USER MANUAL
Series HC
Reference No. 145 Final Rev 5
Page 9
September 2004
SECTION 1:
(Continued)
1.4
PRODUCT INFORMATION
The adsorption dryer is used for the purpose of drying compressed air and other
gases according to its respective design. As a "standard model" the adsorption dryer
is equipped with two desiccant vessels and, depending on certain conditions,
provides pure, dry and oil-free compressed air or gases.
1.4.1
Theory of Operation
The HC heat-of-compression dryer uses the hot air from the compressor to
regenerate the desiccant. Each tower is sized for a minimum of 4 hours online,
but may be extended by use of the optional DPDS which will allow the dryer to
switch towers based on water load rather than time.
The DPDS (Dewpoint Demand System) is optional equipment and may or may
not be present on your particular air dryer. If your dryer is equipped with the
DPDS, see the associated DPDS Installation and Operating Guide for more
operational details.
The regeneration cycle is split up into three functions.