3 Guía Del Usuario
14
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 unplugged
when servicing, except when electrical tests are re-
quired 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, hoppers, hopper support plate, splash guard,
splash panel with drip tray, lower front access panel,
side and rear access covers.
Contents
Auger Drive Components ...................................... 14
Auger Motor .......................................................... 17
Ballast ................................................................... 18
Control Board ........................................................ 19
Control Thermostat ............................................... 21
Dispense Switch ................................................... 23
Fan ........................................................................ 24
Frother ................................................................. 25
Hot/Cold Switch .................................................... 27
Increase/Decrease Switch ..................................... 28
Lamp Holder ......................................................... 29
Lamp .................................................................... 29
Lamp Starter and Socket ....................................... 30
Limit Thermostat ................................................... 31
Overflow Protection Switch ................................... 32
Rinse/Run Switch ................................................. 33
Solenoid (Cold Drink - Optional) ........................... 34
Solenoid (Dispense) .............................................. 35
Solenoid (Inlet) ..................................................... 36
Tank Heater ........................................................... 37
Tank Heater Switch ............................................... 39
Transformer .......................................................... 40
Whipper Motor ...................................................... 26
Wiring Diagrams .......................................... 41 & 42
FIG. 1 AUGER DRIVE COMPONENTS
AUGER DRIVE COMPONENTS
P1637.40
29170 080900
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 bottom rear of the hopper. The auger motors
are located on the rear of the auger motor mounting
panel. Refer to Figs. 2 and 3 for disassembly and as-
sembly.
Test Procedures - Auger motors:
1. Disconnect the dispenser from the power
source.
2. Disconnect the wires from the motor to be test-
ed.
3. With a voltmeter, check the voltage across the
positive (white/blue) wire for the right motor,
positive (white/orange) wire for the center motor
or the positive (white/red) wire for the left motor
and the negative (green) wire. With the rinse/run
switch in the run position, press and hold the ap-
propriate dispense switch. Connect the dispenser
to the power supply. After a .6 second delay the
indication must be 4.0 to 24.5 volts dc.
4. Disconnect the dispenser from the power sup-
ply.