Leister TRIAC Drive Controls Overview

Prior to using the Leister TRIAC Drive, it is recommended to familiarize yourself and your team with the semiautomatic roofing welder's controls. Following is an overview of how to configure the TRIAC Drive's heat and speed settings. 

Heat Setting

The TRIAC Drive requires the use of a hot air hand tool, specifically the TRIAC AT or ST. The heat is controlled by the hand tool, not the drive unit. The following overview details how to adjust the heat on the TRIAC ST. 

  1. Make sure the hot-air hand tool is secure in the TRIAC Drive (see here for instructions).
  2. Turn on the TRIAC ST by pushing in the "|" side of the black lever button. 
  3. TRIAC-Drive-ControlsTurn the black potentiometer dial to set the heat output. 
  4. Allow the hand tool to warm up for approximately 4 minutes. 

Speed Setting

The TRIAC Drive's speed setting is set on the drive motor, not the hand tool. 

  1. Turn on the main power switch (3) located on the end of the drive unit (5). 
  2. Use the potentiometer (4) to adjust the speed depending on the material being welded and weather conditions. 

When using the welder, do not push or pull it. Instead let the drive wheel do the work, and simply keep the welder flat against the surface. 

Pressure Setting

While the semiautomatic welder weighs 9 lbs., it still requires the user to firmly press it against the seam. This is especially true for welds on vertical surfaces, such as parapet walls. There is no way to add extra weight to the welder. 

If you have any questions, please contact Hy-Tech Products at 800-635-0384, or your local Leister Sales and Service center.