Active Flow Control

Active Flow Control
The J-41810-100A Active Flow Control (AFC) protects the PureGuard 2 from damage caused by flooding from liquid refrigerant, oil or leak dye. A 1 amp delay reaction fuse protects the internal electronics in the AFC. The chance that this fuse will burn out is very minimal but if it does, it can be easily diagnosed as follows:

^ The red light in the AFC will be on.

^ The PureGuard 2 will go through the warm-up procedure and test the ACR4 tank.

^ The manifold gauges will show A/C system pressure (if there is refrigerant left in the system), but the PureGuard 2 will not run a test even though the low side gauge shows over 30 psi of pressure.

^ The fail-safe design of the AFC keeps its internal solenoid valve closed in a "no power" condition and no refrigerant will flow into the PureGuard 2.