4.9 Remote indication
4.10 Safety functions
5.1 Cleaning and replacing the steam cylinder
The standard, potential-free relay output enables the collective alarm
message to be displayed remotely.
NORDMANN humidifiers are protected against running dry, i.e. the power
is cut off automatically as soon as the electrodes in the steam cylinder
protrude above the water level.
If current consumption becomes excessive (25% above the normal level),
the outlet valve is opened automatically. Because the electrodes are then
in contact with less water, current consumption falls back to the nominal
value.
If current consumption fails to fall below 140% of the nominal level
even after several drainage operations, the humidifier soon turns itself off
automatically, and Code U2 appears on the two-colour LED.
22
!
5. Servicing and maintenance
Before commencing, switch off all power to the humidifier and
disconnect the unit from the mains.
The serviceable life of the steam cylinder depends on both the hours run
and the hardness of the tap water used.
The cylinder should be replaced when the electrodes have become
insulated so much (because of calcification) that the required steam
output cannot be reached. At the same time, the water level in the
cylinder continuously touches the Niveau max. sensor. In this case, the
specially-constructed water filling cup offers additional protection
by feeding excess water directly into the overflow facility, allowing it
simply to drain away.
Whenever Code U1 appears, you should proceed as described on page 23.
However, the humidifier can still be run for some time before you need to
replace the steam cylinder.
