Air Compressor 500L (15 bar)

A heavy-duty, industrial-grade belt-drive piston air compressor designed for continuous operation in demanding workshops, auto body shops, and light industrial settings.

• 500L: Features a very large 500-litre (≈132 US gallon) air storage tank.
• 15: Delivers approximately 15 cubic feet per minute (CFM) of compressed air at standard pressure.
• B: Belt-driven system for efficient power transfer from motor to pump.

How It Works

A high-horsepower electric motor drives a crankshaft via heavy-duty V-belts. This powers a two or three-cylinder, oil-lubricated cast iron pump that compresses air into the massive storage tank. A pressure switch controls the motor to maintain system pressure (e.g., 8-10 bar / 115-145 PSI).

Key Components & Specifications

• Pump: Industrial-grade, cast iron, oil-lubricated reciprocating pump built for continuous duty and high output.
• Motor: Typically a 10 HP (7.5 kW) to 15 HP (11 kW) three-phase induction motor (400V/50Hz or 460V/60Hz). Single-phase versions are rare and require very high amperage.
• Air Delivery: ~15 CFM at 90 PSI (6.2 bar). This is the critical rating for running multiple or high-demand tools.
• Duty Cycle: 100% continuous duty cycle for professional, all-day operation.

Primary Applications

• Professional Automotive & Collision Shops: Can simultaneously or sequentially power spray guns, sanders, large impact wrenches (¾”), and air drills without significant pressure drop.
• Small Manufacturing & Fabrication: Operating multiple pneumatic presses, clamps, and assembly tools.
• Commercial Tire & Fleet Service Centers: For high-volume tire inflation and impact wrench use.
• Woodworking & Cabinetry Shops: Running several nail guns and sanders concurrently.

Critical Advantages

• High CFM Output: 15 CFM can power most common shop air tools, including smaller sandblasters and some plasma cutters.
• Massive Air Reserve: The 500L tank provides an enormous buffer, allowing the compressor to handle large, intermittent air demands (like running a DA sander) without the motor cycling on constantly. This ensures stable pressure and reduces motor wear.
• Belt-Drive Reliability: Runs cooler and quieter than direct-drive at this power level. The belts protect the motor from shock loads and allow for easier maintenance and potential motor/pump speed optimization.
• Industrial Build Quality: Designed for daily, heavy use in a commercial environment.

Critical Safety & Operational Rules

• Professional 3-Phase Electrical Installation: This is not a plug-in tool. Must be installed by a qualified electrician on a dedicated, correctly sized three-phase circuit with proper overload protection. Single-phase versions (if available) require a massive dedicated circuit (e.g., 50-60A at 230V).
• Permanent, Secure Foundation: Due to its immense weight (often 300+ kg / 660+ lbs), it requires a solid, level, reinforced concrete pad. It should be bolted down or placed on heavy-duty anti-vibration pads.
• Mandatory Daily Tank Drainage: Condensate production in a 500L tank is huge. Drain the tank completely every single day. Installing an automatic tank drain is highly recommended to prevent human error and internal rust.
• Strict Oil & Filter Maintenance: Check oil level frequently. Change oil and air intake filter per a strict schedule (e.g., every 500-1000 hours). Use only specified industrial compressor oil.
• Comprehensive Air Treatment: Given the high output, a properly sized air treatment system is essential:
• Aftercooler/Moisture Separator (immediately after the pump).
• Refrigerated Air Dryer (for paint and sensitive applications).
• Main Line Filter, Regulator, and Lubricator (FRL).
• Regular System Inspection: Check belt tension and condition, inspect all hoses and fittings for leaks, and listen for unusual noises. Test the pressure relief valve regularly.
• Ventilation & Cooling: Ensure the compressor room has excellent ventilation to manage the significant heat output. Intake air should be cool and clean.
• Lockout/Tagout for Maintenance: Always disconnect and lock out the electrical power before performing any service.

Bottom Line

The 500L-15B is a serious industrial air compressor that forms the backbone of a busy professional shop’s pneumatic system. It combines substantial air production (15 CFM) with an enormous reserve tank to handle multiple tools and high-demand applications reliably. This is a major capital investment that demands professional installation, rigorous daily and scheduled maintenance, and a full air treatment setup to protect both the compressor and the downstream tools. It is built for years of continuous service in the right environment.