Liquid Channel Configuration; Spinner Channel Configuration; Product Application Mechanism - Dickey-John Control Point Operator's Manual

OPERATOR'S MANUAL
2/ SYSTEM DESCRIPTION

LIQUID CHANNEL CONFIGURATION

The liquid channel controls the application rate of prewetting or deicing
materials. When prewetting, the Control Point™ Console monitors a flowmeter
style feedback sensor. When deicing, either a flowmeter or pressure style
feedback can be used. Using feedback data, the pumping mechanism output
adjusts the target application rate by either regulating pump speed or flow
blocking.
Deicing systems use up to five boom inputs for applying material to more than
one lane at a time.

SPINNER CHANNEL CONFIGURATION

The spinner channel controls the spinner plate(s) speed with either a closed-
loop (precision) or an open-loop configuration. In the closed-loop configura-
tion, a tachometer style feedback sensor, mounted on the spinner assembly,
monitors spinner activity. Using the feedback data, the spinner mechanism
speed adjusts for the target setting by controlling the hydraulic valve position.
In open loop systems, the hydraulic valve position is relative to the WIDTH
ADJUST knob setting on the Control Point™ Switch Module.
The customer must determine the spread-width accuracy needed. DICKEY-
john Marketing and Product Service personnel are available with additional
information to help with this decision.
PRODUCT APPLICATION MECHANISMS
The granular and spinner channels use, in addition to feedback (shaft rotation)
sensors, either servo valve actuators or proportional valves to control the
product application and spinner speed. The liquid channel uses, in addition to
feedback sensors (flowmeter or pressure transducer), a liquid pump to control
product application. The liquid pump output is controlled by either a 12 volt
DC motor, servo valve actuator, or proportional valve.
CONTROL POINT™
11001-1100-199904 Revision A