Great Plains YP1625 Operator Manual - Manual (Page 47)

Great Plains Manufacturing, Inc. Adjustments 43
07/09/2009 401-226M
Setting Fertilizer Rate
DANGER
!
Some chemicals will cause serious burns, lung damage, and
death. Avoid contact with skin or eyes. Wear proper protective
equipment as required by chemical manufacturer. Avoid pro-
longed breathing of chemical fumes. Wear respirator as
required by chemical manufacturer. Seek medical assistance
immediately if accident occurs. Know what to do in case of an
accident.
Fertilizer rate is controlled by two factors:
1. Pump rate, and
2. Orifice size at the row unit drop-line points.
Pump rate depends on sprocket setting (and pump drive
type).
Consistent system operation also requires a correctly
adjust relief valve and a well-maintained strainer ahead
of the pump. See “Setting Relief Valve” on page 63 and
“Strainer” on page 63.
Hypro Pump
The liquid fertilizer option uses a Hypro medium pres-
sure pump. For pump operation and pump maintenance
refer to the Hypro manual. The Hypro manual is supplied
in the liquid fertilizer option package.
On new and upgraded planters, the pump is driven by a
ground contact wheel, and fertilizer rate is independent
of seed rate. Fertilizer rate is set by sprockets on the
ground drive assembly. See “Ground Drive Pump” on
page 44.
Note: Great Plains recommends checking with your local
Agronomist as soil conditions vary. Soil conditions
in your area may need lesser or more amounts of
fertilizer than represented in these charts. Do not
exceed 12 gallons per acre in any case.
Note: Always remove pump drive chain when not in use.
Do not operate planter pump when not applying
material.