Flow Control Valve Troubleshooting

By: Mark Rohret, ECS & Flow Control Sales

It’s always frustrating when you are ready to roll but your flow control valve technology is not. The most common issues with flow control systems seem to be incorrect rates on the Raven SCS 660 and issues with the hydraulic cylinder moving correctly. Often times, these can be corrected with basic setting changes and fuse replacement.

Incorrect rate appearing on the Raven SCS 660

The Raven SCS 660 console provides an actual rate by taking width, speed and volume flow and computing it into volume per acre. Any time you lose one of these inputs you will lose your rate. Check to make sure the speed is reading correctly on the Raven SCS 660 by comparing it to the speed on the tractor. Volume flow (volume/minute) can be a common factor of the rate reading wrong. Check and make sure the volume/minute is a realistic number. If this isn’t realistic, there is most likely a wrong setting that needs to be fixed.

Hydraulic cylinder not moving correctly

Check to see if the cylinder will move by placing it in manual with constant flow to the hydraulics and toggling between increase and decrease. When testing it in manual, visually look and see if the cylinder is extending (increasing) or retracting (decreasing). If nothing appears to happen check the 2 fuses in the cylinder system located on the large red wire in the cab as well as the grey boost box on the front of the tank

The majority of problems with flow control valve systems stem from dirty connections on the wiring harnesses. Before the season hits, clean connections with an electronic cleaner and use di-electric grease to ensure a good connection. Also, be sure the locking collar is completely locked; this will cause a problem if the connection does not stay tight.

If you still have problems with your flow control valves after these steps, call Mark Rohret at 319.325.4369, Ryan Miller at 319.325.4379 or Jake Delay at 319.325.0913.