Aqua Pro Steamer - Multi-Purpose Steam Cleaner with FREE Accessory Storage Bag

Here are the steps that you should follow in descaling your machine:

Make sure that you empty out all remaining water from the machine before starting the descaling process.
Use around 700cc of hot or cold water, mix it with one packet of citric acid or white vinegar, and put the water into the bottle (most water calcification will precipitate on the bottom of the water tank, so 700cc is enough. Also, using hot water will get the citric acid to dissolve quickly).
Place the bottle into the inlet of the water tank, empty the water into the machine, remove the bottle and close it with the red cap.
Plug in your machine and push on the power switch to let it heat up and wait until the indicator light comes on (if you use hot water, the heating time should be around 5 mins, and if you use cold water, it should be around 8 mins).
Once it’s heated, turn off the power switch and press down the red cap, using a cloth to avoid the steam, and relieve the pressure.
Remove the red cap and empty the contents down the drain (before you remove the red cap, make sure there is no steam coming out from the machine).
After emptying the water tank, pour clear water again into the machine to remove all calcification. You can refer to this video.
You can also take a look at this video showing the whole process of descaling.

Descale your machine regularly. We recommend every month or so.

It is very important that you use distilled water or ‘pure’ water in the machine at all times, this will prevent calcification (this is the same with all steamers).

The Aqua Pro Steamer has a rating of 120 volts.

Regarding your question about the temperature, here's the information you need to know about the Aqua Pro Steamer:

1. Water boils at 100 degrees C and at higher than 100 degrees C it turns to steam. Normally the temperature will be 95~100 degrees C at the outlet of the handle.
2. Our boiler (water tank) has a set temperature of 140 ~145 degrees C ( around 287 F), when that temperature is reached, the green indicator light will be ON and the vapor and steam pressure can reach 4 bar (50PSI).
3. The steam flows through the pipe and hose when actuated and the temperature will gradually decrease, condensing some of the vapor into water droplets by the longer pipe.

If the red cap got stuck in the machine and you can't remove it, expel all of the steam by pressing down on the cap and then allowing the tank to cool down, while pressing down on the cap turn counter-clockwise.

If this does not work, then it may be that the clutch is stuck and not releasing. In order to free the clutch you should press down firmly and several times try to turn the cap counterclockwise.