Sprayer Operation; Spray System Components - Cushman Spraytek DS175 Safety & Operation Manual

6

SPRAYER OPERATION

6.1

SPRAY SYSTEM COMPONENTS _____________________________________________

The basic sprayer system components are listed below.
1. Spray Tank - containment for fluid and product mix
chamber. Tank is constructed of fiberglass and resin
compound with a 300 gallon (1135.5 L) capacity.
2. Anti-Vortex Plate - located in sump (lowest part of
tank interior), facilitates complete liquid draining
without causing pump cavitation (suction loss) or
prime break. This plate attaches to the suction
flange.
3. Suction Flange - external hose barb assembly on
tank sump area, connects tank to main suction
hose.
4. Suction Ball Valve - brass ball-valve which allows
fluid to be shut off during suction screen cleaning or
pump maintenance. Must be open during normal
operating conditions.
5. Suction Strainer - filters out particulate matter and
debris from supply tank. Extends pump life and
eliminates foreign objects which may disrupt normal
boom or spray-gun operations.
6. Centrifugal Pump - the center of the impeller has
an eye which allows liquid to pass through curved
guide vanes to expel water in an outward direction
(centrifugal force) towards the exit port on the
pumps outerhousing (volute).
Centrifugal Pump
Front Of Vehic le
7. Agitation Control Gate Valve - controls amount of
tank agitation by amount of liquid passing through
the Venturi
recommended this valve remain fully open at all
times, even if there is alow tank liquid level.
8. Jet Agitation Nozzle Assembly - a eight-head
Venturi nozzle assembly in the lower sump area
provides liquid agitation formixing loaded chemicals
with carrier (water).
9. Hose Reel (Not Shown)- this accessory is a hose
holding spool which allows hook-up of a hand-held
spray gun orwalking type spray boom. It holds
supply/spray hose for repeated use while keeping
hose and supplies organized.
10. Boom Controls (Not Shown)- supplies liquid to
boom control valves (manual) or motorized valve
assemblies for dispersal through the spray dispersal
bar (boom).
11. Boom Tubes (Not Shown)- SST pipe with nozzle
bodies attached evenly distributes spray liquid to turf
area (ground) with an over-lapping pattern. Nozzle
bodies are diaphragm check (drip free) and supply
liquid to the nozzle tips
exceeds 10 psi (69 kPa). When the boom shuts off
the diaphragms keep the tips from dripping and also
allows a quick air-free (hiss free) resumption of the
spray pattern.
Agitation Control
Gate Valve
Turn valve to use
hos e or boom
SPRAYER OPERATION
nozzle multiplier
when
Jet Agitation
Nozzle Assembly
Open valve to
us e boom.
Anti-Vortex
Plate
Close valve to
use hose.
Suction Flange
Suction Strainer
(Filter)
Suction Ball Valve
You can ser vice the pump and/or filter
wi th liquid in the tank , as long as the
l i i h
6
orifice. It is
liquid pressure
Close valve to ser vice
pump and/ or fi lter.
l d i i
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