In areas where the frost flat extends to your sprinkler pipes, blowing outside sprinklers prevents bathe from Very cold in your pipes and rupturing them. A boner in blowing absent sprinklers may aftermath in sprinkler heads shooting commensurate self-propelled rockets, busted up pipes or air compressor oil entering your drinking imbue. Interpret on to memorize blow absent sprinklers.
Instructions
1. Shut off the doctor avail to your sprinkler development and manage the bleed on the avail limit. After the advantage border drains, quick the empty.
2. Carry an air compressor with the good extent of cubic feet per minute. Most household sprinkler systems charge at least a 50 cubic feet per minute air compressors. Finished application 125 cubic feet per minute for pipes up to 3 inches in diameter and an air compressor with 250 cubic feet per minute for anything larger.
3. Remove the back flow preventer located after the irrigation shut off valve and connect the air compressor to the back flow preventer rise.5. Turn on the air compressor and monitor the temperature and the pressure. If the air gets too hot it melts the pipes.
Make sure the air doesn't pass through the pump or the back flow preventer or damage may occur.4. Open the last valve or the valve at the highest elevation. Close remainder of the valves. Don't let the pressure exceed 50 PSI. Stop every two or three minutes and allow the air compressor to cool before continuing.
6. Run the air compressor until only air exits the valve. Turn the air compressor off, close the valve and open the next valve in line.
7. Repeat Steps 5 and 6 for each valve. You may need to cycle through the entire system again starting with Step 4 before you turn off the air compressor and put the back flow preventer back in place.
