1. Introduction
Thank you for purchasing the Silverflo T12 Soldering Station 706-II. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your device. Please read it carefully before use and keep it for future reference.
The Silverflo 706-II is an ESD-safe, 2-in-1 rework station featuring both a hot air gun and a T12 soldering iron. It is designed for a wide range of applications including:
- Soldering and desoldering of various components such as SOIC, CHIP, QFP, PLCC, BGA, SMD, and FFC/FPC.
- Heat shrinking, drying, paint removal, adhesive removal, defrosting, pre-heating, and glue soldering.
2. Safety Precautions
- Always ensure the unit is properly grounded.
- Do not operate the station in a flammable or explosive environment.
- Avoid direct contact with hot surfaces or hot air to prevent burns.
- Always turn off the power and unplug the unit when not in use or before performing maintenance.
- Ensure proper ventilation in your workspace.
- Keep the air outlet clear and free of blockages at all times.
- Do not use metal files to clean the soldering iron tip.
- Do not apply excessive force on the soldering iron tip when soldering.
- When replacing the heating element, ensure correct wiring order and colors.
3. Setup
3.1 Unpacking and Initial Preparation
Before transportation, the compressor motor is secured with a locking bolt (located at the bottom of the station). Before initial use, this locking bolt MUST be removed. Failure to remove it will result in serious consequences.
3.2 Component Assembly
- Hot Air Gun Holder: Place the hot air gun holder on the left side of the station.
- Nozzle Installation: Select the appropriate nozzle for your task. It is recommended to use nozzles with larger diameters. Install the nozzle correctly, ensuring it is done only when the steel pipe and nozzle have cooled. Do not use brute force or tweezers to install/remove.
- Soldering Iron Connection: Connect the soldering iron to the receptacle on the station.
- Power Connection: Connect the station's power cord to a suitable electrical outlet.

4. Operation
4.1 Control Panel Overview
The control panel features dual LED displays for hot air and soldering temperatures, along with adjustment knobs and mode switches.

4.2 Hot Air Rework Station Operation
- Power On: Turn ON the master switch at the rear, then turn ON the hot air rework station's power switch. The temperature display will show "---" indicating standby mode.
- Temperature & Airflow Adjustment: Use the temperature adjustment knob to set the desired temperature and the air volume adjustment knob for airflow.
- Operating Modes (Auto/Manual): Use the Manual/Automatic Mode Switch Button to toggle between modes.
- Automatic Mode: When the hot air gun is placed back in its holder, the heating element turns OFF, and the unit enters standby mode (display shows "---").
- Manual Mode: The hot air gun continues to heat and operate even when placed in the holder.

Figure 3: Hot Air Gun Auto/Manual Mode. In Auto mode, the gun stops when placed on holder. In Manual mode, it continues to run. - Cool/Hot Air Mode (706+ models): After starting the hot air gun, press its switch. The temperature will decrease. When it cools below 70°C (158°F), the display shows "COL" for Cool Air mode. Press the switch again to return to Hot Air mode.
- Operation: Once the temperature stabilizes (indicated by rapid blinking of the operation indicator light), you can begin rework. The precision PID program ensures stable and precise thermostatic control.
- Shutdown: After operation, place the hot air gun back in its holder. In Automatic mode, it will cool down and enter standby. In Manual mode, manually turn off the hot air switch. For extended non-use, turn off the master switch and disconnect the power cord.
4.3 Soldering Station Operation
- Power On: Turn ON the master switch at the rear, then turn ON the soldering station's power switch. The heating element will begin heating.
- Temperature Adjustment: Use the temperature adjustment knob to set the desired temperature.
- First Use Tip Tinning: For the first use, set the temperature to 250°C (482°F). Once the iron is hot enough to melt solder, coat the tip with a layer of rosin core solder. Then, adjust to your desired working temperature.
- Operation: Once the temperature stabilizes (indicated by rapid blinking of the operation indicator light), you can begin soldering.
- 10-Minute Sleep Mode (706II/706+ models): If the soldering iron is static and unused for 10 minutes, it automatically enters sleep mode, reducing the temperature to 200°C (392°F) to prevent tip oxidation and extend lifespan.
To wake up: Gently shake the soldering iron a few times, or turn the power OFF and then ON again. - °C/°F Conversion: Use the °F/°C Temperature Display Switch to toggle between Fahrenheit and Celsius display modes.


5. Maintenance
5.1 Hot Air Rework Station Maintenance
- Keep the air outlet clear and free of blockages.
- Install and remove nozzles only when the steel pipe and nozzle have cooled. Do not use excessive force.
- The wide-diameter silicon rubber hose effectively ensures air-tightness and maintains stable airflow.

5.2 Soldering Station Maintenance
- Tip Cleaning: After each operation, use a wet sponge or metal wool ball to clean the soldering iron tip. Tin the tip with a new layer of solder to prevent oxidation.
- Oxidized Tips: If a layer of oxidation forms, gently rub the tip inside a metal wool ball (with the temperature set to 300°C/572°F) while applying solder until the tip is fully coated. If severely oxidized, replace the tip.
- Avoid Filing: Do not use metal files to remove oxidation, as this can damage the tip.
- Idling Temperature: When placing the soldering iron back in its holder after high-temperature operation, adjust the temperature to 250°C (482°F) or below for idling. This prevents accelerated aging of the heating element and extends its lifespan.

6. Troubleshooting
- "S-E" Error Display:
- This indicates that the station's sensor module is faulty, or the soldering iron is not connected. You may need to replace the heating element (which includes the sensor module).
- Heating Element Replacement:
- When replacing the heating element, ensure to note the original connecting order and colors of the wires, as they must not be connected incorrectly.
- "SLP" Error Display:
- This indicates that the soldering station is in sleep mode. Refer to the "10-Minute Sleep Mode" section for how to wake it up.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | 706II |
| Rated Power | 670W |
| Control Unit Dimensions | L253 x W186 x H124mm ±5mm |
| Operating Ambient Temperature | 0~40°C / 32~104°F |
| Hot Air Rework Station | |
| Air Delivery | Compressor Motor |
| Air Volume | ≤168L/min |
| Temperature Range | 100~480°C / 212~896°F |
| Display | LED |
| Soldering Station | |
| Temperature Range | 200~480°C / 392~896°F |
| Display | LED |
| Tip to ground resistance | <2 ohms |

7.1 Hot Air Nozzle Styles (for reference)
The station supports various nozzle styles, with sizes matching corresponding IC sizes. Examples include QFP, PLCC, SOP, and single-tube nozzles.

8. User Tips
- Tip Care is Key: Always keep your soldering iron tip clean and properly tinned to ensure efficient heat transfer and extend its lifespan.
- Nozzle Selection: Choose the correct nozzle size for your hot air rework tasks to ensure precise heating and prevent damage to surrounding components.
- Temperature Control: Utilize the dual temperature displays and precise controls to maintain optimal temperatures for both soldering and hot air rework.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the Silverflo Official Store or the manufacturer directly. Refer to your purchase documentation for specific warranty terms and contact details.
A PDF version of the user manual is available for download: Download User Manual (PDF)