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Blow-down
(contd.)
2-2
Correction full
blowdown
see correction partial blow-down
2-3
Switch stand-
by blow-down
Should steam humidifier operation be prospectively
halted for a longer period of time, blowing-down the
cylinder water is advisable in order to comply with
the VDI 6022 hygiene regulations prescribing the
prevention of microbial contamination of residual
water. Parameter 2-3 is the switch to activate and
de-activate the stand-by blow-down function. When
activated, a full blow-down is run after a waiting
time that was determined by setting parameter
2-4 to the value in question. For stand-by blow-
down to become effective, the unit control switch
must remain in the „On“- postion („I“).
2-4
Waiting time
stand-by
blow-down
Determines the waiting time until the cylinder water
is fully drained to counteract contamination when no
steam is produced for a lengthy period of time (fac-
tory setting is 24 hours).
2-5 Switch dead
leg flushing
When parameter 2-5 = „1“, for flushing of the supply
line, solenoid valve and blow-down pump are simul-
tanously activated after the time preset in parame-
ter 2-6 and for the duration of time preset in 2-7. In
order for this to work, the safety interlock must be
closed.
2-6
Interval dead
leg flushing
Waiting time [h] when there is no steam production
until dead leg flushing is acivated; only valid if
switch 2-5 = „1“.
2-7
Duration dead
leg flushing
Duration of dead leg flushing [s].
2-9
Steam-down
time
This parameter serves for monitoring proper unit
functioning. When steam production is called-for by
the control software, a cylinder filling variation must
be detectable within the timespan defined by „2-9“.
Should this not be registrated, the unit enters error
state „123“ (error steam-down time) and cuts steam
production.
Group
Par.
Denomina-
tion
Description