ICI TOPPER Installation And Service Manual page 28

4. All connections including cylinder valve should be coated with a soap solution. If
bubbles appear a leak is apparent.
S. Always be sure that the low-pressure adjusting screw is completely backed off before
testing carbonator circuit for leaks. Otherwise, gas going into syrup tanks would cause
this high-pressure gauge needle to balance with pressure in syrup tanks, which would be
a false indication of a leak in the carbonator circuit.
6. After it has been determined that there are no leaks in the carbonator circuit, open
C02 cylinder valve and adjust low-pressure regulator to 15 psi. Allow enough time for the
syrup tanks to fill completely with gas, (5 minutes or longer).
7. Next, completely back off low-pressure regulator adjusting screw, and if gauge needle
of low-pressure regulator commence to move downward, there is leak in the low-pressure
circuit. Check all connections with a soap solution, paying particular attention to syrup
tank covers. If low-pressure gauge needle remains stationary, there is no leak.
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