Design Guide

Preventative
Maintenance
System Inspection
Physical inspections are necessary in the following circumstances:
■ At the beginning of each irrigation season
■ After any landscape planting operation or renovation
■ For subsurface dripline installations, after any maintenance
function requiring digging at or below the dripline depth
Physically inspect system components (remote control valves, filters,
automatic flush caps and flush-end pressure checks) on a routine basis
as determined by historical experience.
Base zone-flow readings, supply manifold pressures and flush-end
pressure readings should be recorded with all system components
operating at their optimum capacity. Baseline readings after
installation should be determined during the final system inspection
upon initial startup. However, they can be determined at any time as
long as all system components are operating properly. Record this data
on the System Data Record below as a permanent reference record.
System Data Record
■ Station Number: ______
■ Dripline Model Number: ___________________
■ Emitter Spacing: _______ inches
■ Emitter Flow:_______ GPH
■ Dripline Spacing: ________ inches
■ Initial Supply Manifold Pressure: __________ PSI
■ Initial Flush Valve Pressure: _________ PSI
■ Application Rate: ________ inches per hour
■ Evapotranspiration Rate (inches per week):
Jan. __________ May ____________ Sept. ___________
Feb. __________ June ____________ Oct. ____________
Mar. __________ July_____________ Nov. ___________
Apr. __________ Aug. ____________ Dec.____________
_____________________________________________________________Landscape Dripline Design
■ Routine Preventative Maintenance
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