Frequently asked questions about Jack
Please check your Jack for the following:
Is the float gauge free of dirt and limescale and can it be moved up and down easily (see A). The float gauge may be blocked by limescale. Please clean Jack as per the operating instructions; see “How do I decalcify and clean Jack?”
Make sure the new anticalc cartridge is immersed in water for at least 24 hours before use (not in the water tank). Should you forget to do so, please do it immediately.
Check whether the water can flow from the tank. To do this, lift the water tank up over a sink and press the valve at the bottom by the tank lid. Water should now flow out. If this is not the case, remove the anticalc cartridge from inside the tank lid and try again. If water now flows, the anticalc cartridge is blocked and needs to be replaced. If no water flows, contact the retailer shop where you purchased Jack and order a new tank lid.
Remove the water tank from Jack. Make sure there is enough water in the bottom part of the unit. Switch Jack on and check whether the water above the ultrasound membrane (see B) turns into mist. If the water does not turn into mist, the ultrasound membrane is defective. Please return Jack to the retailer shop where you bought it.
If the anticalc cartridge is not replaced frequently enough, a white film of limescale is formed from the water. If you notice such a film, the cartridge needs to be replaced. A white film can also originate from water from decalcifying units. In this case, however, it does not come from limescale but from the salt in the unit. Therefore, please use distilled water or hyper-filtrated (reverse-osmosis) water for for Jack.
To thoroughly clean Jack, remove the water tank, the mist outlet, the mist chamber and the silver cube. Now you can clean the ultrasonic membrane with a common household decalcifier diluted with water. Please make sure that the water level on the inside of the unit is not higher than 45 mm. If the water level exceeds 45 mm, the electronics may be damaged.
If you are not able to remove all the deposits, use a cleaning brush to clean the ultrasonic membrane. Please do not attempt to scratch the membrane clean with a hard item. In the case of tough limescale, we recommend cleaning the device several times in a row. After decalcifying, thoroughly rinse out the bottom part of the device and dry it.
With ultrasonic technology, the water is converted into mist. At the same time, limescale in the water is converted into minute particles, which are deposited as a white film on furniture. This is why we use an anticalc cartridge in Jack as it reduces the limescale content in the water. If the water is harder than 21 dH°, this cartridge would have to be replaced very often, in order to prevent the white film. For this reason, we recommend using our evaporator or air cleaner (e.g. Oskar, Oskar big, or Robert) for very hard water.