Condenser Fan Assembly - Bunn Ultra NX Service & Repair Manual

SERVICE - LEFT SIDE PANEL COMPONENTS

Condenser Fan Assembly

FIG. 31 CONDENSER FAN
Location:
The fan is located inside the dispenser chassis just
in front of the condenser.
Left Panel Removal:
1. Loosen 2 left side panel screws on the
underside of the machine.
2. Grab and lower the left panel while pulling the
bottom outward to remove panel.
3. If needed, repeat steps for right side panel.
Test Procedures:
1. Enter the software program and scroll to main
"Service Tools" menu.
3. Press the "Right Dot" switch to answer "Yes".
4. Press the "Center Dot" switch to advance onto
"Test Outputs" menu.
5. Press the "Right Dot" switch to answer "Yes".
6. Press the "Center Dot" switch to scroll through
the menus until "Fan Condenser" menu is
displayed.
NOTE: The "Fan Condenser" menu will allow the
operator or technician to test the operation of
the fan or and/or voltage output from the main
control board.
7. Press the "Left Dot" switch to answer "ON". Fan
should operate.
No fan operation, check fan for output voltage
from the control board
8. Press the "Right Dot" switch to answer "Off".
9. Disconnect the condenser fan motor spade
terminals from the machine wiring harness.
10. Check for voltage across the machine wiring
harness spade terminals that were connected
to the fan terminals when you turn "On" fan.
11. Press the "Left Dot" switch to answer "ON".
Voltage should be present.
12. Press the "Right Dot" switch to answer "Off.
NOTE: Power output to the condenser fan is
120V or 230V depending upon the model.
No voltage present - replace control board.
Yes voltage present - fan does not operate,
replace fan.
Condenser Fan Specifications:
Ultra NX 120V Models:
VOLTAGE: 115VAC/50-60HZ
MAX INPUT POWER: 31W
AMPERAGE: .46A
SPEED: 2100 ±100 RPM
Ultra NX 200-240V Models:
VOLTAGE: 230VAC/50-60HZ
MAX INPUT POWER: 31W
AMPERAGE: .24A
SPEED: 2100 ±100 RPM
Part Removal and Replacement:
1. With left and right side panels removed, go to
the right side and disconnect the condenser fan
motor spade terminals from the machine wiring
harness.
2. Go to the left side, remove 4 nuts securing fan
assembly to the machine frame. Retain nuts.
3. Remove the condenser fan assembly out the
left side and discard.
4. Reinstall replacement condenser fan assembly
and secure with the retained 4 nuts.
5. Reconnect fan spade terminals to the machine
wiring harness terminals.
50