Great-plains TSF1260 Predelivery Manual User Manual download pdf (Page 15)

Preparation and Setup 13

11/09/2006 500-642Q

Ace Pump Flow Limiter

Refer to Figure 11

The ﬂow limiter is a hydraulic device designed to shut

off the ﬂow of hydraulic oil when a speciﬁed ﬂow rate is

exceeded. On tractors with LOAD SENSING (LS)

Closed Center hydraulic systems, this device limits the

ﬂow of oil to the Ace motor and prevents failures.

Newer Case-IH, John Deere, New Holland, and CAT

tractors have a great potential to run motors beyond

their rated speeds. Flows out of the hydraulic valves

can exceed 20 GPM while the motors are rated at 4-11

GPM. The ﬂow limiter protects the Ace motor by shut-

ting off on excess hydraulic ﬂow.

The ﬂow limiter should not be used on OPEN center or

PRESSURE COMPENSATING Closed Center hydrau-

lic systems. The ﬂow limiter should not be used with a

restrictor oriﬁce.

To Install Pump Flow Limiter

1. Install the ﬂow limiter in the inlet port of the Ace

motor.

2. Connect the hydraulic hoses so that the pump runs

with the hydraulic lever in the “Lower/Retract” posi-

tion. Connect return hose to Low Pressure Return

Port, when available.

3. Shut off boom and agitation valves on the sprayer to

deadhead the sprayer pump ﬂow.

4. Adjust the ﬂow control on the tractor to minimum

ﬂow setting (turtle).

5. Move the hydraulic lever to the “Lower/Retract”

position.

Note: Always shut the pump off in the “Float” position.

This eliminates high pressure being trapped in

the return line and protects hydraulic seals. Avoid

returning the oil to the remote valve; use the Low

Pressure Return Port, when available.

6. Adjust the ﬂow control on the tractor until the

sprayer system deadhead pressure is within the

pump’s operating parameters:

Note: If the ﬂow limiter stops the ﬂow of oil to the motor

a. Move the hydraulic lever to the “Neutral” posi-

tion. This removes the oil pressure from the ﬂow

limiter and allows it to reset.

b. Adjust the ﬂow control to a lower ﬂow position.

c. Repeat steps 5 and 6.

7. Set sprayer pressure by opening the agitation valve.

PTO Driven Pumps

a. Open up the sprayer control valve to its maxi-

mum setting. (On the Front Fold Boom Sprayer

monitor, with the power switch on, the rate

switch must be placed in the manual position,

and the increase/decrease switch must be

pushed to increase for 10-12 seconds.)

b. Start the tractor and engage the PTO pump

slowly with the tractor engine idling. Once the

system builds pressure on the pressure gauge,

shut off the boom section switched and close

the agitation valve.

c. The pump is now at deadhead pressure.

Increase the engine RPM’s until the spray pres-

sure reaches 80 P.S.I. maximum on the pres-

sure gauge or the PTO speed reaches the rated

RPM (540/1000). Never exceed the rated trac-

tor PTO RPM. This is the RPM needed to spray

at to prevent excess pressure on the sprayer’s

plumbing.

8. The sprayer is now ready to be calibrated. Refer to

the Operator’s Manual or Front Fold Boom Sprayer

Manual for checking calibration depending on the

control system.

Figure 11

Ace Pump Flow Limiter

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