Product Overview

The Ingersoll Rand 47588691001 39911631 Oil Filter is an oil filtration component used in industrial rotary screw air compressor lubrication systems. Its primary function is to remove particulate contaminants and debris from circulating compressor oil before the oil returns to critical operating components.

During compressor operation, lubricating oil circulates through the airend and associated cooling and lubrication passages. This oil collects contaminants generated during operation, including fine particles and mechanical wear debris. Without effective filtration, these contaminants can circulate through the lubrication circuit and contribute to premature component wear.

The 39911631 is identified as an Ingersoll Rand oil filter element. Its applications include selected EP75 and EP100 rotary screw compressors, as well as certain HP, XP, HXP, and EPE configurations. It is also listed in filtration references for several Nirvana compressor models.

The filter is installed in the compressor lubrication circuit, where it processes circulating oil before it returns to the compression system. Its filtration function supports oil cleanliness, lubrication performance, and the protection of internal mechanical components.

For maintenance engineers, selecting the correct oil filter requires attention to the compressor model, serial number, and original parts configuration. Ingersoll Rand compressor families can use different oil filter elements, even when their power ratings or general equipment descriptions are similar.

The 39911631 should therefore be identified by its complete part number and verified against the relevant compressor documentation before replacement.

Technical Specifications

Product Features

1. Compressor Oil Filtration

The 39911631 removes particles and debris from circulating compressor oil before the oil returns to the compression process. This helps maintain the cleanliness of the lubrication circuit.

2. Lubrication System Protection

By retaining contaminants within the filter media, the element helps reduce the circulation of abrasive particles through the airend, oil cooler, and associated lubrication passages.

3. Rotary Screw Compressor Application

The filter is associated with selected Ingersoll Rand rotary screw compressor configurations, including EP75 and EP100 models and certain HP, XP, HXP, and EPE machines.

4. Oil Circuit Integration

The element operates within the compressor lubrication circuit rather than the incoming air filtration system. Its function is specifically related to maintaining compressor oil cleanliness.

5. Contaminant Retention

The filtration media captures suspended particles and mechanical debris carried by the oil. This helps reduce contamination reaching downstream lubrication components.

6. Preventive Maintenance Support

The oil filter is a scheduled replacement component. Regular replacement helps maintain filtration performance and reduces the risk of excessive contaminant accumulation.

7. Airend Protection

Clean circulating oil is important for lubricating and cooling the compressor airend. Effective oil filtration helps limit the entry of contaminants into sensitive mechanical areas.

8. Dedicated Replacement Identification

The 39911631 part number provides a specific identification reference for spare-parts procurement and compressor maintenance planning.

Working Principle

The Ingersoll Rand 39911631 operates through mechanical oil filtration. Its purpose is to remove suspended contaminants from compressor oil as the lubricant circulates through the lubrication system.

During normal operation, the compressor’s lubrication circuit moves oil through the relevant mechanical and cooling components. As the oil circulates, it can collect dust, wear particles, and other contaminants generated during operation.

The circulating oil passes through the oil filter element. The filter media retains particulate contaminants while allowing filtered oil to continue through the lubrication circuit.

The cleaned oil then returns to the relevant compressor components, supporting lubrication and heat removal during continuous operation.

As the filter accumulates contaminants, its resistance to oil flow can increase. Excessive contamination can affect the lubrication circuit and should be addressed through scheduled filter replacement.

The oil filter therefore performs an essential maintenance function within the compressor lubrication arrangement. It does not replace the air filter or air-oil separator, as these components handle different filtration requirements.

Typical Filtration Sequence:

1. The compressor operates and circulates lubricating oil through its lubrication circuit.
2. Oil collects suspended contaminants during normal operation.
3. Contaminated oil enters the oil filter assembly.
4. The 39911631 filter media captures particles and debris.
5. Filtered oil continues through the lubrication passages.
6. Clean oil returns to the relevant compressor components.
7. Accumulated contaminants remain within the filter element.
8. Maintenance personnel replace the filter according to the applicable service schedule.

Role in Ingersoll Rand Compressor Lubrication Architecture

Within an Ingersoll Rand rotary screw compressor, the 39911631 serves as an oil filtration component in the lubrication circuit.

The lubrication arrangement typically includes the oil filter, oil cooler, oil separator, connecting passages, and the airend. These components work together to circulate, condition, and separate compressor oil during operation.

The oil filter removes particulate contaminants from circulating oil. The oil cooler manages lubricant temperature, while the air-oil separator performs the separation of oil from compressed air.

These components have different functions and should be maintained as separate parts of the compressor service system.

The 39911631 is documented for several Ingersoll Rand compressor configurations. Compatibility must be checked against the applicable model and serial number because different production configurations may use different filter elements.

Industrial Applications

Installation and Maintenance

1. Verify Part Number: Confirm that the replacement oil filter is identified as 39911631 and matches the original compressor parts documentation.
2. Check Compressor Model: Verify the compressor model, serial number, and lubrication system configuration before ordering the replacement.
3. Shut Down the Compressor: Stop the compressor and follow the manufacturer’s isolation procedures before beginning maintenance.
4. Relieve System Pressure: Ensure that the compressor is safely depressurized and that the oil circuit has reached a suitable maintenance condition.
5. Allow Oil to Cool: Wait until the lubricant and associated components have cooled sufficiently to avoid burns during servicing.
6. Inspect the Existing Filter: Examine the removed element for excessive contamination, damaged sealing surfaces, or other abnormal conditions.
7. Check the Filter Mounting Surface: Clean the installation area and inspect the sealing surface for damage or accumulated contaminants.
8. Prepare the Replacement Element: Confirm that the new filter matches the required installation configuration and inspect its sealing components.
9. Install the Oil Filter: Fit the replacement element according to the manufacturer’s specified installation procedure and tightening requirements.
10. Check the Lubrication Circuit: Inspect associated oil connections and surrounding components for signs of leakage or damage.
11. Verify Operating Conditions: After restarting the compressor, check for oil leakage and confirm that the lubrication system operates normally.
12. Record Maintenance Information: Document the replacement part number, operating hours, installation date, and inspection findings for future maintenance planning.

Compatible System Components

Recommended Related Models

Key Advantages

• Removes particulate contaminants from circulating compressor oil.
• Supports clean oil circulation through the lubrication system.
• Helps protect the compressor airend from abrasive particles.
• Supports lubrication and cooling system maintenance.
• Suitable for selected Ingersoll Rand rotary screw compressors.
• Associated with EP75 and EP100 compressor applications.
• Also listed for selected HP, XP, HXP, and EPE configurations.
• Helps maintain the cleanliness of the compressor lubrication circuit.
• Supports scheduled preventive maintenance.
• Dedicated replacement part identification for procurement.

Technical FAQs

1. What is the primary function of the Ingersoll Rand 39911631?

The 39911631 is an oil filter element used to remove particles and debris from circulating compressor oil. It helps maintain oil cleanliness before the lubricant returns to the compression process.

2. Which Ingersoll Rand compressor models use the 39911631?

The filter is listed for many EP75 and EP100 rotary screw compressors. Certain HP, XP, HXP, and EPE configurations also use this part number. Exact compatibility should be checked against the compressor model and serial number.

3. How often should the 39911631 oil filter be replaced?

A replacement interval of approximately 2,000 operating hours or once per year is specified in supplier maintenance information for applicable compressor configurations. The actual interval should follow the maintenance schedule for the specific compressor.

4. Can the 39911631 replace the 39911615 oil filter?

Not automatically. Both part numbers appear in Ingersoll Rand compressor oil filtration applications, but they have different configurations and may be used on different compressor variants. Check the original parts list before selecting a substitute.