Great Plains NTA2007HD Operator Manual - Manual (Page 60)

56 Great Plains Manufacturing, Inc. Contents Index NTA607/2007HD
166-283M Contents Index 04/04/2011
Fan Operation
Fan Safety Information
Rotating Fan Blade Hazard:
Do not operate fan with guard screen removed. Fan acceler-
ates instantly and with high torque. Body parts and clothing
can be drawn into fan, resulting in death or serious injury.
Disconnect fan circuit at hitch when working on fan.
High Pressure Fluid Hazard, Fan Hydraulic Motor:
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin causing serious injury. Use a piece of paper
or cardboard, NOT BODY PARTS, to check for leaks. Wear
protective gloves and safety glasses or goggles when working
with hydraulic systems. If an accident occurs, seek immediate
medical assistance from a physician familiar with this type of
injury.
Machine Damage Risk: Protect Motor Seals:
Fan circuit has three hoses. All must be correctly connected.
Make sure that “SUMP” line is connected to a tractor port
capable of accepting high volume low pressure return oil.
Connect Case Drain line to a low volume case drain return.
Avoid sudden circuit changes. Motor seals may be damaged by
rapid starts and stops, or by circuit reversals. Engage fan cir-
cuit lever slowly, while observing fan rpm on seed monitor.
Dust, Noise and Startle Risks:
Avoid unexpected fan operation. Set fan shut-off valve to OFF
(drill fold) when no fan operations are intended. Set valve to
ON before activating fan hydraulic circuit. If fan does not start
when slowly moving fan/fold circuit lever, set lever to Float or
Neutral and check shutoff valve.
Note: Avoid fan direction reversal. A fan running in re-
verse cannot generate sufficient airflow for plant-
ing. If fan cannot reach target rpm, check for
reversed circuit connections or improper drain con-
nection.