6
TIP PREPARATION
TJ-70 tips are not tinnable and require little maintenance. Keep tips clean and free of
any foreign particles. Insure that all tip air jets are kept clean to prevent air flow
obstruction.
TIP REMOVAL
NOTE
To avoid tip damage, the Mini ThermoJet handpiece heater must be at a
temperature of at least 177°C (350°F) before attempting to remove an
installed tip. After removal, always place the hot tip in a tip holder or on a
metal surface to prevent burns or scorches. Hold the handpiece with the
heater body pointing up to prevent injury to personnel when cleaning a hot
handpiece. Dispose of any loose debris properly. The debris is hot.
1. Loosen the heater assembly set screw.
2. Remove the tip using a tip tool or needle nose pliers.
3. Clean the heater bore to remove any foreign particles (i.e., flux) using the
3/16 inch diameter wire brush. Do not push the brush more than 0.64cm
(1/4 inch) into the heater bore to avoid damage to the metal cylinder
installed at the rear of the heater bore.
4. Replace the TJ-70 handpiece in the Hot Cubby.