why?

[Papa John]

is the chemical jug suction hose pumping out water instead of drawing it up? The chemical injection hoses are pulsating.

 

[Jim Pemberton]

is the chemical jug suction hose pumping out water instead of drawing it up? The chemical injection hoses are pulsating.

What is the brand/model machine you're using?

 

[Josh Wood]

It sounds like you need a new diaphragm.

But what do I know?

 

[SamIam]

is the chemical jug suction hose pumping out water instead of drawing it up? The chemical injection hoses are pulsating.

Hole in diaphragm or bad check valves

 

[Mikey P]

is the chemical jug suction hose pumping out water instead of drawing it up? The chemical injection hoses are pulsating.

On a 370 or your Gavinmount?

 

[Papa John]

370.
there was a leak in the top port of the flow meter-- so Maybe that was the issue. I'll find out today.

 

[Papa John]

Hole in diaphragm or bad check valves

I'll check if The flow meter isn't the issue.
The water pump has 3300 hrs and I've only done oil changes. maybe a rebuild is in order?

 

[Papa John]

What is the brand/model machine you're using?

370

 

[Papa John]

It sounds like you need a new diaphragm.

But what do I know?

I don't run chems through my chem meter/machine. So I would think the diaphragm would last longer.

 

[Jim Pemberton]

I don't run chems through my chem meter/machine. So I would think the diaphragm would last longer.

The opposite:

The diaphragm is getting hit with pressure from the water pump to move the chemical through. When the other side is "dry", it is forced to flex further and is more rapidly damaged. Prime in straight water to put water onto the opposite side of the diaphragm, but keep the meter off.

Or remove the entire chemical pump and you won't have to deal with the issue at all.

You probably also have a bad chemical check valve, which would be why your having water come out the hose.

 

[Papa John]

It sounds like you need a new diaphragm.

But what do I know?

Hole in diaphragm or bad check valves

The opposite:

The diaphragm is getting hit with pressure from the water pump to move the chemical through. When the other side is "dry", it is forced to flex further and is more rapidly damaged. Prime in straight water to put water onto the opposite side of the diaphragm, but keep the meter off.

Or remove the entire chemical pump and you won't have to deal with the issue at all.

You probably also have a bad chemical check valve, which would be why your having water come out the hose.

The new diaphragm looks different and is smooth with less impressions on it. Jon Don said they sent the correct one for my machine. Are the impression there because it's old or happen once installed?

 

[Jim Pemberton]

The new one should be smooth.

The impressions are damage from the pulsations against the air in the “dry” side of your diaphragm.

Is there a deep impression around the edge of your diaphragm?

Post a pic, or send it to me by DM if you don’t like being roundly criticized by the insensitive and gleefully critical crowd here

 

[hogjowl]

Oh but I wanna see

 

[SamIam]

I'll check if The flow meter isn't the issue.
The water pump has 3300 hrs and I've only done oil changes. maybe a rebuild is in order?

On the chemical pump if you have one not the actual pump

 

[SamIam]

Like Jim said, they wear like that divots.

 

[Papa John]

photos