How To Replace A Sprinkler Pump? (Ultimate Guide)

Similar to any machine or living being in the world, a pump is susceptible to decay and malfunction. Once I let this truth settle in, I began to gather all the information and tools necessary for replacing my sprinkler pump. There are certain steps that we have to go through to set up the pump properly.

Necessary steps include

  • calculating and selecting a pump that matches the pressure and flow requirements
  • gathering tools for installation
  • connecting the pump to your irrigation system
  • covering the threads with tape
  • mounting and controlling the relay controller, and lastly
  • switching on the water supply

Now that I’ve pointed out the procedure, you need to know when before you get to the subject of how to replace a sprinkler pump. So, how do you decide when to replace the current one?

How To Replace A Sprinkler Pump

When to Replace the Sprinkler Pump

Obviously, there are signs which will indicate that your existing water source is deteriorating or wearing out. Here are a few of the signs that signal the impending doom of your sprinkler system.

  1. Poor water pressure
  2. Unusually high electric bill
  3. Frequent leakage
  4. Inefficient design
  5. Very old irrigation system

Poor Water Pressure

You might begin to notice that your sprinkler pump cannot project the water as far as it used to. This is an indication of the pump aging and wearing out. The primary reason behind such problems is either cracks or chips in the sprinkler heads.

Unusually High Electric Bill

If you have been getting a surprisingly high amount of water bills in each passing summer, then it is high time that you replace it with a new sprinkler system. As they age, the system usually becomes less efficient and requires more and more water to get the work done.

Frequent Leakage

The small leaks that you often notice in your irrigation systems can be repaired. Even if it continues to leak after multiple repairs or increases in frequency, it is probably time to give up the pump repair and install a new system altogether.

Inefficient Design

The existing sprinkler system might be poorly designed for your garden or lawn. An inefficient design might cause the sprinkler head to overshoot the lawn, or you may find dry spots where the water hasn’t been reaching properly.

A new sprinkler system will be needed in these situations, one that can easily water up to your lawn and plants in the garden.

Very Old Irrigation System

Every home sprinkler system comes with a lifespan. A very old, let’s say 10-year-old irrigation systems that are at the end of its lifespan is more likely to break down sooner or later. Keep in mind that if your old pump is over 5 years old, it is likely worn, and as pumps begin to wear out, their performance decreases. ( Even if your old system seems to be working properly as it did from the beginning, you still need to upgrade the system in the long run.

Thanks to the advancement in technology, the new sprinkler systems in the market are much more energy-efficient and cost-effective than the older ones.

A Little Advice

If you want to replace your sprinkler with an exact pump, you need to make sure that the new pump is the same size as the old one. However, if you are going for buying a new sprinkler pump model or brand, then there are a couple of things you need to keep in mind.

For instance, determining the flow and pressure requirements of your current system of irrigation and the miscellaneous tools that you need to install the new pump.

How To Replace A Sprinkler Pump

So how do we install the new sprinkler pump in the existing system? Below are some steps which concisely explain the process.

1. Calculate the Pressure and Flow Requirements

You have to evaluate both the pressure and flow requirements when you are replacing the pump. For this, you need to estimate the flow in GPH (gallons per hour) by adding the given flow requirements for each of the emitters or sprinklers in the irrigation system.

To calculate the pressure, you have to attach the pressure gauge to the pipe or faucet that will be connected to the pump.

2. Select the Pump That Matches the Flow and Pressure of Your System

After you get the flow and pressure requirements, you need to select a water pump rated for the pressure and flow it will come up against in the irrigation system.

You also need to keep in mind the electrical connection that is required to operate the pump. Most of the pumps have a 220-volt connection.

3. Gather the Things Needed for system Installation

Some of the objects you need to gather for your installation are water pressure gauge, plumber’s tape, irrigation pump, pump relay controller case, electrical wire, and outdoor electrical outlet.

4. Connect the Pump to Your Irrigation System

Next, you have to connect the new pump to the system. Make sure that the water supply from your house is properly connected to the inlet valve. Also, the system needs to be connected securely to the outlet.

5. Cover the Threads with Tape

Before you connect the pump, the threads on the connectors have to be covered properly with the plumber’s tape to prevent any leakage.

6. Mount the Relay Controller

Now you have to fix the pump relay controller in a location that is close to the pump but also away from direct sunlight.

7. Connect the Controller

After mounting it, connect the relay controller to your pump by following the instructions in the manual. Then connect both the pump and relay to your main electrical system.

8. Turn on The Water Supply

Lastly, turn on the supply of water to your irrigation system. Also, switch on the controller relay and the pump so that the newly installed sprinkler system can start channeling the water through the system.

Final Words

Replacing sprinkler pumps is a pretty straightforward process if you know what to do and how to do it. I hope the information and steps provided above will help you to install the pump without any hassle.

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