Refrigerant Air Dryer for Air compressor

[1967Chevelle]

I have a Brand New air compressor

60 Gallon
11.5 CFM @ 90
135 PSI Max


I'm going to be using my compressor to paint car parts,

from the little research I've done it seems the best way to eliminate any moisture in the air lines is to install an Refrigerant Air dryer between the Pump and tank.

I found a used Refrigerant Air dryer,

Standard cubic feet per minute : 10
Max pressure : 232 PSI
115 Volt
Refrigerant : 134A
Pressure dew point: 33 – 39°F


Would this Refrigerant dryer work for my application? also its used how would I test it before buying it?

Thanks

 

[stonesfan68]

A standard refrigerated air dryer is rated for a maximum inlet air temperature of 100-120F. If your compressor has an aftercooler installed then the dryer will meet your needs. If the compressor doesn’t have an aftercooler then this dryer won’t work, unless the dryer is rated for a higher inlet air temperature.

 

[1967Chevelle]

No, my compressor does not have a cooler, I was going to install this refrigerant dryer between the pump and tank

Here are the Air dryer refrigerant specs;

Inlet air temp. Temp: 100 (Max 120)
Ambient temp. Temp: 100 (Max 104)
Pressure drop: 0,15 PSI (Max 5 PSI)
Pressure dew point: 33 – 39°F

 

[engineer2]

Refrigerated air dryers are always installed after the compressor tank. No need to modify your compressor.
There are two types.
High inlet temperature: no aftercooler needed.
Regular: aftercooler or light duty.
Your air dryer is near your compressor cfm rating. You need to get the datasheet to see if it fits the requirements. My guess is that it probably will be close enough. Some 10 SCFM air dryers have 1/4" or 3/8" piping.

 

[matt_i]

also its used how would I test it before buying it?

Have the seller run some air thru their compressor and show its collecting and releasing water. Just like you would use it.

Absent that setup I'd install a coalescing then dessicant filter as cheap insurance.

 

[BCreekDave]

I do car parts (not the entire car) and use a desiccant drier with a Motorguard M40 in-line as the final stage before my Iwata gun. The desiccant will last a couple of hours of spray time before needing regen’d in the oven for a couple of hours. I have enough desiccant on hand in a glass jar to change it out once if I am going to spray longer. My compressor also has an aftercooler with a coelescing water trap just before the tank and on humid days it will take about a pint of water out in an hour. With this setup I get zero water at the gun and the motorguard element still looks new after 20 hours of spray time.


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