OPERATION
3-4 / Husky 3 Foam System
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3-2. Flushing System
3-2.1 General Flushing Information
NOTE: For the purposes of this manual, it is assumed that Class A foam is the most commonly used agent
and that the system will be stored wet with Class A foam concentrate. If Class A foam is not the
primary agent, adjust procedures to accommodate the primary foam concentrate.
Typically, no flushing is needed. The Husky 3 foam pump is designed to be flooded with foam. Unless a different
brand of Class A foam was drafted, or Class B foam was drafted, the only system flush that is needed is to turn the
system OFF and continue flowing water until the presence of bubbles is minimal.
When beginning mop-up operations at the scene, turn the system OFF and use the foam that is left in the hose and
plumbing for mop-up.
When mop-up operations are complete and water pump is disengaged, make sure to relieve the pressure that is
trapped in Water/Foam system manifold plumbing by opening the manifold drain valve for a few seconds.
3-2.2 Manual Flush Mode
Figure 3-4: Manual Flush Mode
1333, 1322, 1311, 1334, 1335, 1336, 1325, 1364
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