Description
Chicago Pneumatic CPXHT100 (H4) 100 SCFM High-Temperature Refrigerated Air Dryer, 3/4" NPT, 115V/1Ph - PN 4102003871
High-Temperature Compressed-Air Drying for 25 HP Reciprocating Compressor Systems
The Chicago Pneumatic CPXHT100 High-Temperature Refrigerated Air Dryer, part number 4102003871, is designed to remove moisture from compressed-air systems operating with elevated inlet-air temperatures.
Rated for 100 SCFM at 100 PSIG, the CPXHT100 is an excellent match for many 25 HP reciprocating air compressors. Its high-temperature design accepts inlet air up to 180°F, allowing the package to handle hot compressor discharge air without requiring a separately installed aftercooler in properly sized applications.
The CPXHT100 combines an air-cooled aftercooler, refrigerated air dryer, moisture separator, and electronic condensate drain into one compact package. Hot compressed air is cooled, causing water vapor to condense into liquid. The internal separator removes that moisture from the airflow, and the electronic drain automatically discharges the collected condensate.
With a pressure dew point of approximately 50°F ± 2°F, the CPXHT100 helps reduce liquid water in compressed-air piping while protecting pneumatic tools, cylinders, valves, production equipment, paint systems, and finished products from moisture-related problems.
The dryer operates on standard 115-volt single-phase power and uses 3/4-inch NPT inlet and outlet connections, simplifying installation in automotive facilities, maintenance departments, fabrication shops, woodworking operations, and light-industrial applications.
Manufacturer Part Number: 4102003871
Key Features and Benefits
100 SCFM Rated Capacity
The CPXHT100 is rated for 100 SCFM at 100 PSIG, making it suitable for many 25 HP reciprocating air compressor systems.
Actual dryer capacity depends on:
- Compressed-air inlet temperature
- Ambient temperature
- Operating pressure
- Airflow demand
- Required pressure dew point
Handles Inlet Temperatures Up to 180°F
The CPXHT100 is specifically designed to handle the elevated discharge temperatures commonly produced by reciprocating air compressors.
Its high-temperature design allows it to accept inlet air up to 180°F, helping eliminate the need for a separately installed aftercooler in properly sized applications.
Integrated Air-Cooled Aftercooler
The built-in aftercooler reduces the temperature of the incoming compressed air before it reaches the refrigerated drying circuit.
Cooling the air causes a significant portion of the water vapor to condense, allowing the internal moisture separator and drain to remove it from the system.
50°F Pressure Dew Point
The dryer provides a pressure dew point of approximately 50°F ± 2°F, helping reduce liquid-water formation in downstream piping and equipment.
Integrated Moisture Separator
The built-in moisture separator removes condensed water from the compressed-air stream after the air has been cooled.
Electronic Condensate Drain
An integrated electronic drain automatically discharges collected condensate, reducing manual maintenance and helping prevent water from accumulating inside the dryer.
Stainless Steel and Copper Heat Exchanger
The stainless steel and copper heat exchanger provides dependable thermal transfer while supporting efficient cooling and long-term operation.
115V Single-Phase Power
The CPXHT100 operates on 115V single-phase, 60 Hz electrical power, eliminating the need for specialized three-phase electrical service.
3/4-Inch NPT Connections
The dryer uses 3/4-inch NPT inlet and outlet connections, simplifying connection to appropriately sized compressed-air piping.
Maximum Working Pressure of 232 PSIG
The CPXHT100 is rated for compressed-air systems operating at pressures up to 232 PSIG.
Compact Enclosed Design
Measuring approximately 18 inches long, 23 inches wide, and 41 inches high, the CPXHT100 delivers substantial drying capacity without consuming excessive floor space.
Quiet Operation
The internal layout and enclosed cabinet help reduce operating noise, allowing installation closer to active work areas when proper ventilation is provided.
Helps Protect Pneumatic Equipment
Removing moisture from compressed air helps protect:
- Pneumatic tools
- Air cylinders
- Impact tools
- Tire-service equipment
- Paint equipment
- Regulators and control valves
- Production machinery
- Automation components
- Compressed-air piping
Helps Improve Finished Product Quality
Dry compressed air can help reduce moisture-related problems in painting, finishing, fabrication, woodworking, assembly, packaging, and manufacturing applications.
Standard Features
- 100 SCFM rated airflow at 100 PSIG
- Designed for many 25 HP reciprocating compressors
- Maximum inlet-air temperature of 180°F
- 50°F pressure dew point, ±2°F
- Maximum working pressure of 232 PSIG
- 115V single-phase electrical power
- 60 Hz operation
- 3/4-inch NPT inlet and outlet connections
- Integrated air-cooled aftercooler
- Refrigerated air dryer
- Stainless steel and copper heat exchanger
- Built-in moisture separator
- Electronic condensate drain
- Compact enclosed cabinet
- Air-cooled refrigeration system
- R-404A refrigerant
- Quiet internal layout
- Designed for hot compressor discharge air
- Simplified installation and maintenance
- Minimum ambient temperature of 41°F
- Maximum ambient temperature of 113°F
Technical Specifications
| Specification |
Details |
| Manufacturer |
Chicago Pneumatic |
| Model |
CPXHT100 (H4) |
| Manufacturer Part Number |
4102003871 |
| Dryer Type |
High-temperature refrigerated air dryer |
| Rated Airflow |
100 SCFM |
| Rated Flow Conditions |
100 PSIG |
| Recommended Compressor Size |
25 HP |
| Pressure Dew Point |
50°F ± 2°F |
| Maximum Inlet-Air Temperature |
180°F |
| Minimum Ambient Temperature |
41°F |
| Maximum Ambient Temperature |
113°F |
| Maximum Working Pressure |
232 PSIG |
| Air Inlet Connection |
3/4-inch NPT |
| Air Outlet Connection |
3/4-inch NPT |
| Voltage |
115V |
| Phase |
Single phase |
| Frequency |
60 Hz |
| Heat Exchanger |
Stainless steel and copper |
| Integrated Aftercooler |
Yes |
| Moisture Separator |
Included |
| Electronic Condensate Drain |
Included |
| Refrigerant |
R-404A |
| Approximate Length |
18 inches |
| Approximate Width |
23 inches |
| Approximate Height |
41 inches |
| Approximate Weight |
231 pounds |
Recommended Applications
The Chicago Pneumatic CPXHT100 is well suited for:
- Automotive repair shops
- Collision repair and body shops
- Tire-service facilities
- Fleet-maintenance departments
- Metal fabrication shops
- Woodworking and cabinet shops
- Maintenance departments
- Manufacturing facilities
- Paint and finishing operations
- Pneumatic assembly equipment
- Air-operated production tools
- Commercial garages
- Packaging equipment
- Plastics-processing operations
- Small production facilities
- Reciprocating air compressor systems
- 25 HP compressor applications
- Facilities without a separate compressor aftercooler
The dryer should be sized according to the compressor’s actual airflow, operating pressure, inlet-air temperature, ambient temperature, and required air quality.
Why Choose a High-Temperature Refrigerated Air Dryer?
Compressed air leaving a reciprocating compressor can be extremely hot. A conventional refrigerated air dryer may not be designed to accept this elevated temperature without a separate aftercooler.
The CPXHT100 combines an air-cooled aftercooler and refrigerated dryer into one package, allowing it to accept inlet-air temperatures up to 180°F.
Potential advantages include:
- Eliminates the need for a separate aftercooler in properly sized applications
- Reduces installation complexity
- Saves valuable floor space
- Reduces external piping requirements
- Automatically removes condensed moisture
- Helps protect downstream equipment
- Reduces water accumulation in air lines
- Reduces manual air-line purging
- Supports more consistent compressed-air quality
- Helps reduce moisture-related maintenance
- Helps minimize production downtime
How the CPXHT100 Works
Stage 1: Hot Compressed Air Enters the Dryer
Hot compressed air enters the CPXHT100 through the 3/4-inch NPT inlet.
Stage 2: The Integrated Aftercooler Reduces Air Temperature
The built-in air-cooled aftercooler reduces the temperature of the incoming compressed air. As the air cools, water vapor begins to condense into liquid.
Stage 3: The Refrigerated Dryer Further Cools the Air
The refrigerated drying circuit lowers the air temperature further, allowing additional moisture to condense.
Stage 4: Condensed Moisture Is Separated
The integrated moisture separator removes liquid water from the compressed-air stream.
Stage 5: Condensate Is Automatically Discharged
The electronic condensate drain removes collected moisture without requiring routine manual draining.
Stage 6: Drier Air Enters the Distribution System
The treated compressed air exits the dryer and enters the facility’s compressed-air piping system.
Benefits of Dry Compressed Air
Atmospheric air naturally contains water vapor. When air is compressed, that moisture becomes concentrated. As the compressed air cools inside the receiver tank and distribution piping, the water vapor can condense into liquid.
Excessive moisture can contribute to:
- Internal piping corrosion
- Damaged pneumatic tools
- Sticking air cylinders
- Rust inside air receivers and piping
- Contaminated paint finishes
- Fisheye paint defects
- Damaged regulators and valves
- Increased equipment maintenance
- Reduced production quality
- Frozen outdoor air lines
- Unplanned downtime
The CPXHT100 cools the compressed air, separates condensed moisture, and automatically discharges the collected water.
Air Treatment Recommendations
A refrigerated air dryer primarily removes water vapor and condensed moisture. Some applications may require additional air treatment for particulate contamination, fine oil aerosols, odors, or other contaminants.
Depending on the application, the compressed-air system may also require:
- Automatic receiver-tank drain
- General-purpose particulate filter
- High-efficiency coalescing filter
- Activated-carbon filter
- Pressure regulator
- Oil-water separator
- Point-of-use air treatment
Paint spraying, instrumentation, automation systems, and sensitive production applications may require additional treatment beyond a refrigerated air dryer.
Dryer Sizing Considerations
The CPXHT100 is rated for 100 SCFM at 100 PSIG under the manufacturer’s reference conditions.
Dryer capacity may decrease when:
- Inlet-air temperature increases
- Ambient temperature increases
- Operating pressure decreases
- Airflow demand increases
- Compressor discharge temperature exceeds the rated limit
The dryer should be selected according to the most demanding expected operating conditions rather than only the compressor’s nominal horsepower.
A 25 HP compressor may produce more or less than 100 SCFM depending on the compressor design, operating pressure, pump speed, and efficiency.
Installation Considerations
The CPXHT100 should be installed indoors in a clean, well-ventilated location with adequate room for inspection and maintenance.
Before installation:
- Confirm that system airflow does not exceed the dryer’s 100 SCFM rated capacity.
- Verify that the dryer is suitable for the compressor’s actual inlet-air temperature.
- Confirm that operating pressure does not exceed 232 PSIG.
- Confirm that ambient temperature remains between 41°F and 113°F.
- Provide a 115V single-phase, 60 Hz electrical supply.
- Verify that the electrical circuit meets the dryer’s nameplate requirements.
- Use properly sized compressed-air piping.
- Confirm the correct compressed-air flow direction.
- Keep the condenser and ventilation openings clear.
- Prevent heated exhaust air from recirculating into the dryer.
- Route the electronic drain discharge to an approved condensate collection or treatment system.
- Provide isolation valves to simplify future maintenance.
- Consider installing a bypass line so the dryer can be serviced without shutting down the entire compressed-air system.
- Avoid unnecessary piping restrictions at the inlet and outlet.
- Support external piping so its weight is not carried by the dryer connections.
- Maintain the manufacturer’s recommended service clearances.
- Check the compressed-air system for leaks after installation.
- Confirm proper condensate-drain operation before placing the dryer into regular service.
Installation should be completed according to the supplied operating instructions and all applicable electrical, plumbing, and safety codes.
Routine Maintenance
Routine inspection helps maintain moisture removal, cooling performance, and dependable dryer operation.
Typical maintenance includes:
- Verify that the electronic condensate drain is operating.
- Inspect the drain discharge line for restrictions.
- Keep the condenser and ventilation openings clean.
- Remove accumulated dust and debris from cooling surfaces.
- Check the dryer for unusual noise or vibration.
- Inspect compressed-air fittings for leaks.
- Verify that inlet-air temperature remains within the rated limit.
- Confirm that ambient temperature remains within the allowable range.
- Inspect electrical wiring and connections.
- Check for excessive pressure drop through the dryer.
- Keep surrounding areas free from dust, debris, and stored materials.
- Follow the maintenance instructions supplied with the unit.
Maintenance frequency can vary based on operating hours, dust levels, ambient temperature, humidity, and compressor operating conditions.
Basic Troubleshooting
Water Is Present Downstream
Check the electronic drain, drain discharge line, inlet-air temperature, airflow demand, ambient temperature, operating pressure, and dryer ventilation.
The dryer may be undersized if actual operating conditions exceed its rated capacity.
Electronic Drain Does Not Discharge
Check the drain’s electrical connection, timer or control operation, isolation valve, discharge tubing, and condensate outlet for blockages.
Dryer Does Not Start
Check the electrical outlet, disconnect, circuit protection, power connection, dryer switch, and incoming voltage.
Dryer Runs but Does Not Remove Moisture
Verify that the refrigeration system is operating, the condenser is clean, the condensate drain is functioning, and inlet conditions remain within the dryer’s rated limits.
Excessive Pressure Drop
Inspect the compressed-air piping, valves, fittings, heat exchanger, and downstream air-treatment components for restrictions.
Dryer Shuts Down or Runs Hot
Check the ambient temperature, ventilation clearance, condenser cleanliness, and whether heated exhaust air is recirculating into the dryer.
Excessive Condensate in the Air System
Confirm that the air receiver is draining properly and that the dryer is installed and sized correctly for the compressor’s airflow and discharge temperature.
Dryer Runs Continuously
Continuous operation may be normal for a non-cycling refrigerated dryer. Check the operating manual and verify that the unit is maintaining the proper dew point.
Unusual Noise or Vibration
Check for loose cabinet panels, debris near the cooling fan, improper mounting, refrigerant-compressor issues, or damaged internal components.
Refrigeration-system repairs, electrical repairs, internal pressure-system repairs, and major service should be completed by qualified personnel.
Frequently Asked Questions
What is the rated capacity of the CPXHT100?
The CPXHT100 is rated for 100 SCFM at 100 PSIG.
What is the manufacturer part number?
The manufacturer part number is 4102003871.
What makes this a high-temperature air dryer?
The CPXHT100 can accept compressed-air inlet temperatures up to 180°F and incorporates an air-cooled aftercooler into the dryer package.
What size compressor is the CPXHT100 designed for?
It is designed for many 25 HP reciprocating air compressors, provided the compressor’s actual airflow and operating conditions remain within the dryer’s rated capacity.
What pressure dew point does it provide?
The CPXHT100 provides a pressure dew point of approximately 50°F ± 2°F.
Does the CPXHT100 include an aftercooler?
Yes. The high-temperature package includes an integrated air-cooled aftercooler.
Does the dryer include a moisture separator?
Yes. The CPXHT100 includes an integrated moisture separator.
Does it include an automatic condensate drain?
Yes. The dryer includes an electronic condensate drain that automatically discharges collected moisture.
What electrical service is required?
The CPXHT100 requires 115V single-phase, 60 Hz electrical power.
What size are the air connections?
The dryer uses 3/4-inch NPT inlet and outlet connections.
What is the maximum operating pressure?
The maximum working pressure is 232 PSIG.
What is the allowable ambient-temperature range?
The dryer is designed for ambient temperatures between 41°F and 113°F.
What refrigerant does the CPXHT100 use?
The CPXHT100 uses R-404A refrigerant.
Does this dryer remove oil?
A refrigerated dryer is primarily designed to remove moisture. Additional air treatment may be required to remove fine oil aerosols, particulate contamination, or odors.
Does the CPXHT100 replace a separate aftercooler?
The integrated high-temperature design can eliminate the need for a separately installed aftercooler in properly sized applications with inlet temperatures up to 180°F.
Can this dryer be used with a rotary screw compressor?
It can, but a standard refrigerated dryer may be more appropriate when the rotary screw compressor’s discharge temperature remains within conventional dryer inlet-temperature limits.
Can this dryer be used for automotive painting?
Yes, provided it is properly sized. Paint applications may also require coalescing and point-of-use air treatment depending on the required finish quality.
Does a 25 HP compressor always produce less than 100 CFM?
No. Compressor output varies by model, operating pressure, pump speed, and design. Dryer selection should always be based on actual airflow and operating conditions.
Where should the condensate drain discharge be routed?
Condensate should be routed to an appropriate collection or oil-water separation system according to applicable regulations.
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Our team can help determine whether the Chicago Pneumatic CPXHT100 provides the correct capacity, inlet-temperature rating, operating pressure, connections, and electrical configuration for your compressed-air system.
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