Specifications

126 Part Number STH12 9/10
Low or no water pressure at noncarbonated beverages (continued)
Pump and Motor
cycles ON and OFF
excessively.
Leak on Booster
System.
Locate water leaks on system and
repair.
Check valve
defective.
Observe Filtered Water Pressure
Gauge. If pressure rises and drops
with Pressurized Filtered Water
Gauge, the Water Inlet Check valve
on Pump is defective. Replace Check
valve.
Pressure Switch
improperly
adjusted or
defective.
Observe Pressurized Filtered Water
Pressure Gauge to ensure proper
cycle ON at 65 psi (4.6 kg/cm
2
) and
cycle OFF at 85 psi (6.0 kg/cm
2
).
Refer to instructions found under
Switch Cover for adjusting. If Switch
will not respond to adjustment, replace
switch.
Accumulator
Tank pressure
set improperly.
Push Toggle Switch and Water
Shut-off Valve to Booster Pump to the
OFF position. Activate Plain Water
button until water flow ceases. Using a
tire gauge verify a 60 psi (4.2 kg/cm
2
)
charge on Tank. Recharge if
necessary.
Note: When charging Accumulator
Tank, only AIR should be used.
Accumulator
Tank bladder
ruptured.
Repeat procedures above. If water is
found inside Air Chamber when
verifying pressure charge, bladder is
ruptured. Replace Accumulator Tank.
Motor
overheating.
Using a flat-blade screwdriver, loosen
Coupling Clamp and disengage Pump
from Motor. Turn Coupling Key by
hand, in back of Pump. If Coupling
Key is difficult to turn, it may cause
defective Motor to overheat. Replace
Motor if necessary.
Peculiar taste in
Non-carbonated
beverages.
Water Filter
contaminated.
Replace Filter. Refer to
Troubleshooting “Water Filter System”
under Peculiar taste.
Accumulator
Tank bladder
ruptured.
Replace Accumulator Tank. Refer to
“Pump and Motor Cycle ON and OFF
excessively” Accumulator Tank
bladder ruptured.
Malfunction of
Carbonated
Water System.
Refer to Troubleshooting “Carbonated
Water System” under Peculiar taste,
Probable Cause: Back Flow Preventer
leaking.
Qualifier
Probable
Cause
Corrective Action