Components Visual Inspection; Ice-Bank Sensor & Agitator Check; Concentrate-Pump Hose Replacement - Cornelius NITROPRO MINI Service And Preventative Maintenance Manual

Nitropro Mini Service Manual
4.0 PREVENTATIVE MAINTENANCE (Cont.)
4.3.3.1 Measuring TDS (Total Dissolved Solids)
(Cont.)
OPTION 3: MANUALLY CHECKING VOLUME
RATIO (Cont.)
9) Set 10 seconds timer and dispense concentrate
by pulling the Left Tap Handle.
10) a) If weight is greater than #6 target, use the
'DOWN' button on controller to slow the con-
centrate motor down.
b) If weight is less than #6 target, use the 'UP'
button on controller to speed up the concen-
trate motor.
11) Set 10 seconds timer and dispense concen-
trate by pulling the Left Tap Handle until tar-
get value from #6 is within +/- 2 grams of
target.
12) Turn water on to unit.
13) Pull the Left Tap Handle for 10 seconds until
coffee is dispensed.
14) Pull the Right Tap Handle for 10 seconds until
coffee is dispensed.

4.3.4 Components Visual Inspection

1) Check the condition of each system component
for the following conditions and replace per
the instructions in section 6.0 if any are
observed.
Air/Water Hoses: Cracking, bulging, leaking.
Hose Connectors: Cracking, leaking, worn or
distorted o-rings or seals.
Ice Bank & Inlet Solenoid Spring Housing (Fig.
3-9): Water Discoloration, Contamination, Sed-
iment. (Attempt drain and flush before replac-
ing component.)
Main PCB (Fig. 2-2): Corrosion or signs of over-
heated components.
Dispense Manifolds (Fig. 3-12): Check o-rings
on top portion of dispensing tubes and on the
dispensing tube, outlet-cap nipple that inserts
into the manifold. If the manifold drips, check
Publication Number: 548000106SER
the solenoid valve plunger seal and o-ring on
the orifice insert (Fig. 4-4). Replace as the man-
ifold assembly as required.
Figure 4-4 - Dispense Manifold Assembly
Cabinet Fan (Fig. 4-1): Verify operation.
Refrigeration System (Fig. 4-1): Verify ade-
quate airflow through condenser coil. Clean as
needed.

4.3.5 Concentrate-Pump Hose Replacement

Over time, the concentrate-pump internal hose
can become less pliable and the rotor and top
bearing significantly worn. To prevent a disruptive
failure, install a new pump hose annually as
described below.
Pump Closed
Figure 4-5 - Concentrate Pump & Overhaul Kit
- 18 -
Pump Open
Pump Hose
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