How To Use Medela Pump In Style MaxFlow
Curious about how to use Medela Pump in Style MaxFlow? Then let me help with my step-by-step guide that will show you everything you need to know to make the most of your pumping experience with the Medela Pump in Style with MaxFlow.
From assembly and setup to helpful tips on navigating its settings, this guide will simplify the process and help you pump with confidence. Whether you’re a first-time user or just need a refresher, get ready to master the Pump in Style and make each session as smooth and effective as possible.
- If you prefer to watch your how to guides, there’s a video how to guide right below. Then, you can skim the written guide for more details.
- If you prefer to read your how to guides, scroll past the video, and you’ll find my written guide.
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Medela Pump In Style MaxFlow Inclusions
Before we get started, this how to use Medela Pump in Style guide is going to focus on the classic pump to bottle design.

When you first unbox your Medela Pump In Style MaxFlow, it’s essential to make sure you have all the necessary components and understand how they fit together.
This powerful, hospital-strength pump includes carefully designed parts to support efficient milk expression, so let’s make sure your setup is on point!
When you purchase a Medela Pump In Style with MaxFlowpump, included items in your kit may vary depending if you purchased the classic or classic plus version.
Medela Pump in Style with MaxFlow Classic Pump Kit Inclusions:
- Pump Motor * 1
- 5oz bottles with lids * 2
- Tubing * 1
- 24mm PersonalFit Flex Flange * 2
- PersonalFit Flex Connectors * 2
- Power adapter *1
- Battery pack *1
Medela Pump in Style with MaxFlow Classic Plus Pump Kit Inclusions:
- Pump Motor * 1
- 5oz bottles with lids * 4
- Bottle stands * 2
- Tubing * 1
- 24mm PersonalFit Flex Flange * 2
- 21mm PersonalFit Flex Flange * 2
- PersonalFit Flex Connectors * 2
- Power adapter *1
- Battery pack *1
- Cooler * 1
- Cooling element * 1
- Microfiber diaper bag * 1
After confirming all parts, I recommend familiarizing yourself with each one and checking for any potential damage or missing components.
And if you’re using a second-hand pump, I highly recommend you consider replacing items like flanges, flange inserts, and bottles. I know it is an extra cost, but it will help ensure your pump remains hygienic and efficient with every use.
Also, be sure you have the correct flange size that fits your nipple size, as this can impact comfort and milk flow. The size on the Medela Pump in Style MaxFlow flange is 24mm and if you buy the classic plus kit, you will also get a pair of 21mm flanges. If these are not the correct size, you will need to purchase the larger flange or smaller flange inserts separately.

Medela Pump In Style MaxFlow Components
Before we get started using your Medela Pump in Style MaxFlow, I think it’s important to familiarize yourself with each part to set up your pump effectively and start your pumping journey with ease.
Here’s an overview of the components included:
Pump Motor: This hospital-strength motor is designed for powerful, efficient suction. It’s lightweight and portable, making it easy to pump wherever you need.
Tubing: The specialized tubing is what connects your collection containers to the pump motor, creating the vacuum for milk expression. Please note the tubing connectors are different depending on if you have chosen to go with the hands-free collection cups or pump to bottle design. They are not interchangeable, so if you want to swap between set ups you will need to use the correct tubing: pump to bottle tubing or collection cup tubing.
5oz Bottles with Lids: These collection bottles securely attach to the connectors, allowing you to collect and store your milk in one place. The lids help keep your milk fresh and safely sealed.
PersonalFit Flex Flange: Available in multiple sizes, this flexible, soft-rimmed flange provides a comfortable fit and helps create a seal around your breast for optimal suction and milk flow.
PersonalFit Flex Connectors: These connectors secure the flange and tubing together. They also prevent milk from entering the tubing, maintaining a closed system that keeps the motor dry and free from milk residue.
Membrane: This is a yellow, flat, circular membrane which is part of the valve system.
Power Adapter: The power adapter charges the motor for home or on-the-go use.
Battery Pack: For times when you need to pump away from an outlet, the battery pack provides a convenient, portable power source so you can pump on your own schedule. The battery pack take 8 AA batteries.
Assembly
The good news is that the Medela Pump in Style MaxFlow is nice and straightforward to assemble and the more you do it, the easier it becomes.
Here’s a step-by-step guide to help you reassemble your Medela Pump in Style:
Step 1
Before assembling your pump make sure that you have sterilized all the parts that come in contact with breast milk. This is the collection cups, membranes, flange, and flange inserts.
You will also need to wash your hands thoroughly with soap and water before handling any of the sterilized components.
Step 2
Attach and secure the membrane to the PersonalFit Flex Connector. There is a yellow flap on the membrane that is positioned at the bottom. When you push the connector closed you should hear it clip into place.

Step 3
Connect the PersonalFit Flex Flange to the PersonalFit Flex Connector. Push firmly into place ensuring that you have a firm seal.

Step 4
Screw the Medela compatible bottle securely onto the PersonalFit Flex Connector. Make sure it’s tightly fastened to prevent any leaks.

Step 5
Connect your tubing to the collection cup.
You have the choice between single and double pumping, so choose your tubing accordingly.
For single pumping, secure one of the ends into the hole on the top of the yellow Y-shaped connector. This will prevent the second tubing from sucking up unwanted air.

For double pumping, simply connect both yellow tubing connectors to the opening on back of each PersonalFit Flex Connector.
Ensure the tubing is attached firmly and securely.

Step 6
Attach the tubing to the pump motor by inserting the other end of the tubing into the hole at the bottom of the pump motor. Push it firming into place to ensure it’s securely connected.

Step 7
Connect the power adapter or insert the battery pack.

Step 8
Press the power button to turn on the pump. You will hear your pump start pumping.
Buttons and Control Panel
There are just four buttons used to operate your Medela Pump in Style with MaxFlow. These are the bright yellow buttons located on the top of your pump motor.
There is no LED screen for the Medela Pump in Style with MaxFlow.
Power (On/Off) Button
This button turns the pump on or off. Hold it for a few seconds to power up the device, and it will for a few seconds to power off.
Mode Button
There are two pumping modes on the Medela Pump in Style MaxFlow:
- Stimulation mode for stimulating letdown
This mode is used at the start of your session to encourage milk letdown. It provides quicker, lighter suction patterns to help mimic the initial stages of nursing. The goal is to get your milk flowing before transitioning to the more sustained, rhythmic suction needed for full milk expression.
How to use: Run the Stimulation Mode for 2–3 minutes or until your milk starts to flow.
Please note that your pump will start in the stimulation mode and then automatically switch to the expression mode after 1 minute. If this is not long enough for your let down to kick in, you can switch between the two modes with the arrow/droplet button.
- Expression mode for efficient milk removal
After your milk has let down, switch to Expression Mode. This mode provides slower, more rhythmic suction patterns that mimic your baby’s natural sucking. It’s designed to efficiently express milk from the breast, ensuring a thorough pump session.
How to use: Use this mode for the remainder of your session to empty your breasts completely.
Suction Level Buttons
There are 10 suction levels to choose from on the Pump in Style MaxFlow. To adjust the vacuum strength, you can press the + button to increase the suction level and the – button to decrease it.
As there is no LED screen or app integration, there is no way to tell the suction level you are on. My recommendation is to count up or down from the lowest or highest setting to determine what suction level you are on.

Using the Medela Pump in Style MaxFlow
Getting started with your Medela Pump in Style with MaxFlow is easy and straightforward. Here’s a step-by-step guide to follow when using the Pump in Style with MaxFlow:
Step 1
Wash Your Hands: Before anything, wash your hands thoroughly with soap and water. Clean hands are essential for a hygienic pumping session.
Step 2
Assemble the Pump: Ensure all the parts are sterilized and properly assembled. Make sure everything is securely connected for optimal performance.
Step 3
Connect Your Pump to Your Preferred Power Source: You can choose between a plug in wall power adapter and the battery pack. Before using the battery pack ensure that you are using 8 AA charged batteries. The battery pack is not rechargeable.
Step 4
Position the Flanges: Place the breast shield over your breasts, ensuring your nipple is centered in the shield. Gently press it against your breast to form a light seal.
Ensure you have the correct flange size for a better output and maximum comfort during pumping. Use a flange insert if needed.
Step 5
Secure the Pump in Your Bra: The Medela Pump in Style with MaxFlow is designed to be used hands-free. Secure the pump’s collection bottles into a well-fitted, stretchy bra, ensuring the pump stays comfortably in place during use. Make sure it’s snug but not too tight to avoid discomfort.
Step 6
Power On the Pump: Press the power button to turn on your Medela Pump in Style with MaxFlow.
Step 7
Select Mode and Adjust Suction Level: Choose your preferred pumping mode to start.
- Begin with stimulation mode to stimulate milk letdown.
- Once milk starts flowing, switch to expression for effective milk removal.
Adjust Suction the suction level using the control buttons to find your comfort zone.
My Tips:
- Start Slow: Always begin with a gentle suction setting during the Stimulation Mode to encourage letdown. Once your milk starts flowing, switch to Expression Mode and increase the suction to your preferred strength.
- Adjust As You Go: Don’t hesitate to tweak the suction strength during your session. It’s normal to need a little adjustment as you get comfortable and as your milk flow fluctuates.
- Listen to Your Body: You want to feel comfortable, so if you experience pain or discomfort, reduce the suction level. Pumping should never be painful.
Step 8
Monitor Milk Flow: Keep an eye on your milk flow throughout the session. If you notice any decrease in suction or any discomfort, pause to adjust the flange for a better fit. Ensure the pump stays in place for consistent suction.
Step 9
Turn Off the Pump: When you’re done, press the power button to turn off the pump. The Medela Pump in Style with MaxFlow has an automatic shut-off feature after 30 minutes, just in case you forget to turn it off.
Step 10
Remove the Pump: Carefully break the seal between the flange and your breast by gently pulling away. Lean forward slightly to avoid spilling any milk as you remove the pump.
Step 11
Store your Milk: The great thing about the pump to bottle design is that your breast milk is already in a bottle for use straight away or storage. If you plan to store your breast milk, simply add the storage cap and store according to recommended breast milk storage guidelines.
Step 12
Clean the Pump: Once your pumping session is complete, clean all the parts that came into contact with milk. This includes the flanges, connectors, and collection bottles. Cleaning after each use is crucial for keeping the pump in good condition and ensuring hygienic storage.
Here is my full guide on how to clean a Medela Pump.
Step 13
Store the Pump Safely: Once everything is cleaned and dried, store your pump in a safe, dry place until the next time you use it. Make sure all parts are dry before storing to prevent bacteria buildup.
Medela Pump in Style MaxFlow Replacement Parts
Over time, certain parts of your Medela Pump in Style with MaxFlow may need replacing to maintain optimal performance and efficiency.
If you notice reduced suction or a decrease in milk output, it’s a good idea to check the pump for any wear, damage, or stretching, especially in the silicone parts.
Medela recommends replacing silicone components, such as the valves, membranes, and tubing, every 1-3 months, depending on how frequently you use the pump. Other parts should be replaced as needed based on visible wear or performance issues.
Here’s a list of replacement parts available for the Medela Pump in Style with MaxFlow:
- 5oz bottles with lids
- Pump to Bottle Tubing
- 24mm PersonalFit Flex Flange
- 21mm PersonalFit Flex Flange
- 27mm PersonalFit Flex Flange
- 15mm Flange Insert
- 17mm Flange Insert
- 19mm Flange Insert
- 21mm Flange Insert
- PersonalFit Flex Connectors
- Membrane for PersonalFit Flex Connectors
- Complete Medela Classic PersonalFit Flex Double Pumping Kit
- Battery Pack
- Medela Hands-Free Collection Cups
- Collection Cup Tubing
- Membrane for Hands-free Collection Cup
Troubleshooting Common Issues with the Medela Pump in Style with MaxFlow
If you’re experiencing issues with your Medela Pump in Style with MaxFlow, here are some common problems and quick solutions:
1. Reduced Suction or No Suction
- Cause: Damaged or improperly assembled parts (flanges, connectors, membranes, tubing).
Solution: Ensure all parts are correctly assembled and check for any damage. Replace any worn or cracked silicone components. - Cause: Clogged or dirty parts.
Solution: Clean all parts thoroughly after each use to prevent blockages that could interfere with suction.
2. Low Milk Output
- Cause: Incorrect suction level for your comfort or milk flow.
Solution: Adjust the suction level to a setting that promotes milk flow without discomfort. - Cause: Incorrect breast flange size.
Solution: Ensure you’re using the correct flange size for a snug, comfortable fit. A poor fit can affect milk flow and output.
3. Uncomfortable or Painful Pumping
- Cause: Improper flange positioning or incorrect size.
Solution: Make sure the flanges are properly positioned and the correct size for your breasts. - Cause: Too high suction strength.
Solution: Lower the suction level until you find a comfortable and effective setting.
4. Pump Won’t Turn On
- Cause: This could be due to a low or dead batteries if using the battery pack or an issue with the charging cable.
- Solution: Charge the pump fully, ensuring the power connection is secure. If it still won’t turn on, inspect the charging cable and port for damage. You may need to replace the cable if it’s not charging effectively.
If these solutions don’t resolve the issue, refer to the user manual for more detailed troubleshooting, or contact Medela’s customer support for assistance.
Final Thoughts on Using the Medela Pump in Style with MaxFlow
Once you’re familiar with the Medela Pump in Style with MaxFlow, using it becomes a smooth and efficient process. The key is to get comfortable with assembling the pump, adjusting the settings, and keeping up with routine maintenance to ensure a successful pumping session each time.
Feel free to experiment with the suction levels and settings until you find the combination that works best for you. And remember, your ideal settings might change as your pumping journey evolves, so don’t hesitate to adjust them as needed.
It’s also crucial to keep your pump in top condition by thoroughly cleaning and sterilizing all parts that come into contact with breast milk. Regular cleaning not only ensures hygiene but also helps maintain optimal performance.
Finally, be mindful of wear and tear on parts like the membranes, flanges, and flanges insert. Replacing these components when necessary, will ensure consistent suction and a comfortable experience.
With these simple steps, you can enjoy smooth and effective pumping with the Medela Pump in Style with MaxFlow!