Edie011
Member
My automatic trolley isn't producing a good amount of presoak. It spits and sputters air with some presoak, more comes out the bottom of trolley. It is powered by a yamada diaphragm pump.
Low presoak volume
- Thread starter Edie011
- Start date
JGinther
Zip-tie engineer
Either air pressure assist (foam air) is set too high, or pump is trash...
Edie011
Member
Recommended is 65psi. I tried going higher and lower with the pressures and nothing helped.
MEP001
Well-known member
Your presoak could also be at fault. I tried to run a powdered presoak that didn't have enough foaming agent, and it did the same thing.
The easiest way to tell if the adjustment is at fault or the pump is failing is to turn the air all the way down and start with just liquid. Listen for the pump running continuously - if it's going bad you'll hear the rhythm change or stop. If it does, the pump is bad. Turn the air up a little at a time and check the bay - if it goes straight from all liquid to sputtering without ever making good foam that will cover like it's supposed to, it's the presoak.
The easiest way to tell if the adjustment is at fault or the pump is failing is to turn the air all the way down and start with just liquid. Listen for the pump running continuously - if it's going bad you'll hear the rhythm change or stop. If it does, the pump is bad. Turn the air up a little at a time and check the bay - if it goes straight from all liquid to sputtering without ever making good foam that will cover like it's supposed to, it's the presoak.
Edie011
Member
Rhythm isn't consistent. It goes up and down
MEP001
Well-known member
Edie011
Member
About 10gpm right?
