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Atlas Copco 2102-S4-115R
Product Introduction:
The GA 2102-S4-115R is a fixed-speed, oil-injected rotary screw air compressor from Atlas Copco’s GA range, designed for continuous industrial operation. The “S4” designation indicates the Service-Ready package with integrated dryer and filters. The “115R” denotes 115 kW motor power with rotary screw air end. This is a stationary, floor-mounted unit for factory and workshop environments.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Free Air Delivery (FAD) | 102 cfm (2.9 m³/min) at 8 bar |
| Working Pressure | 116 psi (8 bar) |
| Motor Power | 115 kW (154 hp) — 400V / 3-Phase / 50 Hz |
| Motor Efficiency Class | IE3 Premium Efficiency |
| Air End Type | GHH Rotary Screw — Oil-Injected |
| Cooling Method | Air-Cooled |
| Integrated Dryer | Refrigerated dryer included (S4 package) |
| Sound Level | 73 dB(A) |
| Dimensions (L×W×H) | 71 × 40 × 55 in (1,800 × 1,020 × 1,400 mm) |
| Weight (Dry) | 1,850 lbs (840 kg) |
| Oil Capacity | 4.8 gal (18 L) |
| Oil Separator Efficiency | < 3 ppm residual oil content |
Material Composition:
- Frame/Skid: Powder-coated steel base frame with fork pockets
- Air End: GHH cast iron housing, precision-ground rotary screws
- Cooler: Aluminum plate-fin air-to-air cooler
- Motor: IE3 cast aluminum, IP55-rated, F-class insulation
- Dryer (S4): Aluminum heat exchanger with copper tubing, R134a or R410A refrigerant
Structural Features:
- Compact skid-mounted design with integrated base frame
- S4 package includes: refrigerated dryer, coalescing filter, particulate filter, automatic condensate drain
- Elektronikon Basic controller with pressure band regulation
- 4-point vibration isolation mounts
- Service-friendly layout with front-facing air end access
Working Principle:
The 115 kW IE3 electric motor drives the oil-injected rotary screw air end at fixed speed (2,970 rpm). Air enters the air end, is compressed with injected oil for sealing and cooling, then passes through the oil separator (removing 99.97% of oil). Compressed air flows through the integrated refrigerated dryer (cooling air to +3°C dew point), then through the coalescing filter (removing oil aerosols to < 0.01 mg/m³) and particulate filter (1 μm) before delivery at 8 bar. The Elektronikon Basic controller manages start/stop based on 8 bar setpoint with a 2 bar load/unload band.
Key Advantages:
- S4 package delivers clean, dry air at the point of use — no external after-treatment required
- IE3 motor ensures low electrical operating cost for continuous duty
- Compact footprint fits in standard machine rooms
- GHH air end rated for 60,000+ hours between major overhaul
Applicable Industries:
Manufacturing plants, CNC machining, automotive workshops, food & beverage, pharmaceutical, textile, packaging
Installation Requirements:
- 400V 3-phase 50 Hz supply, minimum 200A breaker, grounding ≤ 5 ohms
- Indoor installation with ambient temperature 5–45°C (41–113°F)
- Minimum 2 ft (0.6 m) clearance on intake side, 3 ft (1 m) on discharge side
- Condensate drain line must be routed to floor drain or collection tank
- Ambient temperature above 40°C (104°F) requires derating per Atlas Copco curve
Usage Notes:
- Oil change every 4,000 hours or annually (whichever comes first) — use Atlas Copco Roto-Inject Fluid
- Coalescing filter element: replace every 4,000 hours
- Particulate filter element: replace every 8,000 hours
- Refrigerant dryer service annually — check refrigerant charge and clean condenser coils
- Do not operate below 5°C (41°F) without crankcase heater (optional accessory)
