1. Product Overview
The QUMOX Portable Air Compressor WY-7075 is a compact and versatile device designed for inflating various items, including car tires, motorcycle tires, bicycle tires, and sports balls. Featuring a powerful 150 PSI output and a 4000 mAh rechargeable battery, it offers convenient and efficient inflation on the go. Its intelligent design includes an automatic stop function, an LCD digital display for precise pressure monitoring, and integrated LED lights for emergency illumination and SOS signaling. Additionally, it can function as a power bank to charge your mobile devices.

Image: QUMOX Portable Digital Tire Inflator highlighting key features.
2. Safety Instructions
Please read all safety instructions carefully before using this product to ensure safe operation and prevent damage.
- Always read the user manual thoroughly before first use.
- Keep the device out of reach of children.
- Do not operate the air compressor in wet conditions or expose it to rain.
- Avoid over-inflating items. Always refer to the manufacturer's recommended pressure for the item being inflated.
- Ensure the air hose and nozzles are securely attached before operation.
- Do not leave the device unattended while it is operating.
- Store the air compressor in a cool, dry place, away from direct sunlight and extreme temperatures.
- Do not attempt to disassemble or modify the device. Contact qualified personnel for repairs.
- Use only the provided charging cable and recommended power adapters.
3. Package Contents
Verify that all items are present in the package:
- QUMOX Portable Air Compressor WY-7075
- Air Hose
- Multi-function Air Nozzles (various adapters)
- USB-A to Type-C Charging Cable
- User Manual

Image: The QUMOX Portable Air Compressor and its complete set of accessories.
4. Product Diagram and Controls
Familiarize yourself with the components and control panel of your air compressor:

Image: Front view of the air compressor with labels for its display and control buttons.
- 1. Mode Icon: Displays the currently selected inflation mode (e.g., car, motorcycle, bicycle, ball).
- 2. Tire Pressure Value: Shows the real-time or target air pressure.
- 3. Battery Level Display: Indicates the remaining battery charge.
- 4. Pressure Unit Icon: Shows the current pressure unit (e.g., BAR, PSI, KPA).
- 5. '+' Button: Short press to increase the target pressure. Long press to activate the LED light or cycle through light modes.
- 6. '-' Button: Short press to decrease the target pressure.
- 7. Power/Start/Stop Button: Long press to turn the device ON/OFF. Short press to start or stop the inflation process.
- 8. Mode Selection Button: Short press to cycle through different inflation modes (Car, Motorcycle, Bicycle, Ball). Long press to change pressure units (PSI, BAR, KPA).
5. Charging the Device
Before first use, fully charge the air compressor. To charge:
- Connect the provided Type-C charging cable to the Type-C input port on the air compressor.
- Connect the other end of the cable to a suitable USB power adapter (not included) or a USB port.
- The battery level indicator on the display will show the charging status.
- Once fully charged, disconnect the charging cable.
The device can also be used as an emergency power bank:
- Connect your mobile device to the USB-A output port on the air compressor using a compatible USB cable.
- The air compressor will begin charging your device.

Image: The air compressor functioning as an emergency power bank, recharging a smartphone.
6. Setup and Operating Instructions
6.1 Initial Setup
- Connect Air Hose: Screw the air hose securely onto the air outlet port of the compressor.
- Attach Nozzle: Select the appropriate nozzle for the item you wish to inflate and attach it to the other end of the air hose.
- Connect to Item: Connect the nozzle to the valve stem of the tire or the inflation port of the ball/inflatable.
6.2 Inflation Process
- Power On: Long press the Power/Start/Stop Button to turn on the device. The LCD display will light up.
- Select Mode: Short press the Mode Selection Button to cycle through the preset inflation modes (Car, Motorcycle, Bicycle, Ball). Choose the mode appropriate for your item.
- Set Target Pressure: Use the '+' and '-' buttons to adjust the desired target pressure. The display will show the target pressure.
- Change Pressure Units (Optional): Long press the Mode Selection Button to switch between pressure units (PSI, BAR, KPA).
- Start Inflation: Short press the Power/Start/Stop Button to begin inflation. The display will show the real-time pressure.
- Automatic Stop: The compressor will automatically stop once the preset target pressure is reached.
- Manual Stop: You can manually stop inflation at any time by short pressing the Power/Start/Stop Button.
- Disconnect: Once inflation is complete, disconnect the nozzle from the item and then detach the air hose from the compressor.

Image: The air compressor in use, inflating a tire with automatic stop functionality.

Image: The air compressor's versatility for inflating various items.
6.3 Using the LED Light and SOS Function
The integrated LED light provides illumination for nighttime use or emergencies:
- Activate Light: Long press the '+' Button to turn on the steady LED light.
- Cycle Modes: Short press the '+' Button again to cycle through different light modes: steady light, SOS flashing, and flashing red/blue warning lights.
- Turn Off: Long press the '+' Button to turn off the light.

Image: The air compressor's LED light providing illumination.
7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your air compressor:
- Cleaning: Wipe the exterior of the device with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the air compressor in a dry, cool, and well-ventilated area when not in use. Keep it away from direct sunlight and extreme temperatures.
- Battery Care: If the device is not used for an extended period, charge it periodically (e.g., every 3 months) to maintain battery health and extend its lifespan.
- Air Vents: Ensure that the air vents are clear of dust and debris to prevent overheating.
8. Troubleshooting
If you encounter issues with your QUMOX Portable Air Compressor, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery or no charge. | Charge the device fully using the provided Type-C cable. |
| Compressor does not inflate. | Air hose not securely connected; nozzle not properly attached; target pressure not set; item already at target pressure. | Ensure all connections are tight. Select the correct mode and set a target pressure higher than the current pressure. |
| Inaccurate pressure reading. | Nozzle not fully sealed to valve; sensor error. | Ensure a tight seal between the nozzle and the valve. Re-attach and re-check. |
| Slow inflation. | Small leak in connection; hose kinked; very large item. | Check all connections for leaks. Ensure the hose is straight. Inflation time varies with item size. |
9. Specifications
Key technical specifications for the QUMOX Portable Air Compressor WY-7075:
| Feature | Specification |
|---|---|
| Brand | QUMOX |
| Model Number | WY-7075 |
| Voltage | 7.4 Volts |
| Maximum Pressure | 150 PSI |
| Air Flow Rate | 40 Liters per minute |
| Battery Capacity | 4000 mAh |
| Noise Level | 20 Decibels |
| Special Feature | Automatic Stop |
| Material | Metal, Plastic |
| Hose Length | 15 Centimeters |
| Dimensions (L x W x H) | 8.9L x 5.2W x 12.4H centimeters |
| Recommended Uses | Tire inflation, Aerography, Blowing cleaning |

Image: Dimensions of the QUMOX Portable Air Compressor.
10. Warranty and Support
For warranty information, please refer to the documentation included with your purchase or visit the official QUMOX website. If you require technical support or have questions not covered in this manual, please contact QUMOX customer service through their official channels.