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→Operation
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====Terminology====
====Terminology====
==== User Manual ====
*MSDS - Material Safety Data Sheet
====User Manual====
[https://data2.manualslib.com/pdf7/151/15091/1509040-padt/sca_1200_ht.pdf?8d7798a1a8125905a330475574a3ad86 User Manual] for the SCA 1200 HT Circulating Bath.
[https://data2.manualslib.com/pdf7/151/15091/1509040-padt/sca_1200_ht.pdf?8d7798a1a8125905a330475574a3ad86 User Manual] for the SCA 1200 HT Circulating Bath.
==Training==
==Training==
====Operation====
====Operation====
Using the Dissolvable support bath is very simple. During the busy times of the semester, the bath will be left on but if it is not on then turn it on using the control panel. Next, wait for the bath to heat up completely and then place your part in it using appropriate safety attire. It may be helpful to place the part in a mesh bag, remove the basket from the bath, and tie the bag to the bottom of the basket to keep the part completely submerged. Periodically check the part until all support has been dissolved. Always wear safety equipment when opening the bath.
Using the Dissolvable support bath is very simple. During the busy times of the semester, the bath will be left on but if it is not on then turn it on using the control panel. Next, wait for the bath to heat up completely and then place your part in it using appropriate safety attire. It may be helpful to place the part in a mesh bag, remove the basket from the bath, and tie the bag to the bottom of the basket to keep the part completely submerged. Periodically check the part until all support has been dissolved. Always wear safety equipment when opening the bath. The bath is only to be used for ABS models with QSR dissolvable support. PLA placed into the bath will become brittle and break apart, ruining the prints.
====Demonstration====
====Demonstration====
====General Procedure====
====General Procedure====
# ALWAYS USE SAFETY ATTIRE (see safety for requirements).
#ALWAYS USE SAFETY ATTIRE (see safety for requirements).
#Flip the rocker switch on the bottom right to turn the bath on.
#Flip the rocker switch on the bottom right to turn the bath on.
#Place the part inside of a mesh bag, tie the strings of the mesh bag to the side handles, allow the part to soak in the bath for several hours.
#Place the part inside of a mesh bag, tie the strings of the mesh bag to the side handles, allow the part to soak in the bath for several hours.
#*Mesh bags are located in the small drawer next to the sink.
#*Mesh bags are located in the small drawer next to the sink.
''When removing parts:''
''When removing parts:''
#When the soaking step is completed, the basket can be lifted out and removed so that parts can be sifted through in the air instead of the solution. If you do remove basket, remove the lid first and place it in the sink. Next, lift the basket, let it drain above the bath so that it drips into the bath, then once it is barley dripping, the basket can be transferred to the sink.
#When the soaking step is completed, the basket can be lifted out and removed so that parts can be sifted through in the air instead of the solution. If you do remove basket, remove the lid first and place it in the sink. Next, lift the basket, let it drain above the bath so that it drips into the bath, then once it is barley dripping, the basket can be transferred to the sink.
#Wash the mesh bag and part thoroughly. Use paper towels to dry the part and let the part sit on paper towels and drain for a couple hours. Always inform the part's creator to wash their hands after handling the part and before eating or touching their eyes/face.
#Wash the mesh bag and part thoroughly. Use paper towels to dry the part and let the part sit on paper towels and drain for a couple hours. Always inform the part's creator to wash their hands after handling the part and before eating or touching their eyes/face.
#Replace the basket and lid.
#Replace the basket and lid.
==Safety==
==Safety==
*Only Prototype Lab Mentors are allowed to use the Bath for safety concerns.
*Only Prototype Lab Mentors are allowed to use the Bath for safety concerns.
*Required safety attire is a lab coat, safety goggles, and heat/chemical protecting gloves.
*Required safety attire is a lab coat, safety goggles, and heat/chemical protecting gloves.
==Troubleshooting==
==Troubleshooting==
*'''What to do if the bath is beeping:'''
*'''What to do if the bath is beeping:'''
**This typically means the bath is low on water (see page 17 of the user manual).
**This typically means the bath is low on water (see page 17 of the user manual).
|-
|-
|1
|1
|Wipe down the machine
|Wipe down the machine
|As neeeded
|As neeeded
|Lab Volunteer
|Lab Volunteer
|N/A
|N/A
|Lab Volunteer
|Lab Volunteer
|}2. '''How to change the solution in the bath:'''
|}2. '''How to change the solution in the bath:'''
* Wear safety attire during the entire process.
*Wear safety attire during the entire process.
*Retrieve a barrel to drain the fluid into.
*Retrieve a barrel to drain the fluid into.
*Remove the blue silicone cap.
*Remove the blue silicone cap.
*Fill the bath up with water (use the clear bucket under the sink, fill this with water from the sink, pour the water into the bath) until the water level reaches about 0.5" below the max fill line
*Fill the bath up with water (use the clear bucket under the sink, fill this with water from the sink, pour the water into the bath) until the water level reaches about 0.5" below the max fill line
*Gather 6 packages of EcoWorks (1 package consists of part A and part B).
*Gather 6 packages of EcoWorks (1 package consists of part A and part B).
*Inside each package the powder is in dissoluble bags, gently place all bags from the 6 packages into the water.
*Inside each package the powder is in dissoluble bags, gently place all bags from the 6 packages into the water.
*Turn the bath on and allow it to heat up to 70 degrees Celsius.
*Turn the bath on and allow it to heat up to 70 degrees Celsius.
3. '''How to fill new Sodium Hydroxide bottles:'''
3. '''How to fill new Sodium Hydroxide bottles:'''
* Wear a lab coat, nitrile gloves, and safety goggles. This is very important. The granule Sodium Hydroxide (undiluted--undissolved) is much more dangerous.
*Wear a lab coat, nitrile gloves, and safety goggles. This is very important. The granule Sodium Hydroxide (undiluted--undissolved) is much more dangerous.
*There should be a mini funnel in the lab somewhere (it tends to move around some). Use the large Sodium Hydroxide bottle and mini funnel to refill the small bottles to the same level as the last remaining bottle. Always leave one bottle filled as a gauge for where to refill to. If a bottle has not been left filled, then fill the small bottle to about 1.5 inches below where the narrowing of the bottle begins.
*There should be a mini funnel in the lab somewhere (it tends to move around some). Use the large Sodium Hydroxide bottle and mini funnel to refill the small bottles to the same level as the last remaining bottle. Always leave one bottle filled as a gauge for where to refill to. If a bottle has not been left filled, then fill the small bottle to about 1.5 inches below where the narrowing of the bottle begins.