Maintenance; Decalcification - Sawo STN-30-1/2 Manual

Maintenance

Decalcification

1.
Tap water contains impurities, for example lime, that can cause calcium deposit and
block the internal parts of the steam generator. To prevent this and prolong the lifetime
of steam generator it is recommended to have a water filter and water softener. They
are connected to the water source of the steam generator's water inlet.
SAWO Decalcifying Solution can be used for decalcification. Follow these guidelines to
perform preventative maintenance of the steam generator.
WaRnInG!
Never add the Decalcifying
Solution when the generator is
on, it can cause serious burns!
Frequency for decalcification:
Unit dH where 1 dH is 10 mg calcium in 1 liter of water
< 3 ºdH = very soft water, decalcification every 500 operation hours
3-6 ºdH = soft water, decalcification every 100 operation hours
6-9 ºdH = hard water, decalcification every 50 operation hours
9-18 ºdH = very hard water, decalcification every 30 operation hours
Decalcifying Solution
sTP Classic Control:
Make sure that steam generator is OFF. Open the top cover of the steam
1.
generator. Remove the level probe wires and unlock the level probe. Use
a flat head screw driver or similar to poke the level probe to dismount.
You may clean the level probe as necessary. Pour the decalcifying
solution into the tank. Return back the level probe to its original position
when done.
Turn ON the steam generator and wait until water inside the tank starts
2.
to boil. Let the solution boil for 5 minutes.
If standby mode is available:
3.1
Press shortly Standby button. Steam generator goes to standby
mode and after time expires, water will be drained automatically.
After draining screen goes to OFF state.
If standby mode is not available:
3.2
Turn OFF the steam generator. Let the solution stay in the tank 30
minutes and then drain manually by pulling lever down.
Fill and drain the tank with water two times more by switching ON and
4.
draining the steam generator.
ssT/sTP Touch Control:
Turn ON the steam generator.
1.
Go to Settings menu by pressing three seconds the settings icon. Scroll
2.
to the "Decalcifying" menu and press "Start". Confirm by pressing "OK".
Next process shows that water is filled in the tank. After water is filled,
3.
add decalcifying solution: Open the top cover of the steam generator.
Remove the level probe wires and unlock the level probe. Use a flat
head screw driver or similar to poke the level probe to dismount. You
may clean the level probe as necessary. Pour the decalcifying solution
into the tank. Return back the level probe to its original position when
done.
After pouring the solution, press "OK" on the screen. Steam generator
4.
will automatically go through decalcifying process including draining.
After process is done, screen will go to off state. Fill and drain the tank
with water two times more by switching ON and draining the steam
generator.
Use Decalcifying Solution as follows:
Steam
Generator
(kW)
3-7,5
9-15
For steam generators in commercial use (over
5 hours continuously daily) additional service
plan is recommended twice a year. Please
contact your service center for details.
Decalcifying
Solution
(ml)
250
500
ENGLISH
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