Product
Ingersoll Rand ATN18504 Air Filter Element | ATN 185kW Centrifugal Compressor
Genuine Ingersoll Rand ATN18504 air filter element for ATN-series 185kW oil-free centrifugal compressors. Micro-fiberglass media delivers 99.5% filtration efficiency at 3.0 μm, low initial pressure drop, and high dust-holding capacity to protect precision impellers.
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Ingersoll Rand ATN18504 Air Filter Element
Product Overview
ATN18504 is a genuine Ingersoll Rand air filter element engineered for the intake filtration system of ATN-series 185kW oil-free centrifugal compressors. The element uses micro-fiberglass media rated at 99.5% filtration efficiency for 3.0 μm particles, blocking dust and particulate matter from entering the compression chamber. This protects the high-speed precision impeller and diffuser from erosion and helps maintain ISO 8573-1 Class 0 oil-free air quality.
As a core consumable in the Ingersoll Rand centrifugal compressor intake filtration system, ATN18504 is built to Ingersoll Rand global technical standards, combining low initial pressure drop, high dust-holding capacity, and long service life to reduce energy consumption and unplanned downtime.
Basic Specifications
| Item | Specification |
|---|---|
| Part Number | ATN18504 |
| Brand | Ingersoll Rand |
| Component | Air Filter Element |
| Product Line | CC (Centrifugal Compressor) |
| Compatible Machines | ATN-series oil-free centrifugal compressors (185kW class) |
| Unit of Measure | EA |
| Availability | In regular supply |
Technical Specifications
1. Filtration Performance
| Parameter | Value |
|---|---|
| Filtration Rating | 3.0 μm |
| Filtration Efficiency | 99.5% @ 3.0 μm |
| Filter Class | F7 (medium-high efficiency, per EN 779 / ISO 16890) |
| Dust-Holding Capacity | Approx. 3.5 kg (at rated flow, terminal resistance) |
| Beta Ratio β | β₃.₀ ≥ 200 |
The micro-fiberglass media achieves 99.5% efficiency at 3.0 μm and above, well above standard screw compressor air filters (F5 class, 98% @ 5 μm), meeting the stringent intake cleanliness requirements of centrifugal compressors and protecting the precision impeller and diffuser of 185kW units.
2. Flow and Pressure Drop
| Parameter | Value |
|---|---|
| Rated Air Flow | Approx. 25–40 Nm³/min (for 185kW-class centrifugal units) |
| Initial Pressure Drop | Approx. 220–300 Pa (clean, at rated flow) |
| Operating Differential Range | 300–550 Pa |
| Alarm / Terminal Resistance | Alarm: 650 Pa; Terminal: 800 Pa (replace immediately) |
| Pressure Drop vs. Energy | Each 100 Pa increase in intake pressure loss raises compressor shaft power by approx. 0.35% |
The micro-fiberglass design delivers approximately 40% lower clean pressure drop and approximately 89% higher dust-holding capacity than comparable alternatives, reducing compressor energy consumption and extending replacement intervals.
3. Dimensions and Installation
| Parameter | Value |
|---|---|
| Dimensions | Approx. φ420 × φ220 × 380 mm (OD × ID × height) |
| Effective Filter Area | Approx. 12–15 m² (pleated cartridge unfolded area) |
| Pleats / Pleat Spacing | Approx. 200–240 pleats, spacing approx. 6–8 mm |
| Mounting Interface | Flange / end-cap groove type, mates with intake filter housing |
| Sealing | Polyurethane (PU) foam gasket integrated into the end frame, seamless fit, zero leakage |
4. Construction Materials
| Parameter | Value |
|---|---|
| Filter Media | Micro-fiberglass |
| Media Weight | Approx. 120–150 g/m² |
| Inner / Outer Support | Galvanized metal support mesh (inner) + protective mesh (outer), prevents media collapse |
| End Caps | Polystyrene frame, lightweight, corrosion-resistant, incinerable |
| Gasket | Polyurethane (PU) one-piece foam gasket, high elasticity, seamless fit |
| Adhesive | Polyurethane adhesive bonds end caps to media, heat-resistant, no debonding |
5. Operating Conditions
| Parameter | Value |
|---|---|
| Operating Temperature | Continuous: -20°C to 80°C; max. 93°C (200°F) |
| Relative Humidity | ≤95% RH, no condensation |
| Collapse Pressure Resistance | Overall ≥ 2.8 kPa |
| Features | Low initial pressure drop, high dust-holding capacity, long replacement interval, zero-leakage seal |
6. Service Life and Maintenance
| Parameter | Value |
|---|---|
| Service Life | Approx. 6,000–8,000 hours (approx. 8–12 months) under standard conditions; 3,000–4,000 hours in high-dust environments |
| Shelf Life | 36 months in original sealed packaging, dry environment at room temperature |
7. Applicable Standards
- ISO 5011: Inlet air cleaning equipment for internal combustion engines and compressors — performance testing
- ISO 16889: Hydraulic fluid power filters — multi-pass method for evaluating filtration performance
- ISO 16890 / EN 779: Air filters for general ventilation — classification
- ISO 29463: High-efficiency air filters (HEPA and ULPA) — performance testing
- GB/T 14295: Air filters
- GB/T 6165: Methods of testing air filter performance — efficiency and resistance
Maintenance and Installation
Replacement Interval
- Standard conditions: every 6,000–8,000 hours or 8–12 months, whichever comes first
- High-dust conditions (mining, building materials, cement, steel, etc.): every 3,000–4,000 hours
- Replace immediately when the differential pressure alarm triggers (≥650 Pa)
Installation Steps
- Shut down and lock out: Turn off the main compressor power, apply lockout/tagout (LOTO), confirm the unit has fully stopped and depressurized.
- Open the intake filter housing: Release the housing clamps or bolts and remove the cover or access door.
- Remove the old element: Pull the old ATN18504 element straight up and check whether the gasket remains in the housing groove.
- Clean the housing interior: Wipe the housing inner wall and sealing surface with a clean cloth; ensure no dust, oil, or foreign objects remain.
- Inspect the new element: Verify the part number ATN18504, check the media for damage, pleat deformation, or gasket aging.
- Install the new element: Place the new element vertically into the center of the housing, ensuring the gasket seats evenly on the sealing surface without tilting or twisting.
- Reassemble the housing: Refit the cover and tighten bolts or clamps evenly to ensure a gap-free seal.
- Start up and check for leaks: Run the compressor, listen for air leaks at the intake filter, and confirm the differential pressure gauge returns to normal (initial pressure drop should be 220–300 Pa).
FAQ
Q1: Which Ingersoll Rand compressors does ATN18504 fit?
A: ATN18504 is designed for Ingersoll Rand ATN-series 185kW oil-free centrifugal compressors. If you are unsure about your model, provide the compressor serial number and we will match it precisely.
Q2: How is ATN18504 different from a standard screw compressor air filter?
A: Centrifugal compressors require far higher intake cleanliness than screw compressors. ATN18504 uses micro-fiberglass high-efficiency media (99.5% @ 3.0 μm), while standard screw compressor filters are only F5 class (98% @ 5 μm). Using a standard filter can lead to impeller fouling, loss of dynamic balance, and even costly impeller damage.
Q3: How do I know when to replace the air filter element?
A: Replace under any of these three conditions: ① operating differential pressure reaches the 650 Pa alarm value; ② the 6,000–8,000 hour or 8–12 month interval is reached; ③ visual inspection reveals media damage or gasket aging/deformation.
Q4: Is ATN18504 a genuine original part?
A: ATN18504 is a genuine Ingersoll Rand original spare part, manufactured to Ingersoll Rand global technical standards and compatible with Ingersoll Rand original intake filter housings.
Q5: Is one filter element enough?
A: Centrifugal compressor intake filter assemblies may use one or multiple elements. The exact quantity depends on the intake filter assembly specification. Please provide the serial number for confirmation.
Related Parts
| Part Number | Name | Description |
|---|---|---|
| ATS11057 | Air Filter Element | ATS-series centrifugal compressor intake filter (110kW class) |
| ATN09504 | Air Filter Element | ATN-series centrifugal compressor intake filter (95kW class) |
| ATN10504 | Air Filter Element | ATN-series centrifugal compressor intake filter (105kW class) |
| ATN72018 | Air Filter Element | ATN-series large centrifugal compressor intake filter (720kW class) |
| A29504376 | Air Filter Element | Oil-free screw compressor pre-filter (coarse) |
| A29504406 | Air Filter Element | Oil-free screw compressor main filter (H11 class) |
| A11516974 | Air Filter Element | Medium centrifugal compressor filter (panel type) |
| A13368674 | Air Filter Element | Large centrifugal compressor filter (panel type) |
Note: The technical parameters above are compiled from Ingersoll Rand official centrifugal compressor filtration system specifications and industrial filtration standards. For 100% accurate matching, please provide the complete compressor serial number so we can check the original parts diagram and confirm current supply.