An edge nozzle (B) can be fitted to the end of the spray boom in order to prevent the last spray nozzle from spraying directly into the ditch. Edge nozzles can therefore contribute to reducing discharge into surface waters. The edge nozzle is fitted 20 cm from the last spray nozzle (A) for effective distribution and a full spraying width. The edge nozzle must be closed while spraying in the field. When spraying along the ditch (or field edge), close the last spray nozzle and open the edge nozzle. Edge nozzles can be fitted on one side (when always driving in the same direction) or on both sides.

Edge nozzles are stainless steel eccentric nozzles of the type TEEJET ® AIUB with a spray angle of 85°

There are two versions:

• Manually operated set of edge nozzles
• Electrically operated set of edge nozzles for revolving nozzle holders

TEEJET is a trademark of Spraying System Co.

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On the manually operated set of edge nozzles (A), the edge nozzle is a revolving nozzle to which two bayonet caps are fitted. One bayonet cap (orange) is filled with the edge nozzle, the other bayonet cap (black) has a blind tip. If the edge nozzle needs to be turned on, the last nozzle should be closed. If the machine has revolving nozzle holders, this can be done simply by turning the last nozzle holder to a blind position. On machines with single nozzle holders however, the bayonet cap must be removed and placed (temporarily) on the revolving nozzle holder of the edge nozzle. The black bayonet cap with blind tip can then be placed on the last nozzle holder in order to close it off.

A-Manually operated set of edge nozzles

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On electrically operated sets of edge nozzles (A), both the edge nozzle and the last spray nozzle (B) can be closed electrically. This allows for full operation (opening of the edge nozzle and closure of the last spray nozzle or vice versa) from the cab using the three position switch 24 on the EHC-2 control box (left - center - right). The symbol for the edge nozzle is given to the left and right of this switch on the operating panel.

If the switch is in the centre position, the edge nozzle(s) is/are closed and the last spray nozzle(s) is/are open. This is the normal position during spraying.

If the switch is in the left position, the left-hand edge nozzle is open and the last spray nozzle on the left is closed. This is the position during spraying along surface waters or along a field edge, using the left-hand side of the spray boom.

If the switch is in the right position, the right-hand edge nozzle is open and the last spray nozzle on the right is closed. This is the position during spraying along surface waters or along a field edge, using the right-hand side of the spray boom.

A-Electrically operated set of edge nozzles
B-Last spray nozzle

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