Importance of Active Charge
System
• Controls the freeze and thaw of product
• Maintains pressure stability of product barrel to prevent P-
Max Condition
– Below 28 Psig the expansion tank will be filled with product not allowing for
expansion to continue, resulting in a P-Max.
– Higher than 38 Psig will also cause P-Max because of the dead band of the
active charge regulator
• Active Charge Regulator set at 30 psig.
– Turn off machine, and dispensing product out of barrel until tank pressure of 0
Psig
– Measure pressure at active charge regulator with standard tire gauge
17
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