Auger Motors - Bunn -O-MATIC ULTRA-1 Service And Repair Manual

SERVICE(CONT.)

AUGER MOTORS

FIG. 1 AUGER MOTORS
Location
The auger motors are located at the upper rear of the
dispenser chassis inside the auger motor covers.
Test Procedures
1. Remove the hopper from the same side as the motor
to be tested.
2. Turn "ON" the appropriate auger switch.
3. Nudge the auger to start it turning.
If the auger doesn't turn, replace the motor.
If auger starts to turn, replace the start capacitor.
WARNING: The compressor start capacitor must be properly
discharged before removing. This is most commonly done
on low voltage capacitors by shorting across the terminals
with a screwdriver.
Removal and Replacement
1. Remove the two #8 locking screws securing the auger
ULTRA-2 shown
2. Remove the cover and set aside for reassembly.
3. Remove the #8 locking screw on the lower right side of
4. Disconnect the auger motor terminal from the terminal
5. Remove the three remaining #8 locking screws secur-
6. Remove motor with mounting bracket, drip tray, split
NOTE: When removing or installing the motor be sure the
split pin in the motor shaft is turned to a position that will
clear the torque sensor circuit board.
P1341
7. Install new motor with mounting bracket, drip tray, split
8. Install the auger motor capacitor on the lower right side
9. Connect the auger motor terminal to the terminal on the
10. Refer to Fig. 2 when reconnecting the wires.
23
motor cover to the cooling drum mount assembly.
the auger motor mounting bracket securing the auger
motor run capacitor. Set capacitor aside with wires at-
tached.
on the main wiring harness.
ing the auger motor mounting bracket to cooling drum
mounting bracket.
pin and torsion spring bearing as an assembly.
pin and torsion spring bearing using three #8 locking
screws onto the cooling drum bracket.
of the auger mounting bracket, using the remaining #8
locking screw.
main wiring harness.
ULTRA-2 LEFT AUGER MOTOR
J1-1 BRN/WHI to Left Auger Motor Capacitor
ULTRA-2 RIGHT AUGER MOTOR
J1-1 WHI/RED to Right Auger Motor Capacitor
J1-1 Boost Coil
J1-2 Run Coil
J1-3 Common
FIG. 2 AUGER MOTOR TERMINALS
MOTOR COIL RESISTANCE
J1-3 to: J1-1 = 58 ohms
WHITE BLACK
J1-2 BRN/BLK to J5-3 of Control Board
J1-3 WHI to Main Harness
J1-2 RED/BLK to J5-1 of Control Board
J1-3 WHI to Main Harness
ULTRA-1 AUGER MOTOR
J1-1 BRN/WHI to Auger Motor Capacitor
J1-2 BRN/BLK to J10-9 of Control Board
J1-3 WHI to Main Harness
J1-2 = 58 ohms
RED
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