1. Introduction
Thank you for choosing the dwndpump AS230PRO High Pressure Digital Bike Tire Inflator Pump. This compact and powerful electric air pump is designed for fast and accurate tire inflation for various bicycles, including road and mountain bikes. Its portable design, digital pressure gauge, and auto-off feature make it an essential tool for cyclists. Please read this manual carefully before use to ensure proper operation and maintenance.
2. Package Contents
Please check the box for the following items:
- Air pump
- Air hose
- Pillar (stand/mount)
- User manual
- Seal part
- Type-C cable
- Waterproof bag
- Presta valve converter
- Ball needle
- Silicone case
3. Specifications
| Feature | Specification |
|---|---|
| Brand Name | dwndpump |
| Model Number | AS230PRO |
| Origin | Mainland China (Sichuan) |
| Pressure Range | 0-120 PSI |
| Max Pressure | 120 PSI |
| Material | Aluminum Alloy |
| Valve Type Compatibility | Schrader, Presta Valve |
| Gauge | Digital (Real-time display) |
| Application | Tire inflation for Road bicycles, Mountain Bicycles |
| Operating Mode | Automatic |
| Features | Lightweight, High Pressure, Easy To Use, Durable |
| Product Name | Tiny e-pump for bike |
| Size | 73mm x 32mm x 50mm (2.87in x 1.25in x 1.96in) |
| Weight | 130g (0.29lb) |
| Battery Capacity | 420mAh 7.4V |
| Current | 2.5~7.5 A |
4. Setup
4.1 Charging the Pump
Before first use, fully charge the pump. Connect the provided Type-C cable to the pump's charging port and to a compatible USB power adapter (not included). A full charge takes approximately 30 minutes for the 420mAh battery.
4.2 Attaching the Valve Adapter
The pump supports both Presta and Schrader valves. Use the appropriate adapter and ensure it is correctly oriented:
- For Presta Valve: Ensure the small hole of the adapter faces outward.
- For Schrader Valve: Ensure the big hole of the adapter faces outward.
You can inflate using either the direct air nozzle connection or the included air hose for more flexibility.
5. Operating Instructions
5.1 Power On/Off
Press and hold the power button to turn the pump on or off. The digital display will illuminate upon activation.
5.2 Digital Display and Pressure Setting
The pump features a digital display that shows the real-time pressure value, battery level, and selected pressure unit (BAR or PSI). Use the '+' and '-' buttons to set your desired target pressure. The pump has a maximum pressure of 120 PSI and an accuracy of ±1 PSI.
5.3 Inflation Process
- Connect the pump securely to the tire valve using the appropriate adapter.
- Turn on the pump and set your desired target pressure using the '+' and '-' buttons.
- Press the inflation button to start pumping. The pump will automatically stop once the target pressure is reached.
- Disconnect the pump from the valve.
5.4 Inflation Performance (Fully Charged)
The following table outlines the approximate inflation performance when the pump is fully charged:
| Tire Type | Pressure Range | Inflating Time | Available Times |
|---|---|---|---|
| 700C25 | 0-80 PSI / 5.52 bar | 50s | 4 |
| 700C25 | 0-110 PSI / 7.58 bar | 90s | 2 |
| 700C28 | 0-80 PSI / 5.52 bar | 60s | 3 |
| 700C32 | 0-80 PSI / 5.52 bar | 80s | 2 |
| 29x2.2 | 30-50 PSI / 2.07-3.45 bar | 60s | 3 |
| 29x2.2 | 0-30 PSI / 2.07 bar | 70s | 3 |
| 700C45 | 30-50 PSI / 2.07-3.45 bar | 30s | 6 |
| 700C45 | 0-50 PSI / 3.45 bar | 80s | 3 |
6. Maintenance
- Cleaning: Wipe the pump with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the pump in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, charge the pump regularly, even if not in frequent use. Avoid fully discharging the battery for extended periods.
- Adapter Care: Keep valve adapters clean and free from debris to ensure a proper seal during inflation.
7. Troubleshooting
- Pump not turning on: Ensure the battery is charged. Connect the pump to a power source using the Type-C cable and allow it to charge for at least 30 minutes.
- Slow inflation or no inflation: Check that the valve adapter is securely connected to both the pump and the tire valve. Ensure the correct adapter is used for your valve type (Presta or Schrader). Verify that the tire valve itself is not obstructed or damaged.
- Inaccurate pressure reading: Ensure the pump is properly connected to the valve. The pump has an accuracy of ±1 PSI; minor fluctuations are normal. If you suspect a significant inaccuracy, try re-connecting the pump or consult the support section.
- Pump overheating: If the pump becomes excessively hot during prolonged use, allow it to cool down before continuing. For TPU inner tubes with resin valves, always use an extension air hose to prevent overheating damage to the valve.
8. User Tips
- Protecting TPU Inner Tubes: For bicycles equipped with TPU inner tubes that have resin valves, it is crucial to use an extension air hose during inflation. Direct connection of the pump to such valves can cause overheating and potentially melt the resin, leading to damage.
9. Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please refer to the contact information provided by your retailer or the manufacturer. Keep your purchase receipt as proof of purchase.
10. Safety Information
- Keep the pump out of reach of children.
- Do not over-inflate tires beyond their recommended pressure limits. Refer to your tire's sidewall for maximum PSI.
- Avoid exposing the pump to water or extreme temperatures.
- Do not attempt to disassemble or modify the pump, as this will void the warranty and may cause injury.
- Use only the provided charging cable and accessories.