Morris C2 Contour, Operator'S Manual

Page: 46 / 92

Operation
5-16 August 2014 C2 Contour Air Drill
Quick Tips
Note: Read the Operator’s Manual for detailed
operating and adjustment instructions.
Shank Trip Force
Shank trip force (lbs) is calculated by dividing the display
pressure by 1.5 (ex. 750 psi display pressure = 500 lbs
shank trip force). Shank trip out pressure is generally
set at the minimum pressure that keeps the shanks
solid in the vertical position and prevents them from
repeatedly “tripping out”, while still providing adequate
packing. Maximum recommended shank trip out
pressure is 1200 psi.
Packing Force
Packing force is proportional to shank trip out force
and is roughly 1/3 of the shank trip force (ex. 500 lbs
shank trip force would give approximately 167 lbs of
packing force).
Hydraulic System
The Contour Air Drill uses a passive hydraulic system
(no constant flow is needed from the tractor during
seeding). Maximum operating pressure is set using
the reducing valve on the frame (see “Setting Maximum
System Pressure”). Pressure can be changed on the
go to adjust for variable field conditions by using the
tractor remote (see “Pressure Adjustment”). If full range
adjustment of pressure is desired, the reducing valve
can be set at its maximum pressure and the operator
can then adjust pressure manually by watching the
pressure display and opener shanks.
Note: It is normal for the pressure to drop 100 to
150 psi from the initial set point while the
accumulator cools (the reducing valve can be
set higher to account for this initial pressure
drop). If the pressure continues to drop
quickly, check the machine for a cylinder,
fitting, or hydraulic line leak.
Lifting and Lowering the Openers
The openers do not need to be completely cycled from
working to fully lifted position while turning. Openers
can be lifted just to the point that they do not contact
the ground while turning, in order to save time by not
having to fully recharge the hydraulic accumulator with
fluid each cycle (the display pressure won’t drop all the
way to zero). When transporting the drill, lift the openers
and ensure that the display pressure goes down to zero.
PRESSURE
GAUGE
Valve Locations
OPERATING
VALVE
PRESSURE
ADJUSTMENT
OPENERS
BALL VALVE