coil cleaning

[Jobe Justice]

I am currently working on a rtu set on grade, serving a powder coated paint room. It is ten years old and has a very restricted evap coil. My question is what do I use to clean this residue from this process from between the fins of the evap. Water does not seem to work. They use acetone to clean the residue from the spray nozzles.

[Hardwater]

I use United 372 exterior coil cleaner you mix what ratio you want in a sprayer. For smaller coils I use United 166 Power Up foaming no rinse. Its lemon scented and works excellent.

[Hardwater]

I am currently working on a rtu set on grade, serving a powder coated paint room. It is ten years old and has a very restricted evap coil. My question is what do I use to clean this residue from this process from between the fins of the evap. Water does not seem to work. They use acetone to clean the residue from the spray nozzles.

What do you mean by "spray nozzles"

[Chris_Worthington]

What do you mean by "spray nozzles"

The Paint Nozzles

[Chris_Worthington]

I am currently working on a rtu set on grade, serving a powder coated paint room. It is ten years old and has a very restricted evap coil. My question is what do I use to clean this residue from this process from between the fins of the evap. Water does not seem to work. They use acetone to clean the residue from the spray nozzles.

This should be a 100% outside air/other then paint booth air going through your evaporator....

Are you pulling air from the space with dust, dirt and ???

OR

Are you pulling in outside air ???

Please tell us that you are NOT pulling air in from the booth

[Hardwater]

This should be a 100% outside air/other then paint booth air going through your evaporator....

Are you pulling air from the space with dust, dirt and ???

OR

Are you pulling in outside air ???

Please tell us that you are NOT pulling air in from the booth

Surley someone wouldn't pull return from a paint booth or would they?