Great Plains 3P300 Operator Manual - Manual (Page 11)

9
Section 1 Assembly and Setup
3P200 and 3P300 Three-Point Sprayer 500-103M 3/6/06
Great Plains Mfg., Inc.
Tractor/Great Plains
PTO Pump Hookup
1. Position the PTO pump on the tractor’s PTO shaft with
the coupler bolt removed on the splined end.
2. Push the coupler of the pump on to align with notch in
the tractor PTO shaft and install bolt.
3. Make sure there is adequate hose length to reach the
pump in raised and lowered position. Cut off excess
hose.
4. For a 540 RPM pump or a 1000 RPM 1 3/8 inch spline
pump, torque the 1/2 inch Grade 8 coupler bolts to 105
ft-lbs. For a 1000 RPM 1 3/4 inch spline PTO pump,
torque the 5/8 inch Grade 8 coupler bolt to 210 ft-lbs
and the other 1/2 inch Grade 8 coupler bolt to 105
ft-lbs.
5. Rotate the PTO shaft by hand to make sure the bolts
clear the PTO shielding.
6. Attach the torque bar chain to the drawbar securely.
7. Hook the tarp strap in such a way that the slack in the
chain is taken up slowly when the PTO is engaged so
the torque bar does not bang.
8. Tie up any loose hoses with cable ties to prevent hose
damage.
9. With water in the sprayer tank, and water in the pump,
engage the PTO shaft slowly with the tractor engine
idling. Once the system builds pressure, close the ag-
itation valve, shut off the boom section switches and
close throttling valves (if applicable). Sprayers with
automatic controllers do not have throttling valves.
The pump is now at dead head pressure. Adjust the
engine RPM so that the spray pressure reaches 80
PSI maximum on the nozzle pressure gage, or the
PTO speed reaches the rated RPM (540 or 1000),
whichever is first. Never exceed the rated tractor PTO
RPM. This is the RPM needed to spray to prevent ex-
cess pressure on the sprayer’s plumbing.
Tractor/Hydraulic Pump Hook Up
The hydraulic motor used on all liquid pumps is a 6 GPM
motor. If the tractor used on the sprayer does not have the
capabilities to adjust the remotes down to this flow, then a
Hydraulic Flow Divider Kit must be installed so that flow
can be controlled to prevent operating the pump at exces-
sive speeds. See an Great Plains dealer for more informa-
tion.
1. The pressure hose coming out of the tractor remotes
must be connected to the “A: port of the motor and the
return line connected to the “B” port. Before operating,
place a stop in the neutral position for the tractor hy-
draulics so that the hydraulic lever can only be moved
to the float and down positions. Refer to the tractor’s
operator’s manual or tractor dealer on information for
the neutral stop.
NOTE: DO NOT move the hydraulic lever into the neutral
position while the hydraulic pump is running. To do so may
cause damage to the hydraulic pump.
2. To determine the correct setting of the flow rate, start
out with the hydraulic flow control valve set at a mini-
mum flow for the pair of outlets that operate the
pump.
3. With water in the sprayer tank and in the pump, place
the hydraulic lever in the float position.
4. Open up the sprayer flow control valve to its maxi-
mum setting.
5. Start the tractor and engage the pump by placing the
hydraulic lever in the down (forward) position.
6. Once the system builds pressure, close the agitation
valve, shut off the boom section switches, and close
the throttling valves (if applicable).
7. The pump is now at dead head pressure and the hy-
draulic control valve must be adjusted so that the
spray pressure reaches 80 PSI maximum on the noz-
zle pressure gauge. This process should be done
with the tractor throttle set at normal operating speed.
Mark this setting on the hydraulic control valve for fu-
ture reference.
8. Open up the agitation valve and reset the throttling
valves (if applicable). Refer to Throttling Valve Adjust-
ment in the “Adjustments” section on page
16.
Tractor/PTO Ace Pump Hookup
1. 540 PTO Pump: Attach the pump to the tractor PTO
shaft by tightening the three screwdriver slotted set
screws and jam nuts. Make certain the set screws are
in line with the retaining groove on the tractor PTO
shaft.
1000 PTO Pump: Attach the pump to the tractor PTO
shaft. Make sure screwdriver slotted set screws are
aligned with retaining groove on tractor PTO shaft
BUT DO NOT TIGHTEN. Next, align the split in the
slit-ring locking collar with corresponding split in the
pump drive shaft. Securely tighten the 5/16” allen
head set screw in the locking collar, then tighten the
three slotted head set screws and jam nuts.
2. To keep the pump body from rotating with the tractor
PTO shaft, affix one end of a torque chain to the “cold
shut” shackle on the pump, and one end to the trac-
tor.
NOTE: Do not fasten the pump rigidly in position with the
Torque Chain. To do so will cause damage to the pump.
Fasten the pump so that the chain holds the pump and
that there can be slack in the chain.
Ace power take off mounted belt driven centrifugal pumps
may be swung to the bottom, top or either side of the trac-
tor PTO shaft in order to make it fit a particular tractor. The
pump will operate satisfactorily in all these positions.
IMPORTANT: Remember that the discharge port in
the volute should always be at the top (the 12 o’clock
or 3 o’clock position) to aid in priming.