Landscape Irrigation Troubleshooting

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Landscape Irrigation Troubleshooting
Kerry Harrison Extension Engineer -
Irrigation
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Common Questions/Complaints

• Ive got a geyser in my yard!!!!!!!!!!!
• Zone X wont come on (or go off).
• Time clock doesnt work.
• Ive got dry/wet spots (uneven distribution).
• Others?????

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Basic Definitions

• Application amount
• Application rate
• Application uniformity
• Application efficiency

Note It is common to confuse uniformity
efficiency
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• Troubleshooting Steps
• (AKA System Audit)
• Gather basic client information
• Gather system information
• Type, brand name, nozzle size, spacing
• clients perception of water amounts applied
• System condition
• Leaks, arc adjustment, not rotating

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• System operation
• Operating days, start time, zone operating time
• Compare actual information to clients perceptions
  (more on this point later)
• Determine if a uniformity test is needed

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• Conducting a
• Uniformity Analysis
• Determine collector spacing
• (based on sprinkler spacing)
• Set out collectors
• Start system (zone)
• Operate for a measured time
• Collect record data volumes
• Perform statistics
• (average, standard deviation, etc.)

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Common Problems/Solutions

• Sprinkler spacing (too far apart)
• Sprinkler amounts applied are very light
• Applications are too frequent (odd/even)
• Spray amounts are too much
• Operating time per zone remains constant
• Same size nozzle in full/part circle sprinklers
• on the same zone valve
• Reprogramming timeclock solves many of
• these problems

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Questions/Comments/Suggestions??????