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- Ingersoll Rand
- 47588443001 49007941
- Pre-Filter Pad
- USA
- 350 × 20 × 250 mm
- 0.25 kg
- Xiamen, China
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Product Overview
The Ingersoll Rand 47588443001 49007941 Pre-Filter Pad is an intake pre-filtration component for compatible rotary screw air compressors. Installed ahead of the main air filter, the pad captures a portion of the airborne dust and larger particles entering the compressor enclosure, helping reduce the contamination load on the downstream filtration stage.
In industrial environments, compressor intake air may contain dust, fibers, and other particles generated by manufacturing processes. If these contaminants accumulate in the main air filter, airflow resistance can increase and maintenance intervals may shorten. A pre-filter pad provides an additional filtration stage before air reaches the primary filter element.
Part number 49007941 is identified in Ingersoll Rand parts catalogs as a pre-filter pad or pre-filtration sponge for air intake applications. It is listed for RS30i and RS37 rotary screw compressor configurations, including specified versions with an integrated dryer. The pad is intended for the intake enclosure rather than the compressor’s oil circuit.
The material allows air to pass through while retaining a portion of the particulate matter carried by the intake airflow. As dust accumulates, the pad gradually becomes more restrictive. Regular inspection helps identify when contamination, deterioration, or damage could affect airflow or allow particles to bypass the intended filtration surface.
The pre-filter and main air filter perform complementary functions. The pad provides preliminary filtration, while the main filter handles the subsequent intake filtration stage. Replacing a worn or heavily contaminated pad helps maintain this arrangement, but it does not eliminate the need to service the main air filter separately.
For maintenance planning, the 49007941 reference identifies the specific pre-filter component used in compatible compressor intake assemblies. Its role is straightforward but important: reduce the amount of airborne contamination reaching the main filter while preserving the intended intake airflow.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Ingersoll Rand |
| Model Reference | 47588443001 |
| Part Number | 49007941 |
| Product Name | Pre-Filter Pad |
| Product Type | Intake Pre-Filter Sponge |
| Product Category | Rotary Screw Air Compressor Spare Part |
| Primary Function | Captures airborne particles before the main intake filter |
| Filtration Stage | Intake pre-filtration |
| Filter Material | Sponge-type filter medium |
| Installation Location | Compressor intake enclosure |
| Compatible Equipment | Ingersoll Rand RS30i and RS37 compressor configurations |
| Dimensions | 350 × 20 × 250 mm |
| Weight | 0.25 kg |
Product Features
- Preliminary air filtration: Captures airborne particles before they reach the main intake filter.
- Sponge-type filter medium: Provides a porous filtration surface for the intake pre-filter assembly.
- Dedicated part identification: Uses part number 49007941 for maintenance records and spare-parts inventory.
- Main filter support: Helps reduce the amount of particulate contamination reaching the primary air filter.
- Intake enclosure installation: Fits the designated pre-filter arrangement in compatible compressor configurations.
- RS30i and RS37 applications: Associated with specified Ingersoll Rand rotary screw compressor models.
- Integrated dryer compatibility: Listed for applicable Total Air System versions as well as non-dryer configurations.
- Routine maintenance access: Can be inspected and replaced during intake-system servicing.
- Contamination control: Helps reduce the entry of airborne debris into the compressor intake path.
- Airflow maintenance: Supports the intended intake flow when clean, undamaged, and correctly seated.
Working Principle
The 49007941 Pre-Filter Pad uses a porous sponge-type medium to intercept airborne particles as intake air passes through the compressor enclosure. Air continues toward the main filter, while a portion of the carried dust and debris remains trapped in the pad.
Ambient Air → Pre-Filter Pad → Main Air Filter → Compressor Intake → Rotary Screw Air End
During compressor operation, the intake system draws air through the pre-filter pad. The medium captures particles before the air reaches the main filter, reducing the particulate load on the downstream element.
As the pad accumulates dust, its resistance to airflow can increase. If contamination becomes excessive, the intake path may become more restrictive. The effect depends on the amount of accumulated material, the surrounding environment, and the compressor’s operating demand.
The pad must also remain correctly positioned within its housing. Tears, deformation, or gaps around the seating area can create a bypass path through which contaminated air reaches the main filter without passing through the intended pre-filtration surface.
Replacing a loaded or damaged pad restores the preliminary filtration stage when the intake housing remains in good condition. The main air filter should be assessed separately because it continues to perform the primary intake filtration function. If intake restriction persists after pad replacement, the downstream filter and other intake components should also be examined.
Role in an Ingersoll Rand Compressor System
The 49007941 Pre-Filter Pad sits at the front of the compressor’s intake filtration arrangement. It reduces the initial particulate load before air passes through the main filter and enters the compression system.
Compressor Enclosure Intake → 49007941 Pre-Filter Pad → Main Air Filter → Intake Valve → Compressor Air End
| System Component | Function |
|---|---|
| Ingersoll Rand 49007941 Pre-Filter Pad | Captures airborne particles at the preliminary filtration stage |
| Intake Enclosure | Directs incoming air through the pre-filter arrangement |
| Main Air Filter | Provides the primary intake filtration stage |
| Intake Valve | Controls air admission into the compressor |
| Rotary Screw Air End | Compresses incoming air |
| Compressor Oil Circuit | Supplies lubricant for sealing, lubrication, and heat transfer in oil-injected designs |
| Coolant Filter | Removes contaminants from circulating compressor lubricant |
| Air/Oil Separator | Separates entrained oil from compressed air |
| Filter Inspection Schedule | Establishes inspection and replacement intervals for intake filtration components |
Industrial Applications
| Application | Typical Use |
|---|---|
| Manufacturing Plants | Reducing airborne dust entering compressor intake systems |
| Automotive Production | Supporting intake filtration in compressed-air utility installations |
| Metalworking Facilities | Capturing workshop particles before they reach the main air filter |
| Packaging Lines | Managing dust and fibers around compressor intake enclosures |
| Industrial Utility Rooms | Maintaining pre-filtration in compressor installations |
| Central Compressed Air Systems | Reducing the particulate load on downstream intake filters |
| Continuous-Operation Facilities | Including pre-filter inspection in scheduled maintenance |
| Equipment Service Workshops | Replacing damaged or heavily loaded intake pads |
| RS30i Compressor Installations | Maintaining compatible intake pre-filter arrangements |
| RS37 Compressor Installations | Supporting preliminary air filtration in specified compressor configurations |
Installation and Maintenance
- Verify the part number: Identify the required pre-filter pad as Ingersoll Rand 49007941.
- Prepare the compressor: Stop the machine, isolate the electrical supply, and follow the site’s lockout and tagout procedure.
- Open the intake enclosure: Access the pre-filter arrangement according to the compressor maintenance procedure.
- Inspect the existing pad: Look for dust accumulation, tears, deformation, or deterioration of the filter medium.
- Remove the used pad: Handle the element carefully to avoid releasing accumulated dust into the downstream intake passage.
- Clean the supporting frame: Remove loose debris from the intake enclosure and the pad seating surfaces.
- Inspect the housing: Check for damage or contamination that could prevent the replacement pad from seating correctly.
- Install the replacement pad: Position the pad across the intended intake area in the designated mounting arrangement.
- Check the seating: Confirm that the pad lies evenly against its support and that no obvious gaps permit bypass airflow.
- Inspect the main air filter: Check the downstream element for contamination or restriction as part of the same service task.
- Secure the intake enclosure: Refit the cover and associated components before returning the compressor to service.
- Record the maintenance: Document the replacement part number, operating hours, pad condition, and any intake contamination observed.
Related Components
| Component | Function |
|---|---|
| Ingersoll Rand 49007941 Pre-Filter Pad | Provides preliminary intake air filtration |
| Intake Enclosure | Houses the pre-filter and directs incoming airflow |
| Main Air Filter Element | Removes additional airborne contaminants before compression |
| Intake Valve Assembly | Regulates air admission into the compressor |
| Filter Housing Seal | Helps prevent contaminated air from bypassing the filtration arrangement |
| Ingersoll Rand 48958201 Air Filter | Provides intake air filtration in compatible compressor applications |
| Ingersoll Rand 23487457 Air Filter | Serves as an intake filter in specified compressor configurations |
| Ingersoll Rand 23523772 Filter Pad | Provides pre-filtration in compatible R-Series intake assemblies |
| Ingersoll Rand 23424922 Coolant Filter | Filters contaminants from circulating compressor lubricant |
| Air/Oil Separator Element | Removes entrained oil from compressed air |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Ingersoll Rand 49007941 | Pre-Filter Pad | Preliminary intake filtration for compatible compressor configurations |
| Ingersoll Rand RS30i | Rotary Screw Air Compressor | Industrial compressed-air generation |
| Ingersoll Rand RS30n | Rotary Screw Air Compressor | Industrial compressed-air generation |
| Ingersoll Rand RS37i | Rotary Screw Air Compressor | Industrial compressed-air generation |
| Ingersoll Rand RS37n | Rotary Screw Air Compressor | Industrial compressed-air generation |
| Ingersoll Rand 48958201 | Air Filter Element | Intake filtration in compatible compressor systems |
| Ingersoll Rand 23487457 | Air Filter | Intake filtration in specified compressor applications |
| Ingersoll Rand 23523772 | Filter Pad | Preliminary filtration in compatible R-Series intake assemblies |
Key Advantages
- Captures airborne particles before they reach the main intake filter.
- Helps reduce particulate loading on the primary filtration element.
- Supports intake maintenance in compatible RS30i and RS37 compressor installations.
- Provides a dedicated part number for replacement planning.
- Helps maintain the intended intake filtration path when properly installed.
Technical FAQs
How does the 49007941 pre-filter differ from the main air filter?
The 49007941 pad provides preliminary filtration at the intake enclosure. The main air filter performs the subsequent filtration stage before air reaches the compressor air end. Both components have separate maintenance requirements.
Which Ingersoll Rand compressor models use the 49007941 pad?
The part is listed for specified RS30i and RS37 compressor configurations, including applicable versions with an integrated dryer. It serves the intake pre-filtration arrangement rather than the oil circuit.
What happens if the pre-filter pad becomes heavily contaminated?
Accumulated dust can increase airflow resistance and reduce the effectiveness of the intake arrangement. A damaged or poorly seated pad may also allow contaminants to bypass the intended filtration surface.
Why should the intake housing be cleaned during pad replacement?
Dust left in the housing can enter the clean side of the intake system when the compressor restarts. Cleaning the support and seating surfaces also helps the replacement pad fit correctly and reduces the chance of bypass airflow.