Regenerative Tower Dryers

The Drying Process 

1. Pre filtered air enters the dryer and is channeled through the desiccant tower/s. 
2. Wet air passes through the tower/s where desiccant draws water vapor in while under pressure. 
3. After flowing through the desiccant, the now dry air is sent downstream. 
4. After two minutes, the control timer sends out a pilot signal shifting the internal piston. When the piston shifts, air is redirected from this tower/s to the opposite. 

The Regeneration Process 

1. A small amount of air from the dry outlet on the opposite tower/s percolates up through the regeneration orifice and back through the desiccant filled tower/s. 
2. The desiccant is dried as the sweep air passes back through the media. 
3. With the use of this air, the tower/s discharge water vapor through the mufflers located below the dryer manifolds. 
4. After 2 minutes, the control timer sends out a pilot signal shifting the internal piston. When the piston shifts flow is reversed and this tower/s begins drying the air. 

1. Disconnect tubing from Quick-Connect Fitting located on the piston cover. Push in on brass ring. While holding ring in, pull out tubing. 
2. Remove the four Socket Head Cap Screws holding the piston cover in place (4mm Hex Key Wrench). 
3. Remove Piston Cover for access to piston. 
4. Using a finger or a ½-13 bolt, remove the Piston from the Piston Bore; be sure you remove the Piston Spring. 
5. Using the provided grease, lubricate the Piston Bore. Grease thoroughly. 
6. Lubricate the three Piston O-rings shown above. Grease thoroughly. Note: It is unnecessary to grease the bottom Piston O-ring. 
7. Re-install the Piston and Piston Spring. 
8. Reattach the Piston Cover using the four Piston Socket Head Screws. Torque to 75 in lb. 
9. Reconnect pilot line.