Great Plains 3P300 Operator Manual - Manual (Page 22)

20
Section 5 Maintenance and Lubrication
3/6/06 3P200 and 3P300 Three-Point Sprayer 500-103M
Great Plains Mfg., Inc.
Maintenance
Proper servicing and adjustment is the key to long life for
any implement. With careful and systematic inspection,
costly maintenance, repairs and down time can be avoided.
!
WARNING!
Before working on, servicing or making adjustments on sprayer,
always disengage power, shut off tractor engine, make sure all
moving parts have stopped, and all pressure in the system is re-
lieved.
•
Always wear rubber gloves when making repairs or ad-
justments.
•
Make sure all safety equipment mentioned in the Per-
sonal Safety Equipment portion of the “Important Safe-
ty Information” section on page
4., are stored in an
easily accessible place but protected from potential con-
tamination from dust or chemicals.
Equipment Cleanup
!
DANGER!
Read and follow chemical manufacturer’s instructions. Some
chemicals and cause serious burns, lung damage and even
death.
Nozzles should be cleaned with a low pressure (less than
30 psi) air hose, and periodically replaced. Haul a supply
tank of water so cleaning of the spray tank and applicator
can be done in the field. NEVER wash tank out in the yard
or at a car wash.
Dispose of leftover chemical in the same manner de-
scribed on the manufacturer’s label of the chemical last
used in the sprayer. Rinse out the tank and spray the rinse
water on the last field that was sprayed.
Flush the sprayer with fresh water and spray the water in
the field that was last sprayed. While the sprayer is being
flushed at the field, turn the boom section switches "on" to
flush the nozzles, then turn them "off" to flush out the throt-
tling valves and bypass lines (if equipped). Repeat this
procedure several times. Periodically clean each throttling
valve by unscrewing its gray knob until it stops. Flush it
with the fresh water by operating the pump with the boom
section switches "off". Reset the solenoid throttling valves
as described in Throttling Valve Adjustment on page
16.
The magnet-mount gauge protector shown in Figure 5-1
can be cleaned out periodically to prevent chemical build-
up under the gauge protector. To clean out the chemical
under the gauge protector (#1), remove the quick discon-
nect fitting (#2) and flush the gauge hose out into a clean
bucket. Dispose of this material in the same manner de-
scribed as the chemical that built up in the hose. Using the
personal safety equipment needed (see the Personal
Safety Equipment portion of the “Important Safety Infor-
mation” section on page
4.) rinse bottom of gauge pro-
tector (#1) in the same manner by disposing of the
chemical as stated by the chemical manufacturer.
General Information
If equipment is to be used in freezing or near freezing con-
ditions, protect pump and plumbing system by thoroughly
draining liquid and pumping antifreeze (Great Plains
strongly recommends the use of recreational vehicle anti-
freeze) solution through the plumbing system.
The cast iron pump must be either full of RV antifreeze or
completely empty of all liquid to avoid corrosion. If the con-
tents of the pump is unclear it is advisable to drain the
pump, remove it, and place it in a warm dry, environment
during the winter.
Check the condition of the sprayer hoses and clamps. Fix
all leaks by tightening hose clamps or fittings. If the pump
is leaking, refer to the pump maintenance section. If the
hoses are dragging when the sprayer is operated use ca-
ble ties to fix their position. Make sure the hoses do not
bind or kink when the boom is folded or raised. If so, route
the hoses to prevent kinking and binding. If hoses are
damaged, replace as necessary. Periodically check for
loose bolts and tighten.
Inspect all parts of the sprayer for wear and rust. Repair
and paint parts as necessary.
Pump Maintenance & Repair
This Great Plains pump is designed for long life and ser-
vice. Through the years there may be a need to replace
the mechanical seal or service some component of the
pump. A mechanical seal may weep slightly, but if it starts
to drip the pump will have to be disassembled. Before dis-
assembling the pump be sure to wash it out with fresh wa-
ter.
The following is an instruction list for how to reassemble
the pump after it has been disassembled and repaired.
Refer to the parts manual for the components of the pump.
Magnet-mount Gauge Protector
Figure 5-1
15775
Section 5
Maintenance and Lubrication