Wilkerson DE2 User Manual
INSTRUCTION MANUAL FOR
WILKERSON MODELS DE0, DE1 AND DE2
COMPACT HEATLESS AIR DRYERS
®
OPERATIONS
DE0 - DE2
This instruction manual covers the installation, operation, maintenance and troubleshooting guide
for the Wilkerson compact heatless air dryers, models DE0, DE1 and DE2. These dryers are
designed to be installed into a compressed air system, providing ultra-dry compressed air to
continuous feed, point-of-use applications.
Instruction Manual / DE0, DE1 and DE2
Wilkerson Compact Heatless Air Dryers
GENERAL
Model
Number
DEO
DE1
DE2
A
10.875
13.875
16.875
B
4.0
C
2.72
D
1.50
E
1.82
F
3.375 ± .005G1.688 ± .016
H
4.38
J
.25
K
.438 ± .016
L
8.125M7.219
Approx.
Wt.
(lbs.)
6 3/4
7 3/4
8 3/4
A
A
B
C
F
H
K
J
L
M
G
D
E
Outline Dimensions
Figure 1
Top View
Front View
Outlet
Inlet
Front
Instruction Manual / DE0, DE1 and DE2
Wilkerson Compact Heatless Air Dryers
Wilkerson DE series compact heatless air dryers employ the principles of pressure swing
adsorption (PSA). The operation is fully automatic and relatively little maintenance is required.
The dryers utilize two identical desiccant towers, metering orifices, two 3-way DC operated
solenoid valves controlled by a solid state electronic timer. Wet air at line pressure enters and
flows through one of the towers where nearly all the water vapor is adsorbed while the other tower
is being regenerated. Every 30 seconds, the process is reversed, providing a continuous flow of
dry air.
In the flow schematic shown below, Valve A (energized) directs the inlet air to flow into Tower A
(drying). Aportion of the dry outlet air is allowed to flow through an orifice into Tower B. This dry
purge air expands to nearly atmospheric pressure, sweeping the water out of the desiccant as it
flows through Tower B (regenerating) and out of the Valve B (de-energized) exhaust port. The
timer controls the cycling of normally closed solenoid valves.
The orifices are fixed and are sized by the factory based on flow, pressure and dew point required.
Flow Schematic
Figure 2
CHECK
VALVES
A
PURGE
ORIFICE
PURGE
ORIFICE
B
DESICCANT
TOWER A
DRY AIR
TO APPLICA TION
SOLENOID
VALVE A
SOLENOID
VALVE B
DESICCANT
TOWER B
PURGE AIR
EXHAUST
WET AIR IN
DEO, DE1 and DE2
DESCRIPTION OF OPERATION
Instruction Manual / DE0, DE1 and DE2
Wilkerson Compact Heatless Air Dryers
INSTALLATION AND OPERATION
NOTE
Wilkerson DE series compact heatless dryers have been
thoroughly inspected and tested at the factory and are in
proper working condition.
A. Initial Inspection – Remove the air dryer from the shipping carton. Inspect the exterior and
remove the electrical cover and inspect the interior components for any shipping damage.
NOTE
Any damage noticed at this time must be brought to the
immediate attention of the carrier and a freight claim must
be filed.
B. Warranty – Please read this instruction manual carefully before installing the air dryer.
Failure to follow proper instructions could result in damage to the equipment and may void
the product warranty.
EXCEPT as otherwise specified by the manufacturer, this product
is specifically designed for compressed air service and use with
any other gas or liquid is a misapplication. Use with or injection
of certain hazardous liquids or gases in the system (i.e., alcohol
or liquid petroleum gas) could be harmful to the unit and result in
a combustible condition or cause hazardous external leakage.
Manufacturers' warranties are void in the event of a misapplication
and manufacturer assumes NO RESPONSIBILITY for any
resulting loss. Before using equipment with fluids or gases other
than air, or for non-industrial applications, consult Wilkerson
Corporation for written approval.
C. Installation/Mounting – The DE series air dryers are designed for either wall or in-line
mounting. Models DE0, DE1, and DE2 allow for four alternate methods of piping. All dryers
require a clean ambient environment for proper operation. Normally, most locations where
ambient temperatures range between 40˚F and 125˚F are suitable for installation since drying
efficiency is more dependent on the temperature of the compressed air flowing through the
unit. Operating a unit at temperatures which could result in freezing may cause damage to the
dryer. Do not operate at temperatures so low that freezing is a possibility. The heat of internal
desiccant adsorption and normal solenoid valve operation may cause the unit to become
warm. This is normal and does not indicate a malfunction of the unit. The warm temperature
is more pronounced in a dryer operating at low flow rate.
1. Install dryer where ambient temperatures are between 40°F (4.4°C) and 125°F (52°C).
2. Mount dryer in a vertical position and with the desiccant towers at the top.
CAUTION
!
!
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