KOBB KBK25S 1.7HP 25L 8 Bar Oil-Free Silent Portable Air Compressor User Manual

1. Introduction and Product Overview

The KOBB KBK25S is a 1.7HP 25-liter, 8-bar oil-free silent portable air compressor designed for various pneumatic applications. Its maintenance-free asynchronous motor ensures quiet operation and efficient air and pressure generation. This manual provides essential information for safe and effective use, setup, operation, and maintenance of your air compressor.

Image 1.1: The KOBB KBK25S Air Compressor highlighting its key features such as high flow rate, oil-free operation, low noise, low vibration, low temperature rise, high pressure capability, high-speed silenced motor, and four-level protection.

This compressor is suitable for a wide range of tasks, including powering pneumatic staplers and nail guns, inflating tires with pressure gauges, operating paint guns, cleaning computers and electronic devices, and checking the sealing of gas or heating installations. It delivers maximum performance with an air production capacity of 205 liters per minute and an air output of 90 liters per minute at 8 bar pressure.

Image 1.2: The KOBB KBK25S Air Compressor demonstrating its versatility by showing various pneumatic tools it can power, including paint guns, orbital sanders, impact wrenches, air dusters, nail guns, and staplers.

2. Safety Instructions

Always prioritize safety when operating any power tool. Read and understand all safety warnings and instructions before using the KOBB KBK25S air compressor.

• Personal Protective Equipment: Always wear appropriate eye protection (safety glasses or goggles) and hearing protection when operating the compressor.
• Work Area: Ensure your work area is clean, well-lit, and free from clutter. Do not operate the compressor in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
• Electrical Safety: Do not expose the compressor to rain or wet conditions. Keep the power cord away from heat, oil, sharp edges, or moving parts.
• Pressure Safety: Never exceed the maximum operating pressure of the compressor or the tool being used. Ensure all connections are secure before operation.
• Maintenance: Disconnect the power plug from the electrical outlet before making any adjustments, changing accessories, or storing the compressor.
• Children and Bystanders: Keep children and bystanders away while operating the compressor.
• Ventilation: Operate the compressor in a well-ventilated area to prevent overheating.

3. Product Components

Familiarize yourself with the main components of your KOBB KBK25S air compressor:

Image 3.1: A detailed diagram illustrating the various parts of the KOBB KBK25S Air Compressor, including the expandable handle, air inlet filter, twin piston air compressor, oil-free/silent asynchronous motor, air production tube, overload protection, pressure adjustment valve, dual pressure gauges, pressurized air outlet connection, safety valve, air tank, and air drain valve.

1. Expandable Handle: For easy and comfortable transport.
2. Air Inlet Filter: Protects the compressor from dust and debris.
3. Twin Piston Air Compressor: Efficiently generates compressed air.
4. Oil-Free/Silent Asynchronous Motor: Provides quiet, powerful, and maintenance-free operation.
5. Air Production Tube: Connects the compressor head to the air tank.
6. Overload Protection: Automatically shuts down the motor if it overheats.
7. Pressure Adjustment Valve: Allows precise control over the output air pressure.
8. Pressure Gauges (2x): Displays tank pressure and regulated output pressure.
9. Pressurized Air Outlet Connection: Dual quick-connect ports for attaching pneumatic tools.
10. Safety Valve: Releases excess pressure to prevent over-pressurization of the tank.
11. Air Tank: Stores compressed air.
12. Air Drain Valve: Used to drain condensation from the air tank.

4. Setup

Follow these steps to set up your air compressor for first use:

• Unpacking: Carefully remove the compressor from its packaging. Inspect for any shipping damage.
• Positioning: Place the compressor on a stable, level surface. The integrated vacuum rubber feet will help prevent vibration and slipping. Ensure there is adequate ventilation around the unit.
• Handle Assembly: Extend the handle to a comfortable position for transport, if applicable.
• Initial Power-Up: Before connecting any tools, plug the compressor into a suitable grounded electrical outlet. The compressor will begin to fill the air tank. Allow it to reach its maximum pressure and shut off automatically. This confirms proper operation of the pressure switch.
• Check for Leaks: Listen for any hissing sounds indicating air leaks. If leaks are detected, tighten connections or consult the troubleshooting section.

5. Operating Instructions

Operating your KOBB KBK25S air compressor is straightforward:

• Power On: Ensure the compressor is plugged in. The motor will start automatically to fill the tank.
• Adjusting Pressure: Use the pressure adjustment valve to set the desired output pressure for your pneumatic tool. Monitor the output pressure gauge to ensure accuracy.
• Connecting Tools: Attach your pneumatic tool to one of the quick-connect air outlet connections. Ensure the connection is secure.
• Using the Tool: Operate your pneumatic tool as per its own instructions. The compressor will cycle on and off automatically to maintain tank pressure.
• Monitoring Gauges: Regularly check both the tank pressure gauge and the output pressure gauge to ensure consistent performance.
• Power Off: When finished, turn off the compressor (if it has a power switch) and unplug it from the electrical outlet. Release any remaining air pressure from the tank by opening the drain valve or briefly operating a tool.

Image 5.1: The KOBB KBK25S Air Compressor being used for various applications, including inflating a car tire, cleaning a car interior with an air duster, spray painting, and operating a stapler, showcasing its practical utility.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your air compressor. Always disconnect power before performing maintenance.

• Drain Condensation: Water accumulates in the air tank due to condensation. This water must be drained regularly (daily or after each use, depending on humidity) to prevent corrosion and damage to pneumatic tools. Open the air drain valve at the bottom of the tank until all water is expelled.
• Clean Air Filter: Periodically inspect and clean the air inlet filter. A clogged filter reduces compressor efficiency. Refer to the filter's specific cleaning instructions.
• Check Connections: Regularly check all air hose connections and fittings for tightness and wear. Replace any worn or damaged parts.
• Thermal Protection: If the motor overheats and the thermal protection activates, the compressor will shut down automatically. Allow the motor to cool down completely before restarting. The compressor will automatically restart once cooled.

Image 6.1: Close-up views of the KOBB KBK25S Air Compressor, showing details of the motor, the condensation drain valve at the bottom of the tank, the pressure gauges, and the robust wheels, highlighting key areas for inspection and maintenance.

7. Troubleshooting

If you encounter issues with your compressor, refer to this section before seeking professional service.

8. Specifications

Technical specifications for the KOBB KBK25S Air Compressor:

Image 8.1: An internal view of the KOBB KBK25S Air Compressor's motor and twin piston mechanism, highlighting its advanced oil-free technology designed for fast air storage and high flow supply.

9. Warranty and Support

For warranty information and customer support, please refer to the documentation provided with your purchase or contact KOBB customer service. Keep your purchase receipt as proof of purchase for any warranty claims.