We have a beginner and advanced original factory manual below. Also, we have a Frequently Asked Questions page that we have compiled based on our past customers' experiences. We recommend you start with the videos and the manual and then read the Controller FAQ Post.
Yes, for those sprinklers that have an above-ground backflow, the sprinkler system must be turned off and drained. You need to go to your water meter and look for the circular green box that is right beside your water meter. Inside, there will be a valve that you should turn a half turn. This turns the water to your sprinkler system off. Then, you should go to your backflow and turn both the "test cocks" with a screwdriver. These cocks stick out of the side of the backflow and require a flat head screwdriver. After you have opened both of these, go to your sprinkler system and turn the timer to run one manual cycle.
While this is adequate for most winters, a hard winter will still freeze your system. For this reason, we recommend you run compressed air through the system. You can do this with an air compressor and a 1/4 inch male adaptor. If you can't do this, we recommend you call us and we will winterize your system.
For systems that do not have an above-ground backflow, you need to turn the valve off that is right by the water meter.
It should be noted that if we do not winterize your sprinkler system, the freeze damage is not covered under warranty.