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Quest Elite QLT 2000 HC & Quest Elite QLT 2000
Symptom
A. Pump motor defective.
B. No power to transformer or no 24VAC output
Pump inoperative
C. Defective voltage regulator board (VRB)
D. Defective dispense control board (Push button
A. Push button or portion control pad stuck in
Machine continues to
dispense after dispense
button is released or dis-
penses without operator
B. Relay on voltage regulator board (VRB) stuck
input.
Water leaking from the
A. The O-ring from the cabinet quick connec-
cabinet through the cabi-
net drain into the drip
tray.
Publication Number: 620054882
Probable Cause
from transformer.
located inside front electrical box.
or portion control).
ON position.
on.
tor might be damaged or missing.
Table 1.
A. 28VDC should be present at pump motor
during dispense. If voltage is present &
motor does not start, replace motor.
B. Confirm transformer has line voltage present
on primary side. If no 24VAC output from sec-
ondary, replace transformer.
C. Confirm board produces 28VDC present when
dispense button is pressed (refer to Electrical
Box Wiring Diagram for VDC output location).
Replace VRB if necessary.
D. Test & replace if necessary.
A. Disconnect wire harness from rear of por-
tion control and close the door. If unit does
not dispense on its own, dispense control
board is bad (stuck on).
B. Disconnect 4-wire harness from lower right
comer of VRB. If unit continues to dispense on
its own VRB is defective (relay stuck on).
A. replace the O-ring
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Remedy
© 2011-2013, IMI Cornelius Inc.
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