1. Introduction
Welcome to the user manual for your Teffim CZK-3690 Portable Tire Inflator. This device is engineered for convenient and efficient inflation of various items, including car, motorcycle, and bicycle tires, as well as sports equipment and other inflatables. Please read this manual thoroughly before use to ensure safe and optimal operation of your device.
2. Product Overview
Key Features
- Portable Design: Compact and lightweight air compressor perfect for on-the-go tire inflation and maintenance.
- Versatile Use: Suitable for inflating car tires, bike tires, sports equipment, and other inflatables.
- Easy Operation: Simple controls and clear pressure gauge for precise inflation to desired PSI levels.
- Convenient Storage: Includes storage compartment for accessories and power cord management.
- Power Source: Plugs into standard 12V car outlet for reliable power whenever you need it.
- Automatic Shut-Off: Automatically stops inflation once the preset pressure is reached.
- Digital Display: Clear digital screen for monitoring pressure.
- LED Light: Integrated LED light for illumination in low-light conditions or emergencies.
Package Contents
- Teffim CZK-3690 Portable Air Compressor
- Air Hose with Quick Connect Valve
- 12V DC Car Power Cord
- USB-A to USB-C Charging Cable
- Inflation Nozzles (for various applications like balls, bicycles, etc.)
- Carrying Case/Storage Bag

3. Safety Information
To ensure safe operation and prevent injury or damage, please observe the following safety guidelines:
- Always keep the device out of reach of children.
- Do not overinflate tires or other items. Always refer to the manufacturer's recommended pressure.
- Do not operate the inflator in wet conditions or near flammable liquids or gases.
- Avoid prolonged continuous operation to prevent overheating. Allow the device to cool down between uses if necessary.
- Disconnect the power source when the device is not in use or during maintenance.
- Ensure the air hose is securely connected to both the inflator and the item being inflated before starting.
- Use only the provided accessories and power cords.
4. Setup
Connecting the Air Hose and Nozzle
- Screw the air hose securely into the designated port on the top of the inflator unit.
- Select the appropriate inflation nozzle for your item (e.g., car tire valve, bicycle valve, ball needle).
- Attach the selected nozzle to the free end of the air hose.
- Connect the nozzle firmly to the valve of the item you wish to inflate.

Powering the Device
The Teffim CZK-3690 can be powered in two ways:
- Internal Battery: For cordless operation, ensure the internal battery is charged.
- 12V DC Car Outlet: For continuous power, connect the provided 12V car adapter to your vehicle's cigarette lighter socket and then to the inflator.

5. Operating Instructions
Power On/Off
- To power on, press and hold the power button (usually the central orange button) for approximately 2 seconds until the digital display illuminates.
- To power off, press and hold the power button again for 2 seconds. The device will also automatically shut off after a period of inactivity.
Selecting Inflation Mode
The inflator offers multiple preset modes for different items:
- Press the 'Mode' button (often indicated by an 'M' or a cycle icon) to cycle through available modes: Car, Motorcycle, Bicycle, Ball, and Custom.
- Each mode has a default pressure setting, which can be adjusted.

Setting Desired Pressure
- Once a mode is selected, use the '+' and '-' buttons to increase or decrease the target pressure (PSI, BAR, or KPA).
- The current pressure of the connected item will be displayed, allowing you to monitor the inflation process.
Starting and Stopping Inflation
- After setting the desired pressure, press the power button once to start inflation.
- The inflator will automatically stop once the preset pressure is reached.
- To manually stop inflation at any time, press the power button again.
Using the LED Light
- The integrated LED light can be activated by a dedicated button (refer to device for exact button location).
- Press once for steady illumination, and additional presses may cycle through SOS flashing modes for emergencies.

6. Maintenance
- Cleaning: Wipe the exterior of the inflator with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the device and its accessories in the provided carrying case in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery Care: If the device is not used for an extended period, charge the battery periodically (e.g., every 3-6 months) to maintain battery health.
- Hose Inspection: Regularly inspect the air hose and nozzles for any signs of wear, cracks, or damage. Replace if necessary.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on | Low battery or no power connection. | Charge the battery or connect to a 12V car outlet. Ensure the power button is held for 2 seconds. |
| Inflator not inflating | Hose not securely connected, wrong mode selected, or target pressure not set. | Check hose connections. Select the correct inflation mode and set a target pressure higher than the current pressure. |
| Inaccurate pressure reading | Loose connection or sensor issue. | Ensure the nozzle is tightly connected to the valve. If the issue persists, contact support. |
| Device overheats | Prolonged continuous use. | Turn off the device and allow it to cool down for at least 10-15 minutes before resuming use. |
8. Specifications
| Specification | Detail |
|---|---|
| Brand | Teffim |
| Model Name | CZK-3690 |
| Voltage | 12 Volts |
| Power Source | 12V DC Vehicle Power |
| Maximum Operating Pressure | 150 PSI |
| Noise Level | 75 Decibels |
| Maximum Power | 150 Watts |
| Air Flow Capacity | 35 Liters Per Minute |
| Hose Length | 24 Inches |
| Product Dimensions | 8.5"L x 6"W x 8"H |
| Item Weight | 1.7 pounds |
| Material | ABS Plastic, Metal |
| Special Features | Automatic Shut-Off, Digital Display, LED Light, Portable Design, Quick Connect Valve |
9. Warranty and Support
Warranty Information
The Teffim CZK-3690 Portable Tire Inflator comes with a 2-Year Manufacturer Warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
Customer Support
For any questions, technical assistance, or warranty claims, please contact Teffim customer support through the retailer's platform or visit the official Teffim website for contact details. Our support team is available to assist you with any issues you may encounter.





