Cornelius 2 Flavor Post-Mix Cold Coffee Dispenser Quest 2000, Service Manual

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Quest 2000 Service Manual
© 2004, IMI Cornelius Inc. - 9 - Publication Number: 720529901SER
• 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 control.
• • 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 necessary.
• 6.25 amp fuse inside front electri-
cal 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 neces-
sary.
• 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 sec-
tion of this manual
• Dispense/Flush lever in FLUSH
position • Move lever to DISPENSE position
• 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
• Excessive demand on dispenser • Add water pre-cooler or second
dispenser
• Dirty condenser coil • Clean condenser coil
• Inoperative condenser fan • Replace condenser fan motor
• Defective Ice Bank Control • Test and replace if necessary
• Loss of refrigerant charge due to
leak in system • Repair leak and recharge system
Water continuously
drips from nozzle
when in OFF mode • Main water solenoid at base of
unit or water solenoid on pump plat-
form not shutting off tightly • Clean solenoid(s), replace parts
as necessary (refer to the Planned
Maintenance Section)
Concentrate warm,
water cold • Cabinet fan inoperable • Check/replace fan
• Agitator motor/pump inoperable or
restricted • Check/replace agitator motor
• Loss of refrigerant charge due to
leak in system • Repair leak and recharge system
PROBLEM PROBABLE CAUSE REMEDY