Specifications

00218012 Revision B (KAK) 7 August, 2000
14
Multiplex Company, Inc.
Fountain Troubleshooting Guide
Troubleshooting Guide
WARNING: Inspection, testing, and repair of elec-
trical equipment should be performed only by
qualified service personnel. The unit should be
unplugged when servicing, except when electri-
cal tests are required.
DANGER: Use extreme care during electrical cir-
cuit tests. Live circuits may be exposed.
Section 3: Circulating System
Qualifier Probable Cause Corrective Action
Drinks warm throughout
the day, warm all the
time.
Drinks warm during pe-
riods of low demand,
much colder during pe-
riods of high demand.
Carbon Particles in fin-
ished drink.
No CO
2 gas or water
present at dispensing
valve.
Malfunction of Refrigera-
tion System.
No power to Circulating
Motor.
Motor defective.
Circulating Pump defec-
tive (stainless steel).
Malfunction of Water Fil-
ter.
Malfunction of Carbonated
Water System.
Circulating Pump defec-
tive (Stainless Steel).
Refer to Troubleshooting Section 7: Refrigera-
tion System under Warm drinks (carbonated
water temperature over 40°F [5°C]).
Verify Switch to Circulating Motor is in the on
position and Main Power Supply is on.
Using a flat-blade screwdriver, loosen the Cou-
pling Clamp and disengage Pump from Motor. If
Motor will not operate, verify voltage across
Motor Terminal with voltmeter. If voltage reads
from 110 to 120 VAC, the Motor is defective
and should be replaced.
Dispense approximately 1gallon of carbonated
water at dispensing valves. If temperature of
carbonated water drops, Circulating pump is
not operating. Examine Coupling Key found
between Pump and Motor Shaft. If coupling key
is defective, replace. If key is operational, Cir-
culating pump is defective, replace.
Refer to Troubleshooting Section 10: Water
Filter System under Carbon particles in fin-
ished drinks.
Refer to Troubleshooting Section 2: Carbon-
ated Water System under Carbon particles in
finished drinks.
Remove top cover from Refrigeration Unit.
Loosen Coupling Clamp with a flat-blade screw-
driver and disengage Pump from Motor. Turn
Pump shaft with screwdriver. If Pump does not
turn freely and/or carbon is found in Pump,
carbon veins in pump are defective. Replace
Circulating Pump.
Warm drinks