Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your Weller SL335 Soldering Iron. The Weller SL335 is a 33-watt modular soldering iron designed for various soldering applications, featuring an ergonomic soft grip handle and a durable stainless steel heater.
Figure 1: The Weller SL335 Soldering Iron. This image displays the complete soldering iron unit, including its light blue handle, black ergonomic grip, stainless steel shaft, and the attached black power cord with a standard three-prong plug.
Safety Information
Always observe the following safety precautions when using the Weller SL335 Soldering Iron:
- Electrical Safety: Ensure the power outlet matches the iron's voltage. Do not use the iron with damaged cords or plugs. Always unplug the iron when not in use or before performing maintenance.
- Heat Hazard: The soldering iron tip reaches temperatures up to 800°F (427°C). Avoid direct contact with the hot tip. Use a heat-resistant stand to rest the iron when not actively soldering.
- Fumes: Soldering produces fumes. Work in a well-ventilated area or use a fume extractor to avoid inhaling harmful vapors.
- Fire Prevention: Keep flammable materials away from the soldering area. Have a fire extinguisher or fire blanket readily available.
- Personal Protective Equipment: Wear safety glasses to protect your eyes from solder splashes. Consider wearing heat-resistant gloves.
- Children and Pets: Keep the soldering iron and all related materials out of reach of children and pets.
Package Contents
Verify that all items are present in the package:
- Weller SL335 Soldering Iron (with 2-wire or 3-wire power cord)
- PL113 Soldering Tip (pre-installed or included separately)
- User Manual (this document)
Setup
- Unpacking: Carefully remove all components from the packaging. Retain packaging for future storage or transport.
- Placement: Set up your soldering workstation in a well-ventilated area. Ensure a stable, heat-resistant surface.
- Soldering Stand: Place a suitable soldering iron stand within easy reach. The stand should securely hold the hot iron when not in use.
- Tip Installation (if necessary): If the tip is not pre-installed, carefully insert the PL113 tip into the heater barrel. Ensure it is seated firmly.
- Power Connection: Plug the soldering iron's power cord into a grounded electrical outlet.
Operating Instructions
- Heating Up: Once plugged in, the Weller SL335 will begin to heat up. As a non-temperature controlled iron, it will reach its maximum operating temperature of approximately 800°F (427°C) within a few minutes.
- Tinning the Tip: Before first use, or after cleaning, "tin" the tip by applying a small amount of solder to the hot tip. This helps prevent oxidation and ensures efficient heat transfer.
- Soldering Technique:
- Clean the surfaces to be soldered.
- Apply the hot soldering iron tip to both the component lead and the PCB pad simultaneously to heat them.
- Once heated, apply solder to the joint, not directly to the iron tip. The solder should flow smoothly and create a shiny, concave fillet.
- Remove the solder, then remove the iron. Allow the joint to cool naturally without disturbance.
- Resting the Iron: Always place the hot soldering iron in its stand when not actively soldering.
- Shutting Down: Unplug the soldering iron from the power outlet when you are finished with your work. Allow the iron to cool completely before storing.
Maintenance
- Tip Cleaning: Regularly wipe the hot tip on a damp sponge or brass wool cleaner to remove excess solder and oxidation. A clean tip ensures optimal performance.
- Tip Replacement: Over time, soldering tips wear out. Replace the PL113 tip when it becomes pitted, corroded, or no longer holds solder effectively. Ensure the iron is unplugged and cool before changing tips.
- General Cleaning: Keep the body of the soldering iron clean. Wipe with a dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the cooled soldering iron in a dry, safe place, away from dust and moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Iron not heating up. | Not plugged in; faulty power outlet; internal heater failure. | Check power connection; try a different outlet; if still no heat, the unit may require service or replacement. |
| Solder not flowing properly. | Dirty or oxidized tip; insufficient heat transfer; incorrect solder type. | Clean and re-tin the tip; ensure tip is fully heated; use appropriate solder for electronics. |
| Tip appears corroded or pitted. | Normal wear and tear; improper cleaning; excessive heat. | Clean tip regularly; replace tip if severely damaged. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | SL335 |
| Brand | Weller |
| Wattage | 33 watts |
| Power Source | AC |
| Upper Temperature Rating | 800°F (427°C) |
| Included Components | Soldering iron, PL113 Tip |
| Handle Style | Round, ergonomic soft grip |
| Heater Type | Stainless steel |
| Cord Length | 5 feet |
| Item Weight | 5.4 ounces (approx.) |
| Product Dimensions | 5 x 1.5 x 13 inches (approx.) |
Warranty Information
Weller products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Weller website. Keep your purchase receipt as proof of purchase for any warranty claims.
Support
If you require further assistance, have questions not covered in this manual, or need technical support, please contact Weller customer service. Contact information can typically be found on the Weller website or on the product packaging.
For more information and product updates, visit: www.weller-tools.com
