500 SCFM DONALDSON MODEL #AEHD-500 HEATED REGENERATIVE DESICCANT DRYER: STOCK 15154

Manufacturer

DONALDSON

Category

Miscellaneous Machines

Type

DRYERS

Stock

15154

Model

500 SCFM AEHD-500

Dealer Location

Ohio

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Spec Sheet



SERIAL 2695797-1
MODEL AEHD-500
SCFM 500
HEATER 9 KW
DESICCANT 700 LBS
CONNECTIONS 2"

How The AEHD Series Works 

Filtering and drying incoming air. Hot, saturated compressed air is filtered as it passes through our 0.01 micron high-efficiency coalescing prefilter (F1, recommended option) before entering the dryer. Compressed air continues through the inlet valve (V1), is dried in the desiccant tower (T1), and exits through an outlet valve (V5) and final particulate filter (F2, recommended option), while the other desiccant tower (T2) is being regenerated.

Desiccant regenerated in T2. A portion of the dried air is diverted through purge valve (P3) at near atmospheric pressure and heated by the electric heater (or optional steam heater) to 400°F before passing through regeneration valve (V4) and into the regeneration tower (T2). The heated air removes moisture vapor from the desiccant surface.

Dryer operation is performed automatically by a programmable logic controller (PLC). The standard drying and regeneration time cycle is 8 hours. While one tower is drying incoming compressed air for 4 hours, the other tower is regenerating for 3 hours (heating time), then cooling for 50 minutes, and finally repressurizing to the line pressure for 10 minutes before switching over to the other tower. Switching from one tower to the other is performed only when both desiccant towers are at line pressure to prevent line surge and to minimize desiccant abrasion. 

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