Great Plains PT1230 AA1062 Operator Manual - Manual (Page 19)

17
Section 2 Planter Operation
PT1230 Pull-Type Folding Planter 401-069M-A 10/10/12
Great Plains Mfg., Inc.
!
WARNING!
Escaping fluid under pressure can penetrate the skin causing
serious injury. Avoid the hazard by relieving pressure before
disconnecting hydraulic lines. Use a piece of paper or card-
board, NOT BODY PARTS, to check for suspected leaks. Wear
protective gloves and safety glasses or goggles when working
with hydraulic systems. If an accident occurs, see a doctor im-
mediately. Any fluid injected into the skin must be surgically re-
moved within a few hours or gangrene may result.
IMPORTANT: JIC fittings do not require high torque.
JIC and O-Ring fittings do not require sealant. To
avoid possible danger of cracking hydraulic fittings
from over tightening, do not use plastic sealant tape.
Flow Control Raise/Lower
Figure 2-9
15029
General Notes
•
If both markers are required down at the same time run
one marker down, momentarily start to raise it, reverse
the hydraulic lever and lower the opposite marker. Hold-
ing the lever down then will force both markers down.
If the markers are down they can both be raised simul-
taneously but they can only be lowered one at a time al-
ternating from one side to the other.
•
When oil is cold, hydraulics operate slowly. Make sure
all adjustments are made with warm oil.
•
On a tractor where the oil flow cannot be controlled, the
rate of flow of oil from the tractor may be greater than the
rate at which the marker cylinder can accept it. The trac-
tor hydraulic control lever will have to be held until the
cylinder reaches the end of its stroke. This occurs most
often on tractors with an open center hydraulic system.
On tractors with a closed center hydraulic system, the
tractor’ s hydraulic flow control can be set so the tractor’s
detent will function properly.
Marker Transporting
!
DANGER!
Keep clear of overhead power lines when folding or unfolding
markers. See also Figure 2-6 on page 14.
Always transport markers folded in the flat fold position.
Liquid Fertilizer Attachment
!
DANGER!
Agricultural chemicals can be dangerous if not selected and
handled with care. Always read and follow directions supplied
by the chemical manufacturer.
Squeeze Pump
Specifications:
Maximum speed - 125 RPM
Maximum pressure - 5 PSI
Output per revolution
5/16 Diameter hose - 0.58 gpm
1/2 Diameter hose - 1.4 gpm
Pump Mounting and Hose Arrangement
The pump should always be mounted even with or lower
than the fertilizer tank and for accurate metering, the
speed should not exceed 125 RPM.