Hydraulic pumps deplete the pressure at some point and will stop working if they are kept off for an extended period, such as in winter. To put them back into operation, a process called "priming" is necessary: that is, the water is sucked back in and forced to circulate, in order to create sufficient pressure for the pump to resume its work. Although priming methods may vary slightly by pump type, the steps outlined in this article show the basic criteria for carrying out the process.
Steps
Part 1 of 3: Prepare the System
Step 1. Disconnect the electrical power from the pump
No device you are tinkering with should ever be left on. Go to the base of the pump and make sure it is turned off.
Step 2. Locate a pipe connection that allows access to the plumbing system
In a pool pump, this will be the filter basket. If you are not working on such a pump, use the attachment closest to the water tank.
Step 3. Verify that there is no damage to the system
Check pipes and gaskets for possible cracks or damage, especially if the system was shut down during the winter period. Check each port to see if they need to be tightened and manually check all valves. Make sure all system bolts, screws, and gaskets are in place and securely fastened. You should also inspect any safety guards, bands and pulleys.
Step 4. Prepare a hose that can be connected to an independent water source
This will remove any deposits from the hose and have clean water. Rinse the tube to remove any deposits. Run the water through it, maintaining a steady flow for a few seconds before stopping it. This is especially important for pipes that are used intermittently, or have not yet been used.
Many choose to connect the garden pump to the washing machine drain. However, if your garden pump contains lead, you should avoid using it for drinking. If you are using it for a well, be sure to install special filters for the water entering and leaving the pump
Step 5. Open the hydraulic system relief valves
This will prevent the pressure from building up. Check the pressure gauge to make sure everything is going according to plan.
Part 2 of 3: Run Water into the System
Step 1. Insert the hose into the plumbing connection
In a pool pump, insert it into the filter. If you are priming a pump for a building, connect the hose to the connection closest to the water tank. You now have a water source that feeds the building or pool.
Step 2. Open the water to feed the hose
At first you will feel the air flowing through the system. This is normal.
Step 3. Wait for the water to enter the tank
You should feel the water as it fills the tank or, if you have a pressure gauge, notice the level rise. In a pool pump, fill the filter basket and close the lid.
Step 4. Shut off the water feeding the hose
When you see the water leaking from the opposite side, you can cut off the power. This should only take a few minutes.
- When the water stops flowing to the opposite side (where you are trying to get the water to), the plumbing system has been pressurized.
- However, do not disconnect the hose, in case you need to repeat the process.
Part 3 of 3: Finish the job
Step 1. Restore electrical power and turn on the pump
Let it work for about a minute. Be aware that the pump may fail if the water tank pressure is equal to or greater than the cut-off pressure of the pump. If it doesn't start, this may be the reason.
If you have opened the vents, wait for the water to start flowing and then close them
Step 2. Wait for the pump to finish its cycle
If it turns off automatically, it is primed. If not, you need to try again. Try opening the water at the destination point. If you hear the pump turn on, you are good to go.
Step 3. Repeat all steps until the pump is primed and functioning normally
Under certain circumstances it may be necessary to repeat this operation several times.
If you have a tubeless steel tank, try leaving the drain open at the beginning of the procedure. In this way the incoming water can enter the tank pushing the air out of the drain. However, when you see the water coming out of the drain, close it
Advice
- If it is a pool pump, it is recommended to prime the skimmers first and then the main drain. This can be done by turning the diverter valve and closing the water directed to the main drain, and directing it to the pool skimmers. Then, use the diverter valve so that both the main drain and the skimmers are open and wait for the water to flow normally.
- Your goal in a water pump is to restore the pressure so that the device draws the water by itself. Check the gauges periodically and, if the pressure is not high enough or the pump is not working properly, repeat all the steps. It is normal to take a few tries when priming a hydraulic pump.
- If you can't locate a plumbing connection (step 2), perhaps you have a simple system where a valve needs to be set up. This can be done with a tee, a pair of pliers and some hose, and must be installed close to the water source.
