Cf Cfive Solenoid Valves - Cfv/Autofill - Bunn Ultra NX Service & Repair Manual

CF CFIVE Solenoid Valves - CFV/Autofill

WV SV SV WV
FIG. 20 CFV AUTOFILL
Location:
Inside the auger motor cover, four CFV CFIVE
assemblies are present. Two for Water (no orifice)
and two for Syrup (with orifice).
WV: Water CF CFIVE Solenoid Valve Assy
SV: Syrup CF CFIVE Solenoid Valve Assy with
Pressure Switch
Rear Cover Removal:
1. Disconnect power from machine.
2. Lift hopper cover to remove dual inlet fitting
from hopper.
3. Remove 4 screws securing rear cover.
4. Grab cover with water and syrup line still
connected to the inlet barb fitting and gently
pull cover away from machine.
Test Procedure:
NOTE: The Dual Inlet Hopper Fitting is removed
from hopper during this Valve Test Procedure to
prevent any unwanted mix ratio entering already
ratio'd product in hopper.
If hopper is empty of product, test can be per-
formed on valve assemblies with Dual Inlet Hopper
Fitting still installed on empty hopper.
1. Ensure Dual Inlet Fitting removed from hopper
and/or use of temporary extension lines are put
inside an empty bucket for the purpose of
checking the flow of water and syrup from the
valve assemblies.
2. Enter the software program and scroll to main
"Auto Refill" menu.
3. Press the "Right Dot" switch to answer "Yes".
SERVICE - REAR COVER COMPONENTS
4. Press the "Center Dot" switch to advance onto
"Test Refill" menu.
5. Press the "Right Dot" switch to answer "Yes" to
advance onto "Left Refill Valve" menu.
6. Press the "Left Dot" switch to answer "ON". The
Left Refill Valves will energize to allow water
and syrup flow, press "OFF" by pressing the
"Right Dot" to stop test.
7. Press the "Center Dot" to advance onto "Right
Refill Valve" menu.
8. Press the "Left Dot" switch to answer "ON". The
Right Refill Valves will energize to allow water
and syrup flow, press "OFF" by pressing the
"Right Dot" to stop test.
If you hear a click sound or feel the magnetic pull
on top of the solenoid valve coil, the control board
output is operating correctly. If the water or syrup
fails to flow, check the CO
supply pressure (40 - 80psig) to operate the
CO pump and inlet water pressure within the
2
30 - 80psig requirement.
No click sound or magnetic pull, check valve coil
for control board output voltage to determine failure
between control board or CF CFIVE solenoid valve.
No power across valve coil - replace control board.
Yes power across valve coil- replace CFV CFIVE
solenoid valve.
Electrical Rating:
Ultra NX 120V Models:
CFV CFIVE Solenoid Valve: 24VDC
Ultra NX 200-240V Models:
CFV CFIVE Solenoid Valve: 24VDC
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source for adequate
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