Duplex 340 - Precautions for Use of the Steam Generator; Duplex Steam Descaling

DUPLEX 340-420-620
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1.17 PRECAUTIONS FOR USE OF THE STEAM GENERATOR
1. Never leave the steam generator turned on or in operation if there is no water in the tank;
2. After each use, turn main switch on the boiler;
3. Clean the outside of the steam generator with a damp cloth;
4. Do not wash the generator with water to prevent infiltrations inside the boiler;
5. Clean the spray nozzles with water and dry with a brush;
6. Clean the holes with a pin;
7. Keep the water tank clean;
8. Replace the sand filter at least once a year.
WARNING
Do NOT touch the steam spray nozzles or the metal panels of the machine
with your hands due to the high temperatures that they reach during
operation.
DUPLEX STEAM DESCALING
We recommend descaling the steam generator regularly with HYDROSCALE.
1. Care should be taken when descaling the machine
2. Remove the brushes
3. Place the machine on a robust floor tiles/concrete etc.
4. Remove the `grub` screw at the end of the steam outlet pipe on the bottom/side of the
steam generator
5. Fill the water tank with a solution of water and Hydroscale
6. Put the slide switch into the first working position
7. Pull down the handle to activate the steam generator
8. Wait for the water/descaling solution to be completely used up
9. Turn off the machine (handle upright)
10. Rinse the water tank and fill with water only
11. Turn on the machine again to allow clean water to flush through the generator
12. Let the steam flow for about 10 minutes (time necessary for washing and rinsing the
nozzles).
At the end of this operation all the lime scale will be eliminated, together with all traces of
Hydroscale.
The perforated diffuser that ejects the steam towards the floor is made of special inert material
(Teflon) that ensures its cleanliness as it prevents lime scale from adhering to the surface.