Sprinkler pump keeps loosing it prime. Intake line runs 90' to water source. Primed the intake line from water source back to pump. Have been using this pump for 10 plus years and have never had such a hard time getting it primed. Prime it and it will run for a while then loose prime. Reprime and go again and again. Have redone connections where there was any leakage. Any suggestions?

You can't prime the pump with the same water source you are trying to build pressure in. Shut off all the water going to the house, use the neighbors hose or have several gallons (maybe 5) to prime the pump and continue priming pump until it starts to build head pressure then plug prime hole.
RJ

Hi
That means the pump needs to be primed by running water through the wand. Push the water button and open the knob on the right. You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Coffee grounds will get into the intake and restrict the flow meter. If you get a restriction in the water intake (below the water tank, on the machine) the pump may run and water comes out, but the flow meter does not create the jet of water needed to spin the turbine wheel to send impulses to the computer. You get the ventilate message. One thing to remember is when you are working on the water system (have the water tank off) do not fill the bean hopper and visa versa. Keep them covered when working on the other. Cross contamination will damage a machine fast
The first thing that I would check is the tip of the steam wand for a plug. If that is clear then I would suspect a clogged flow meter. If you can get the flow meter out it twists apart and don't loose the parts and the dot on the turbine goes up. Clean out the small opening on the bottom pipes where the hoses attach. Look inside and make sure that they are clear before reassembling.

Ventilate message

That means the pump needs to be primed by running water through the wand. Push the water button and open the knob on the right. You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Coffee grounds can get into the intake and restrict the flow meter. If you get a restriction in the water intake (below the water tank, on the machine) the pump may run and water comes out, but the flow meter does not create the jet of water to spin the turbine wheel to send impulses to the computer. You get the ventilate message. One thing to remember is when you are working on the water system (have the water tank off) do not fill the bean hopper and visa versa. Keep them covered when working on the other. Cross contamination will damage a machine fast
The first thing that I would check is the tip of the steam wand for a plug. If that is clear then I would suspect a clogged flow meter. If you can get the flow meter out it twists apart and don't loose the parts and the dot on the turbine goes up. Clean out the small opening on the bottom pipes where the hoses attach. Look inside and make sure that they are clear before reassembling.

Hi
That means the pump needs to be primed by running water through the wand. Push the water button( the one with the drop or drops). You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed.

Hi
That means the pump needs to be primed by running water through the wand. Push the water button for water(the drop symbol) You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Ventilate

Hi That means the pump needs to be primed by running water through the wand. Push the water button and open the knob on the right. You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Coffee grounds will get into the intake and restrict the flow meter. If you get a restriction in the water intake (below the water tank, on the machine) the pump may run and water comes out, but the flow meter does not create the jet of water to spin the turbine wheel to send impulses to the computer. You get the ventilate message. One thing to remember is when you are working on the water system (have the water tank off) do not fill the bean hopper and visa versa. Keep them covered when working on the other. Cross contamination will damage a machine fast

Hi That means the pump needs to be primed by running water through the wand. Push the water. You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Coffee grounds will get into the intake and restrict the flow meter. If you get a restriction in the water intake (below the water tank, on the machine) the pump may run and water comes out, but the flow meter does not create the jet of water to spin the turbine wheel to send impulses to the computer. You get the ventilate message. One thing to remember is when you are working on the water system (have the water tank off) do not fill the bean hopper and visa versa. Keep them covered when working on the other. Cross contamination will damage a machine fast

Hi That means the pump needs to be primed by running water through the wand. Push the water button and open the knob on the right. You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Coffee grounds will get into the intake and restrict the flow meter. If you get a restriction in the water intake (below the water tank, on the machine) the pump may run and water comes out, but the flow meter does not create the jet of water to spin the turbine wheel to send impulses to the computer. You get the ventilate message. One thing to remember is when you are working on the water system (have the water tank off) do not fill the bean hopper and visa versa. Keep them covered when working on the other. Cross contamination will damage a machine fast

Hi
That means the pump needs to be primed by running water through the wand. Push the water button and open the knob on the right. You will hear the pump change tone when it primes and the light or message will disappear. If you have a restriction in the intake line the message will not go away. There is a flow meter inside the machine that measures water flow. If the flow meter does not spin when the pump is running, the computer thinks that the pump is not primed. Coffee grounds will get into the intake and restrict the flow meter. If you get a restriction in the water intake (below the water tank, on the machine) the pump may run and water comes out, but the flow meter does not create the jet of water to spin the turbine wheel to send impulses to the computer. You get the ventilate message. One thing to remember is when you are working on the water system (have the water tank off) do not fill the bean hopper and visa versa. Keep them covered when working on the other. Cross contamination will damage a machine fast.

i think its pump side first as its easier to push water through a filter rarther than trying to **** it , Also the only reason it could loose its prime is through air getting in the system.