Specifications

Part Number STH12 9/10 119
Electrical System
Qualifier
Probable
Cause
Corrective Action
Fuse/Circuit
Breaker is
open.
Short Circuit or
overload within
unit.
Push Toggle Switches labeled carbonator
and circulator to the OFF position. Push the
Toggle Switches for Booster Pump, Air
Compressor, Agitator and Refrigeration to
the OFF position. Replace fuse(s) and
reset circuit breaker. Push the Toggle
Switches ON in the following sequence as
labeled below, to locate short or overload
within unit, waiting momentarily between
steps. *Agitator *Refrigeration *Carbonator
A and/or B *Circulator A and/or B (after
carbonator Motor Cycles OFF) *Booster
Pump *Air Compressor.
Push the Agitator Toggle Switch in the ON
position. If the fuse/circuit breaker opens,
the trouble is in the Agitator Motor Circuit.
This Circuit must be checked for shorts
and/or overload. If the fuse/circuit breaker
does not open after running about 1
minute, the problem is not in the Agitator
Motor Circuit.
Push the Refrigeration Toggle Switch in the
ON position. If the fuses/circuit breaker
opens, the trouble is in the Refrigeration
Circuit. Refer to wiring diagram for possible
faulty components. Push the carbonator
Toggle Switch A to the ON position. Draw
Carbonated Water from the Dispensing
valve until Pump cycles. If the fuse/circuit
breaker opens, the trouble is in the
carbonator Circuit. Refer to wiring diagram
for possible faulty components.
Push the carbonator Toggle Switch B to the
ON position. Follow procedure above for
carbonator A. Push the Circulator Toggle
Switch A to the ON position. If fuse/circuit
breaker opens, the trouble is in the
Circulator Circuit. Refer to wiring diagram
for possible faulty components. Push the
Circulator Toggle Switch B to the ON
position. Follow procedure above for
Circulator A.
Push the Booster Pump Toggle Switch to
the ON position (allow unit to cycle). If
fuse/circuit breaker opens, the trouble is in
the Booster Pump Circuit. Refer to wiring
diagram for possible faulty components.
Push the Air Compressor Toggle Switch to
the ON position. (Allow unit to cycle). If
fuse/circuit breaker opens, the trouble is in
the Air Compressor Circuit. Refer to wiring
diagram for possible faulty components.
Important Note: Worn out Circuit Breakers
or low voltage are frequently responsible
for shorts and overloads. Contact service
agent to examine possible defective Circuit
Breakers or low voltage.