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200
175
150
125
100
250 GPM
75
50
25
0
0
3.3 PATTERN CONTROL
The MASTER FOAM's spray pattern is adjustable from straight stream to a 90° wide fog. Turning the stream shaper clockwise (as
seen from the operating position behind the nozzle -see fi gure 2.3) moves the shaper to the straight stream position. Turning the
shaper counterclockwise will result in an increasingly wider pattern. Only 90° of rotation is required to go from wide fog to straight
stream. The widest pattern is useful for protection and cooling but doesn't educt foam.
Since the stream trim point varies with fl ow, the stream should be "trimmed" after establishing a steady fl ow. To properly trim the
stream, fi rst open to a narrow fog. Then close the stream to parallel to give maximum reach. NOTE: Turning the shaper further
forward will cause stream crossover and reduce the reach of the nozzle.
Wide
Fog
3.4 FLUSHING DEBRIS
Small debris in the water may get caught inside the nozzle. This trapped material will cause poor stream quality, shortened reach and
reduced fl ow. To remove debris trapped in the nozzle:
• Shut off fl ow to the nozzle.
• Unscrew baffl e (see fi gure 2.3) using 1-1/8 inch (28mm) socket.
• Remove debris. Flow water to fl ush if necessary.
• Reinstall baffl e. Tighten to approximately 30 ft-lbs (40 Newton-Meters).
WARNING
Larger debris can get caught in the nozzle ahead of the cast vane. If this occurs uncouple the nozzle to clear the blockage.
©Copyright Task Force Tips, Inc. 2003 - 2011
350 GPM
100
200
300
400
FLOW (GPM)
Fig 2.1 MASTER FOAM Flows
Straight
Stream
Fig 2.3 Pattern Control and Flushing
Fig 2.3 Pattern Control and Flushing
Large amounts of debris may be unfl ushable and can reduce the fl ow of the nozzle resulting in an
ineffective fl ow. In the event of a blockage, it may be necessary to retreat to a safe area.
500 GPM
750 GPM
500
600
700
800
900
4
OPERATING RANGE:
150 PSI MAXIMUM
50 PSI MINIMUM
BURST PRESSURE
IS 1000 PSI
1000
Remove baffle to flush
1-1/8" (28mm) socket
tighten to 30 ft-lbs
(40 newton-meters)
LIZ-030 September 27, 2011 Rev07
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