Your total troubleshooting guide to your Spectra breast pump

Are you having a problem with your breast pump? We know this is so frustrating! Here’s a rundown on some of the most common breast pump issues we find people write in to us about. Hopefully your issue is one of the easily resolved issues! If you still need help, just get in touch, we are very happy to help.

If you’re in a hurry – here’s the quick version. It’s probably your parts! Breast pump parts do not regular replacing. Have a read through all the comments at the bottom of this post and you’ll notice that our team has identified about 95% of the issues as being related to parts needing replacing, or an assembly issue.

1. My Spectra breast pump won’t turn on or charge!

If you’re plugging in your Spectra breast pump to mains and it’s not turning on, or if you have a rechargeable breast pump and it’s giving you no indication that it’s charging, the number one culprit for this is the power adaptor. Make sure the ‘prong’ part is clicked right in to the rest of the power adaptor.  Slide it down, and you will hear (and feel!) a loud clicking noise. When correctly installed, it will take a considerable amount of oomph to remove it, and the regional adaptor will not be visible from the back side of the adaptor. Whenever someone writes in saying they have a new Spectra pump that isn’t charging / powering on, we know it’s going to be the power adaptor not being clicked together all the way! Give it a go and hopefully you’ll be up and pumping.

The Spectra power adaptors come with regional adaptors making it easy to travel

2. Suction on my breast pump has dropped

It’s really common for mums to notice a drop in suction over time, or feel like the breast pump isn’t working well anymore. Unfortunately a lot of the time people think it’s a problem with the breast pump, or even worse, that their supply has dropped. In actual fact if you’re experiencing low suction on your breast pump then it’s generally due to parts needing replacing.

Over time, the elasticity of these parts wear down causing them to lose effectiveness. The number one part responsible for this are your valves. These need to be replaced every couple of months for mums who pump occasionally up to every 2 weeks for a mum exclusively pumping. If you can visibly see any fraying or stretching on your valves then you can be pretty sure they’re the culprit. Inspect your pump parts regularly for any deterioration and expect to be replacing them from time to time.  Click here for a guide on when to replace membranes and other breast pump accessories.

3. My breasts aren’t draining / I’m not getting much milk

We know this is so frustrating! There are a few reasons this could be happening, but the first thing to think about is shield fit and positioning. Spectra pumps come with 24mm size breastshields, but all women are different and so are our nipples! It’s very possible you need a different breastshield size. You can try gauging your breastshield size by measuring it (full guide in this post) or message us for help.

The following diagram is an example of what a shield might look like if it’s too small (left), too large (right), or as an ideal fit (center).


If you’ve read through our breastshield sizing guide and you’re still not sure, please just message us or comment below and we’ll try to help out.
Other than shield size, here are a few more things to consider if you’re not getting the milk output you’d like to be getting:

the spectra s2 has fully customizable vacuum and cycle settings

Have you experimented with your pump settings?

If your shield size is comfortable and seems to be correct, then this could be an issue of not using the settings that work best for you.  Like determining shield size, working out the best pump program for you is largely trial and error, but it can make a huge difference. Finding that ‘sweet spot’ in the pump settings that your body responds to best will really help.

Start in massage mode at a low vacuum setting, and gradually increase vacuum to your maximum comfort level: determine your maximum comfort level by identifying the vacuum level at which you start feeling discomfort, then turning it down one level. This is your maximum comfort level (for example, if you feel discomfort at vacuum level 5, vacuum level 4 is your maximum comfort level). Do not pump higher than your comfort level.

Once your letdown happens, try switching to expression mode at the same vacuum level. Some mothers find success staying in massage mode the entire time, while others find success switching back and forth between massage and expression mode multiple times per session. Play around with the settings each time you pump to see if you get different results.

Breast compressions

It is a reality of breast pumping that most women will do better if they do breast compressions whilst pumping, and for some women it’s a non-negotiable. You may find that you are someone who needs to do breast compressions when you pump. Unfortunately this is going to make the whole pumping thing even more laborious, but if you can make it work it will really help.  Apply gentle pressure in a circular movement beginning and the top of your breast and working down toward your nipple. Don’t massage under the shield, and don’t forget the area in your armpits. Tip – look on YouTube for some tutorials on how to do breast compressions.

The age of your baby / how many babies have you had

As a general rule, the older your  baby is before you try pumping, the harder it may be to get your body to respond to a breast pump . If your baby is older, or you breastfed for a long time before, then we really encourage you to think about getting the S2 or the S2. These pumps have a bigger motor that allows lots more different program options, so you’re more likely to find the settings that work well for you.

Did you just swap from another breast pump model?

It’s frustrating, but it’s really normal for it to take up to a week to get used to a new breast pump. The best way to do this (and we know this is hard) is to just give yourself some time. Persevere, try not to get anxious about reduced milk output / disappointing results, keep going and hopefully your body will adjust and you’ll be off and running with your new pump.

4. I’m hearing a squishy noise while pumping

A squishing sound is usually caused by pump parts not being completely dry prior to assembly. Depending on where the moisture is, it can impact suction, or worse, get into the tubing. It’s important to allow enough time for pump parts to completely air dry prior to assembling. If you’re a frequent pumper, we recommend investing in a second accessory set to ensure that you always have clean, dry pump parts on hand.

5. There’s moisture in the tubing

Moisture or condensation in the tubing is usually caused by parts being assembled while still wet. Ensure that when you wash your parts, you leave them ample time to air dry, and completely dry prior to assembly. For frequent pumpers, we recommend having an extra milk collection kit so you always have clean, dry parts available to use.

Check your backflow protector

If your parts are completely dry prior to assembly, but you notice moisture in the tubing during and after pumping, it’s most likely an issue with the backflow protector. Improper assembly of the backflow protector, a broken or worn out backflow protector, or forgetting to use the backflow protector all together will allow condensation to built up while pumping. It is very important to use the backflow protector because once moisture enters the tubing, there’s no way to safely clean, dry, and sterilise it. You also risk getting moisture into the pump motor itself, which can cause irreparable damage, or worse – mould! Backflow protectors need to be replaced regularly to prevent this from occurring. For frequent pumpers, we recommend having extras on-hand for when you need them.

6. I’m feeling a reduction in suction while double pumping

If you’re noticing a reduction in suction while double pumping vs. when you single pump, this is completely normal. However, if it gradually gets worse, then it probably means it’s time to replace your parts. Worn down parts tend to fare better while single pumping, but when double pumping will deteriorate more.

But why is it normal to feel a difference?

It is normal to notice a consistent difference in vacuum pressure between single and double pumping, especially at higher vacuum settings. Here’s the science behind it: The pump motor is built so that air is sucked through a single tube on each cycle. When the breastshield is placed over the nipple, that sucking creates the vacuum effect which draws milk from the breast. When double pumping, this airflow is split into two channels, which both go to the same single tube at the motor. This causes a reduction in suction on both sides. When single pumping, the extra air port is covered by a cap making it so there’s only one path for air to travel between the breast and the motor. There’s no splitting therefore no reduction in suction. If you’re experiencing a reduction in suction at your usual settings while double pumping, try turning the suction level up – but remember, never pump higher than your comfort level 🙂

7. There’s no suction when I’m pumping!

If you’ve ever noticed a sudden loss of suction while pumping most commonly it’s because the duck valve or valve + membrane set is not attached correctly to the breastshield, or has fallen off.

Are your backflow protectors still moving when your pump is on?

If the backflow protectors are still moving back and forth with the sucking motion of the pump, then chances are the suction issue is because of the membranes. When they lose suction or fall off it’s usually because they have worn down and it’s time to replace them. Check to make sure your membranes are still properly assembled to your kit, and remember that to properly maintain the pump they do need to be replaced regularly.

Are the backflow protectors not moving?

If the backflow protectors are not moving, it’s possible some of the internal tubing has come loose. To verify this, remove the tubing and collection kits from the pump. Then, place your thumb over the air ports and turn the pump on. If you feel a suction sensation, then it’s probably an issue with the pump kit assembly. Verify that the pump kit is assembled correctly and try again. If you don’t feel any suction, contact customer service.Proper assembly of the milk collection kit can solve suction issues while pumping

Are the backflow protectors are flopping around more than usual?

If your backflow protectors are moving but flopping around more then usual or hitting the casing, this usually means the valves need to be replaced.

Are backflow protectors moving and valves assembled correctly? Check the tubing

The second leading cause in no suction while pumping is that if while single pumping, the cap isn’t completely covering the unused air port; or, the tubing has come off all together. If you notice your tubing sliding on and off easily, it may be time to replace it.

Other things to try

Lastly, it’s possible your breastshield has come loose from your breast. If you’re using a hands-free pumping bra, check to make sure that the breastshield is still attached properly and that there’s no fabric sliding under the shield. This is more common than you might think because as the breast is pumped, it decreases in size while at the same time the weight of the collection bottle increases. So many times the fabric on the hands-free pumping bra will stretch a little with this extra weight, causing a loss in suction around the breastshield area.

8. There’s condensation in the backflow protector

This is perfectly normal! It means the backflow protector is working as it should to prevent moisture from evaporated milk or condensation from entering the tubing. This is one thing you don’t have to worry about. Just be sure to inspect the backflow protector regularly to verify that none of the condensation is passing to the tubing side of the membrane. And of course, be sure to wash and air dry after pumping if you notice condensation.

Comment below if you need more help, we love troubleshooting!

66 thoughts on “Your total troubleshooting guide to your Spectra breast pump

  1. Tammy says:

    Top tube on pump keeps blowing off .. I have trimmed it to see if it had just attached but that has not helped at all .. seems to have possibly a lesser suction on that side and it does work if you hold it in place with your hand.

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