13
4.2 The steam cylinder and the SC-System
The SC-System is a patented self-cleaning system developed by NORDMANN for its electrode steam humidifiers.
Because the minerals are kept in suspension, there is little accumulation of deposits on the floor of the cylinder. The
loose minerals are flushed away during normal drainage operations. The steam cylinder’s service life is considerably
lengthened and the time spent on maintenance is reduced.
The serviceable life of a steam cylinder is dependent on both the quality of the water supply and the unit’s actual
operating hours.
Lifetime of a steam cylinder at 100% steam output
A regular check of the steam cylinder ensures trouble-free operation.
If the humidifier indicates U1 (cf. 4.8), it can still be run for a few days before the steam cylinder needs to be replaced.
We recommend that you keep a spare cylinder in stock for each unit.
NORDMANN’s steam cylinders are so economical that it is usually cheaper to replace the cylinder than to clean it.
To clean the cylinder, it should first be emptied (by pressing the button for manual draining) and then removed.
After the drainage filter has been taken out, the cylinder can be well flushed with tap water (using no chemical
substances).
10
20
30
1000
500
1500
2000
t (h)
°
d Härte
Fig. 33
1°DH = 1,79°
French hardness
1°DH = 1,25°
English hardness
1°DH = 1,05°
American hardness
1°DH = 17.9
mg/I CaCo
3
(ppm)
Hours
with SC-System
without* SC-System
º
DH (German hardness)
*but cylinder is flushed periodically
