Refrigerator ballast frame - large
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Watter Ballast Frame for use in refrigerators, wider version for 0.6l icepacks
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Informacje o modelu
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- Printables
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- Licencja
- Creative Commons — Attribution — Noncommercial
This water ballast functions as a thermal buffer, stabilizing temperatures in cold chain refrigerators. Located above the storage baskets, this container, filled with water ice packs, uses its high thermal mass to absorb heat and preserve the cold. When the main lid is opened—for inspecting, checking temperature monitors, or other reasons—the ballast acts as both a physical and thermal barrier. It prevents warm ambient air from directly reaching the vaccines and helps mitigate sudden temperature rises. This setup is essential for maintaining the strict temperature requirements of the cold chain, offering extra "holdover time" during frequent door openings or brief power interruptions.
Manufacturing instructions
Material: PETG
3D Printer: Any FDM 3D printer with the minimal build plate size 250x210mm
Slicer settings: 4 perimeters to increase strength, support needed – everywhere
Post processing instructions: Remove supports (do not forget to remove supports from inside), clean the parts from stringing if needed, check if the parts slides into each other as per assembly instructions.
Assembling instructions
Slide the left part into the right part fully.
Insert the 2pcs of 0.6l icepacks in left and right part. The product is designed to be used with PCOLPACKW06 (ICE PACK empty (B Medical) 0.6l, for water).
Slide the slider to hold the icepacks in place.
Insert the locking piece from the top (mind the orientation of the grove – inside)
QC procedures
Visual inspection:
Ensure that the surface is smooth, especially parts which were supported by supports.
Sometimes the corners detach during the printing – check if the bottom and top surface is flat.
Dimensional validation:
Check dimensions of assembled item using the drawing below.
Tolerance inspection:
When assembling parts should slide into each other easily but hold firmly.
Ice packs should have around 1-2mm tolerance on each side, when turned upside down they should not fall.
When the frame with icepacks is inserted into the basket of the refrigerator, it should slide in freely with approximately 5-10 space on each side
The frame with icepacks cannot obstruct the fridge door from closing fully.