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Quantum Series Installation and Service Manual
- 17 - 720901120
Machine continues to
dispense after dis-
pense button is
released or dis-
penses without
operator input
Portion control pad stuck in
on position
Disconnect the wire harness from
the rear of the portion control
and close the door. If unit does
not dispense on its own the por-
tion control is bad (stuck on)
Relay on voltage regulator
board (VRB) stuck on.
Disconnect the 4-wire harness
from the lower right corner of
the VRB. If the unit continues to
dispense on its own the VRB is
defective (relay stuck on)
Sold Out light illumi-
nates when concen-
trate no longer
passes through the
pump.
The concentrate is improp-
erly thawed. The tem-
perature is not
maintained between
34×F - 40×F(1.1-4.5×C)
Assure proper thawing procedures
have been followed per the
Minute Maid company instruc-
tions.
Check that McDonald’s walk-in
cooler temperature is on the
proper set point.
Check the dispenser cabinet tem-
perature is at 34×F - 40×F(1.1-
4.5×C).
High Brix readings result in
a poor, pulsating/splash-
ing dispense, erratic
pump amp draw, and
consequently erratic
sold-out indications.
Check drink brix in procedure
described on equipment P.M.
card using the hydrometer pro-
vided.
Check the drink flow rate under
normal operating conditions.
The dispenser should pour a
drink at a flow rate of approxi-
mately 1.5 oz. Per second or
greater. If the flow rate is less, a
check described in the Sold Out
section should be completed.