How often should an air dryer purge?
Air Tanks and Purge Valves Up to once a month for vehicles with high air demand or every three months for a typical line haul truck is recommended.
How often should I change my air dryer filter?
For severe service applications, such as residential refuse trucks or school buses, the air dryer cartridge should be replaced every year or 100,000 miles. For pick up and delivery operations, or for double- and triple-trailer line haul trucks, every two years or 200,000 miles is recommended.
What does an air dryer filter do?
Compressed air dryers are special types of filter systems that are specifically designed to remove the water that is inherent in compressed air. The process of compressing air raises its temperature and concentrates atmospheric contaminants, primarily water vapor.
Is there continuous air leak from air dryer purge valve?
After the system purges, there is a slow but steady air leak from the purge valve. Shut the truck off and it still leaks. It will loose down to 60 psi in about 45 minutes, and is completly depleted in about 1.5 hours. I change the purge valve, but that didn’t help. Can anyone give me some ideas on a remedy for this? I sure would appreciate it.
Why does my air dryer Purg every 30 seconds?
Your intuition is probably right. I think it would be the unloaders. When the system reaches 120psi the governor allows system air to the air dryer to signal the purge and allows air to the unloaders. The unloaders will just hold the check valves off their seat in the compressor head to stop the air from being pushed out of the compressor.
How often does my Cummins 8.3 dryer Purg?
I have a 1997 cummins 8.3 with a holset compressor and AD-9 dryer. The dryer is purging about every 30-45 seconds. It does this whether I am parked or driving. I know I do not have any air leaks as I only lose about 5 PSI over 24 hours. -The pressure in the tanks seem to stay steady at about 120psi.
How big is the check valve in my air dryer?
There are three lines to the dryer, the largest from the compressor to the dryer, the next from the dryer to the wet tank, them a small line from the dryer to I think the governor.This small line looks to be 3/8″.Which one will have the check valve. The Meritor parts list shows a check valve in the dryer on the outlet port.