1. Introduction
This manual provides detailed instructions for the proper use, setup, operation, and maintenance of your Cressi Donatello Dive Computer. The Donatello is a versatile dive computer designed for recreational diving, offering four distinct operating modes: Air, Nitrox, Gauge, and Apnea. Please read this manual thoroughly before using the device to ensure safe and effective operation.
2. Safety Information
Diving involves inherent risks. The Cressi Donatello Dive Computer is a tool to assist in dive planning and execution, but it does not replace proper dive training, experience, or judgment. Always dive within the limits of your training and certification. Failure to follow these safety guidelines can result in serious injury or death.
- Never exceed your certified depth limits.
- Always perform a safety stop.
- Do not dive alone.
- Regularly check your equipment before each dive.
- Understand and follow all decompression limits indicated by the computer.
- Do not attempt to open the computer case underwater.
- Ensure the battery is properly installed and has sufficient charge before diving.
3. Product Overview
The Cressi Donatello is a robust and user-friendly dive computer featuring a large, high-contrast display and a single multi-function button for intuitive navigation. Its ergonomic design ensures comfort on the wrist.
3.1 Key Features
- Large, high-contrast display for clear readability underwater.
- Single multi-function button for simplified menu navigation.
- Four operating modes: Air, Nitrox, Gauge, and Apnea.
- Cressi RGBM algorithm for comprehensive dive data processing.
- User-replaceable battery (CR2430).
- Logbook function storing up to 50 dives per category.
- Durable case and two-tone TPU rubber wristband with stainless steel buckle.
3.2 Components
Figure 1: Front view of the Cressi Donatello Dive Computer, displaying current depth, no-decompression limit, and dive time.
Figure 2: Overview of key features including Air, Nitrox, Gauge, Apnea programs, depth rating up to 150 meters, easy access menu, and replaceable battery.
Figure 3: Detailed view highlighting the heavy-duty case, single steel button, high-contrast display with extra-large numbers, and graphic indicator for CNS oxygen toxicity.
4. Setup
4.1 Initial Activation
The Donatello Dive Computer typically comes pre-installed with a battery. Upon first use, the device should activate automatically. If not, press and hold the single button for a few seconds to power it on.
4.2 Basic Settings Configuration
Upon initial activation or after a battery change, you may need to configure basic settings such as units of measurement (metric/imperial), time, and date. Use the single button to navigate through the menu options and confirm selections. Refer to the 'Operating Modes' section for general button navigation.
4.3 Battery Installation/Replacement
The Cressi Donatello features a user-replaceable CR2430 battery. To replace the battery:
- Ensure the computer is dry and clean.
- Locate the battery compartment cover on the back of the unit.
- Using a coin or appropriate tool, carefully unscrew the battery cover counter-clockwise until it can be removed.
- Remove the old CR2430 battery.
- Insert a new CR2430 battery with the positive (+) side facing up.
- Inspect the O-ring seal for any dirt, damage, or signs of wear. Replace if necessary.
- Carefully place the battery cover back on, ensuring the O-ring is correctly seated.
- Screw the cover clockwise until it is finger-tight. Do not overtighten.
- After replacement, check for proper sealing and functionality.
Figure 4: Illustration of the user-replaceable battery compartment on the back of the dive computer, alongside descriptions of the Air/Nitrox, Free (Apnea), and Gauge programs.
5. Operating Modes
The Cressi Donatello offers four distinct operating modes, each tailored for specific diving activities. The single button is used for navigation and selection.
5.1 General Button Navigation
- Short Press: Scrolls through information or menu options.
- Long Press: Enters a menu, confirms a selection, or switches modes (depending on context).
5.2 Air Mode
This mode is for diving with standard compressed air. It calculates no-decompression limits, ascent rates, and safety stops based on the Cressi RGBM algorithm. Key information displayed includes current depth, maximum depth, no-decompression time, dive time, and temperature.
5.3 Nitrox Mode
For diving with enriched air nitrox mixtures. Before diving in Nitrox mode, you must set the oxygen percentage (FO2) and partial pressure of oxygen (PO2) limit according to your dive plan. The computer will then calculate decompression limits accordingly, also displaying CNS oxygen toxicity levels.
5.4 Gauge Mode
This mode functions as a bottom timer, providing current depth, maximum depth, average depth, and dive time in minutes and seconds. It does not provide decompression information, making it suitable for technical diving where divers manage their own decompression. Always use a separate, reliable timing device in this mode.
5.5 Apnea Mode (Free Diving)
Designed for freediving, this mode displays real-time depth, maximum depth, dive time, and surface interval. It tracks consecutive dives and surface recovery times, which are crucial for freediving safety.
6. Maintenance
6.1 Cleaning and Storage
- After each dive, rinse the computer thoroughly with fresh water to remove salt, sand, and chlorine.
- Allow the computer to air dry completely before storage.
- Store the computer in a cool, dry place, away from direct sunlight and extreme temperatures.
- Avoid contact with solvents, chemicals, or sharp objects that could damage the display or casing.
6.2 Battery Care
Regularly check the battery indicator. Replace the battery as soon as the low battery warning appears. Always use a new, high-quality CR2430 battery. Ensure the O-ring is clean and properly seated during battery replacement to maintain water integrity.
7. Troubleshooting
If you encounter issues with your Cressi Donatello Dive Computer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Computer does not turn on. | Dead or improperly installed battery. | Replace battery (CR2430) and ensure correct polarity. |
| Display is dim or unreadable. | Low battery or extreme temperature. | Replace battery. Ensure operating within specified temperature range. |
| Inaccurate depth readings. | Sensor obstruction or malfunction. | Rinse thoroughly with fresh water. If problem persists, contact Cressi support. |
| Water ingress. | Improperly sealed battery compartment or damaged O-ring. | Immediately rinse with fresh water and dry. Do not use. Contact Cressi support for inspection/repair. |
For issues not listed here or if troubleshooting steps do not resolve the problem, please contact Cressi customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | KS860022 |
| Color | Black/Blue |
| Size | One Size |
| Display Format | 4.7 Inch |
| Product Dimensions (L x W x H) | 12.7 x 11.94 x 12.95 cm (5 x 4.7 x 5.1 inches) |
| Weight | 181.44 g (0.4 lbs) |
| Material Type | Other (Durable composite) |
| Included Components | 1 Dive Computer |
| Battery Type | 1 x CR2430 (included) |
| UPC | 810026124884 |
| Sport | Diving |
9. Warranty and Support
The Cressi Donatello Dive Computer is covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official Cressi website. For technical support, service, or warranty claims, please contact Cressi customer service through their official channels.
Availability of spare parts in the EU is guaranteed for 2 years from the date of first availability.
