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396
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5477Y1 Sentinel Row Control Manual
©2022 SurePoint Ag Systems 27
4/29/2022
PumpRight Hydraulic Oil Flow Requirements
(Requirements for 4.0 CID Motor—standard SurePoint motor beginning in
2016
—
Earlier motor was 4.9 CID which uses 20% more oil)
Setting Tractor Hydraulic Remote Speed
PumpRight pumps require a constant hydraulic oil flow from
the tractor. The amount of oil needed varies with pump size
and speed. The chart at right shows the necessary oil flow for
each pump model at varying fertilizer flows.
Use this procedure to determine the correct setting on your
tractor hydraulic flow.
1.
Run the fertilizer system in the field at the maximum rate
and ground speed.
2.
Turn down the hydraulic flow slowly while watching the
pump flow (Volume / Minute).
3.
Observe when the Volume / Minute begins to drop.
4.
Turn the hydraulic flow back up slightly.
This setting will provide the Pump Right pump just enough oil
for your application rate.
If running with the bypass open (only recommended when 2
motors are operated in series) this process will minimize the
oil circulated in the bypass loop, leaving more oil flow for
other hydraulic functions.
The pump is rated at a maximum of 550 RPM. Spinning the
pump over 550 RPM may cause pump failure.
The system will spin the pump faster than that if precautions
are not taken to limit the speed. This could happen if the
strainer becomes plugged or blocked and the controller
attempts to speed the pump up to achieve the desired Rate.
It could also happen if a high pressure situation occurs that
opens the Pressure Relief Valve (PRV) and the pump speeds
up to try to achieve the Rate.
A way to limit the maximum pump speed is to set the High
PWM Limit just above what is needed for regular operation. If
the pump tries to speed up above that, check for blocked
strainer or other issue.
Model PR17
-
3 Diaphragms
Fertilizer Flow
(GPM)
Pump Speed
(RPM)
Hydraulic Oil
Flow (GPM)
5
137
2.4
10
275
4.8
15
412
7.1
17
467
8.1
Model PR30
-
3 Diaphragms
Fertilizer Flow
(GPM)
Pump Speed
(RPM)
Hydraulic Oil
Flow (GPM)
5
85
1.5
10
170
2.9
15
255
4.4
20
340
5.9
25
425
7.4
30
510
8.8
Model PR40
-
4 Diaphragms
Fertilizer Flow
(GPM)
Pump Speed
(RPM)
Hydraulic Oil
Flow (GPM)
10
115
2.0
20
229
4.0
30
344
6.0
40
458
7.9
Model D250
-
6 Diaphragms
Fertilizer Flow
(GPM)
Pump Speed
(RPM)
Hydraulic Oil
Flow (GPM)
10
86
1.6
20
172
3.2
30
258
4.8
40
343
6.4
50
429
8.0
55
472
8.6
Model PR80
-
4 Diaphragms
10
57
1.0
20
114
2.0
30
170
2.9
40
227
3.9
50
284
4.9
60
340
5.9
70
397
6.9
80
454
7.9
SurePoint
Ag
Systems