When should I replace my air dryer desiccant?
For compressed air dryer applications that only require 0° dew point, a simple moisture indicator that changes in color can be used. Activated Alumina desiccant is typically good for three to five years before it needs to be replaced.
How do you size a desiccant air dryer?
To size the desiccant air dryer to match this compressor, we need to calculate 65% of the total CFM, in this case, 20. The max output is no more than 13 CFM or 65% of the total CFM of 20. The desiccant air dryer only needs to work at 13 CFM to fit the compressor and match the total dry air needed. Why It Matters!
Why did my air dryer stop working?
Heat exchanger coils are dirty If your coils are dirty, your air dryer isn’t getting proper air flow. The dirty lint blocks and traps the air. Time to clean! Use a soft cloth or brush to clean dirt from the refrigeration condenser coil to allow free passage of air.
What are the most common desiccant materials used in dryers?
The most common desiccant is silica, a nontoxic, water insoluble white solid used in a number of industries. Some other desiccants include activated charcoal, calcium chloride, calcium sulfate and molecular sieves.
What is air dryer purging?
When the air pressure becomes greater than that of the preset “cut-out”, the governor controls the unloader mechanism of the compressor to stop the compressor from building air and also causes the air dryer to purge.
What size compressed air dryer do I need?
Most often, you can assume 100°F Ambient Temperature, 100°F Inlet Temperature to the Dryer (aka discharge of the compressor), and 100psi. If your air compressor can put out 50cfm, you need at least 50 cfm of capacity in your air dryer. It is important to note that your dryer is then already at max capacity.
How do you size a refrigerant air dryer?
To figure out the right-sized dryer, divide the total flow by the total correction factor: 200 cfm / 0.861= 232 cfm (at standard conditions). Now, you can look at the dryers’ stated capacity on the dryer literature (excerpt shown below) and see which one will dry 232 cfm effectively.
How do you diagnose a bad air dryer?
Here are some of the signs that you may need to replace or repair your air compressor or dryer.
- Your Compressor Won’t Start.
- Your Compressor Won’t Stop.
- You Hear Odd Noises From the Compressor.
- You Have Circuit Breaker Problems.
- Your Compressor Shakes or Makes Ticking Noises.
- Your System Blows Warm Air.
Which material is used as desiccant in air dryer?
Regenerative desiccant type dryers use a porous desiccant that adsorbs the moisture by collecting it in its myriad pores, allowing large quantities of water to be retained by a relatively small quantity of desiccant. Desiccant types include silica gel, activated alumina, and molecular sieves.