Quest 2000 Service Manual
Publication Number: 720529901SER - 8 - © 2004, IMI Cornelius Inc.
TROUBLE-SHOOTING GUIDE
The following pages contain trouble-shooting information intended to aid an experienced service person
in diagnosing operational problems that may occur. For further assistance, contact the IMI Cornelius
Technical Services department at 1-888-248-5568 (763) 421-6120 outside the United States) between
the hours of 7:30A.M. and 5:00P.M. Central Standard Time. You must have the model and serial number
(Located on the right side of the dispenser) prior to calling.
PROBLEM PROBABLE CAUSE REMEDY
Totally Inoperative • No power to dispenser due to
tripped circuit breaker
• Reset circuit breaker. Confirm that
breaker is correct size and no other
equipment is operating on the same
circuit. Also confirm that supply volt-
age is +/- 10% of nameplate specifi-
cations.
• Loose or broken power supply
connection inside dispenser.
• Repair connection.
No cooling • Line voltage is not within +/- 10%
of nameplate specifications causing
compressor overload to trip
• Contact an electrician
• No water in water ice bath or water
level extremely low exposing the ice
bank sensing probe
• Fill ice bath to proper water level
• Defective Ice Bank Control or
sensing probe
• Replace
• Cabinet fan is inoperative resulting
in warm concentrate (water contin-
ues to cool)
• Replace
• Compressor short cycles on over-
load
• Excessively high discharge pres-
sure due to restricted condenser or
inoperative condenser fan motor
• Compressor starts but hums and
trips overload
• Seized or shorted compressor,
replace
• Defective compressor overload or
start capacitor
• Test and replace
• Compressor starts but does not
switch off of start winding
• Relay or compressor is defective.
Test and replace faulty item
• Refrigerant leak • Repair leak, evacuate and
recharge system
No water dispensed,
concentrate only
• No water to dispenser • Restore Water
• Water supply line inside refriger-
ated cabinet disconnected from
pump platform
• Reconnect
• Water solenoid located on pump
platform clogged or defective
• Disassemble and clean solenoid.
Replace if necessary.
• Main water solenoid/strainer
located at the rear of dispenser is
clogged, binding or defective
• Remove and clean strainer. Con-
firm 28VDC is present at solenoid
during dispense. Confirm solenoid
coil is not open. Disassemble and
clean solenoid.
• Water supply pressure is greater
than 80 psi (5.5 bar) forcing the brix
flow control closed
• Add external regulator and lower
pressure to 50 psi (3.5 bar)
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