1. Introduzione
This instruction manual provides essential information for the safe and proper use of your KFD 12V-24V DC Adapter. This adapter is designed to power and charge compatible portable oxygen concentrators from a vehicle's DC power outlet. Please read this manual thoroughly before use and retain it for future reference.
2. Informazioni sulla sicurezza
Osservare le seguenti precauzioni di sicurezza per evitare lesioni o danni al dispositivo:
- Assicurarsi che il volume dell'adattatoretage and current ratings match your device's requirements. This adapter provides 24V DC output.
- Non esporre l'adattatore ad acqua, umidità o temperature estreme.
- Evitare di far cadere o di sottoporre l'adattatore a urti violenti.
- Do not attempt to disassemble or modify the adapter. Refer servicing to qualified personnel.
- Unplug the adapter from the vehicle's power outlet when not in use or before cleaning.
- Tenere fuori dalla portata dei bambini.

Figura 2.1: The KFD DC Adapter incorporates multiple protection features for safe operation, including safeguards against overload, overcharge, short circuits, excessive current, overheating, and power fluctuations.
3. Prodotto finitoview
The KFD DC Adapter is a compact and efficient power supply designed for portable oxygen concentrators in vehicles. It features a standard car cigarette lighter plug for input and a barrel connector for output.

Figura 3.1: The KFD DC Adapter, showing the main converter unit, the car charger plug, and the output barrel connector.
4. Configurazione e connessione
Follow these steps to connect your KFD DC Adapter:
- Verifica compatibilità: Ensure your oxygen concentrator requires a 24V DC input and has a compatible barrel connector. This adapter is specifically designed for Inogen Rove 6, Inogen One G5, and Oxygo Next models.
- Presa di corrente del veicolo: Insert the car charger plug firmly into your vehicle's 12V-24V DC power outlet (cigarette lighter socket).
- Connetti al dispositivo: Connect the barrel connector end of the adapter to the DC input port of your portable oxygen concentrator.
- Accensione: Once connected, your oxygen concentrator should begin to receive power or charge its battery, depending on its operational status.

Figura 4.1: The car charger plug features a non-slip shrapnel design for a secure connection in vehicle power outlets.
5. Istruzioni per l'uso
Once connected, the KFD DC Adapter will provide continuous power to your compatible oxygen concentrator. It is designed for use in various vehicles, including cars, trucks, and boats, supporting 12V to 24V DC input.

Figura 5.1: The adapter in use, providing power from a vehicle's DC outlet.
5.1. Compatibilità
This KFD DC Adapter is compatible with the following oxygen concentrator models:
- Inogen Rove 6 Oxygen Concentrator IO-501
- Inogen One G5 Oxygen Concentrator (Models: BA-501, IO-500, I0-500, 10-500, BA-503, BA503, BA-500, BA-516, BA501, BA500, BA516)
- Oxygo Next Portable Oxygen Concentrator (POC) Model: 1400-3000, SKU Part #: 1400-1050
Nota importante: Questo adattatore è NON compatible with Inogen One G2, G3, G4 Oxygen Concentrators (which require 19V versions) or Inogen One G2, G3, G4, G5 External Battery Chargers.

Figura 5.2: Visual representation of compatible oxygen concentrators and an example of an incompatible external battery charger.
6. Manutenzione
To ensure optimal performance and longevity of your KFD DC Adapter:
- Pulizia: Use a dry, soft cloth to clean the adapter. Do not use liquid cleaners or solvents.
- Magazzinaggio: Store the adapter in a cool, dry place when not in use. Avoid wrapping the cable too tightly.
- Sostituzione fusibile: The car charger plug contains a replaceable fuse for protection. If the adapter stops working, the fuse may need replacement.
6.1. Fuse Replacement Procedure
To replace the fuse in the car charger plug:
- Unplug the adapter from the vehicle's power outlet.
- Rotate the tip of the car charger plug counter-clockwise to unscrew it.
- Carefully remove the old fuse and replace it with a new fuse of the same rating (e.g., 5A).
- Screw the tip back on clockwise until secure.

Figura 6.1: Instructions for replacing the fuse within the car charger plug.
7. Risoluzione Dei Problemi
If you encounter issues with your KFD DC Adapter, refer to the following common problems and solutions:
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Adapter not providing power | Collegamento allentato Fusibile bruciato Vehicle power outlet issue Dispositivo incompatibile | Assicurarsi che tutti i collegamenti siano sicuri. Check and replace the fuse (refer to Section 6.1). Test the vehicle power outlet with another device. Verificare la compatibilità del dispositivo (fare riferimento alla Sezione 5.1). |
| Device not charging/powering efficiently | High power demand from device Basso volume del veicolotage | Ensure the concentrator is not operating at maximum settings if battery charging is slow. Check vehicle battery health. |
| L'adattatore risulta caldo durante l'uso | Funzionamento normale Sovraccarico | A slight warmth is normal. If it's excessively hot, disconnect immediately and check for compatibility or device malfunction. |
8. Specifiche
Key technical specifications for the KFD DC Adapter:
- Ingresso: DC 12V-24V (9-32V DC Max)
- Produzione: 24V DC, 5A, 120W Max
- Tipo di connettore: Connettore a cilindro
- Lunghezza totale del cavo: 2.6 metri (circa 8.5 piedi)
- Caratteristiche di protezione: oltre il volumetage Protezione (OVP), Protezione da sovracorrente (OCP), Protezione da cortocircuito (SCP)
- Certificazioni: Certificazione CE, FCC, RoHS
- Dimensions (Converter Unit): Circa 90 mm x 36 mm x 26 mm (3.54 pollici x 1.42 pollici x 1.02 pollici)
- Peso: Circa 10.2 once

Figura 8.1: Product label displaying electrical specifications and certifications.

Figura 8.2: Physical dimensions of the KFD DC Adapter components.
9. Garanzia e supporto
KFD products are certified and come with a warranty to ensure customer satisfaction.
- Garanzia: 30 Days Free Exchange / 36 Months Warranty.
- Assistenza clienti: For any questions, technical assistance, or warranty claims, please contact KFD customer service through the retailer where the product was purchased.