The Modutek Hot Pot or Hot Bath is a heating bath that is used primarily for KOH Etching, Acid Etching, and Temperature Sensitive Etching.
All adapting of the hot pot recipies must be authorized the Faculty or Student Supervisor.
Any SOLUTIONS THAT ARE HEATED IN THE HOT POT MUST BE LABELED AT ALL TIMES!!!
Basic operation of the hot pot for use in KOH etching is easy and requires no changes or
calibration to the Modutek Hot Pot Controller. If you desire to change the Controller settings, you
can read about changing them in the Operation Manual.
Push first the (1) Timer Button then the (2) Hold Button and finally the (3) Reset Button.
You will see the heat light turn on, but the timer will be stopped. This will allow you
to heat the water and continue the etch for a prolonged period of time.
Monitor the water level every half hour and keep water filled to the grey level.
Always leave the cover on the pot. This will minimize water evaporation and the amount of
chemical that is lost.
IF THE WATER LEVEL GETS TOO LOW THE POT WILL CRACK AND BE RUINED.
The Low Temperature alarm is manifest by an intermittent beep and the presence of a
low temperature light on the control panel. This alarm goes off when the hot pot water
temperature is a least 5 degrees C. below the set point temperature. This can occur when
adding significant amounts of fresh colder water to the already heated water. The
presence of this alarm is not a big problem and will go away as the water is heated back to
the set point temperature.
The High Temperature alarm is manifest by an intermittent beep and the presence of a high
Temperature light. This means that the water in the pot is at least 5 degrees C. above
the set point temperature. This is a problem and should be
corrected immediately. It usually occurs when most of the water in the pot is boiled out.
That can be corrected by adding more water to the pot. If the water level is full and the
High Temperature alarm is sounding, turn the controller off and consult the machine supervisor.
An unattended etch with the High Temperature alarm sounding should be turned off.