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Pneumatic Products CBP desiccant dryers are designed for plant
and instrument air applications where low dew points are
required. The CBP Series dryer operates on a standard 8 hour
fully automatic Cycle. During this continuous process, one
tower is drying incoming wet air for 4 hours. During the same
time period the other tower is being reactivated with heated
atmospheric air. Heating of the atmospheric air is external to the
tower and is controlled by a thermocouple at the heater outlet.
No internal or embedded heaters are used. No cooling water or
process purge air is required.
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Featured Components
Energy Management System
Safety Features
Flow Schematic
A positive displacement blower
provides the regeneration purge for
the system. This blower has the
major advantage of providing a
constant volume of purge air over a
wide range of pressures. The positive
displacement blower delivers a precise flow rate regardless of
varying system pressure drop while using only the horsepower
Low wattage heater tubes
High temperature protection.
The CBP Series dryer also has available an optional energy saving
control system that senses the relative humidity of the process air
as it exits the tower. Extended drying will take place if the relative
humidity is below the calculated set point.
Models 1500
through
15000 scfm
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Regenerative Desiccant Compressed Air Dryer
Valves
High performance butterfly valves control the flow
of air through the towers. Inlet and purge exhaust
valves have cast-iron bodies with stainless steel
internals which provide good wear resistance and
minimize maintenance.
Heater
The CBP Series dryer is designed to use a low watt density
heater with optimal surface area. Low watt density heaters
mean lower heater sheath temperatures and extended heater
life. Extended surface areas result in
the most efficient heat transfer.
Blower
Thermostatically controlled heater
Control power transformer
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DDCM Fiber Optic Controls
Features:
All dryer functions are controlled automatically by the Digital Diagnostic Controls and
Monitor. The DDCM is designed using the latest in fiber optic microprocessor
technology. Its electronic circuitry provides reliable operation even where electrical
noise, high temperatures and unreliable power exist.
Backlit alphanumeric four line, 80 character LCD
display to indicate set points, operating
conditions, alarms and service phone number
LCD capable of displaying in English and
Spanish
RS-232 communication port
Fiber optic emitter output
3 front panel LEDs for alarm, warning and
service
8-button keypad for retrieving diagnostic
information and programming
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LCD Information Display:
Warnings:
Inlet fail (right and left chambers)
Online pressure (right and left chambers)
Depressurization failure (right and left chambers)
Repressurization failure (right and left chambers)
Thermocouple failure
Blower motor overload
Heater over temperature (optional)
Heat timed out (right and left chambers)
High humidity (with optional energy management)
Left and right chamber temperature
Heater outlet temperature
Heater bundle temperature
Purge exhaust temperature
Left and right chamber pressure (high and low)
Alarm and warning history
Run time, current drying time and current heating time
LED test
Filter, valve and desiccant service due
Temperature scale selection (°F/°C)
Communication baud rate
Options enabled/disabled
Language selection (English/Spanish)
Purge air exhaust temperature
Tower bed temperatures
Tower status - Drying
- Depressurizing
- Regenerating
- Repressurizing
- Standby
Desiccant Dryer
1 Model number is flow rate in scfm at 100°F and 100 psig. For larger flows consult factory.
2 Desiccant shipped separately. Dryer weight does not include desiccant.
(Max.)
C
(Max.)
B
Heater
Lifting Lug
Desiccant Fill Port
Heater Housing
Right Chamber
Thermocouple
Left Chamber
Thermocouple
Moisture Indicator
Control Panel
Control / Hi Tension
Enclosure
Control Valve
Assembly
Pilot Gas Filter
Desiccant Drain Port
Left Chamber
Pressure Gauge
Right Chamber
Pressure Gauge
Dryer Side View Shown with Right Chamber Removed
Chamber Relief Valve
Purge Exhaust Thermocouple
Exhaust Switching Valve
Inlet Switching Valve
Insulation
Purge Pressure Gauge
Purge Blower
Purge Blower Motor
Repressurization Valve
Center of
Dryer Inlet
Connection
(“E” CLS150
RF Flange)
Center of
Dryer Outlet
Connection
(“D” CLS150
RF Flange)
Heater Outlet Thermocouple
Purge Inlet Filter Silencer
Depressurization Valve
Chamber Blow Down Valve
(Max.)
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