Irrigation System Maintenance Checklist: Essential Tasks for Every Farmer

A well-maintained irrigation system operates efficiently, lasts longer, and rarely breaks down during critical watering periods. Neglected systems waste water, increase energy costs, and fail at the worst possible times.

Here's your complete irrigation maintenance checklist organized by season.

Pre-Season Startup Checklist

Before the first irrigation of the season, complete these essential tasks.

Control Panel and Electrical

• • [ ] Inspect control panel for rodent damage, moisture, or corrosion
• • [ ] Check all electrical connections for tightness
• • [ ] Test start/stop functions before connecting to pivot
• • [ ] Verify safety shutdowns work properly
• • [ ] Check pressure and flow sensors
• • [ ] Update control software if applicable
• • [ ] Test remote monitoring/control systems

Warning signs: Burned or corroded contacts, unusual sounds, error codes that persist.

Pivot Point and Center

• • [ ] Grease pivot point bearing
• • [ ] Check collector ring and brushes
• • [ ] Inspect pivot pipe for leaks or damage
• • [ ] Verify pivot anchor bolts are tight
• • [ ] Clean debris from pivot area
• • [ ] Check guy wires (if equipped)

Warning signs: Grinding sounds, visible rust, water leaking at pivot point.

Spans and Structure

• • [ ] Walk the entire pivot checking for winter damage
• • [ ] Look for bent or damaged truss rods
• • [ ] Check span alignment and tower spacing
• • [ ] Inspect all bolted connections
• • [ ] Verify cable guides and supports
• • [ ] Look for corrosion, especially on welds

Warning signs: Sagging spans, loose truss rods, significant rust.

Drive Units and Wheels

• • [ ] Check tire pressure (all tires should match)
• • [ ] Inspect tires for cracks, dry rot, or damage
• • [ ] Check wheel lug bolts for tightness
• • [ ] Inspect drive shaft U-joints
• • [ ] Verify gearboxes have proper oil level
• • [ ] Look for oil leaks at seals
• • [ ] Test each drive unit individually if possible

Warning signs: Low or contaminated gear oil, grinding sounds, uneven tire wear.

Sprinkler Package

• • [ ] Remove and inspect each sprinkler head
• • [ ] Clean or replace clogged nozzles
• • [ ] Check pressure regulators are functioning
• • [ ] Verify drop hoses are intact
• • [ ] Replace worn or damaged sprinklers
• • [ ] Check end gun operation
• • [ ] Verify booster pump (if equipped)

Warning signs: Uneven spray patterns, pressure variations, visible damage.

Pump and Well

• • [ ] Check pump shaft alignment
• • [ ] Inspect pump packing or mechanical seal
• • [ ] Verify priming capability
• • [ ] Check pump bowls (vertical turbine)
• • [ ] Test pressure and flow output
• • [ ] Clean intake screens or foot valves
• • [ ] Check electrical amp draw against nameplate

Warning signs: Reduced flow, increased amp draw, vibration, unusual noise.

In-Season Monitoring

During the irrigation season, maintain vigilance with regular checks.

Weekly Tasks

Visual inspection (during operation):

• • Observe pivot for proper movement
• • Watch for unusual spray patterns
• • Listen for abnormal sounds
• • Check for leaks along spans
• • Verify end gun timing

System performance:

• • Record operating pressure
• • Note flow meter readings
• • Document energy consumption
• • Track pivot completion time

Monthly Tasks

Pressure checks:

• • Measure pressure at pivot point
• • Check pressure at end of system
• • Compare to baseline readings
• • Address any significant changes

Sprinkler evaluation:

• • Catch can test if uniformity seems off
• • Replace any plugged or malfunctioning heads
• • Check pressure regulators

Drive unit monitoring:

• • Listen for unusual sounds
• • Feel for excessive heat
• • Check for oil leaks
• • Monitor alignment

Problem Response

When you notice issues:

1. Reduced pressure: Check pump, filters, leaks, or aquifer issues 2. Uneven application: Inspect sprinklers, pressure regulators 3. Tracking problems: Check tire pressure, drive units, control panel 4. Increased energy use: Pump wear, system leaks, increased friction

Document everything: Keep logs of repairs, replacements, and observations.

End-of-Season Winterization

Proper winterization prevents freeze damage and prepares for reliable spring startup.

Timing

Winterize before first hard freeze:

• • Drain all water from system
• • Complete before temperatures drop below 28°F
• • Don't rush—incomplete drainage causes expensive damage

Drainage Procedure

Pivot system:

• • [ ] Open all drain plugs along spans
• • [ ] Remove sprinkler heads or install drain devices
• • [ ] Drain pivot pipe and collector ring area
• • [ ] Allow complete drainage before closing

Pump and pipeline:

• • [ ] Drain pump column (vertical turbine)
• • [ ] Drain above-ground piping
• • [ ] Blow out underground lines if needed
• • [ ] Drain pressure tanks and filters

Control panel:

• • [ ] Turn off power at main disconnect
• • [ ] Protect panel from moisture and rodents
• • [ ] Consider removing and storing sensitive electronics

Post-Season Maintenance

Best done in fall while weather is good:

• • Repair any damage noted during season
• • Replace worn sprinklers
• • Grease all fittings thoroughly
• • Touch up paint on rust spots
• • Service or replace gear oil
• • Align any bent components

Storage Considerations

Position for winter:

• • Park pivot in convenient location for spring
• • Consider wind exposure
• • Keep away from livestock
• • Secure control panel

Security:

• • Lock control panels
• • Consider GPS tracking devices
• • Document serial numbers and photograph system

Critical Components Deep Dive

Sprinkler Package Maintenance

Nozzle wear affects uniformity and efficiency:

• • Replace nozzles when worn 10%+ from original size
• • Typical replacement: Every 3-5 seasons
• • High-sediment water accelerates wear

Pressure regulators:

• • Test annually for proper operation
• • Replace if holding pressure varies
• • Common failure point after 5-7 years

Drop hoses and fittings:

• • UV degradation causes failures
• • Replace cracked or stiff hoses
• • Check clamp tightness

Gearbox and Drive Units

Oil maintenance:

• • Check level annually (spring)
• • Change oil every 3-5 years or per manufacturer
• • Use specified oil weight
• • Watch for contamination

Common failures:

• • Seal leaks from shaft wear
• • Gear wear from low oil
• • U-joint wear from misalignment

When to rebuild vs. replace:

• • Rebuild: Seal leak, minor gear wear
• • Replace: Major gear damage, severe shaft wear

Pump System

Impeller and bowl wear:

• • Efficiency drops 1-2% annually
• • Rebuild when efficiency drops 10-15%
• • Test regularly with flow meter

Motor maintenance:

• • Keep motors clean and dry
• • Check amp draw versus nameplate
• • Listen for bearing noise
• • Protect from flooding

VFD/Soft start care:

• • Keep cooling fans clean
• • Protect from dust and moisture
• • Update firmware as recommended

Maintenance Schedule Summary

Daily (During Operation)

• • Quick visual check
• • Listen for unusual sounds
• • Note any performance changes

Weekly (During Season)

• • Walk pivot during operation
• • Check pressure and flow readings
• • Document observations

Monthly (During Season)

• • Detailed sprinkler inspection
• • Drive unit check
• • System performance review

Annually (Pre-Season)

• • Complete system inspection
• • Grease all fittings
• • Test all components
• • Address all repairs

Every 3-5 Years

• • Gearbox oil change
• • Major sprinkler replacement
• • Deep pump inspection
• • Control system updates

When to Call a Professional

Some tasks require professional expertise:

Always professional:

• • Electrical troubleshooting
• • Pump rebuilds
• • Gearbox rebuilds
• • Major structural repairs
• • Control panel reprogramming

Consider professional help for:

• • First-time startup issues
• • Unexplained performance drops
• • Complex troubleshooting
• • Warranty-covered repairs

FAQ

How often should I grease my pivot?

At minimum, annually during spring startup. High-use systems benefit from mid-season greasing. Use recommended grease type and don't over-grease.

What's the most common cause of pivot breakdowns?

Tire and wheel issues cause most field stops. Maintain proper tire pressure, check lug bolts, and address wear promptly.

How do I know if my pump is losing efficiency?

Compare current pressure and flow to original specs. A 10%+ drop indicates wear. Regular testing catches problems before they become failures.

Should I drain my pivot every winter?

Absolutely. Freeze damage is expensive and preventable. One undrained fitting can crack a span pipe. Take time to drain completely.

How long do sprinklers last?

Typically 5-10 years depending on water quality and use. Budget for ongoing replacement as part of operating costs.

Professional Maintenance Support

ProTech Irrigation Solutions offers comprehensive maintenance programs including seasonal startup, in-season support, and winterization services. Our technicians catch problems before they become failures.

Call (214) 264-4793 to schedule service or discuss a maintenance program.