Pressurebox Core - FAQ, User Guide and Troubleshooting
Here you’ll find frequently asked questions, guides, and tips for the Pressurebox Core series.
1. Before Use
When you receive your Pressurebox, open and close the lid a few times to get familiar with the threading.
You may notice a small amount of protective coating on the outside of the lid or container. This coating is applied to protect the internal threads and ensure smooth operation. During transportation, a small amount may appear on the outside and can simply be wiped off.
2. Closing
Close the lid firmly, but use no excessive force, as pressure containers can become harder to open over time. The position where the logo on the lid aligns with the transparent window on the cylinder provides optimal airtightness. If you need easier opening, you can generally close it 1–2 cm less than this point, and it will still be very airtight.
3. Pumping
Pump your Pressurebox using a Schrader bike pump, such as the Pressurebox Pump.
Push the pump head down firmly onto the valve to ensure a proper connection so air can flow into the chamber. Monitor the pressure on the gauge (manometer) while pumping.
Recommended pressure: 20–30 PSI — higher pressure gives faster restoration but may make balls too hard if stored for long.
Never exceed 30 PSI.
4. Deflate
Remember to always press the deflate button on the lid before opening the box.
5. Opening
To open it easily, hold the cylinder against your chest with the bottom of your palm, using your full hand rather than your fingers, and rotate the cylinder and the lid in opposite directions (see image).
How-to-Guides and Solutions
Please try the steps below if you are experiencing one or more of these problems:
- The product is leaking air
- The compressor restarts often
- The battery life is shorter than expected
1. Ensure that you have closed the lid as instructed.
Close the lid firmly, but use no excessive force, as pressure containers can become harder to open over time. The position where the logo on the lid aligns with the transparent window on the cylinder provides optimal airtightness. If you need easier opening, you can generally close it 1–2 cm less than this point, and it will still be very airtight.
2. Check that the threads of the lid and cylinder are clean and that no dirt is stuck.
3. Take out and lubricate the black rubber O-ring on the outside of the cylinder.
The O-ring is loose and can easily be removed. Make sure it is fixed properly in its groove.
4. Ensure that the deflate button is not stuck open.
If the problem persists, press the deflate button several times to make sure it moves freely.
If this does not help, remove the lid, place it upside down, and use a screwdriver or a similar non-sharp object to firmly press the valve located directly below the deflate button from underneath, so that the deflate button is pushed upward.
This should ensure that the deflate valve is not stuck open.
If the issue persists, please contact us.
For easier opening, avoid tightening the lid too hard when closing the box.
If the lid has been closed too tightly and is difficult to open, try the following steps:
1. Make sure the box is fully deflated, and use the grip shown in our guide and in the information email you received.
2. If it still won’t open, try using a glove (thin skin gloves provide the best grip), a towel, or ask someone stronger to help.
3. If the lid remains stuck, gently tap around the lid threads with a spoon to reduce friction, then try opening it again.
4. If you are still unable to open the box, please contact us and we will be happy to help.
Situation: The balls are too hard
Since the pressure inside the Pressurebox is higher than the internal pressure of tennis and padel balls, the balls may become too hard if left in the box for an extended period and/or if too much pressure is applied.
This is easy to resolve: use lower pressure (for example, 20 PSI instead of 30 PSI) and/or open the box some time before playing and allow the balls to rest outside of the pressurized environment. The balls will gradually soften as the pressure equalizes.
Situation: The balls are not hard enough
If you want faster pressure restoration or firmer balls, pump up higher pressure, but never exceed 30 PSI.
If the balls are very soft or old to begin with, restoring pressure may take longer and you may need to start with lower pressure to avoid implosion of the balls. For best results, start with balls that still have some pressure and use the Pressurebox regularly between sessions to maintain optimal ball performance.
Shipping, Payments & Partners
We ship to most countries worldwide with UPS. When you add a product to the checkout and insert your address, you will be able to choose your country in the drop-down filter and see shipment options with costs. If you cannot find your country in the list, it might be because UPS has restrictions, or because we have an exclusive reseller in the country. Just reach out to us, and we will advise you what to do.
The shipping alternatives that we offer depends on your location, and the available options will be displayed in the cashier once you have submitted your address. For most destinations we work with UPS. We also offer Express shipping with UPS Express Saver.
The payment options that we offer depends on your location, and the available options will be displayed in the cashier. For most markets we support all common credit cards, and Paypal.
Yes, we work with selected resellers, clubs and partners in a number of countries worldwide. Please contact us for more information.