PHD Series - Externally Heated Industrial Air Dryers
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E x ter na l ly Heated De s icca nt C ompr e s sed A i r D r yer s P H D  S E R I E S 3 0 0 - 3 , 2 0 0 S C F M

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STANDARD DESIGN Moist, filtered compressed air enters the pressurized on-line desiccant-filled drying Tower 1 through valve (A). Up-flow drying enables the desiccant to strip the air stream of moisture. Clean, dry compressed air exits through valve (E) to feed the air system. Tower 2 (when in regeneration mode) closes valve (B), then depressurizes to atmosphere through muffler (C). Valves (D & G) open and the heater turns on. A portion of dry compressed air (purge air) is diverted before exiting (E) and passes through the heater. Hot dry purge air desorbs the moisture from the desiccant as...

Soft-seated check valves for tight shutoff and durability Towers filled with extra, high-grade activated alumina to deliver superior performance High-quality pressure gauges display left tower, right tower, and purge pressure Function indicator LEDs for easy monitoring Easy-view vacuum fluorescent text display is visible under any condition Energy Management System advanced microprocessor- — based control Low-watt density heater saves energy and prevents premature desiccant aging Heavy-duty air intake filter Optional EMS controlled Jet Injection uses A3 Purge Technology™ to reduce purge...

OPTIONAL JET INJECTION ENERGY MANAGEMENT SYSTEM Rugged temperature- & humidity-sensing technology embedded in the EMS control ensures dew point stability without the need for periodic recalibration. Constant desiccant bed monitoring uses algorithm-based protocols to deliver precise control of the A3 Purge Technology™. The Jet Injection is engaged and disengaged as needed to boost the airflow through the off-line tower. Bed regeneration cycles are managed with precision to deliver -40°F, Class 2 dew point, and reduce compressed purge air consumption to 6% or less. MAXIMUM SAVINGS AND -40°F...

Standard Option A Option B Pressure Dew Point ISO Class 3 -4°F (-20°C) G Jet Injection - 3 3EMS Control Automatic Energy Savings — 3 3 Vacuum Fluorescent Text Digital Dew Point Monitoring — Languages English, Spanish, French Power Recovery Automatic Restart after Power Loss Dry Contacts Remote Indication of Alarm Overlay w/Circuit Graphics & LED Indicators Alarm LEDs with Text Display Tower Status - (drying switchover heat, cool, etc.) 3 TABLE 1 CORRECTION FACTORS

1 Performance data per CAGI Standard ADF 200 for Dual-Stage Regenerative Desiccant Compressed Air Dryer. Rating conditions are 100°F (37.8°C) inlet 100 psig (6.9 bar) inlet pressure, 100% relative humidity, 100°F (37.8°C) ambient temperature, and 5 psi (0.35 bar) pressure drop. * Consult factory for larger models. 2 Prefilter element type SU: Afterfilter element type HT.

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