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Summary of Contents for Wilkerson DE3
- Page 1 INSTRUCTION MANUAL FOR DE3, DE4 ILKERSON ODELS OMPACT EATLESS RYERS DE3 - DE5 ® OPERATIONS...
- Page 2 This instruction manual covers the installation, operation, maintenance and troubleshooting guide for the Wilkerson compact heatless air dryers, models DE3, DE4 and DE5. These dryers are designed to be installed into a compressed air system, providing ultra-dry compressed air to moisture sensitive applications.
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Page 3: Description Of Operation
Wilkerson Compact Heatless Air Dryers DESCRIPTION OF OPERATION 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, a metering orifice, two shuttle valves, and two 2-way AC operated solenoid valves controlled by a solid state electronic timer. - Page 4 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.
- Page 5 Factory Recommended Dryer Installation Figure 3 D. Operating Specifications – The DE3, DE4 and DE5 series compact heatless dryers can be sized to operate from 40 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.
- Page 6 Wilkerson Compact Heatless Air Dryers F. Solid State Timers – The solid state timer used in the DE3, DE4 and DE5 dryers control the switching of the solenoid valves during a two minute total time cycle. The timers are equipped with a one hour memory capability.
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Page 7: Maintenance Instructions
C. Purge Orifice – If the operating conditions change from the label specifications (eg. inlet pres- sure, outlet flow), it is necessary to replace the purge orifice. There is one orifice in the DE3, DE4 and DE5 air dryers. The orifice is an extremely critical part in determining the perfor- mance of the dryer and no attempt should be made to enlarge or reduce the hole size. - Page 8 Wilkerson Compact Heatless Air Dryers DE3, DE4 and DE5 Parts Identification Parts Identification Figure 5 Instruction Manual / DE3, DE4 and DE5...
- Page 9 Wilkerson Compact Heatless Air Dryers PARTS DESCRIPTION – DE3, DE4 AND DE5 HEATLESS DRYERS ITEM NO. PART QTY. PER PART DESCRIPTION INCLUDES NUMBER DRYER ITEMS DRP-94-301 Desiccant Tower, New, DE3 DRP-94-302 Desiccant Tower, New, DE4 DRP-94-303 Desiccant Tower, New, DE5 DRP-94-399 Purge Solenoid Valve, 115V.
- Page 10 Wilkerson Compact Heatless Air Dryers MODELS DE3, DE4 AND DE5 TROUBLESHOOTING GUIDE PROBLEM: AIR DRYER DELIVERS WET AIR POSSIBLE CAUSE CHECK CORRECTIVE ACTION No power to unit. On/off switch or power supply. Correct power problem. High inlet air temperature. Inlet air temperature should not Reduce inlet air temperature.
- Page 11 Wilkerson Compact Heatless Air Dryers MODELS DE3, DE4 AND DE5 TROUBLESHOOTING GUIDE PROBLEM: RESTRICTED FLOW THROUGH UNIT POSSIBLE CAUSE CHECK CORRECTIVE ACTION Improper operating conditions. See A2, A3, A4 above. Dirty or obstructed inlet air See A5 above. filter. Plugged air passages.
- Page 12 Wilkerson Compact Heatless Air Dryers MODELS DE3, DE4 AND DE5 TROUBLESHOOTING GUIDE PROBLEM: EXCESSIVE PURGE / BLOWDOWN POSSIBLE CAUSE CHECK CORRECTIVE ACTION Inlet or outlet shuttle not Verify nameplate specifications vs. Line pressure too low at inlet: shifting. actual operating parameters.
- Page 13 Wilkerson Compact Heatless Air Dryers MODELS DE3, DE4 AND DE5 TROUBLESHOOTING GUIDE PROBLEM: ALARM WILL NOT CLEAR POSSIBLE CAUSE CHECK CORRECTIVE ACTION Wet air condition not corrected. See Section "A" of Troubleshooting Guide. Sensor not dried out. Allow several minutes for...
- Page 14 Wilkerson Compact Heatless Air Dryers MODELS DE3, DE4 AND DE5 TROUBLESHOOTING GUIDE PROBLEM: NO ALARM DURING WET AIR CONDITION POSSIBLE CAUSE CHECK CORRECTIVE ACTION No power to humidistat With voltmeter, check for line Make sure there is power to board.
- Page 15 Wilkerson Compact Heatless Air Dryers MODELS DE3, DE4 AND DE5 TROUBLESHOOTING GUIDE PROBLEM: SHUTTLE VAL VE NOT FUNCTIONING PROPERLY POSSIBLE CAUSE CHECK CORRECTIVE ACTION No power to shutoff With power on, disconnect If voltage at #17 and #18, and solenoid valve.
- Page 16 Wilkerson Compact Heatless Air Dryers Instruction Manual / DE3, DE4 and DE5 83-919-000-FL 6/98...
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