1. Product Overview
The VACASSO Portable Tire Inflator CZK 3688 is a cordless air compressor designed for convenient and rapid inflation of various items, including vehicle tires (cars, SUVs, motorcycles, bikes) and sports balls. It features a digital pressure gauge, automatic shut-off, multiple preset modes, and an integrated LED flashlight.

Image 1.1: VACASSO Portable Tire Inflator with included accessories and examples of compatible items for inflation.
Package Contents:
- Portable Air Pump x1
- Type-C Charging Cable x1
- Connecting Pipe x1
- Charging Nozzles x4 (various types for different valves)
- Storage Bag x1
- Exquisite Box x1

Image 1.2: Visual representation of the VACASSO Portable Tire Inflator and all items included in the package.
2. Setup
2.1 Charging the Device
Before first use, fully charge the tire inflator. Connect the provided Type-C charging cable to the device's charging port and a suitable USB power adapter (not included). The LED display will indicate charging status. A full charge ensures optimal performance and battery life.
2.2 Attaching the Air Hose and Nozzle
- Screw the connecting pipe securely onto the air outlet of the inflator.
- Select the appropriate charging nozzle for your item (e.g., Schrader valve for car tires, Presta valve adapter for some bikes, needle for balls).
- Attach the selected nozzle to the free end of the connecting pipe.
3. Operating Instructions
3.1 Powering On and Off
- To power on: Long press the power button (U) for 3 seconds. The digital display will illuminate.
- To power off: Long press the power button (U) again for 3 seconds, or the device will automatically shut off after a period of inactivity.
3.2 Selecting Inflation Mode and Pressure Unit
- After powering on, press the mode button (C) to cycle through the preset inflation modes: Car, Motorcycle, Bike, and Ball. Each mode has a default pressure range.
- To change the pressure unit (Psi, Bar, Kpa), long press the mode button (C).

Image 3.1: Step-by-step guide for connecting the hose, selecting a preset mode, and initiating inflation.
3.3 Setting Target Pressure
- Once a mode is selected, the current pressure of the connected item will be displayed.
- Use the '+' and '-' buttons to adjust the target pressure value. The device supports up to 150 PSI.
3.4 Starting and Stopping Inflation
- To start inflation: Press the power button (U) once. The inflator will begin operating.
- Automatic Shut-off: The inflator will automatically stop once the preset target pressure is reached.
- Manual Stop: To stop inflation manually, press the power button (U) again.

Image 3.2: The inflator automatically stops when the desired pressure is achieved, allowing for hands-free operation.
3.5 Using the LED Flashlight
The device includes a built-in LED flashlight for use in low-light conditions or emergencies.
- To turn on/off the flashlight: Short press the flashlight button (usually located near the charging port or on the side).
- The flashlight can be used for night inflation, illuminating work areas, or as a signal light.

Image 3.3: The integrated LED flashlight provides illumination for various tasks, including night-time inflation or emergency lighting.
4. Maintenance
4.1 Cleaning
- Ensure the device is powered off and disconnected from any power source before cleaning.
- Wipe the exterior of the inflator with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Keep the air inlet and outlet free from dust and debris.
4.2 Storage
- Store the inflator and its accessories in the provided storage bag in a cool, dry place, away from direct sunlight and extreme temperatures.
- For long-term storage, charge the battery to approximately 50-70% every 3-6 months to maintain battery health.
4.3 Battery Care
- Avoid completely draining the battery frequently, as this can reduce its lifespan.
- If the device is not used for an extended period, ensure it is charged periodically.
5. Troubleshooting
- Device not turning on: Ensure the battery is charged. Connect to a power source and attempt to turn on after a few minutes of charging.
- Inflator not starting: Check if the target pressure is set above the current pressure. Ensure the air hose is securely connected.
- Inaccurate pressure readings: Ensure the nozzle is properly sealed to the valve stem. Calibrate the device if necessary (refer to specific instructions if available, otherwise contact support).
- Slow inflation: Check for blockages in the air hose or nozzle. Ensure the battery is sufficiently charged.
- Hose loosening during use: Ensure the connecting pipe is tightly screwed onto the inflator and the nozzle is firmly attached to the valve stem before each use.
- Battery not recharging: If the battery has been deeply discharged, it may require a specific charging sequence or replacement. Ensure the charging cable and adapter are functional.
6. Specifications
| Feature | Specification |
|---|---|
| Brand | VACASSO |
| Model Name | CZK 3688 |
| Maximum Operating Pressure | 150 PSI |
| Voltage | 5 Volts |
| Power Source | Battery Powered |
| Battery Type | Lithium Ion (2 C batteries included) |
| Item Weight | 1.5 Pounds |
| Material | Metal, Plastic |
| Special Features | Quick Inflation, Cordless, Portable, Pressure Detection, Automatic Shut-Off, Digital Display, LED Light, Lightweight |
| Included Components | Portable Air pump, Type-C Charging cable, Connecting pipe, Charging nozzle (x4), Storage bag, Exquisite box |
7. Warranty Information
Specific warranty details for the VACASSO Portable Tire Inflator CZK 3688 are not provided in this manual. Please refer to the product packaging, the seller's website, or your purchase documentation for information regarding warranty coverage and terms.
8. Customer Support
For technical assistance, product inquiries, or support, please contact the VACASSO customer service team through the contact information provided on your product packaging or the official VACASSO website. When contacting support, please have your product model number (CZK 3688) and purchase details ready.




