foam/soap spraying arch issue

[silvershinecarwash]

Hi, i am looking for a little assistance in an issue at the car wash i am working at. i have a foaming spray arch and yesterday it started making a buzzing noise at the top right of the arch. the solenoid piece up top had drastically worn and today upon test runs the arch itself turns off any water or chemical that passes through it but the air pressure is staying on which is causing the arch to constantly use up air pressure inside the tank in the back. this issue than causes the tank to get to hot and allows me to not run. i believe the issue is a the solenoid valve but after changing it the issue has persisted and not stopped . any tips or help would be greatly appreciated.

 

[OurTown]

Could be a bad air regulator that is leaking.

 

[Earl Weiss]

You may have 2 solenoid valves - (Difficult to know details of your system) One for the liquid or if liquid is supplied by an air operated pump to the air supply for the pump and another for the air supply to the arch. .

 

[silvershinecarwash]

theres 2 solenoids valves on top of arch. just a normal one on one side and the other side has a pressure regulator on it. long story short, the owner passed away unexpectedly last month and his kids are trying to keep everything running. they and myself know basics of fixing things just in general working with their dad the owner. we replaced the solenoid and air continued and swapped it in the opposite direction i believe is what i was told and it stopped everything through the arch now. would you able able to explain where the air regulator maybe located on the arch or is the pressure gauge attached to one of the solenoids?

 

[OurTown]

Take a photo of the setup.

 

[Earl Weiss]

Having solenoids in the tunnel was an older system. Having them in the equipment room closer to the source of the air or liquid makes things easier to work on - Yep - need photos. If soap solution is supplied by an air operated pump the ari regulater to that pump air supply wouldcontrol solution volume. Air regulater on airline controls air pressure and volume to the arch. Yes - Take photos of arch and back room sources for the air and solution.