Specifications

00218012 Revision B (KAK) 7 August, 2000
12
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.
Carbonated Water at
dispensing valve.
Peculiar taste in car-
bonated water only.
Liquid Level Control defec-
tive.
Electrode defective.
Water filter contaminated.
Back Flow Preventer Valve
leaking or Double Check
Valve leaking.
Carbonated water flowing
through materials other
than plastic or stainless.
Shut off main power supply to unit and push
Toggle Switch for Carbonator and Circulator to
the off position. Remove Electrical Access
Panel from Refrigeration Unit and locate Liq-
uid Level Control. Strip a 1
1
/2" (3.8 cm) piece
of solid strand wire of insulation to use as a
jumper. Turn main power supply unit on to
unit. With a pair of insulated pliers, jump across
Terminals marked G, H and L on Liquid Level
Control. Simultaneously, while pushing corre-
sponding Toggle Switch to carbonator to the
on position. If carbonator pump and motor
continue to operate after Liquid Level Control
Jumper Wire is in place, Liquid Level Control is
defective, replace.
Examine wire leads to insure no breaks in con-
nections. Remove and clean Electrode with find
sand paper and reinstall.
Note: Reversing Electrode Wire Leads on ei-
ther electrode or Liquid Level Control will
cause erratic operation of carbonator Motor.
Refer to Wiring Diagram.
Refer to Troubleshooting Section 10: Water
Filter System under Peculiar taste.
Push Toggle Switch for carbonator to the off
position. Turn Water Shut-off Valve to carbon-
ator to the off position. Remove tope cover
from Remote Refrigeration Unit. Carefully dis-
connect water line on the outlet side of the
carbonator pump. If water or CO
2 is observed
continually escaping from line, Back Flow Pre-
venter/Double Check Valve is leaking. Disas-
semble, clean, and replace if necessary.
Caution: Carbonated water must never be al-
lowed to flow through materials other than
plastic or stainless steel. (Copper, zinc or gal-
vanized material is non-acceptable.)
Trace carbonated water flow through system.
Insure no foreign materials are present. Replace
non-acceptable material if found.
Section 2: Carbonated Water System (continued)
Qualifier Probable Cause Corrective Action
Carbonator pump and motor will not cycle off (possibly noisy pump) (continued)