Product Overview

The Ingersoll Rand 47588445001 49007941 Pre-Filter Pad is a replacement filtration component used in compatible RS30–RS37 rotary screw compressor assemblies. Its primary function is to capture airborne dust and larger particles before cooling air enters the compressor cabinet.

In an industrial compressor room, the enclosure cooling system is exposed to the surrounding environment. Dust from production lines, packaging materials, workshop debris, and general airborne contamination can gradually accumulate around air passages and internal equipment. The pre-filter pad provides an initial filtration stage that helps reduce this particle load before the air moves farther into the cabinet.

The 49007941 is associated with the intake pre-filter assembly used on selected Ingersoll Rand RS30i, RS30n, RS37i, and RS37n compressors. It is also listed for applicable configurations with an integrated dryer. In these installations, the compressor pre-filter and dryer pre-filter are separate components: the 49007941 serves the compressor-side assembly, while the 49007966 is identified as the dryer pre-filter.

For maintenance teams, this distinction matters when servicing a Total Air System (TAS) package. Replacing the correct pad helps preserve the intended airflow path through the enclosure and avoids confusing two visually similar filtration components with different installation positions.

The pre-filter is a passive consumable component. Its condition depends on the amount of dust in the surrounding environment, the operating hours of the compressor, and the maintenance history of the intake assembly.

Technical Specifications

Product Features

• Compressor cabinet pre-filtration: Captures airborne particles before cooling air enters the compressor enclosure.
• Application-specific replacement: Identified for compatible RS30–RS37 compressor assemblies.
• Passive filtration: Operates through airflow without an electrical connection or control signal.
• Support for enclosure cleanliness: Helps limit the amount of coarse dust carried into the cabinet.
• Separate compressor and dryer filtration: The 49007941 and 49007966 references distinguish the respective pre-filter positions.
• Routine serviceability: Can be inspected during scheduled compressor maintenance.
• Panel-mounted arrangement: Fits within the associated pre-filter assembly rather than functioning as a standalone air treatment unit.

Working Principle

The 49007941 Pre-Filter Pad works by intercepting airborne particles as cooling air passes through the compressor’s pre-filter assembly. The pad acts as an initial barrier, retaining a portion of the dust and larger contaminants carried by the incoming air.

The basic airflow arrangement is:

Ambient Air → Pre-Filter Assembly → Compressor Cabinet Cooling Air Path → Internal Components

As the compressor operates, cooling air moves through the enclosure’s designated air passages. The pad reduces the amount of coarse contamination that can travel with this airflow into the cabinet. It does not generate airflow, control temperature, or regulate compressor pressure; those functions depend on the compressor’s ventilation arrangement and control system.

Over time, accumulated dust can obstruct the filter material and increase resistance to airflow. The extent of this effect depends on the operating environment and the condition of the pad. A damaged pad or one that no longer fits correctly may also allow air to bypass the intended filtration surface.

During maintenance, the filter should therefore be assessed for contamination, tears, deformation, and correct seating. If dust accumulates unusually quickly, the surrounding environment and the complete intake assembly should also be examined.

Role in the Compressor Cooling Air System

The 49007941 occupies the pre-filtration position in the compressor cabinet’s cooling-air arrangement. It helps limit the entry of airborne particles before cooling air reaches the internal equipment.

Ambient Air → 49007941 Pre-Filter Pad → Compressor Cabinet → Cooling Air Path

On a compressor package with an integrated dryer, the compressor-side and dryer-side filtration components must be identified separately. The 49007941 should not be treated as an automatic substitute for the 49007966 merely because both parts are described as pre-filter pads.

Industrial Applications

Installation and Maintenance

1. Verify the complete part reference: Confirm 47588445001 / 49007941 against the existing component identification and the applicable compressor parts list.
2. Identify the installed compressor model: Check whether the equipment is an RS30i, RS30n, RS37i, RS37n, or another configuration covered by the relevant parts documentation.
3. Distinguish compressor and dryer filters: Identify the compressor-side pad separately from the 49007966 dryer pre-filter before removing either component.
4. Isolate the compressor: Follow the equipment’s shutdown and isolation procedure before opening the intake panel or accessing internal components.
5. Inspect the existing pad: Look for accumulated dust, tears, deformation, and other signs that could affect filtration or airflow.
6. Check the intake assembly: Examine the grille, door, retaining hardware, and surrounding surfaces for damage or contamination.
7. Clean the surrounding area: Remove loose dust and debris without pushing contamination farther into the cabinet.
8. Fit the replacement correctly: Position the pad within the designated pre-filter assembly, ensuring that the intended filtration area is covered.
9. Avoid gaps and deformation: Confirm that the material is seated properly and is not folded, damaged, or trapped by the retaining components.
10. Inspect the ventilation path: Check for additional obstructions that could restrict cooling air even after the pad has been replaced.
11. Adjust inspection frequency to site conditions: Dust-intensive environments may require more frequent checks than clean operating areas. Follow the applicable service schedule and assess actual filter condition.
12. Record the maintenance work: Document the part reference, service date, observed contamination, and any damage found in the intake assembly.

Compatible System Components

Recommended Related Models

Key Advantages

• Captures coarse airborne contamination before it enters the compressor cabinet.
• Supports the cooling-air filtration arrangement of compatible RS30–RS37 compressors.
• Uses passive filtration without a separate power or control connection.
• Can be inspected as part of routine compressor maintenance.
• Has a distinct part reference from the dryer-side pre-filter, helping prevent component mix-ups during servicing.

Technical FAQs

Does the 49007941 filter compressed air or compressor cooling air?

The 49007941 is a compressor cabinet pre-filter associated with the cooling-air intake arrangement. It is not the main process-air filter element responsible for filtering air entering the compression process.

Why is the 49007966 listed separately from the 49007941?

The two references correspond to different positions in applicable compressor assemblies. The 49007941 is the compressor-side pre-filter, while the 49007966 is identified as the dryer pre-filter in configurations equipped with an integrated dryer.

Which RS30–RS37 compressor configurations use the 49007941?

The part is listed for selected RS30i, RS30n, RS37i, and RS37n configurations, including applicable Total Air System versions. The exact equipment configuration should be checked before replacement because intake assemblies can differ.

What should be checked if the compressor cabinet continues to accumulate dust after the pad is replaced?

Inspect the pad’s seating, the intake grille, the retaining hardware, and the surrounding panel for gaps or damage. Also examine the ventilation path and operating environment. A correctly installed pre-filter cannot prevent all fine particles from entering the enclosure.