Kaeser Pressure-Swing (Heatless) Desiccant Compressed Air Dryer KADW 7A

CAUTION: The heatless desiccant dryer is a pressure containing device. Depressurize before servicing.

IMPORTANT: The use of the correct replacement desiccant is necessary for proper drying operation. Never use hygroscopic salts of the type commonly used in "deliquescent" type dryers.

A. Frequency of Desiccant Replacement - Desiccant should be replaced whenever the required dew point cannot be maintained while the dryer is being operated within its design conditions and there are no mechanical malfunctions.

NOTE: Desiccant life is determined by the quality of the inlet air. Proper filtering of the inlet air will extend the life of the desiccant.

B. Procedure for Desiccant Replacement

1. Depressurize and de-energize the dryer.

2. Remove front panel from cabinet.

3. Disconnect tubing from top and bottom of desiccant towers and unscrew strainer assemblies. Remove the mounting screws from the outlet shuttle valve mounting bracket to aid in disconnecting the tubing at the top of the towers.

NOTE: Be prepared to catch the desiccant being removed in a container. Desiccant will readily pour out when bottom strainer is removed.

Pressure drop reaches 10 psi or it's been a year since the last replacement

WARNING: THIS FILTER IS A PRESSURE CONTAINING DEVICE. DEPRESSURIZE BEFORE SERVICING.

Filter isolated (inlet and outlet valves closed) or air supply shut off

Filter depressurized by slowly opening manual drain valve

Bowl removed by pushing up, turning 1/8th turn to the left, and pulling straight down

Old element discarded and new one installed with o-ring in place

NOTE: Prefilter - Do not handle element by outside foam cover. Handle by bottom end cap only.