Dolphin Liberty 600

Up to 4.5 hours of continuous cleaning, with a three-hour default cycle. In Eco Mode the same charge is spread over two weeks of shorter scheduled sessions.

Inground and above-ground pools up to 50 ft. It is the only Liberty rated beyond 33 ft.

Unpack the robot and remove the plastic wrap. Plug the charger into a wall outlet in the shade, connect it to the robot, peel the protective sticker off the power button and charge until the battery LEDs are all solid, which takes up to six hours. Unplug the charger, press the power button for less than four seconds, and set the robot in the pool.

Always charge in a shaded spot between 41°F and 95°F. While charging, the battery indicator blinks and steps up a bar at a time until all three bars are solid green.

Download the Maytronics One app, turn on Bluetooth and make sure the robot is not on its charger. Create an account and enter the code emailed to you, then hold the robot's power button for three to five seconds to start Bluetooth pairing and follow the on-screen steps. Install the software update if the app offers one. You can then join the robot to your 2.4 GHz Wi-Fi or skip that and do it later. When it is connected the LED blinks three times and turns solid blue.

The robot does not stay connected while it is under water. Set your schedule or cleaning mode first, drop it in, and the connection comes back on its own when you lift it out. One phone can pair over Bluetooth at a time; up to five can connect over Wi-Fi.

Cordless Maytronics robots, including the EON and the Liberty 400 and 600, lose their Wi-Fi and Bluetooth connection as soon as they are under water. That is normal. Connect the robot to the app before you put it in, set the cleaning mode or weekly schedule you want, then place it in the pool and it runs the program on its own. When you lift it out, the connection comes back automatically. Corded Dolphins stay connected the whole time because the power supply on the deck does the talking. Note that the Liberty 400 pairs by Bluetooth only, through the MyDolphin Plus app.

Balanced water. Too little chlorine lets algae clog the filters and starve the motor of flow; a pH above the recommended range stops the robot climbing walls. After a shock or flocculant treatment, wait 24 hours before the robot goes back in. Keep the water between 43°F and 95°F; below 59°F, climbing suffers.

• Alkalinity: 80 to 120 ppm
• pH: 7.2 to 7.6
• Calcium hardness: 150 to 250 ppm
• Free chlorine: 1.0 to 3.0 ppm
• Cyanuric acid: 30 to 50 ppm

Saltwater pools are fine up to 5,000 ppm of salt. Rinse the robot with tap water after each cycle to stop deposits building up.

It is better to take it out after each cycle, empty and rinse the filters, and store it dry out of the sun. Models with a weekly timer or an Eco mode are designed to stay in for the week they are scheduled, as long as the water is balanced; clean the filter at the end of the week. Whatever the model, lift the robot out before anyone swims.

Dolphins ship with fine spring filters (about 100 microns) that catch leaves, twigs and grit. Many models also include ultra-fine filters (about 50 microns) for sand, dirt and algae, and some accept a super-fine insert that filters down to 30 microns. Use the fine filters for spring opening and heavy debris, and the ultra-fine set for everyday cleaning. Ask us for the replacement filter set that fits this model.

Register online at registration.maytronics.com with the robot's 10-character serial number and your Pool Express receipt. The serial number is printed on the box label, on the warranty card and on a barcode label inside the robot's housing. The form asks for the serial number, your details, the purchase date and store, and an uploaded receipt or invoice showing the date, product and price; then you agree to the terms and submit. Keep the confirmation with your receipt. Because Pool Express is an authorized Maytronics dealer, the full 3-year warranty applies.

Yes. Pool Express is an authorized Maytronics dealer, so every Dolphin Liberty 600 we sell is a new unit that registers with Maytronics for the full manufacturer warranty, and our Pool Pros handle any warranty question for you. Buying from an unauthorized seller can void that coverage, which is why Maytronics asks you to buy from a dealer. You also get our 30-day trial and low price guarantee.