Puhui T-937M Lead-Free Reflow Oven

1. Parameters

2. Configuration

3. Main Parts

Mainbody

Diagram of the main body of the T-937M reflow oven:

• Label 1: Indicates exhaust vents or fan.
• Label 2: Indicates the power switch.
• Label 3: Indicates the power input connector.

Operation Panel

Diagram of the operation panel:

• Label 1: Display screen showing temperature and status.
• Label 2: Fan speed control button or indicator.
• Label 3: Power button or status indicator.

Others

Diagram showing other components of the oven:

• Label 1: Indicator light.
• Label 2: Display screen.
• Label 3: Key or button.

Other visible components:

• Exhaust vent.
• Switch (likely power or mode).
• Power line connector.

4. Installation

1. Please place this reflow oven on a flat tabletop.
2. Please place this reflow oven in a safe environment, away from flammable or combustible materials.
3. Please ensure at least 20mm of clearance around the machine for heat dissipation.
4. The machine must be connected with an Earth wire for safety.

5. Software Interface

The T-937M reflow oven is controlled via dedicated software. The main interface includes several key areas:

• Menu bar: Contains options like File, Edit, View, etc.
• Shortcut bar: Provides quick access to common functions.
• Client drawing area: Displays the temperature profile (wave graph).
• Display setting area: Allows customization of the graph and parameters.
• Operation tip area: Shows status messages or instructions.
• T-t data wave: Represents the temperature over time graph.
• Control point: Markers on the wave graph that define the temperature profile.
• Control point line: Lines connecting control points.
• Toolbar: Contains icons for various operations.

Client Drawing Area Details:

The client drawing area visualizes the soldering profile:

• Label 1 (Temp axis): Vertical axis representing temperature (e.g., 0-250°C).
• Label 2 (Cursor): Indicates a specific point on the graph.
• Label 3 (Solder paste character wave): The target temperature profile for the solder paste.
• Label 4 (Coordinate display): Shows the current temperature and time coordinates.
• Label 5 (Time axis): Horizontal axis representing time (e.g., 0-400 seconds).
• Label 6 (Effected wave): The actual temperature profile achieved by the oven.
• Label 7 (Wave graph): The overall visual representation of temperature over time.

Shortcut Bar Functions:

• 1: Check machine memory wave.
• 2: Run the machine memory wave.
• 3: Select solder paste brand.
• 4: Select solder paste model.
• 5: Re-set viewport.
• 6: Set cycle time.
• 7: Display current oven temperature.

Display Setting Area Functions:

• 1: Control points moving direction.
• 2: Partially/completely move the control point.
• 3: Change to set control point cursor.
• 4: Save picture of the client drawing area.
• 5: Show topics or help information.
• 6: Adjust wave line width.
• 7: Paste function (e.g., paste data).
• 8: Smooth wave option.
• 9: Temp setting range.

6. Manual Instruction

i. Install RS232 Driver

Refer to the CD provided, specifically the "usb driverV3.1" folder.

ii. Install the Software

Open the provided CD. Locate and double-click the executable file named "T-937 Reflow Soldering Control System.exe" to begin the installation.

iii. Software Operation

1. Viewport Setting:

   Upon opening the software, navigate to "viewport setting". For optimal visual clarity, set the time parameter to "reflow target time +10S" and the temperature parameter to "target peak temp +20°C". Then, press "confirm".

2. Operation with PC:

   Connect the reflow oven to the computer using the provided communication line. Open the T-937M software. Access the system parameters via the menu bar: "other function" -> "system parameter". In the settings window, select "USB-SERIAL CH340 (COM**)" and press "confirm". Return to the main interface. The software should display a connection status, and the reflow oven's LCD displayer will show "connected with PC" after pressing F2 on the oven.

3. Make the Wave (Temperature Profile):

   Set the Solder Paste Character: Click on "Display setting area -> paste" to display the wave in the client drawing area. Click "display setting area -> paste user" to either select a user-defined paste character or choose one from the software's paste database.

   • a) Use the paste database from software: Select the desired paste model from the shortcut bar; its corresponding paste wave will appear in the client drawing area.
   • b) User define paste data: Navigate to "others" -> "user defined solder paste". A "user defined paste window" will appear. Input the required paste parameters and click "save". This custom wave will then be displayed in the client draw area.

   Set up the Wave:

   • a) Open the wave from machine memory: Click "menu" -> "open recipe" and select the desired wave. Tip: The machine supports 8 waves. If these do not match your solder paste, adjust them to achieve a good reflow effect.
   • b) Set up wave manually: Under the "place control points state", the mouse cursor will change. Right-click to switch between "place/check control points state". Click within the client draw area to place control points and define a new wave.

   Adjust the Wave:

   • a) Manual adjustment: Under "check control points state", double-click the client draw area to reveal control points on the wave. Move these points with the mouse to modify the wave.
   • b) Fine adjustment: Use the provided symbols [arrow symbols] to adjust the wave in different directions for faster changes. Tip: The displayed paste character wave is theoretical. Actual results may vary due to factors like heat conduction rate; adjust the wave based on the actual reflow effect for optimal soldering.

   ④ Preview the Wave: Click "operation" -> "profile preview" to review the created wave. If temperatures exceed the "T Limit" (indicated in the display setting area, No.9), the software will automatically set them to 45°C.

   ⑤ Set the Wave Heating Time: Set the heating time using the shortcut bar.

   ⑥ Save the Wave: Click "menu" -> "save recipe", enter a wave name, and press "save".

   ⑦ Manage the Wave: Click "database management" -> "recipe management" to access the wave management window.

4. Send the Wave to T-937M Reflow Oven:

   The T-937M reflow oven has 8 file areas for saving waves. If not connected to a PC, it can operate independently. After creating a wave on the computer, click "operation" -> "send to device" and select the profile number to transfer.

5. View the Waves in Machine:

   Click "view", select the profile number. The wave will display in the client drawing area, where it can be further adjusted and saved.

6. Run the Wave in Machine:

   Click "run" in the shortcut bar, select the profile number. A wave running window will appear, initiating the soldering process.

iv. Independent Operation

Panel Overview:

The oven's panel has controls for display, heating, fan, and cooling, along with function buttons F1, F2, F3, and a back button.

Interface Modes:

The system supports different interfaces:

• Chinese/English Main interface.
• Independent operation interface.

Diagrams illustrate various interfaces:

• Connection interface.
• Independent operation interface (showing options like "Execute Curve", "Select Curve", "Constant Temperature Timer").
• Wave running interface (displaying running time, set temperature, current temperature).
• Select wave interface (showing wave number and operation tips for F1, F2, F3).
• Thermostatic timer interface (displaying set temperature, set time, operation tips, current temperature, current running time).
• Main interface (performing wave, selecting wave).

Performing the Wave Interface: Shows running time, set temp, and current temp.

Selecting Wave Interface: Shows wave number and operation tips (F1/select next wave; F3/select last wave; F2: switch last/next 8 mins wave).

7. Attention

• If the machine is not used for an extended period, unplug the power line plug.
• The machine should be connected to an exhaust passage for outdoor ventilation or exhaust recovery to prevent poisoning from solder paste volatiles.
• This machine uses strict protective insulation materials; do not open the machine casually.

8. Warranty

The warranty for the main body is one year. For parts, the warranty is three months. Lifetime technical guidance is provided.

Declaration

If there is any inconsistency between this user manual and the actual product, the actual product shall govern.