WANPTEK GA Series Lab DC Switch Power Supply User Manual

1. Product Overview

The WANPTEK GA series are advanced four-window, dual-color digital display switch DC stabilized power supplies. They feature a USB fast charging output with display, allowing simultaneous monitoring of voltage and current. Designed for versatility, these units are ideal for mobile phone and computer repair, battery charging, educational settings, and production line testing. The GA series utilizes coding potentiometers for precise and continuous adjustment of output voltage and current, with the ability to pre-display set values for ease of use.

Key Features:

• Coding potentiometers for precise voltage and current setting with pre-display.
• Overload protection function, automatically stopping output on short circuit.
• Integrated USB fast charging interface with output display, supporting multiple fast charging protocols.
• Compact size, lightweight design, and sufficient power output.
• Automatic switching between Constant Voltage (CV) and Constant Current (CC) modes.
• High-accuracy four-window dual-color display for voltage and current.
• Temperature-controlled fan for efficient heat dissipation, ensuring low noise and extended lifespan.

Application Areas:

• Production line testing.
• Repair of mobile phones, computers, and other electronic appliances.
• Product aging and electroplating processes.
• Battery charging applications.
• Laboratory experiments, scientific research, and educational purposes.
• Any other applications requiring a stable DC power supply.

2. Package Contents

Please check the package contents upon receipt to ensure all items are present and undamaged.

• WANPTEK GA Series DC Power Supply Unit x 1
• Power Cord x 1 (appropriate for your region: EU, US, UK, etc.)
• Test Line x 1
• Instruction Manual x 1 (this document)

3. Safety Information

To ensure safe operation and prevent damage to the device or injury, please observe the following safety precautions:

• Always connect the power supply to a grounded outlet.
• Do not operate the device in wet or damp conditions.
• Ensure proper ventilation; do not block the fan or ventilation openings.
• Do not open the casing of the power supply. Refer all servicing to qualified personnel.
• Use only the specified fuse type (250V fuse) for replacement.
• Verify the input voltage switch setting (115V/230V) matches your local power supply before connecting.
• Avoid short-circuiting the output terminals for extended periods.

4. Setup

4.1 Unpacking and Inspection

Carefully remove the power supply from its packaging. Inspect the unit for any signs of physical damage. If any damage is found, do not proceed with setup and contact your supplier.

4.2 Input Voltage Selection

Before connecting the power supply to the mains, ensure the input voltage selector switch on the rear panel is set correctly for your region (115V or 230V). Incorrect selection can cause severe damage to the unit.

4.3 Connecting Power and Test Leads

1. Connect the provided power cord to the power input socket on the rear panel and then to a grounded AC outlet.
2. Connect the test leads to the output terminals on the front panel. The red terminal is positive (+), and the black terminal is negative (-).

5. Operating Instructions

5.1 Powering On/Off

• Press the 'POWER' button on the front panel to turn the unit on or off.

5.2 Adjusting Voltage and Current

The GA series uses coding potentiometers for precise adjustments:

• Rotate the 'VOLTAGE' knob to adjust the output voltage. The set voltage value will be pre-displayed on the screen.
• Rotate the 'CURRENT' knob to adjust the output current limit. The set current value will be pre-displayed on the screen.
• The power supply operates in either Constant Voltage (CV) or Constant Current (CC) mode, automatically switching based on the load and set limits. The display will indicate the active mode (C.V or C.C).

5.3 Digital Display

The four-window dual-color digital display provides real-time information:

• The upper white digits show the output voltage (V) and current (A).
• The lower green digits show the USB output voltage (V) and current (A).
• Indicators for Constant Voltage (C.V) and Constant Current (C.C) modes are also displayed.

5.4 USB Fast Charging Function

The integrated USB port supports various fast charging protocols. Connect your compatible device to the USB port for charging. The display will show the USB output voltage and current.

6. Maintenance

6.1 Cleaning

Ensure the power supply is turned off and disconnected from the mains before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or solvents.

6.2 Ventilation

The unit features a temperature-controlled fan for heat dissipation. Ensure that the ventilation openings on the sides and rear of the unit are not obstructed to maintain optimal performance and lifespan.

6.3 Fuse Replacement

If the power supply fails to turn on, check the fuse located near the power input on the rear panel. To replace the fuse:

1. Disconnect the power cord from the mains.
2. Carefully remove the fuse holder.
3. Replace the blown fuse with a new one of the same type and rating (250V fuse).
4. Reinsert the fuse holder and reconnect the power cord.

WARNING: Only use a 250V fuse for replacement. Using an incorrect fuse can lead to fire or damage to the unit.

7. Troubleshooting

The WANPTEK GA series power supplies are equipped with comprehensive protection features. If you encounter issues, consider the following:

• No Power: Check the power cord connection, the input voltage selector switch (115V/230V) on the rear, and the fuse (refer to Section 6.3).
• Output Stops: The unit has overload protection. If a short circuit or excessive load is detected, the output will stop. Remove the load, check for faults, and then restart the unit.
• Over Voltage Protection (OVP): If the output voltage exceeds a safe limit, the OVP will activate. Reduce the set voltage or check the load.
• Over Current Protection (OCP): If the output current exceeds the set limit, the OCP will activate. Reduce the load or increase the current limit.
• Over Temperature Protection (OTP): If the internal temperature becomes too high, the OTP will activate. Ensure proper ventilation and allow the unit to cool down.

If the problem persists after checking these points, please contact customer support.

8. Specifications

The following tables detail the specifications for the WANPTEK GA series DC power supplies:

General Specifications:

Model Specific Output:

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided by your seller or contact the point of purchase. Keep your purchase receipt as proof of purchase.

The product is designed for long-term operation at full load and includes over voltage, over current, and over temperature protection to ensure reliability.

10. User Tips

• Pre-set Values: Take advantage of the coding potentiometers to pre-set your desired voltage and current limits before connecting your sensitive load. This helps prevent accidental over-voltage or over-current conditions.
• Monitor USB Output: The dedicated display for USB output voltage and current is useful for monitoring the charging status of your devices.
• Environmental Considerations: Always operate the power supply within the specified working temperature and humidity ranges to ensure optimal performance and longevity.