Pattern Control; Flush Control; Standard/Low Pressure Knob Mid-Force & Dual-Force - Task Force Tips MID-FORCE Instructions For Installation, Operation And Maintenance

5.2

PATTERN CONTROL

TFT nozzles have full pattern control from straight stream to wide fog. Turning the stream shaper clockwise (as seen from the operating
position behind the nozzle) moves the shaper to the straight stream position. Turning the shaper counterclockwise will result in an
increasingly wider pattern.
Since the stream trim point varies with flow, the stream should be "trimmed" after changing the flow to obtain the straightest and farthest
reaching stream. To properly trim the stream, first open the pattern to narrow fog. Then close the stream to parallel to give maximum
reach. Turning the shaper further forward will cause stream crossover and reduce the effective reach of the nozzle.
WARNING
CAUTION
NOTICE
5.2.1

FLUSH CONTROL

Small debris passes through the debris screen (if so equipped) and may get caught
inside the nozzle. This trapped material will cause poor stream quality, shortened reach,
and reduced flow. To remove small debris, the nozzle may be flushed as follows:
• While still flowing water, rotate the shaper counterclockwise (as viewed from
behind the nozzle) to the flush position. (increased resistance will be felt on the
SHAPER as the nozzle goes into flush) This will open the nozzle allowing debris
to pass through.
• During flush the nozzle reaction will decrease as the pattern becomes wider and
the pressure drops. The nozzle operator must be prepared for an increase of
nozzle reaction when returning the nozzle from the flush position to retain
control of the nozzle.
• Rotate the shaper out of flush to continue normal operations.
WARNING
5.3 STANDARD/LOW PRESSURE KNOB MID-FORCE & DUAL-FORCE
For situations where the standard pressure setting at the nozzle is impractical, the MID-FORCE or DUAL FORCE may be switched to a
low pressure mode. In the low pressure mode the nozzle pressure is reduced by about 50% while maintaining a usable stream and
increasing the flow. The nozzle operator must be prepared for a change in reaction when changing modes.
To switch to the low pressure mode:
1. Shut off water flow with valve
2. Turn knob at front of nozzle counterclockwise (when viewed from front).
3. Reopen valve to flow water at reduced pressure.
Repeat the process, except turn knob clockwise, to return to standard pressure operation.
Mid-Force
Standard Operating Mode
©Copyright Task Force Tips LLC 2002-2024
The nozzle reaction is greatest when the shaper is in the straight stream position. Sudden changes
in pattern can cause changes in reaction, leading to loss of footing or an out of control nozzle. The
nozzle operator must be prepared for a change in reaction as the pattern is changed.
Dents or nicks in the nozzle tip can seriously affect the stream reach or pattern, which may increase
the risk of injury due to exposure. Care must be taken to avoid dents or nicks in the nozzle tip.
Turning the shaper further forward will cause stream crossover and reduce the reach of the nozzle.
Large amounts or pieces of debris may be unflushable and can reduce the flow of the nozzle
resulting in an ineffective flow. In the event of a blockage, it may be necessary to retreat to a safe
area, uncouple the nozzle and remove debris.
Dual-Force
Knob In
Mid-Force
Figure 5.3
13
Figure 5.2.1
Dual-Force
Knob In
Low Pressure Mode
LIN-035 May 20, 2024 Rev17