Before You Begin
Find Serial Number
Once you have ensured that your replacement pump is up and running, find the serial number (SN) of your previous pump, which can be found on a white sticker underneath the pump cartridge, and confirm it matches the Returning Pump Serial Number printed on the bottom of the white shipping label.

Place Pump in Storage Mode
If you haven’t done so already, follow the instructions from the user guide to place your previous pump into Storage Mode. This will prevent the pump from beeping during shipment. If you are experiencing difficulties placing your previous pump in Storage Mode, let the battery drain completely.
Let’s Get Started
Prepare for Shipment
You received your replacement pump in the same box that you will use to return your previous pump to Tandem Diabetes Care. Return your previous pump within 10 days to keep your account in good standing and avoid being charged for the full price of the replacement pump.
If needed, remove any extra packaging from around the box
Place the previous pump inside the box
Seal the box
Place the box inside the provided shipping box and seal it
Apply the white shipping label to the shipping box
Drop the package off at any UPS store or drop box location