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INTERROGATION OF THE OPERATING
STATUS
The NHSC / NHDI operating and display unit has
a “display menu” from which various operating
parameters can be viewed.
Note: It is not possible to change the values on the
display level.
Operation
Call up the display level with <ê>or<é>.
<ê> next operating parameter.
<é> previous operating parameter.
Exit the display level with <Menu>
Description of the operating parameters on the
display level
The following describes the individual operating
parameters that can be selected using the keys <ê>
and <é>, after the display level has been called up.
Steam Productions
Current actual and nominal value of steam
production in percentage of total output.
Nominal value: Unit capacity x input signal value.
Actual value: max. Unit capacity x input signal
value x capacity limitation.
Note: If the internal controller is activated only the
actual value is shown.
Under the following conditions the actual value
may differ from the nominal value: upon activation of
the heating power, if capacity limitation is active during
the filling cycle of the steam cylinder.
Analog Input (humidity demand)
Current value of the signal applied to the analog
input in % of its max. value.
Note: If the internal controller is active the
displayed value corresponds to the current air humidity
(%rh).
Internal Controller
Internal controller activated (”on”)/deactivated
(”off”)
Working Hours
Total of working hours elapsed since initial
commissioning of the steam humidifier.
Time Remaining to minor/major service
The time remaining (in hours) before the next
minor/major service.
Can be increased for poor water conditions or
decreased for good water conditions.
-14-
Analog input [%]
25
steam-prod[%]
ref.=50/act=25
Figure #17
NHSC / NHDI Maintenance Intervals
Controller funct
off
elapsed time
623
time to mainten.
600/1200