12 steps to fine-tuning your sprayer
The foundations for getting through the sprayer NCT are really laid on the final day of operation during the last season. Here's Neil Butterly's 12-step guide to keeping your sprayer fit for any test.
1 On the last day of spraying in any year, everything should be rinsed out really well using an ammonia-based product such as All Clear Extra.
This is required to remove all traces of hormone-type sprays that could contaminate subsequent mixes.
Every part of the sprayer, including the induction bowl, pictured, should be immaculate when you are finished.
2 Drop off every nozzle into a bucket of hot water. Give them a good wash, paying particular attention to o-rings to make sure that they aren't perished. A little bit of grease on each of these also helps prevent the rubber from corroding, which can lead to air suction.
3 Take out all your filters and clean. This includes the filters in the nozzles, the high-pressure filter, the suction filter, and the in-line filters along the boom.
4 Pump antifreeze through all the lines to protect the machine from frost.
5 If it has any computer boxes, take them out and put them in a warm, dry place. The same goes for pressure gauges, or wrap them in a rag to protect them from the cold.