Hydraulic pump hook up – Great Plains 3P300 Operator Manual User Manual
Page 19
Great Plains Manufacturing, Inc.
Preparation and Setup
15
09/14/2009
500-103M-A
Hydraulic Pump Hook Up
The hydraulic motor used on all liquid pumps is a 6 gpm
(23 liter/min.) 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 excessive speeds. See an Great
Plains dealer for more information.
The pressure hose coming out of the tractor remotes
must be connected to the motor inlet port (“I” on cur-
rent pumps; “A” on older pumps), and the return line
connected to the motor outlet (“O” on current pumps,
“B” on older pumps).
2.
Before operating, place a stop in the Neutral position
for the tractor hydraulics so that the hydraulic lever
can only be moved to the float and forward/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.
3.
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.
4.
With water in the sprayer tank and in the pump, place
the hydraulic lever in the float position.
5.
Open up the sprayer flow control valve to its maxi-
mum setting.
6.
Start the tractor and engage the pump by placing the
hydraulic lever in the down (forward) position.
7.
Once the system builds pressure, close the agitation
valve, shut off the boom section switches, and close
the throttling valves (if applicable).
8.
The pump is now at dead head pressure and the
hydraulic control valve must be adjusted so that the
spray pressure reaches 80 PSI maximum on the
nozzle 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 future reference.
9.
Open up the agitation valve and reset the throttling
valves (if applicable). See “Pressure Adjustments”
on page 41.
Figure 5
Ace Pump Connections
27141