Irrigation System Maintenance

Winterization

• Shut off main water source
• Open manual drain valves to allow for gravity if possible
• Shut all manual valves and pressurize with compressed air. (Compressors can be rented from a local rental supply).
• Switch controller to operation
• Advance controller to hold each zone on until heads blow air
• Repeat for each zone and controller
• Leave all small brass valves "open" if double check valve is installed
• Return controllers to "Automatic" and set to activate for at least several minutes per month. Leave "on" over winter.
• Disconnect compressor. Leave any manual drains open unless there is possibility of ground water back-up.

Spring Start-up

• Close all manual drain valves including double check valve
• Open system main valve to water supply
• Activate each zone on system timer and check for winter damage
• Set automatic cycles

System Maintenance

• Delegate responsibility for time clock to one well trained individual
• Prepare two copies of as-built plans, reduce one, laminate, store in timer area
• Colour code valves and clock information
• Correct design errors that cause runoff onto paved areas or structures
• Make sure all valves are accessible and not concealed by shrubbery
• Install check valves to prevent drainage to lower heads
• Schedule regular maintenance, repair, fine tune, check pressures
• Adjust time schedules constantly to allow for plant growth and seasonal requirements
• Irrigate slopes in short repeat cycles to avoid runoff
• Set times for maximum penetration and fewer applications
• Use drip and bubbler systems whenever possible