Specifications

00218012 Revision B (KAK) 7 August, 2000
22
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.
Problem occurs at all
valves on one (1) dis-
pensing tower.
Problem occurs at only
one (1) dispensing
valve.
Valve will not shut
off.
No power to transformer or
transformer defective.
Dispensing towers on
and off is Switch defec-
tive.
Poor connection on valve
Wire Harness.
Portion Control Timer in-
operative.
Selection Switch inopera-
tive.
Poor connection at Contact
Clips on Selection Panel
(with Portion Control
Timer).
Moisture on Portion Con-
trol Timer or Contact Clips.
Portion Control Timer Ad-
justment Screw turned
beyond control limit.
Portion Control Timer de-
fective.
Selection Panel defective.
No water or insufficient water in finished drinks (continued)
Section 5: Dispensing Valve and Tower (continued)
Qualifier Probable Cause Corrective Action
Verify power with a voltmeter at wall outlet.
Verify power across low voltage leads on trans-
former. If 24 volts are present on and off
Toggle Switch is defective. Replace.
Verify Main Power Supply and power at Trans-
former Leads replace on and off Switch if
operative.
Trace wiring on defective valve and reconnect
any loose wires. Clean and reconnect any cor-
roded connections.
Replace the problem valve Portion Control
Timer with a known Operative Timer. If valve
then operates, Portion Control Timer was de-
fective. Replace.
Replace defective Portion Control Timer with
operative Timer. If Valves still will not activate,
Selection Panel is defective. Replace Selection
Switch.
Examine Contact Clips on Selection Panel and
insure proper contact between Portion Control
Timer and Contact Clips.
Remove top cover from Dispensing Tower. Re-
move all moisture from Portion Control Timer
and Contacts.
Turn Portion Control Adjustment Screws on de-
fective valve counterclockwise 10 complete
turns. If valve shuts off when selection is
pressed, readjust for proper portions.
Note: Several revolutions may be necessary to
bring control back into range.
Verify above probables are not the problem.
Push on/off Switch for Dispensing Tower to
the off position. If valve ceases to dispense
when pushed to on position, Portion Control
Timer is defective. Replace.
Push on/off Switch for dispensing tower to
the off position. If valve ceases and then
continues to dispense when switch is pushed in
on position, Selection Panel is defective.
Replace.