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NOTICE
Those operating the machine or performing
maintenamce should read and understand the
decals positioned on the machine and the
contents of this Technical Manual.
Ensure that this Technical Manual is not
removed permanently from the machine.
TECHNICAL MANUAL
HYDRONIX
MPS Heatless Purge
Desiccant Compressed Air Dryer
20 - 60 SCFM
ZEKS Compressed Air Solutions
1302 Goshen Parkway
West Chester, PA 19380
Phone: 610-692-9100
800-888-2323
Fax:
610-692-9192
Web:
www.zeks.com
TM
TM MPS 20-60 V0116
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Summary of Contents for ZEKS HYDRONIX 20MPS
- Page 1 TECHNICAL MANUAL HYDRONIX MPS Heatless Purge Desiccant Compressed Air Dryer 20 - 60 SCFM ZEKS Compressed Air Solutions 1302 Goshen Parkway NOTICE West Chester, PA 19380 Those operating the machine or performing maintenamce should read and understand the Phone: 610-692-9100...
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Page 2: Table Of Contents
HYDRONIX MPS Heatless Purge Desiccant Compressed Air Dryer 20 - 60 SCFM SECTION CONTENT PAGE INTRODUCTION ABBREVIATED WARRANTY MPS HEATLESS PURGE DRYER NOMENCLATURE RECEIVING AND INSPECTION SAFETY AND OPERATION PRECAUTIONS PRINCIPLES OF OPERATION INSTALLATION/INITIAL START-UP SCHEDULED MAINTENANCE TROUBLESHOOTING SPARE PARTS LIST... -
Page 3: Introduction
Equipment must be installed and operated in accordance with ZEKS’ recommendations. ZEKS liability is limited to repair of, refund of purchase price paid for, or replacement in kind at ZEKS’ sole option, during the warranty time period stated above. -
Page 4: Mps Heatless Purge Dryer Nomenclature
HEATLESS DRYER NOMENCLATURE NOMINAL FLOW SCFM* TYPE / DESIGN SERIES ELECTRICAL POWER OPTIONS MPS = Small Pressure Swing 1 = 115-1-60 (150 PSIG) 3 = 115-1-60 (300 PSIG) A = Pneumatic (150 PSIG) B = Pneumatic (300 PSIG) 0 = No Options 0 = NEMA 1 (-40°) 0 = Standard 0 = No Filter Pkg... -
Page 5: Receiving And Inspection
RECEIVING AND INSPECTION INSPECTION Upon receiving your ZEKS air dryer, please inspect the unit closely. If evidence of rough handling is detected, please note it on your delivery receipt, especially if the dryer will not be uncrated immediately. Obtaining the delivery person’s signed... -
Page 6: Safety And Operation Precautions
“CAUTION”. NOTICE The user of any air dryer manufactured by ZEKS Compressed Air Solutions, is hereby warned that failure to follow the above Safety and Operation Precautions can result in personal injuries or equipment damage. However, ZEKS Compressed Air Solutions... -
Page 7: Principles Of Operation
6. PRINCIPLES OF OPERATION INTRODUCTION As described in Section 1, water vapor is removed from compressed air by diverting air flow alternately between two towers filled with desiccant. While one tower processes the compressed air stream, adsorbing water vapor, the opposite tower gets regenerated by desorbing the water vapor and venting it to atmosphere. - Page 8 N O T I C E The right tower must be the drying tower for proper purge adjustment setting. When the left tower is the drying tower, the Purge Adjustment Gauge will read close to line pressure. The purge adjustment manifold consists of the Purge Adjustment Valve, the Purge Pressure Gauge and the Purge Orifice.
- Page 9 6.7.1 TIMING CYCLE FOR -40°F DEW POINT DRYERS The standard SST timing cycle switches the Inlet Flow Valve position every five minutes which alternates the drying tower. At the same time as a tower Inlet Valve opens, the appropriate tower Purge Valve opens to depressurize the regenerating tower.
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Page 10: Installation/Initial Start-Up
N O T I C E The standard dryer is not rated for any gas other than air. Operating pressure of ZEKS dryers can range from 75 -150 PSIG. Air available for your usage will vary with operating pressure. The maximum design pressure of the ZEKS Heatless Dryer is 150 PSIG. - Page 11 FILTRATION It is important that a prefilter and an afterfilter be provided in your dryer installation. N O T I C E All dryers must have proper filtration. A .3 micron coalescing filter with automatic drain & particulate after filter must be used as a minimum. Failure to provide proper filtration for dryer will void warranty.
- Page 12 Verify that all systems are operating in their proper order and sequence. If the dryer is not functioning properly, contact distributor or ZEKS Technical Service. • Slowly pressurize the dryer. When the dryer reaches full operating pressure, check the system for air leaks.
- Page 13 • If the dryer has been in storage or off for an extended period of time, the Blue Moisture Indicator (BMI), if equipped, may appear gray, the High Humidity Light (if equipped) may be illuminated and the Dew Point Monitor (if equipped) may indicate a high dew point.
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Page 14: Scheduled Maintenance
MAINTENANCE AND SYSTEM CHECK SCHEDULED MAINTENANCE DAILY MAINTENANCE FUNCTIONS: •Check and record inlet pressure, temperature and flow. Verify that it is within specifications. •Check tower pressure gauge readings within operating tolerance. •Check operation for proper dryer cycling, depressurization and repressurization. •Check that the prefilter drain is operating properly and that there is no condensate discharged from purge mufflers. - Page 15 Prefilters and Afterfilters • Prefilters - The prefilter element must be changed as often as required to prevent contamination of the dryer's desiccant bed. The prefilter and automatic drain must be checked daily. To prolong filter element life, it is recommended that a mechanical air/moisture separator be placed immedi- ately before the prefilter.
- Page 16 For dryers equipped with Adjustable Purge, the Outlet Check Valves sealing can be verified by depressurizing the dryer and applying pressure to the outlet. The Outlet Check Valves should seal and prevent air from pressurizing the towers. If a tower begins to pressurize, the check valve on that side requires replacement.
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Page 17: Troubleshooting
TROUBLESHOOTING Refer to maintenance descriptions in Section 8 as required for trouble shooting procedures. PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Elevated dew point Insufficient purge rate. Check purge flow settings. Check purge piping for obstruction. Clean purge piping and muffler. Inlet air pressure below Check pressure source and system design condition. - Page 18 PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Dryer fails to Faulty purge valve. Check that timer circuit is not sending pressurize. a control signal. Check Purge Valve. Dryer fails to purge. Purge valve does not open. Check Purge Valve. Repair and Purge valve stuck in closed replace if necessary.
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Page 19: Spare Parts List
SPARE PARTS LIST This is a generic Parts List that is good for NEMA 1 and NEMA 4 configurations with Moisture Load Control (MLC), Fail to Shift (FTS) and High Humidity (HH). Do not use this Parts List for -80F, -100F applications. MODEL DESCRIPTION 20MPS...