Diesel Heater Maintenance Manual

1. Cleaning and maintenance before storage
1. **Clean the exterior**
- Wipe the body with a dry cloth to remove dust and oil.
- Check the air inlet and outlet to ensure there is no obstruction (such as debris, snow, etc.).
2. **Check the fuel system**
- Make sure there is no leakage in the fuel tank and the fuel line connections are secure.
- Drain any water or impurities from the bottom of the tank
3. **Check the ignition system**
- Check the ignition needle and combustion chamber for carbon deposits.
- If ignition is difficult, it may be due to carbon deposits or gap problems on the electrodes, which need to be adjusted or replaced.
4. **Run Test**
- Allow the equipment to idle for 90 seconds before shutting down to avoid carbon deposits caused by sudden shutdown.
2. Regular maintenance (monthly or every 50-100 hours of operation)**
1. **Replace the fuel filter**
- Replace the filter regularly according to the frequency of use (recommended every season or every 500 hours).
2. **Cleaning the combustion chamber**
- Remove the burner and use a soft brush to remove carbon deposits to avoid affecting combustion efficiency.
3. **Check the fan and motor**
- Clean the dust from the fan blades and check the lubrication of the bearings (add high-temperature lubricating oil if necessary).
4. **Circuit inspection**
- Check whether the wires are aging and the connectors are loose to avoid the risk of short circuit.
3. Seasonal maintenance (long-term disuse or season change)**
1. **Fuel system treatment**
- Drain remaining fuel in the tank or add fuel stabilizer to prevent deterioration.
- Clean the oil pump and nozzle to avoid colloid blockage.
2. **Rust-proof treatment**
- Apply anti-rust oil to the rust-prone parts of the metal casing.
- Store in a dry and ventilated place, avoid moisture.

4. Common troubleshooting**
| **Failure symptoms** | **Possible causes** | **Solutions**
| Failure to ignite | Low fuel/faulty/blocked spark plug | Check fuel level, clean spark plug or replace |
| Black smoke | Incomplete combustion/insufficient air intake | Clean combustion chamber, check air filter |
| Excessive noise | Fan loose/bearing lacks oil | Tighten screws and lubricate bearings |
| Insufficient heat output | Filter clogged/poor fuel quality | Replace filter element, use graded diesel |
5. Safety precautions**
1. Be sure to stop the machine and disconnect the power supply/oil circuit before maintenance.
2. Operation in confined spaces is prohibited.
3. Use original accessories and do not modify the fuel system.
4. Waste oil/filter element shall be handled in accordance with environmental protection requirements.
**hint**:
- It is recommended to have a comprehensive inspection by a professional technician every year.
- Record the date and content of each maintenance to facilitate tracking of equipment status.

For more detailed component disassembly or model specific instructions.