Specifications

00218012 Revision B (KAK) 7 August, 2000
16
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 4: Compressed Air System
Until repairs can be made on Compressed Air System, place Air/CO2 Change-over Valve in the CO2 Oper-
ating position.
Qualifier Probable Cause Corrective Action
Air Compressor will not
cycle on and Air Pres-
sure Gauge registers
0psi.
Air Compressor cycles
on and off and Air
Pressure Gauge readings
range between 70 psi
(4.9 kg/cm
2
) to 90 psi
(6.3 kg/cm
2
).
No power to Air Compres-
sor.
Pressure Switch defective.
Motor defective.
Pump frozen.
Air/CO
2 Change-over Valve
placed in incorrect posi-
tion.
Malfunction of Syrup Sys-
tem.
Malfunction of Refrigera-
tion System.
Verify Toggle Switch to Air Compressor is in the
on position and main power supply is on.
Remove Pressure Switch Cover and use a volt-
meter across Switch to determine whether
open or closed. If in open position, re-
place switch.
Verify voltage across Motor with a voltmeter, if
Motor/Pump assembly will not operate, it is de-
fective and should be replaced.
Same as above for Motor defective.
Place Air/CO
2 Change-over Valve to the Air or
CO
2 operating position.
Note: If lever is positioned between Air and
CO
2 the gas supply is shut off to syrup sys-
tem.
Refer to Troubleshooting Section 8: Syrup Sys-
tem, under No syrup.
Refer to Troubleshooting Section 7: Refrigera-
tion System, under No carbonated water at
dispensing valves (freeze up).
No syrup