Adjusting Hydrotech 2120 Timer Controller

The latest in my video series that I'm releasing on this blog below, is about how to adjust a Hydrotech 2120 irrigation, lawn sprinkler pump controller or timer (same thing). This is the most common type of controllers that go together in conjunction with the index valve type of irrigation system setup like shown in my previous blog post.

The Hydrotech 2120 has a built-in pump start relay which relays 220 volts to the landscape irrigation pump when the timer tells it to. You program the timer and tell it when you want the pump to run. In the video I show how to program and set the cycle run times. This type of timer is not used for an electric valve system.



Other Hydrotech models such as the 2110, 2114 and 1100 series controllers all work the same way, they just vary in their voltage input and output, which is determined by the voltage output of your power source and the voltage requirement of your sprinkler pump.

Most sprinkler pumps (around 90% in my area of Florida) run on approximately 220 volts (seeing a 215v - 240v range is common). The other 10% run on approx. 110 volts - 120volts. The only fairly unique model in this set of controllers is the 2114, which takes in 220v and only relays 24 volts to control typical sprinkler system electric valve

Scott
Irrigation Systems