Introduction
Thank you for choosing the Calmara MY20 Electric Bike Pump. This compact and portable pump is designed for efficient and precise tire inflation for various bicycles, including road bikes, mountain bikes, and e-bikes. Featuring a maximum pressure of 130 PSI, an auto shut-off function, and a clear digital display, the MY20 ensures reliable performance. Please read this manual thoroughly before use to ensure proper operation and maintenance.
Package Contents
Verify that all items listed below are included in your package:
- 1 x Calmara MY20 Mini Electric Bike Pump
- 1 x American Air Valve (Air Hose)
- 1 x Presta Valve Adapter
- 1 x Type-C Charging Cable
- 1 x Silicone Heat Sleeve
- 1 x Drawstring Bag
- 1 x Wrist Lanyard
- 1 x Waterproof Bag
- 1 x User Manual
Figure 1: Package Contents
Video 1: What's Included in the Bike Pump Package. This video demonstrates the unboxing and shows all components included with the Calmara MY20 Electric Bike Pump.
Product Overview
The Calmara MY20 is a compact and lightweight electric bike pump designed for portability and ease of use. It features a digital display for pressure readings and an intuitive control interface.
Figure 2: Digital Display and Controls
Figure 3: Compact and Portable Design
Charging the Pump
Before initial use, fully charge the pump. Use the provided Type-C charging cable to connect the pump to a compatible USB power source. A full charge takes approximately 55 minutes. The battery indicator on the digital display will show charging status.
Figure 4: High-Capacity Battery (2000mAh)
Setup and Valve Compatibility
The Calmara MY20 pump is compatible with both Presta and Schrader valves. The American Air Valve (air hose) connects directly to Schrader valves. For Presta valves, attach the included Presta Valve Adapter to the air hose before connecting to the tire valve.
Figure 5: Dual Valve Compatibility (Schrader & Presta)
Figure 6: Connecting the Air Hose and Adapters
Operating Instructions
- Connect the Air Hose: Connect the air hose to the pump and tighten it. Choose the correct valve (Schrader directly, Presta with adapter) and connect it to the tire valve.
- Power On: Long press the power button to turn on the pump.
- Switch Pressure Units: Long press the '+' and '-' buttons simultaneously to switch between PSI and BAR pressure units.
- Set Target Pressure: Use the '+' and '-' buttons to set your desired tire pressure.
- Start/Pause Inflation: Short press the power button to start inflation. The pump will automatically stop when the preset pressure is reached. Short press the power button again to pause inflation at any time.
Figure 7: Step-by-Step Inflation Guide
Auto Shut-Off & Digital Display
The pump features an auto shut-off function, automatically stopping when the preset target pressure is reached, preventing over-inflation. The high-brightness digital display provides clear, real-time pressure readings (accurate within ±1 PSI) and battery status, visible even in direct sunlight.
Figure 8: Automatic Shut-Off Function
Figure 9: High-Definition Digital Display
Video 2: Calmara Bike Pump in Use. This video demonstrates the Calmara MY20 Electric Bike Pump's operation, including connecting to a tire and the auto shut-off feature.
Performance Guidelines
The Calmara MY20 offers rapid inflation. Below are approximate inflation times and available uses on a full charge for common tire types:
| Tire Type | Pressure Range | Inflation Time (0-80 PSI) | Available Times (Full Charge) |
|---|---|---|---|
| 700x23C Road Tire | 70-120 PSI | ~35-40 seconds (0-80 PSI) | 3-4 |
| 700x25C Road Tire | 70-120 PSI | ~3 minutes (0-120 PSI) | 2-3 |
| 700x28C Road Tire | 70-120 PSI | ~70-75 seconds (0-80 PSI) | 3 |
| 700x32C Road Tire | 70-120 PSI | ~90 seconds (0-80 PSI) | 2 |
| 26x1.95 Mountain Bike Tire | 20-60 PSI | ~90-100 seconds (0-50 PSI) | 2-3 |
Note: Lithium battery performance may vary in cold temperatures.
Figure 10: Key Features and Performance
Figure 11: Bike Compatibility Chart
Care and Maintenance
- Cleaning: Wipe the pump with a soft, dry cloth. Do not use harsh chemicals or immerse in water.
- Storage: Store the pump in the provided drawstring bag or waterproof bag in a cool, dry place away from direct sunlight and extreme temperatures.
- Heat Management: The included silicone heat sleeve can be used to provide heat insulation during extended use, as the brushless motor may generate some heat.
- Battery Care: For optimal battery life, charge the pump regularly, even if not in frequent use. Avoid fully discharging the battery for prolonged periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not turn on. | Low battery or not charged. | Charge the pump using the Type-C cable. Ensure the power button is long-pressed to turn on. |
| Pump inflates slowly or not at all. | Improper connection to valve; low battery. | Ensure the air hose and valve adapter (if used) are securely tightened to both the pump and the tire valve. Charge the pump. |
| Pump stops before reaching target pressure. | Target pressure reached; low battery. | Check the digital display for current pressure. If it matches the target, the auto shut-off functioned correctly. If not, charge the pump. |
| Pump gets warm during use. | Normal operation of brushless motor. | This is normal. Use the silicone heat sleeve for insulation if desired. Allow the pump to cool down between prolonged uses. |
| Inaccurate pressure reading. | Loose connection; sensor issue. | Ensure all connections are tight. If the issue persists, contact customer support. |
Specifications
- Model: MY20
- Brand: Calmara
- Material: Acrylonitrile Butadiene Styrene
- Item Weight: 9.76 ounces (0.38 lbs)
- Product Dimensions: 3.11"L x 1.57"W x 3.11"H
- Power Source: Battery Powered (Rechargeable)
- Battery Capacity: 2000mAh (7.4 volts, 5.55 watt-hours)
- Air Flow Capacity: 12 liters per minute
- Maximum Pressure: 130 PSI
- Operation Mode: Automatic
- Connector Type: USB Type-C
- Included Components: MY20 Bike Pump, Air Hose, Presta Valve Adapter, Type-C Charging Cable, Manual
Warranty and Support
The Calmara MY20 Electric Bike Pump comes with a 1-Year Manufacturer Warranty. For warranty claims, technical support, or any questions regarding your product, please contact Calmara customer service through the retailer where the product was purchased or visit the official Calmara website.
Please retain your proof of purchase for warranty validation.