©Copyright Task Force Tips LLC 2003-2020
9
LIU-030 August 24, 2020 Rev10
7.6 FOAM QUALITY
Foam quality with the Medium Expansion Nozzle will depend upon the velocity of the foam solution exiting the nozzle. When pumping
high pressures to the PRO/pak, it may be necessary to partially close the flow control valve to make good foam with the Medium
Expansion Nozzle. If the foam exiting the Medium Expansion Nozzle is not a coherent continuous stream, close the flow control valve
slightly until the foam becomes a coherent continuous rope-like stream.
TO SHUT DOWN
To prevent concentrate from drying in the agent passages the following
is recommended. While still connected to water supply, remove Circle
Cotters and Pull Pins. Remove Control Unit from tank. Attach the Cap
directly to the Quick-Connect on the Control Block. Turn the valve
halfway on until the discharge is agent free. This will backflush a small
amount of water through the agent passage. Rotate the Percentage
Knob back and forth to make sure all agent passages are flushed.
TO CLEAN OUT IF PLUGGED
Remove screw #2, spring #3, and knob #4. Inspect the underside
of the knob. Make sure the agent passages are clear. Do not
scratch the flat face of the knob. Inspect the 2 holes in the top of
the Control Block #5. If they are plugged, pull pins #1, remove
Block Assembly and clean out Pickup Tube and holes.
Figure 7.6A
INSTALL CAP
ROTATE
OPEN SLIGHTLY
Figure 7.6B
PULL
CLEAN
UNSCREW
#1
#2
#3
#4
#5
