Care of piston assembly
Good hygiene is necessary if you plan to give your expressed milk to your baby. Wash hands before touching breasts or containers, and avoid touching the inside of containers or lids.
Wash all the collecting bottles and breast pump parts that touch your breasts or milk. Use hot soapy water.
Prior to cleaning, take apart all parts of your breast pump accessory kit. Be especially sure to remove the valve from the breast shield and separate the membrane from the valve prior to cleaning.
Prior To First Use to Sanitize at Home:
Disassemble, wash and rinse all parts of your kit that come in contact with the breast and milk. Sanitize by boiling for 10 minutes.
1. Remove tubing from pump and breast shield
2. Remove bottle(s) from breast shield(s)
3. Remove valve and white membrane from
4. Separate breast shield parts if using PersonalFit model
5. Wash all parts in hot soapy water and rinse with clear water.
6. Do not store wet or damp parts; allow parts to air dry on a clean towel. If you baby is premature of ill, strictly follow the hospital guidelines for sterilization of your pumping kit.
7. Sterilize your kit every 24 hours with boiling water, or consult your health care professional.
For Quicker Cleaning:
Medela offers Quick Clean™ Micro-Steam™ Bags for daily kit disinfection & Anti-Bacterial Wipes for cleaning before and after each pumping session.
If milk appears in tubing:
1. Turn off the pump and unplug from power source.
2. Remove and disassemble the tubing, pump connector, piston, cylinder and filter (parts vary by pump used). Except for filter*, wash in soapy water, then rinse in clear cold water. Clean the filter by rinsing in warm water without soap.
3. Shake water droplets out of tubing and hang to air-dry. For faster drying, attach tubing to pump and run pump 1-2 minutes or until dry, or pour a small amount of isopropyl alcohol through the tubing to dry.
If Condensation Appears in Tubing:
If condensation appears in the tubing, let the pump run after pumping with tubing attached for 1-2 minutes or until dry. Carefully check the tubing for milk spots. If milk gets in the tubing, clean tubing along with the kit.
The inside of the cylinder has to be smooth at all times. If a buildup of mineral deposits, or a white film is evident inside the cylinder, such buildups must be removed to prevent wear on the rubber seal. For this purpose, clean cylinder again with lukewarm soapy water or a vinegar and water solution. Rotate the piston in the cylinder every so often to ensure that the rubber seal is worn evenly. Washing the rubber seal and the vacuum regulator ring with warm soapy water will also prolong the life of these parts. Only sterilize/sanitize these parts when milk is evident on them. Be sure the rubber seal is completely dry before using.