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2 filter & pressure reducing valve, 3 remote calibration, 1 viper pro™ hydraulic drive calibration – Seed Hawk AIRCART 2014 User Manual

Page 39

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SEED HAWK

®

2014 AIRCART OPERATOR’S MANUAL

SEED HAWK

®

2014 AIRCART OPERATOR’S MANUAL

70

8.2 Filter & Pressure Reducing Valve

This hydraulic oil filter and reducing valve are placed in-line with the hydraulic 
motors. Both are located at the front of the aircart near the auger/conveyor
diverter valve.

The PRV is mounted directly following the oil filter.  This PRV is used to lower 
the hydraulic pressure entering the motors to 1500 psi. To adjust the PRV loos-
en the nut at the top of the PRV. Then using an allen key, adjust the screw until
the gauge reads 1500 psi. Tighten the nut at the top of the PRV.

8.2.1 Hydraulic Oil Filter

8.2.2 Pressure Reducing Valve (PRV)

The filter is equipped with a blockage indicator which displays a red band when 
a pressure differential greater than 5 bar (72.5 psi) occurs. Note that low oil
temperatures may give false blockage indication. To reset the blockage indica-
tor press the plastic cover at the top of the indicator.  The filter cartridge (Part 
Number: 317885) should be replaced after the first 50 hours of operation, then 
yearly or when the blockage indicator displays a the red band too frequently.

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8.3 Remote Calibration

8.3.1 Viper Pro™ Hydraulic Drive Calibration

ATTENTION! Exit to the Seed Hawk Viper Pro™ Main Menu on the Viper
monitor before powering up the Remote Calibration Console.