Relieving Boom Pressure

IMPORTANT: Use of the Boom Pressure Relief function is not recommended when using non-John Deere after-market solution system equipment. These include but are not limited to, direct injection and section ON/OFF control systems. Use of the Boom Pressure Relief function with non-John Deere solution systems may have undesired effects.

The Boom Pressure Relief function allows the pressure trapped in the boom to be bled off after spraying is complete. The pressure is bled off by allowing the boom sections valves to be opened for approximately 3 seconds after the solution pump and remote load are shut off, the operator raises the boom center frame to its highest position, the solution pressure is 4 psi or less, and the engine is running. The operator must press the Master Spray ON/OFF button to activate the function once the above conditions are met. After the 3-second period, the boom section valves will close. The main purpose of this function is to minimize the possibility of the sprayer nozzle bodies leaking while in transit.

2. If not already in the OFF position, set all Remote Switches to the OFF position.

3. If not already in the up most position, raise boom center frame to its up most position. Boom can be folded or unfolded.

4. Press Master Spray ON/OFF, after pressing Master Spray, the operator should hear and audible alarm and see the message "RELIEVING BOOM PRESSURE" displayed in the G section of the GSD.

5. Repeat step four as necessary; this can be done as long as the conditions in steps one through three are met.

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NOTE: Engine must be running to activate Boom Pressure Relief function. If alarm does not sound and no message appears, wait five seconds and press Master Spray ON/OFF again. Solution Pressure must be below 4 PSI before Boom Pressure Relief operation will be allowed

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