How to Replace Ceres Chill Upper Parts and Collection Cup
By Ceres Chill — The Breastmilk Storage Game-Changer | Published: 2026-10-23
Category: How-to Guides
Learn how to swap out your Ceres Chill upper assembly and collection cup. Step-by-step instructions for a secure, leak-free fit.
Quick answer
To replace the upper parts of your Ceres Chill chiller, detach the old collection cup assembly, then install the new Replacement Upper Parts/Collection Cup securely.
Why replace just the upper parts?
The upper cup, connector, and small cap endure daily wear from pumping and cleaning. A spare set lets you continue pumping while the other dries, or double pump without sharing components. The Replacement Upper Parts/Collection Cup is sold separately so you don't have to buy an entire new chiller.
Step-by-step replacement guide
- Remove the old upper assembly: Unscrew the existing collection cup from the chiller body by turning it counterclockwise. Set the chiller body aside. Check that no milk residue remains in the chiller threads.
- Inspect the new parts: Open the Replacement Upper Parts/Collection Cup package. Verify you have the Cup, Cap, and Connector. The Connector should fit snugly into the Cup's center hole. If the Connector feels loose, do not force it—contact support.
- Assemble the new upper parts: Press the Connector into the Cup until it clicks. Then screw the Cap onto the Cup's top opening. Ensure the Cap is hand-tight, not over-tightened. Over-tightening can crack the Cap or strip threads.
- Attach the new assembly to the chiller: Align the assembled upper cup with the chiller body threads. Turn clockwise until it is snug. Do not cross-thread. A common mistake is to screw at an angle—start straight to avoid leaks.
- Test the seal: Fill the chiller with a small amount of water, attach the lid, and invert it over a sink. If no water leaks, the seal is secure. If you see drips, re-tighten the upper assembly gently and test again.
Product facts
- Replacement Upper Parts/Collection Cup: Includes one Cup, one Cap, and one Connector (upper assembly). You get exactly the parts that wear out or get lost, without replacing the main chiller body.

Replacement Upper Parts/Collection Cup
