Oasis Ace MAX Series, Instruction Manual, Page: 7 / 20

7
REGULATING HYDRAULIC FLOW TO MOTOR
Warning: Failure to regulate oil flow may damage hydraulic motor.
There are three types of hydraulic systems: 1) Load Sensing (LS) also called Pressure-Flow
Compensating Closed Center, 2) Pressure Compensating Closed Center (PC), and 3) Open Center
(OPEN). Consult the Tractor Hydraulic System Pump Selection Guide(HSG), Internet Hydraulic
Selection Guide (IHSG) at www.AcePumps.com, or your tractor dealer to determine the type hydraulic
system on your tractor and the method of regulation.
PRESSURE COMPENSATING CLOSED CENTER SYSTEM
LOAD SENSING CLOSED CENTER SYSTEM
Regulate oil flow with tractor’s
FLOW CONTROL
. (Do not use restrictor orifice.)
Setup Instructions:
1.
Shut off sprayer boom and agitation valves.
2.
Adjust tractor flow control to minimum flow setting (turtle).
3.
Move hydraulic lever to “Lower/Retract” position to start pump.
4.
Adjust tractor flow control until sprayer shut-off pressure is 4 psi(0.3 bar) for 650
models or 20 psi(1.4 bar) for 750/855 models above desired spraying pressure.
Do not exceed maximum shown in
SHUT-OFF PRESSURE
section below.
5.
Open the sprayer agitation valve to set desired spraying pressure.
Flow Control
Regulate oil flow by using a
RESTRICTOR ORIFICE .
Setup Instructions:
1.
Install restrictor orifice for all 650 models. Insert the orifice with O-ring
inside the adapter/restrictor body in the motor inlet port.
Note:
Do not use restrictor for 750 and 855 pump models.
2.
Set “Rabbit/Turtle” flow control to “Turtle”.
3.
Move hydraulic lever to the “Lower/Retract” position to start pump.
4.
Adjust “Rabbit /Turtle” flow control and sprayer agitation valve to set
desired spraying pressure.
Insert Restrictor
Orifice
OPEN CENTER SYSTEM
The M Series motors are not equipped with a needle valve to bypass excess oil flow. The tractor
hydraulic flow must fall within the motor’s recommended flow range or an external bypass circuit
may be added. The tractor’s hydraulic system may limit pump performance if the oil flow is less
than the motor’s rated capacity.
Select motor size closest to tractor’s hydraulic system capacity.
Consult factory for application of pumps on these systems.
SHUT-OFF PRESSURE
Shut-off pressure is the sprayer system pressure with all liquid flow turned off. This means closing
the boom, agitation, and any by-pass valves. It is the highest pressure a centrifugal pump will
achieve for a given RPM and relates directly to the flow of hydraulic oil. A pressure gauge must
be located between the pump discharge and the shut off valves.
Pump Model Maximum Shutoff Pump Model Maximum Shutoff
FMC-650-HYD 160 psi (11 bar) FMC-750F-HYD 150 psi (10.3 bar)
FMC-650F-HYD 160 psi (11 bar) FMC-855F-HYD 150 psi (10.3 bar)
FMCWS-650F-HYD 160 psi (11 bar)