Manitowoc Multiplex MII-302, Installation, Use & Care Manual

Page: 38 / 40

Before Calling for Service Section 5
5-2
Part Number 5031216 01/09
Drink Troubleshooting
Condition Investigation Check Correction
Water only dispensing No pressure Regulator(s) out of adjustment Check/adjust regulator(s).
Out of CO
2
Install fresh tank.
Defective regulator(s) Check/repair/replace regulator(s).
CO
2
line pinched, kinked or
obstructed
Check/repair/replace CO
2
line.
Syrup and CO
2
only
dispensing
Carbonator No power Check power supply. Plug in carbonator
or reset breaker.
Water supply Make sure water is turned “on”.
Replace water filter.
Check/clean/replace pump strainer.
Check/clean/repair water check valve.
Check for frozen water line. Internal
carbonator unit only .
Defective carbonator Check/repair/replace carbonator pump,
motor, electrode or liquid level control.
Syrup and plain water
only dispensing setting No pressure Out of CO
2
Install fresh tank.
HP regulator out of adjustment Adjust HP regulator to the proper setting.
Defective HP regulator Check/repair/replace HP regulator.
CO
2
line pinched, kinked or
obstructed
Check/repair/replace CO
2
line.
One valve will not
dispense anything Is there power to the
valve? Broken wire or loose connection Replace/repair wire or connector.
Bad microswitch Replace microswitch.
Beverage dispensed is
too sweet Is the ratio (brix) of the
drink correct? Flow control out of adjustment Adjust the flow control.
Insufficient soda flow due to low
carbonator pressure Adjust CO
2
pressure or change the tank.
Low CO
2
pressure due to leaks Repair CO
2
leaks.
Obstruction in the water or soda
line Clean out the lines.
Beverage is not sweet
enough Is the ratio (brix) of the
drink correct? Flow control out of adjustment Adjust the flow control.
Soda flow too high Reset CO
2
pressure or replace regulator
if necessary.
Obstruction in syrup line Clean out the syrup line.
Drinks are foaming Are system pressures
correct? Over carbonation Check CO
2
supply. Reset pressure or
replace regulator if necessary.
Dirty lines/valves Clean/sanitize entire system.
No water, syrup or gas
dispensing Is there power to the
unit? No power Plug in unit or reset breaker.
Power to control box Replace fuse or control box.
Is power coming
through the key
switch? Key switch “off” Turn switch “on”.
Key switch defective Replace key switch.
Is there power to the
key switch? No power through the transformer Reset/replace transformer.