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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 – Four mounting holes are provided for wall mounting of Models DE3,

DE4 and DE5. 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.

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.

3. Piping connections: For maximum flow, INLET and OUTLET piping should be schedule 40

pipe or equivalent I.D. tubing. DE3, DE4 and DE5 inlet and outlet ports are 1/2" female,
NPT, purge porting is 1/2" female, NPT.

Instruction Manual / DE3, DE4 and DE5

Wilkerson Compact Heatless Air Dryers

C A U T I O N :

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Summary of Contents for DE3

Page 1: ...INSTRUCTION MANUAL FOR WILKERSON MODELS DE3 DE4 AND DE5 COMPACT HEATLESS AIR DRYERS OPERATIONS DE3 DE5...

Page 2: ...tem providing ultra dry compressed air to moisture sensitive applications Instruction Manual DE3 DE4 and DE5 Wilkerson Compact Heatless Air Dryers C D A H K L J F E G MUFFLERS OPTIONAL B Model Number...

Page 3: ...inlet air to flow into Tower A drying A portion of the dry outlet air is allowed to flow through the outlet shuttle valve purge orifice into Tower B This dry purge air expands to nearly atmospheric p...

Page 4: ...ernal 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 tha...

Page 5: ...0 to 150 PSIG 2 7 to 10 3 bar 1 The dryers must be operated in accordance with the factory sizing charts and original cus tomer requirements in order to achieve desired dewpoints Inlet pressure inlet...

Page 6: ...oid valves during a two minute total time cycle The timers are equipped with a one hour memory capability If power is interrupted the dryer will resume operation at the same point in the cycle when po...

Page 7: ...orifice remove the three screws on one side of the outlet shuttle valve Remove and replace the orifice Reassemble shuttle valve D Cycle Timer The solid state cycle timer requires no maintenance and ca...

Page 8: ...DE3 DE4 and DE5 Parts Identification Parts Identification Figure 5 Instruction Manual DE3 DE4 and DE5 Wilkerson Compact Heatless Air Dryers 7 8 11 1 13 2 3 4 9 5 12 6 10...

Page 9: ...RP 94 394 1 Outlet Shuttle Valve Specify Orifice No 8 8 DRP 94 6XX 1 Purge Orifice Specify Orifice No For Dryers PARTS FOR OPTIONS with Option Codes 9 DRP 94 371 2 Purge Muffler 1 2 DE3 DE4 M DRP 94 3...

Page 10: ...lean hole of debris Use air gun to clean A7 Solenoid coil burned out Check magnetic field from coil Replace operation Place iron or steel material screwdriver or nail top of coil to feel the magnetic...

Page 11: ...ESHOOTING GUIDE B PROBLEM RESTRICTED FLOW THROUGH UNIT POSSIBLE CAUSE CHECK CORRECTIVE ACTION B1 Improper operating conditions See A2 A3 A4 above B2 Dirty or obstructed inlet air See A5 above filter B...

Page 12: ...ttle not Dirty or obstructed inlet air filter Check filter element Replace shifting C5 Purge orifice plugged Remove and inspect purge orifice Clean hole of debris Use air gun to clean C6 Timer not ope...

Page 13: ...t corrected See Section A of Troubleshooting Guide D2 Sensor not dried out Allow several minutes for To speed up alarm clearing sensor to dry out after correcting bleed some air through tire valve dry...

Page 14: ...umidistat board for correct wiring Check Also check for line voltage at continuity of wires Common and Neutral E2 Sensor cable connection Check cable connections at Reconnect sensor and at humidistat...

Page 15: ...ith voltmeter check for line voltage at shutoff solenoid valve wires 15 and 16 If not reading line voltage check wires 17 and 18 then wires 11 and 18 F2 Coil burned out With power on disconnect If no...

Page 16: ...Instruction Manual DE3 DE4 and DE5 83 919 000 FL 6 98 Wilkerson Compact Heatless Air Dryers...

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