Great Plains PFC2000 Operator Manual - Manual (Page 33)

Operating Instructions 31
03/28/2007 407-158M
Planting
When all checklist items are complete, tank operation
during a planting pass normally is automatic and
requires no operator intervention to control pumps.
Lowering and raising the planter automatically
engages and disengages the ground drive pumps on
the planter.
Lowering and raising the planter operates a height
switch on the planter that signals the seed monitor to
engage and disengage the pump clutch on the cart.
All pumps stop when planter motion stops.
The cart pump (only) may be disengaged under the
control of the seed monitor, either by CFM switches, or
commanding channels off.
See “Field Pumping” on page 23 for details on using
various tank configurations.
Planting at speeds recommended for the seed also
results in reliable pumping rates.
When reloading seed, check fertilizer consumption
against anticipated use to that point.
Electric Clutch Operation
The PFC1600/2000 Cart has a clutch in the pump
drive system. In normal operation, the planter’s seed
monitor system controls the clutch. When the planter is
lowered for planting, the clutch is engaged.
Refer to Figure 15
The “Fert.Pump” switch on the cab Clutch Folding
Module (CFM) can independently disable the cart
clutch.
Note: This does not shut off any wing-mounted ground
drive pumps (which have no clutches). To disable
one or both ground drive pumps, remove a
sprocket or tie-up the drive wheel arm. Do not
merely close valves.
In the normal (up) position, the clutch is controlled by
the seed monitor. The LED above the switch is on only
when the switch is up AND the seed monitor has
engaged the pump clutch.
In the off (down) position, the clutch is off at all times.
There is no standard provision to force the clutch on
when the seed monitor would have it off. There is a
mechanical lock-up capability at the clutch housing,
described in the following section.
Figure 14
Planting
26154
Figure 15
CFM: Clutch Switch
26119
1
1