Introduction
This manual provides essential instructions for the safe and effective operation of your VOLTCRAFT AT-400 NV 400W Step-Up/Step-Down Transformer. This device is designed to convert AC voltage between 115V and 240V, allowing electrical appliances to be used across different regional power standards. Please read this manual thoroughly before use and retain it for future reference.
Safety Instructions
- Always ensure the transformer is placed on a stable, flat surface with adequate ventilation.
- Do not expose the transformer to moisture, rain, or extreme temperatures.
- Before connecting any appliance, verify that its power consumption does not exceed the transformer's 400W capacity.
- Ensure the voltage selector switch is set correctly for the desired output voltage before powering on. Incorrect settings can damage connected devices.
- Disconnect the transformer from the power supply before cleaning or performing any maintenance.
- Do not attempt to open or repair the transformer yourself. Refer all servicing to qualified personnel.
- Keep out of reach of children.
Setup
- Unpacking: Carefully remove the transformer from its packaging and inspect it for any signs of damage.
- Placement: Position the transformer in a well-ventilated area, away from direct sunlight, heat sources, and moisture. Ensure no objects obstruct the ventilation openings.
- Voltage Selection: Locate the voltage selector switch on the front panel. This switch allows you to choose between 115V and 240V output.
- Connecting to Power: Use a suitable power cord (cold appliance plug) to connect the transformer's input to a wall outlet. Do not plug in the transformer yet.
- Connecting Appliances: Plug your electrical appliance into the appropriate output socket on the transformer. Ensure the appliance's voltage requirement matches the selected output voltage on the transformer.
Operating Instructions
- Verify Connections: Double-check that the transformer is correctly connected to the power source and that your appliance is plugged into the transformer.
- Set Output Voltage: Ensure the voltage selector switch is set to the correct voltage (115V or 240V) required by your appliance.
- Power On: Plug the transformer's power cord into the wall outlet. The power indicator lights (N and L) should illuminate, indicating the unit is receiving power.
- Appliance Operation: Turn on your connected appliance.
- Power Off: To turn off, first switch off your appliance, then unplug the transformer from the wall outlet.
Maintenance
- Cleaning: Wipe the exterior of the transformer with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure the unit is unplugged before cleaning.
- Ventilation: Periodically check that the ventilation openings are free from dust and debris to prevent overheating.
- Fuse Replacement: If the transformer stops functioning, the fuse may need replacement. The fuse holder is located on the front panel (see Figure 1). To replace, unplug the unit, unscrew the fuse cap, remove the old fuse, and insert a new fuse of the same type and rating (T 4A, 250V). Securely screw the cap back on.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Transformer does not power on (no indicator lights). | No power from wall outlet; Blown fuse; Loose power cord. | Check wall outlet with another device; Replace fuse (T 4A, 250V); Ensure power cord is securely plugged in. |
| Connected appliance does not work. | Incorrect voltage selection; Appliance fault; Overload. | Verify voltage selector switch setting; Test appliance directly if possible; Ensure appliance power consumption is within 400W. |
| Transformer overheats. | Poor ventilation; Overload. | Ensure adequate airflow around the unit; Reduce load on the transformer. |
Specifications
- Model: AT-400 NV
- Brand: VOLTCRAFT
- Power Rating: 400W
- Input Voltage: 115V AC or 240V AC (selectable)
- Output Voltage: 115V AC or 240V AC (selectable)
- Fuse: T 4A, 250V
- Dimensions (L x W x H): 24 x 22.5 x 13.5 cm
- Weight: 3.5 kg
- Power Source: Manual operation (via cold appliance plug)
Warranty and Support
VOLTCRAFT products are known for their robust construction and innovative technology. Spare parts for this model are generally available for 1 year from the date of purchase.
For technical support, warranty claims, or further assistance, please contact your retailer or the VOLTCRAFT customer service department. Please have your model number (AT-400 NV) and proof of purchase ready when contacting support.
