User Manual

SEEDHAWK®TOOLBAROPERATOR’SMANUAL48
5.0 LIQUID  SYSTEM  OPERATION

5.1 SYSTEMFLOWDESCRIPTION

Themeteringpump,grounddrivenbythemeteringwheel,drawsliquidfertilizerfirstthrough
the flow valve, then the main filter. The liquid fertilizer is then pumped to the distribution
system.Agaugeindicatestheoperatingpressure.

SelecttheappropriateVRnozzletoadjusttheliquidfertilizerdeliverypressure.The
restriction
createdbytheorificesetstheamountofbackp ressurerequiredforevendistributionofliquid
fertilizertoeachopener.Too lowpressurewill result inpoorliquiddistributionandexcessive
pressurecandamagethepump,ho ses,fittingsand/ordrives.

NOTE:Operating pressure cannot be used as a means of system calibration as system
pressure has no direct correlation to the quantity of product applied.Even distribution of
liquidfertilizerrequiresthattheoperatingpressurebesetintherecommendedrange.

5.2 CHECKINGFERTIL IZER RUNS
Performthefollowingtesttoensurethateachfertilizerrunisfunctioningproperly:
1. Ensurethattankisatleastpartiallyfilledwitheitherwaterorliquidfertilizer.
2. Proceedforwardabout20‐30ft(6‐9m)runningliquidsystem.
3. Stoptractorandlookatgroundbehindeachopenertoensureliquidfertilizerisdischarged
behindeachrun.Seewww.spraytarget.comformoreinformation.
5.3 VARIABLERATELIQUIDCHART
NOTE: Above charts are for reference only, pressures may vary without affecting the
applicationrate.