Cushman Spraytek DS175, Safety & Operation Manual

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SPRAYER OPERATION 6
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6.4 SPRAYER SYSTEM CHECK _________________________________________________
Before operating the Spraytek, the following components
should be checked to ensure proper operation of sprayer.
1. Sprayer Tank and Tank Frame.
• Inspect frame for broken welds and cracks. Make
sure all mounting hardware is properly tightened.
• Inspect sprayer tank for cracks or leaks.
• Inspect the lid and gasket for warpage or leaks.
Clean any dirt or other debris from lid threads and
gasket. Apply a light lubricant to gasket (such as
silicon spray).
• Check lid check vent. Remove any residue from
ball and seat. Check hinge pin.
• Remove lid and strainer basket. Visually inspect
the interior of the tank for flaking or residue build
up. Check anti-vortex plate in sump area for debris.
Blocked suction can cause damage to the pump.
• Check jet agitator venturi nozzle position. Aim as
necessary for proper agitation.
• Check ceramic orifices in agitator nozzles for
cracks or blockage. Improperly functioning orifices
can lead to reduced agitation and possible mixing
problems.
2. Sprayer Pump.
• Inspect suction and pressure hose for cracks or
any damage that could cause a leak.
• Check pump for seal leakage at rear weep holes
around rear shaft bearing.
• Check plastic vent tube from top of pump for kinks
or dried powder products.
• Inspect and clean suction strainer screen.
• Inspect bowl and gasket. Improper gasket seating
can result in poor pump performance. If necessary,
replace gasket before operating unit. During bowl
replacement, install bowl and tighten hand tight.
DO Not use tools to tighten bowl.
• Between loads, wipe bowl with rag to maintain
clarity.
• Check to be sure suction ball valve is open and
free from damage.
• Make sure agitation valve is fully open. Due to the
unique design of the tank sump and anti-vortex
area, turning the agitation down or off with low fluid
level in tank is not required.
3. Spray Boom.
• Inspect support frame and mounting hardware for
loose, damaged or missing components. Repair or
replace if required before operating Spraytek.
• Adjust return spring tension for stiffer or looser
action. With vehicle tires properly inflated for load
and tank full of water, make sure boom is level and
adjusted to the proper height (See Boom
Accessory instructions for adjustments).
• Grease boom hinges (Breakaway booms) and
remove any debris which may have accumulated
on and around the pivot plate area.
• Inspect boom end caps for cracks or leaks. Repair
as required.
• Between spray loads, check and clean all boom
nozzle assemblies. Inspect check valve
diaphragms for tears or warpage. Check and clean
tips with a soft nylon brush (DO NOT use metal or
hard brushes, tip damage will occur). Clean
strainer screens and tip gaskets. Replace worn or
damaged items as needed. Proper tip
maintenance will result in optimum performance
and pattern development.
4. Boom Control Systems.
The Spraytek will have one of the following control
systems. Identify which system is used on your
machine.
Motorized Boom Controls:
• Check battery connections for proper pole hook-up
(+ / -). Make sure all wires connected to the clips
and their fasteners are tight.
• Check control box mount and console wing nuts for
tightness. Clean dirty console with a damp cloth
(mild soap), DO NOT use solvents to clean the
console.
• Check all toggle switches for play and replace as
needed. If switches are rubber booted, check boots
for cracks or tears and replace as necessary.
• Check control console pressure gauge bezel (clear
plastic ring which holds gauge into console). The
raised tabs should be in the 6 and 12 o'clock
positions.
• Check back side of console and make sure power
& control cables are locked into the pin connectors.
Replace the rubber boot if it shows signs of
excessive wear or cracking.
• Check fuse and rubber boot.