The High-Performance Air Skid (HPA-75-ENC) is a high-pressure compressed air system engineered for laser cutting fabricators using air as a cutting assist gas. The system delivers clean, dry, contaminate-free air at pressures up to 580 PSI, making it suitable for aluminum up to 1 inch and applicable to mild steel and stainless steel depending on edge color requirements. Compared to nitrogen assist gas, the system is designed to reduce operating costs by 60–70%, delivering rapid return on investment and improved profit margins.
The HPA-75-ENC integrates a 530-3-11-40 reciprocating booster compressor, desiccant dryer, dual-stage air storage, multi-stage filtration on both the low-pressure inlet and high-pressure outlet sides, and an AirMaster Q2 PLC controller — all within a single enclosed skid-mounted package. Compressed air quality meets ISO 8573-1:2010 Class 2, with a minimum dew point of -40°C at the dryer outlet.
System Specifications
| Parameter | Value |
|---|---|
| Model | HPA-75-ENC |
| Electrical Requirements | 460V / 3-Phase / 60Hz — wire to fused disconnect |
| Amperage | 25A |
| Dimensions (D × W × H) | 42" × 142" × 89" |
| Inlet Connection | 1" NPT |
| Outlet Connection | 1" NPT |
| Inlet Pressure Range | 85–115 PSI |
| Max Outlet Pressure Range | 425–580 PSI |
| Ambient Temperature Range | 32°F – 122°F (0°C – 50°C) |
| Weight | 5,000 lbs |
| Compressed Air Quality | ISO 8573-1:2010 Class 2 — Dew point ≤ -40°C |
| Controller | AirMaster Q2 PLC |
Performance — Inlet Pressure Correction Values
Maximum outlet pressure and flow rate vary with inlet pressure. Use the table below to confirm expected system performance at your site's supply pressure. The operating pressure band should be maintained at 10–30% of maximum outlet pressure.
| Inlet Pressure (PSI) | Max Outlet Pressure (PSI) | Flow Rate (CFM) |
|---|---|---|
| 85 | 425 | 73 |
| 95 | 475 | 82 |
| 105 | 525 | 90 |
| 115 | 580 | 99 |
Main System Components
| Item | Component | Model / Description |
|---|---|---|
| 1 | Triple Filter Assembly (LP Inlet) | Water separator, fine particle filter, oil removal filter |
| 2 | Desiccant Air Dryer | MMD-US-120 — 115V / 1PH / 60Hz |
| 3 | 120-Gallon Low-Pressure Receiver | 160 PSIG / ASME rated — with auto drain |
| 4 | 530 Booster Compressor | 530-3-11-40 — 11 kW / 15 HP, 3-cylinder reciprocating |
| 5 | Aftercooler | Integrated serpentine — TR10909 |
| 6 | 240-Gallon High-Pressure Receiver | 580 PSIG / ASME rated — with auto drain |
| 7 | Triple Wall-Mounted Filter Assembly (HP Outlet) | Particle filter, oil removal filter, Carbolescer |
| 8 | Muffler Assembly | 6" muffler with filter and condensate drain |
| 9 | PLC Controller | AirMaster Q2 |
| 10 | Emergency Stop | Panel-mounted |
| 11 | Main Disconnect Switch | Panel-mounted |
Booster Compressor Specifications — 530-3-11-40
| Parameter | Value |
|---|---|
| Compressor Type | Single-stage, 3-cylinder reciprocating, air-cooled, splash-lubricated |
| Free Air Delivery (FAD) | 2,800 L/min (99 CFM) |
| Motor Power | 11 kW (15 HP) |
| Motor Voltage | 208–230 / 460V, 3-Phase, 60Hz |
| Compressor Speed | 750 RPM |
| Number of Cylinders | 3 |
| Cylinder Diameter | 60 mm |
| Piston Stroke | 58.6 mm |
| Motor Pulley Diameter | Ø125 mm @ 60Hz |
| Compressor Pulley Diameter | Ø610 mm |
| V-Belt Size | 22 × 2200 mm @ 60Hz |
| Oil Capacity | 4 liters |
Filter Train Summary
The HPA-75-ENC uses two separate filter trains to protect air quality at every stage of the process. The low-pressure inlet train conditions incoming air before it reaches the booster. The high-pressure outlet train delivers final treated air to the laser cutting machine.
Low-Pressure Inlet Filter Train
| Stage | Component | Function |
|---|---|---|
| 1 | Water Separator — GWS-US-175 | Bulk liquid water removal with electronic auto-drain |
| 2 | Fine Particle Filter — GON-US-130-MX | 1 micron particulate removal, 0.5 mg/m³ oil carryover max |
| 3 | Oil Removal Filter — GON-US-130-MY | 0.01 micron, 0.01 mg/m³ oil carryover max |
| 4 | Desiccant Dryer — MMD-US-120 | Moisture removal to -40°C dew point |
| 5 | Particle Filter — GON-US-130-MP | Post-dryer particulate protection before LP receiver |
| 6 | Oil Removal Filter — GON-US-130-MY | Final oil removal before booster compressor inlet |
High-Pressure Outlet Filter Train
| Stage | Component | Function |
|---|---|---|
| 1 | Particle Filter — HG-US-350-MX | 1 micron particulate removal at 725 PSIG rated pressure |
| 2 | Oil Removal Filter — HG-US-350-MY | 0.01 micron, 0.01 mg/m³ oil carryover max at high pressure |
| 3 | Carbolescer Filter — ELM-C-50-40 | Combined coalescing and activated carbon — removes oil aerosol and vapor to 0.003 mg/m³ |
Filter Train Flow Diagram
Related Articles
- High-Performance Air Skid (HPA-75-ENC) — Installation & Startup
- High-Performance Air Skid (HPA-75-ENC) — Controls & Operation (AirMaster Q2 PLC)
- High-Performance Air Skid (HPA-75-ENC) — Filter & Preventive Maintenance
- High-Performance Air Skid (HPA-75-ENC) — Alarms & Troubleshooting
- High-Performance Air Skid (HPA-75-ENC) — Safety Guidelines
- High-Performance Air Skid (HPA-75-ENC) — Parts List & Assembly Reference
Contact South-Tek Systems
Phone: (910) 415-1880
Email / Ticket: support@southteksystems911.zendesk.com