Closedown Procedures
Making sure that your irrigation system is properly prepared for the coming winter can save a lot of time and money in the long term. Do not neglect this important task.
With the amount of electronics and mechanics involved in modern irrigation systems it is usually a good idea to have a maintenance contract with specialists in this field.
- Each irrigation system can be different, however, the following general procedure will act as a guide:
- Firstly, locate the and turn off the main stop-valve that connects the irrigation system with the mains supply.
- Open drain valves within the system itself (i.e. the drain pipes) and drain off the water held within the pipes. Ensure the valves are almost closed shut, but leaving an opening of 5mm or so. This will prevent vermin from entering the pipes as could occur if left fully open.
- Drain the irrigation pumps in the pump house.
- Inspect the pumps and motors for wear and damage.
- Grease the pump mechanism as required. Follow the manufacturer's instructions.
- Inspect the pump house itself for leaks and also gaps where cold wind can get inside. Rectify as needed.
- Check that any thermostat controlled frost heaters in the pump house are working properly.
- Secure the pump house, especially if it is located in areas that are not well used in the winter months. This can help reduce the potential effects of vandalism.
- Check the electric cable that powers the sprinklers etc. This should be carried out by a qualified electrician.
- Inspect each sprinkler for wear and damage. Seals may have deteriorated, whilst solenoids can become worn and need replacing.
- Make sure water has drained from the sprinkler head.
- Check valve box chambers and make sure they are free from water and debris.
- Controller units typically have their programmes cleared but are left on for the winter. Check with the manufacturer's instructions.
- If leaks have been noticed during the summer then now would be a good time to investigate further.
- Drain the water from the water storage tank so as to allow the ball valve to be fully open.
- Water tanks that have a butyl liner may be required retain a fair amount of water within the tank to protect the fabric of the liner itself and maintain adequate stability for the tank.
- Throughout the autumn check that debris, especially leaves do no enter the tank area.
- Finally (well, this should have been done first!), Check the manufacturer's and installer's guide for the winter close down of the irrigation system.