FAST AG Solutions 973PT, Owner'S Manual

Page: 51 / 81

HYDRAULIC FLOW
HYDRAULIC FLOW 3PT Sprayer 973PT Page 51
HYDRAULIC FLOW
Regulating Hydraulic Flow to the
Pump
Locate your tractor model and follow the
appropriate setup instructions.
Always use the lowest flow setting that will
achieve adequate results. Higher flows
create heat in the hydraulic system.
WARNING: FAILURE TO REGULATE
OIL FLOW WILL CAUSE MOTOR
FAILURE.
WARNING: NOT SUITABLE FOR
PUMPING FLAMMABLE LIQUIDS.
Load Sensing Closed Center System
(LS Closed)
Regulate oil flow with the tractor’s FLOW
CONTROL and FLOW LIMITER. (Do not use
restrictor orifice.)
Figure 11: Flow Limiter
Figure 12: Flow Control
Setup Instructions:
1. (Optional) Remove adapter and
install flow limiter in motor inlet port
(marked I).
2. Close motor needle valve: loosen jam
nut, screw needle valve clockwise
until seated, and lock jam nut (factory
setting.)
3. Shut off toolbar boom and agitation
valves if equipped.
4. Adjust tractor flow control to minimum
flow setting (Turtle).
5. Move hydraulic lever to
“Lower/Retract” position to start
pump.
6. Adjust tractor flow control until the
toolbar shut-off (deadhead) pressure
is within the pump’s operating
parameters. Note : If the flow limiter
stops oil flow to the motor:
a. Move hydraulic lever to
“Float” or “Neutral” to remove
oil pressure from the flow
limiter.
b. Adjust tractor flow control to a
lower flow position.
7. Repeat steps 5 and 6.
8. Open the agitation valve(s).
Pressure Compensating Closed-
Center System (PC Closed)
Regulate oil flow by using a RESTRICTOR
ORIFICE. (Do not use flow limiter.)
Figure 13: Restrictor Orifice
Setup Instructions:
1. Install restrictor orifice by inserting
inside the adapter/restrictor body in
the motor inlet port (marked I).
2. Close motor needle valve: loosen jam
nut, screw needle valve clockwise
until seated, and lock jam nut (factory
setting.)
3. Set “Rabbit/Turtle” flow control to
“Turtle”.
4. Move hydraulic lever to the
“Lower/Retract” position to start
pump.