Download Fountain Troubleshooting Guide

Multiplex Company, Inc.
Fountain Troubleshooting Guide
Troubleshooting Guide
WARNING: Inspection, testing, and repair of electrical equipment should be performed only by
qualified service personnel. The unit should be
unplugged when servicing, except when electrical tests are required.
DANGER: Use extreme care during electrical circuit tests. Live circuits may be exposed.
Section 1: CO2 Gas System (continued)
Qualifier
Probable Cause
Corrective Action
Flat drinks (lack of carbonation in carbonated water)
CO2 Supply exhausted (CO2
Tank is functionally empty
if pressure reads less than
500 psi [34.5 bar]).
Verify CO2 Tank pressure is a minimum of
500 psi (34.5 bar) on the Primary Pressure Regulator Gauge marked 0-2000 psi. Replace tank if
necessary.
Primary Regulator out of
adjustment or inoperative.
Verify CO2 Primary Regulators are set at 90 psi
(6.3 kg/cm2). Adjust if necessary. If Regulator
will not stay in adjustment, replace Regulator.
A and B CO2 Tank Changeover Valve incorrectly positioned.
If A and B CO2 Tank Change-over Valve is positioned on an empty Tank or halfway between A
and B operating positions, CO2 is not supplied
to Carbonators. Insure valve handler is in the
“operating” position.
Malfunction of the Refrigeration System.
Refer to Troubleshooting “Section 7: Refrigeration System” under Warm drinks.
Water Filter restricted.
Refer to Troubleshooting “Section 10: Water
Filter System” under Peculiar taste.
Malfunction of the Carbonated Water System.
Refer to Troubleshooting “Section 2: Carbonated Water System” under Flat drinks.
Excessive carbonation
(foaming).
Primary Regulators set too
high.
Verify CO2 Primary Regulators are set at 90 psi
(6.3 kg/cm2). Adjust if necessary. If Regulator
will not stay in adjustment, replace regulator.
Replace.
Low Pressure CO2 Warning light or buzzer does
not come “on”.
Warning lamp or buzzer
burned out. Transformer
inoperative.
When CO 2 Tank is empty and CO 2 warning
lamp(s) or buzzer fail, verify voltage across
Transformer. If no voltage, replace Transformer.
Pressure Switch defective.
If CO2 Warning lamps or buzzer and transformer
are operative. Pressure Switch is defective and
must be replaced.
Primary Regulator (less
than 500 psi [34.5 bar]).
CO 2 Supply adequate
(greater than 500 psi
[34.5 bar]).
00218012 Revision C (KAK) 1 November, 2001
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