CAUSTIC SODA METHOD
Caustic soda can burn if handled improperly. Never handle caustic soda without using all of the supplied
Personal Protective Equipment (PPE): gloves, goggles and tongs. If caustic soda touches the skin, wash it
away immediately. If caustic soda touches the eyes, immediately use an eyewash treatment.
Never operate the unit without water in the cleaning tank. Damage may occur.
Never use boiling water. Damage may occur.
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1 . Position the unit on a flat and stable work surface. Do not knock or move the tank during operation. This risks splashing
water onto electrical components .
2 . Fill the tank with 0 .75 liters of cold water . The caustic soda will create an exothermic reaction when added, which will
elevate the temperature of the solution .
Caustic soda is a harmful substance and can cause permanent damage if it touches the skin or eyes.
Use of personal protective equipment is essential. Never handle caustic soda without using the
supplied gloves and eye protection. Ensure that the area is cleaned down immediately after use, and
lock the caustic soda away to prevent misuse.
Do not engage the ultrasonic feature while stirring in the caustic soda. This will encourage the
solution to vaporize.
Ensure the area is well ventilated, and do not directly inhale the vapor from the tank.
3 . Using scales and a measuring bowl, measure out 200 grams of caustic soda .
4 . Pour the caustic soda into the tank in approximately 40-gram increments, stirring thoroughly after each addition . Stirring
is essential to make sure the caustic soda granules do not collect at the bottom of the tank .
5 . Immediately clean measuring bowl and scales to ensure removal of all caustic soda .
6 . Using the plastic tongs and all the personal protection equipment provided, gently lower the model into the caustic soda
solution being very careful not to spill any of the solution .
7 . Close the lid, connect the power supply and press the power button to turn on the tank .
8 . Use the -5 and +5 buttons to set the temperature . For best results, set the temperature to 60°C .
Do not set the temperature above 60°C as the reaction between the caustic soda and the water is
exothermic, and will continue to elevate the temperature. Actual temperature should never exceed
80°C.
9 . Once the tank has reached 60°C, use the -5 and +5 buttons to set the timer for 180 minutes . The ultrasonic process will
begin as soon as you have set the time .
10 . After 180 minutes, remove your model from the tank using the plastic tongs and wearing the personal protection
equipment provided . Immediately run under cold water for 1-2 minutes .
Continue wearing your personal protection equipment when handling the model until the manual tells
you it is safe to do otherwise.
11 . All support material should have dissolved . Any remaining supports can be crumbled or scraped away with a knife, or
rinsed off in the sink .
12 . Empty the caustic solution from your Ultrasonic Support Removal Tank . It is safe to pour it in the sink as caustic soda
can be used as a drain cleaner .
13 . Rinse the tank and refill it with 0.75 liters of water.
14 . Using the plastic tongs, place the model back in the tank .
15 . Once you have cleaned all caustic soda from the area, you may remove your personal protection equipment .
16 . Repeat the ultrasonic process with the clean water for 30 minutes at 60°C to remove any caustic soda residue that may
remain on the model .
17 . Once you have completed the ultrasonic process for the second time, use the provided tongs to remove the model from
the ultrasonic tank and rinse it under cold water for 1-2 minutes .
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