1. Introduction
The ATTEN AT-8502D is an intelligent, lead-free 2-in-1 digital rework station, combining a hot air rework station and a soldering station. Designed for versatility and precision, it is ideal for R&D, production, and scientific research laboratories. Its user-friendly interface and space-saving design make it a valuable tool for various electronic repair and assembly tasks.

Figure 1: ATTEN AT-8502D Digital Rework Station
2. Key Features
- 2-in-1 Design: Combines a hot air station and a soldering station, optimizing workspace.
- High Power: Hot air station with 550W for rapid heating and high efficiency; Soldering station with 50W for quick heating and temperature recovery.
- Dual LCD Display: Provides clear, visualized operation with accurate temperature and airflow readings.
- Precise Control: MCU precise temperature control function ensures stable and accurate temperature.
- Diaphragm Pump: High-power diaphragm pump suitable for a wide variety of nozzles.
- Memory Function: Three sets of shortcut air volume/temperature settings to simplify operations and allow quick recall of preferred settings.
- Temperature Calibration: Supports temperature calibration within a range of ±50°C.
- Energy Saving: Features auto-sleep and auto-standby functions, with a built-in sleep sensor in the hot air gun handle.
- Flexible Operation: Hot air gun handle can be installed on either the left or right side.
- Temperature Units: Supports switchable °C and °F display.
- Safety Features: Intelligent cooling system and deferred power-off function. Cold air function to cool components. Error/fault indications for 'H-E' and 'S-E'.
3. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged:
- ATTEN AT-8502D Main Unit
- Hot Air Gun Handle
- Soldering Iron Handle
- Hot Air Nozzles (various types, e.g., A-1126, A-1125, A-1130, A-1170)
- Soldering Iron Tips (various types, e.g., T900-0.5C, T900-4C, T900-0.8D, T900-1.2D, T900-LB, T900-0.8C, T900-2C, T900-1.6D, T900-B, T900-IS, T900-1C, T900-SB, T900-2.4D, T900-SK, T900-I, T900-3C, T900-K, T900-SI)
- Soldering Iron Stand with cleaning sponge
- Power Cord
- User Manual

Figure 2: Included Components
4. Setup Instructions
- Unpacking: Carefully remove all components from the packaging. Retain the packaging for future storage or transport.
- Placement: Place the main unit on a stable, heat-resistant, and well-ventilated surface. Ensure there is adequate space around the unit for airflow.
- Connect Hot Air Gun: Connect the hot air gun handle to the designated port on the main unit. Ensure the connection is secure.
- Connect Soldering Iron: Connect the soldering iron handle to its designated port on the main unit. Place the soldering iron in its stand.
- Power Connection: Connect the power cord to the main unit and then to a suitable power outlet (110V or 220V, depending on your model).
- Nozzle/Tip Installation: Select the appropriate hot air nozzle for your task and securely attach it to the hot air gun. For the soldering iron, ensure a suitable tip is installed.

Figure 3: Hot Air Gun Nozzles
5. Operating Instructions
5.1. General Operation
- Power On: Flip the main ON/OFF switch on the front panel to the 'ON' position. The dual LCD displays will illuminate.
- Mode Selection: The unit features separate controls for the hot air rework station and the soldering station.
5.2. Hot Air Station Operation

Figure 4: Front Panel Controls
- Activate Hot Air: Press the left 'POWER' button to activate the hot air station.
- Adjust Air Flow: Use the 'UP' and 'DOWN' buttons below the 'SMD REWORK' display to adjust the air flow (020-100 grades).
- Adjust Temperature: Press the 'SET' button to switch to temperature settings. Use the 'UP' and 'DOWN' buttons to increase or decrease the temperature (100°C-500°C). Press 'SET' again to confirm and exit.
- Memory Function: The hot air station has 3 memory channels. Short press the left 'POWER' button and '1', '2', or '3' to quickly use a stored temperature. Long press the left 'POWER' button and '1', '2', or '3' to store the current temperature and air flow settings.
- Standby Mode: When the hot air gun handle is placed on its holder, the station will automatically enter sleep status ('SLP') and cool down. Picking up the handle will reactivate it.
- Cold Air Function: The unit can switch between hot and cold air. Refer to the video demonstration for specific button presses.
5.3. Soldering Station Operation
- Activate Soldering Iron: Press the right 'POWER' button to activate the soldering station.
- Adjust Temperature: Press the 'SET' button to switch to temperature settings. Use the 'UP' and 'DOWN' buttons to increase or decrease the temperature (200°C-480°C). Press 'SET' again to confirm and exit.
- Memory Function: The soldering station has 3 memory channels. Short press the right 'POWER' button and '1', '2', or '3' to quickly use a stored temperature. Long press the right 'POWER' button and '1', '2', or '3' to store the current temperature.
5.4. Temperature Unit Switching (°C/°F)
To switch between Celsius and Fahrenheit, simultaneously press the 'UP', 'DOWN', 'SET' buttons, and the main ON/OFF switch button.
5.5. Temperature Compensation
The temperature compensation setting is ±50°C. To enter this setting, press the hot air gun handle's 'X' button and the left 'POWER' button simultaneously. Use 'UP' to increase and 'DOWN' to decrease the compensation value. Press 'SET' to confirm and exit. Calibration is required when replacing the heater or handle.
6. Maintenance
- Cleaning: Regularly clean the hot air gun nozzles and soldering iron tips to ensure optimal performance. Use a damp sponge for soldering tips and a brush for nozzles.
- Tip Care: Always tin the soldering iron tip before storing it to prevent oxidation. Replace worn or damaged tips promptly.
- Nozzle Care: Ensure hot air nozzles are free from debris. Replace if bent or damaged to maintain proper airflow.
- General Cleaning: Keep the main unit clean and free of dust. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the unit in a dry, dust-free environment.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on | No power supply; Power cord loose; Main switch off | Check power outlet; Ensure power cord is securely connected; Turn main switch ON |
| Hot air gun not heating | Heater element failure; Connection issue; Incorrect settings | Check hot air gun connection; Verify temperature settings; Contact support if heater element is faulty |
| Soldering iron not heating | Heater element failure; Connection issue; Incorrect settings | Check soldering iron connection; Verify temperature settings; Contact support if heater element is faulty |
| Display shows "H-E" or "S-E" | Heater or sensor error | Turn off the unit, check connections, and restart. If error persists, contact technical support. |
| Inconsistent temperature readings | Needs calibration; Faulty sensor | Perform temperature calibration as per section 5.5; Contact support if sensor is faulty |
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | AT-8502D |
| Brand | ATTEN |
| Hot Air Station Power | 550W |
| Soldering Station Power | 50W |
| Hot Air Temperature Range | 100°C - 500°C (212°F - 932°F) |
| Soldering Iron Temperature Range | 200°C - 480°C (392°F - 896°F) |
| Air Flow Adjustment | 020-100 grades |
| Temperature Compensation | ±50°C |
| Voltage | 110V / 220V (selectable) |
| Display Type | Dual LCD |
| Certification | CE |
| Origin | Mainland China |
9. User Tips
- Always wear appropriate personal protective equipment, including safety glasses and heat-resistant gloves, when operating the rework station.
- Ensure your workspace is well-ventilated to dissipate fumes from soldering and desoldering.
- Regularly clean and tin your soldering iron tips to prolong their lifespan and ensure efficient heat transfer.
- Utilize the memory preset functions for frequently used temperature and airflow combinations to save time and ensure consistent results.
- When desoldering sensitive components with the hot air gun, use the lowest effective temperature and airflow to prevent damage to surrounding components or the PCB.
10. Warranty and Support
The ATTEN AT-8502D Digital Rework Station comes with a standard manufacturer's warranty. For specific warranty terms, duration, and conditions, please refer to the warranty card included in your product packaging or contact the seller/manufacturer directly.
For technical support, service, or inquiries regarding your product, please reach out to the authorized ATTEN service center or your point of purchase. Ensure you have your product model number and purchase details ready when contacting support.





