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Section 2: General Description
General Description
This manual is valid for the following dryer models
ACC 46
ACC 56
ACC 75
ACC 90
ACC 110
Function of the Dryer
The dryer is designed to provide a smooth, controlled and uninterrupted
delivery of dry compressed air. Wet air passes through a pre-filter and travels
down to the bottom valve assembly. The air is then fed through the bottom
of the desiccant bed and moves through the high performance desiccant
until it becomes dry. On exit from the desiccant cartridge, the air is passed
through the outlet valve assembly.
During this process, the dryer control system cycles the process air between
the two desiccant towers. While one tower is on stream removing
water vapor, the other is being carefully depressurized in preparation for
regeneration. The desiccant bed is regenerated by expanding a small amount
of dry process air, or purge air, through the saturated desiccant.
Purge air passes to atmosphere through the silencer, which is fitted to an
exhaust valve. The tower is then repressurized, with the control system
assuring each tower is at full operational pressure prior to changeover.
This ensures a reliable and efficient operation. The air stream is switched and
the cycle repeats on a continuous basis.
7
Figure 2.1: Digital Display Controller
Controller Options
Standard Running Mode
Hours Run 1234
Service History # 0
Features:
• PLC based design.
• 115-240 VAC, 50-60 Hz or 24 VDC.
• Energy Management Feature (EM).
• Alarm Outputs.
Desiccant Cartridge Options:
Standard / Medical Cartridge:
• Standard default cartridge option.
• Non oxygen depleting.
• Capable of supporting outlet dewpoint levels of -4°F, -22°F & -40°F
(-20°C, -30°C & -40°C) with appropriate sizing per factors provided on
page 12.
High Performance Cartridge:
• Capable of supporting outlet dewpoint levels of -4°F, -22°F, -40°F, -94°F
& -100°F (-20°C, -30°C, -40°C, -70°C & -74°C) with appropriate sizing per
factors provided on page 12.
Heatless Desiccant Dryers |
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Instruction Manual
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