Cornelius Quest NT 4000, Руководство по обслуживанию

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Quest Service Manual
© 2004-2014, Cornelius Inc. - 13 - Publication Number: 720901117SER
• Main water solenoid/strainer
located at the rear of dispenser is
clogged, binding or defective
• Remove and clean strainer.
Confirm 28VDC is present at sole-
noid during dispense. Confirm
solenoid coil is not open. Disas-
semble and clean solenoid.
• Water supply pressure is
greater than 80 psi (5.5 bar) forc-
ing the brix flow control closed
• Add external regulator and
lower pressure to 50 psi (3.5 bar)
• Freeze-up of water coil in ice
bath
• Unplug dispenser and allow 2-4
hours to thaw. Check operation of
agitator motor and ice bank con-
trol.
• • Refrigeration system may be
low on charge resulting in a
deformed ice bank and freeze-up
of the water coil in the ice bath.
No water and no con-
centrate, refrigeration
is working
• Black service switch located on
the rear of the cabinet door in OFF
position
• Turn on switch
• White door switch open • Door switch must be closed in
order to dispense. Check switch
operation and replace if neces-
sary.
• 6.25 amp fuse inside front elec-
trical box blown
• Replace with 6.25, 250VAC
slow blow fuse and test
• No output from Transformer • Confirm transformer output by of
26VAC +/- 2. Replace transformer
if necessary.
• Defective voltage regulator
board (VRB) located inside front
electrical box
• Measure across the VDC output
of the board. There should be
28VDC present when the dispense
button is pressed. Replaced VRB if
necessary.
• Defective dispense push button
or portion control board
• Test and replace if necessary
No concentrate dis-
pensed, water only
• Concentrate container not fully
engaged into receptacle on pump
platform
• Refer to Concentrate Loading
section of this manual
• Dispense/Flush lever in FLUSH
position
• Move lever to DISPENSE posi-
tion
• Concentrate too cold, not properly
thawed • Concentrate should be 35-40°F
(1.7-4.5°C) prior to loading
• Defective pump motor • Replace pump motor
Warm Drink
• Ambient air around dispenser is
too warm • Relocate dispenser
PROBLEM PROBABLE CAUSE REMEDY