Pneumatic And Hydraulic Equipment Page 640

DESICCANT AIR DRYER Operation The heatless dryer works by passing compressed air through a tower filled with desiccant. Moisture from the airstream is adsorbed onto the desiccant thereby producing extremely dry outlet air. While one tower is on-line performing the drying function, the second tower is off-line being regenerated by a portion (approx. 15%) of the discharge dry air flow. This operation is controlled by valves (V1 & V2) which divert the flow of air to the on-line tower and away from the regenerating tower. At the same time, a purge valve (V3 or V4) allows the regenerating air flow entering the off-line tower to escape and thereby purge the moisture adsorbed from the desiccant to the atmosphere. On a -40F dewpoint dryer, this process lasts for four minutes and thirty seconds, at which time repressurization of the off-line (regenerating) tower begins to prevent desiccant bed fluidization. The purge valve (V3 or V4) will close so that the off-line tower is al- lowed to repressurize. After repressurization is complete, the flow valves (V1 & V2) will divert the drying air flow to the previously off-line tower. Simultaneously, a purge valve (V3 or V4) will open allowing the previously on-line dryer tower to depressurize and begin regeneration. This will last for four minutes and thirty seconds at which point the process will again be reversed. The total cycle time is ten minutes. -40F pressure dewpoint. Performance to CAGI Standard 200 ADF 200. Basic twin tower heatless dryer with drying in one tower and regeneration in the other. Low profile design places key maintenance points at operator level for faster servicing. Upflow drying for long desiccant life. ASME coded pressure vessels with pressure relief valves Activated alumina desiccant filled in towers from factory (approx. 3-5 year life). Desiccant fill and drain ports for easy maintenance Tower cycle operation switched via electronic controller which also monitors dryer operations and is MODBUS capable for network connection. 150 PSIG maximum working pressure Purge air exhausted through exhaust mufflers to reduce noise levels. Vessel pressure gauges installed on each tower. Mounted on floor stand. Dryer on/off switch and power on light. 115/160 NEMA 1 Electrics High efficiency pre-filter and particulate afterfilter included and mounted (except 1500-1800 cfm models shipped loose). Optional EMS Energy Management System moisture load control energy saver matches purge air rate to actual moisture load during reduced or fluctuating air demand periods. -100F pressure dewpoint option Capacity ratings are based on 100 psig inlet air pressure, 100F inlet air temperature, 100% relative humidity, and 100F ambient air temperature. SCFM Dimensions @ -40F In / Out Width Depth Height Weight Model Dewpoint Connect (in.) (in.) (in.) (in.) (lbs.) HL120 120 1.0 NPT 40.5 30 63 563 HL160 160 1.5 NPT 44.5 33 66 707 HL200 200 1.5 NPT 44.5 33 66 731 HL250 250 1.5 NPT 48.5 33 67 869 HL300 300 2.0 NPT 48.5 34 67 924 HL400 400 2.0 NPT 52.5 36 68 1115 HL500 500 2.0 NPT 56.5 40 82 1564 HL600 600 2.0 NPT 56.5 40 82 1664 HL800 800 3.0 NPT 64 52 88 2017 HL1000 1000 3.0 NPT 64 52 88 2237 HL1200 1200 3.0 NPT 64 52 88 2424 HL1500 1500 4.0 FLG 78.5 55 81 2974 HL1800 1800 4.0 FLG 84 61 94 3905 Ingersoll-Rand HL Series Heatless Dual Tower Desiccant Air Dryer Larger CFM capacities available Ingersoll Rand (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j JHF Catalog [ Volume 7 ] 640 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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