Pre-Season Maintenance Checklist for Anhydrous Applicators

1. Frame and Toolbar Inspection

Start with the foundation of your toolbar.

• Check for cracks, weld fatigue, or bent frame sections.

• Tighten bolts, clamps, and mounting hardware.

• Grease all pivot points and moving joints.

• Inspect lift cylinders, pins, and hinges for wear.

2. NH₃ Delivery System

Your NH₃ system is the heart of your toolbar—make sure it’s leak-free and compliant.

• Inspect hoses for weathering, cracking, or soft spots.

• Verify hose manufacturing dates; replace any older than 5 years.

• Check breakaway couplers, valves, and manifolds for leaks.

• Replace worn seals and gaskets.

• Make sure knives and tubes are unobstructed and corrosion-free.

3. Metering and Distribution

Uniform distribution is key to accurate nutrient application.

• Inspect and clean the cooler, vapor lines, and flow meters.

• Ensure manifolds are balanced and outlets are clear.

• Check orifices for plugging.

• Calibrate your rate controller before heading to the field.

4. Row Units and Knives

Even, consistent placement starts at the row unit.

• Check shanks, knives, and mounting brackets for cracks or wear.

• Inspect depth settings and gauge wheels for uniformity.

• Replace worn seals, bushings, or springs.

5. Electrical and Control Systems

Reliable control means reliable application.

• Inspect wiring for corrosion or rodent damage.

• Test rate controllers, valves, and sensors.

• Confirm monitor displays and cables function correctly.

• Update software or firmware if needed.

6. Safety Equipment

Safety comes first with NH₃.

• Check that breakaway cables and emergency shutoff valves operate properly.

• Make sure safety decals and NH₃ warning signs are visible.

• Inspect personal protective equipment—gloves, goggles, and water bottles.

• Ensure the safety water tank is clean and full.

7. Tires, Hydraulics, and Transport

Safe transport keeps you moving from field to field.

• Inspect tires for pressure, tread, and sidewall damage.

• Check hydraulic hoses for leaks or wear.

• Test lift, fold, and transport functions before the first trip.

8. Documentation and Final Steps

Keeping good records helps with compliance and resale value.

• Record all maintenance, repairs, and replacements.

• Note hose replacement dates.

• Keep a log of calibration settings and rate controller data.