YP4025A-48TR20
Operating Instructions
55
2019-03-19
411-198M
Implement Name Tank Fertilizer System Elements
Liquid fertilizer system callouts are consistent across
this entire manual. No single system includes all
elements.
Tank lids are vented and may be kept tight. Some lids
have a removable center section for easier hose fill.
On-board tanks are 200 gallons (750 liters) each. A
sight gauge at front shows current fill level against a
scale.
These valves are normally left open, unless the material
is different on each side.
These plugs are only removed for unusual
maintenance.
This 2 inch fitting secures either the plug or the fitting of
an external hose using cam locks. Always close the
valve
before removing the plug.
This valve is opened for filling tanks from a pressurized
supply source. It might also be opened for gravity
off-load. It is closed during all other operations.
The centrifugal pump is powered by a hydraulic motor
controlled by a proportional valve (not shown). The
valve is controlled by the seed monitor.
The pump normally operates at a flow rate higher than
required for the booms. The pump output is split into a
boom
a
flow, and a recirculation
/bleed flow.
This small line provides pump priming and recirculation
of excess material afield.
Remove this plug to drain or flush the bleed line or
pump.
This valve is normally open. It may be closed for
reduced bypass at very high application rates.
Recirculation Lines to Tank(s)
These lines provide pump priming at startup, and
recirculation of excess material afield.
These valves are normally open. They might be closed
for maintenance.
This valve protects the system from damage in the
event of overpressure due to blockage or valve
misconfiguration. Above approximately 65 psi, excess
material is returned to both the pump and the tanks.
This gauge reports operating pressure to the boom,
typically in the 15 to 45 psi range. Normally the gauge
is only relied on for setting the relief valve
.
This line returns the majority of any overpressure
excess material to the tanks.
This valve sets the boom flow side of the pump outlet to
boom, off or off-load. A decal on the mount indicates
handle positions.
Offload Quick-Coupler and Plug
This outlet is normally closed. A supply tank 2 inch
hose may be connected for using the implement name
pump to return material to an off-implement name tank.
A filter element in the canister traps large particles that
might clog boom orifice plates. See the Seed Rate
manual for maintenance and alternate element screen
sizes.
This fitting measures material flow to the boom.
Readings from this sensor are used by the seed
monitor to adjust the pump rate.
This valve is normally open. It might be closed for
maintenance.
There are separate boom sections for the implement
name center section and each wing.
There are separate boom sections for the implement
name center section and each wing.
Boom taps are provided for at least the number of rows
present.
The standard fitting on an active row is a nozzle body
that accepts various size orifice plates.
The orifice plate
sits inside this rubber seal.
These stainless steel plates have precisely sized center
holes that provide flow resistance for optimum boom
pressure. They do not regulate flow rate, but must be
sized to the flow rate. Standard booms include sizes 24,
34 and 48.
These optional nozzles are an alternative to changing
orifice plates. They are spring loaded to maintain a
constant back-pressure over a wide range of rates.
Any unused boom clamps are provisioned with caps
instead of nozzles. Caps may also be used to shut off
rows when changing row spacing.
a. Boom flow may instead be off-load flow for recovery of unused material. The recirculation circuit includes a Relief Valve
which
sends excess material back to the tanks in the event of blockage or valve misconfiguration.
