32
6.2.6 OVERRIDE HANDWHEELS
In the event of electrical system failure on the monitor or fire truck
the Monsoon Monitor is factory supplied with handwheels or knobs
so the monitor may be manually operated. The factory supplied
handwheels are 6 inches in diameter. To make the Monsoon RC
more compact the manual override handwheels may be removed.
The drive shafts have a hex so a wrench or socket may be used for
manual override. Each drive shaft also has a secondary hex at
midshaft so the shaft may be shortened by cutting and still have a
wrenching hex. The wrenching hexes are shown in figure 6.2.3.
Fig 6.2.3
Wrenching Hexes on Drive Shafts
6.3 RECOMMENDED STOWING POSITION
For truck mounted applications it is recommended that the monitor
be stowed in a position such that the monitor's nozzle rests against
a bracket or support surface. If a support surface is not available,
run the elevation against one of its travel stops to take some of the
backlash out of the gear drive. This will minimize bouncing of the
nozzle when the apparatus is traveling. Always be sure the
monitor is properly stowed before moving the truck and know the
overall height to avoid damage from overhead obstructions such
as doors or bridges.
6.4 FLOWS AND PRESSURES
6.4.1 STACKED TIPS FLOW AND REACH
3.5-6
N
H
Remove cap and install
smaller tips if desired.
Such as Model #MST-4NJ
(1-3/8", 1-1/2", 1-3/4", 2")
Integral Stream
2-3/4"
2-1/2"
2-1/4"
2"
Protective Cap
Straightener
Fig 6.4.1A
Stacked Tip Model YST-4NN
2
840
310
920
380
1060
500
1190
630
2.25
1060
400
1170
480
1350
640
1500
790
2.5
1310
490
1440
590
1660
790
1860
980
2.75
1590
590
1740
710
2010
950
-----
-----
Nozzle Pressure (PSI)
Nozzle
50
60
80
100
Diameter Flow
Reaction
Flow
Reaction Flow
Reaction
Flow Reaction
(inches)
GPM
lbf
GPM
lbf
GPM
lbf
GPM
lbf
FIG 6.4.1B
Stacked Tip Flow Table
50
3180
140
3480
170
4010
230
4500
290
57
4010
180
4430
220
5110
290
5680
360
64
4960
220
5450
270
6280
360
7040
450
70
6020
270
6590
320
7610
430
-----
-----
Nozzle Pressure (BAR)
Nozzle
3.5
4.1
5.5
7
Diameter Flow
Reaction
Flow
Reaction Flow
Reaction
Flow Reaction
(MM)
l/min
kg
l/min
kg
l/min
kg
l/min
kg
14.5 psi
bar
= 1
1 gpm = 3.785 l/min