Specifications

98 Part Number STH12 9/10
Checklist
If a problem arises during operation of your post mix
soda refrigeration unit, follow the checklist below.
Routine adjustments and maintenance procedures are
not covered by the warranty.
!
Warning
Only trained and certified electrical and plumbing
technicians must service this unit. All wiring and
plumbing must conform to national and local
codes.
Problem Possible Cause To Correct
Water only
dispensing:
No pressure
Regulator(s) out of
adjustment
Check/adjust regulator(s).
Out of CO
2
Install fresh tank.
Defective regulator(s) Check/repair/replace
regulator(s).
CO
2
line pinched,
kinked, or obstructed
Check/repair/replace CO
2
line.
Syrup and CO
2
only
dispensing:
Carbonator
No power Check power supply. Plug in
carbonator or reset breaker.
Water supply Make sure water is turned ON.
Replace water filter.
Check/clean/replace pump
strainer.
Check/clean/repair water check
valve.
Check for frozen water line.
Internal Carbonator unit only.
Defective carbonator Check/repair/replace carbonator
pump, motor, electrode or liquid
level control.
Syrup and plain
water only
dispensing: No
pressure
Out of CO
2
Install fresh tank.
HP regulator out of
adjustment
Adjust HP regulator to the proper
setting.
Defective HP
regulator
Check/repair/replace HP
regulator.
CO
2
line pinched,
kinked, or obstructed
Check/repair/replace CO
2
line.
One valve will not
dispense anything:
Is there power to
the valve?
Broken wire or loose
connection
Replace/repair wire or connector.
Bad microswitch Replace microswitch.