Ingersoll Rand ATN18504 Air Filter Element

Product Overview

The ATN18504 air filter element is a genuine Ingersoll Rand intake filter element engineered specifically for ATN-series 185kW oil-free centrifugal compressors. Built with micro-fiberglass media, it captures 99.5% of particles at 3.0 μm, blocking dust and particulate matter from entering the compression chamber. This protects the high-speed precision impeller and diffuser from wear and helps maintain ISO 8573-1 Class 0 oil-free air quality.

As a core consumable in the centrifugal compressor intake filtration system, the ATN18504 is manufactured to Ingersoll Rand global technical standards. It combines low initial pressure drop, high dust-holding capacity and extended service life to reduce operating energy costs and maintenance downtime.

Basic Specifications

Technical Parameters

1. Filtration Performance

The ATN18504 uses micro-fiberglass media achieving 99.5% efficiency at 3.0 μm, significantly higher than standard screw compressor elements (F5, 98% @ 5 μm). This meets the stringent intake cleanliness requirements of centrifugal compressors and protects the precision impeller and diffuser of 185kW units.

2. Flow and Resistance

The micro-fiberglass design delivers approximately 40% lower clean pressure drop and 89% higher dust-holding capacity than comparable alternatives, reducing energy consumption and extending replacement intervals.

3. Dimensions and Installation

4. Material Construction

5. Operating Conditions

6. Service Life and Maintenance

7. Standards

• ISO 5011 — Inlet air filter performance testing (efficiency and dust capacity)
• ISO 16889 — Hydraulic filter β ratio determination
• ISO 16890 / EN 779 — General ventilation air filter classification
• ISO 29463 — High-efficiency air filter performance testing
• GB/T 14295 — Air filters
• GB/T 6165 — Air filter performance test methods (efficiency and resistance)

Standard Maintenance and Installation

Replacement Interval

• Standard conditions: every 6,000–8,000 hours or 8–12 months, whichever comes first
• High-dust conditions (mining, construction materials, cement, steel): every 3,000–4,000 hours
• Replace immediately when differential pressure alarm triggers (≥650 Pa)

Installation Steps

1. Shut down and lock out: Disconnect main power, apply LOTO, confirm the unit has fully stopped and depressurized.
2. Open the intake filter housing: Release clamps or bolts and remove the cover or access door.
3. Remove old element: Pull the old ATN18504 element straight up; check whether the gasket remains in the housing groove.
4. Clean housing interior: Wipe the inner walls and sealing surfaces with a clean cloth — no dust, oil or foreign matter.
5. Inspect new element: Verify part number ATN18504, check media for damage, pleat deformation and gasket aging.
6. Install new element: Place vertically into the housing center, ensuring the gasket seats evenly on the sealing surface without skew or twist.
7. Reassemble housing: Refit the cover, tighten bolts or clamps evenly to ensure a gap-free seal.
8. Start up and leak-check: Run the compressor, listen for air leaks at the intake filter, and confirm the differential pressure gauge reads normal (initial drop should be 220–300 Pa).

FAQ

Q1: Which Ingersoll Rand compressors does the ATN18504 fit?

A: The ATN18504 is designed for Ingersoll Rand ATN-series 185kW oil-free centrifugal compressors. If you are unsure, provide the compressor serial number and we will match it precisely.

Q2: How is the ATN18504 different from a standard screw compressor air filter?

A: Centrifugal compressors require far higher intake cleanliness than screw compressors. The ATN18504 uses micro-fiberglass media (99.5% @ 3.0 μm), while standard screw compressor elements are only F5 (98% @ 5 μm). Using a standard element can cause impeller fouling, dynamic balance loss and potentially costly impeller damage.

Q3: How do I know when to replace the air filter element?

A: Replace when: (1) operating differential reaches the 650 Pa alarm value; (2) the 6,000–8,000 hour or 8–12 month interval is reached; or (3) visual inspection shows media damage or gasket aging/deformation.

Q4: Is the ATN18504 a genuine original part?

A: The ATN18504 is a genuine Ingersoll Rand replacement part, manufactured to Ingersoll Rand global technical standards and compatible with original intake filter housings.

Q5: Is one filter element enough?

A: Centrifugal compressor intake filter assemblies may use one or multiple elements. The quantity depends on the intake filter assembly specification — please provide the serial number for confirmation.

Related Parts

Note: The technical parameters above are compiled from Ingersoll Rand centrifugal compressor filtration system specifications and industrial filtration standards. For 100% accurate matching, provide the complete compressor serial number and we will check the original parts diagram and confirm current supply information.