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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 preven-
tion 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 deter-
mined 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 (factory
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 simulta-
nously activated after the time preset in parameter 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 func-
tioning.This setting could be useful if the power supply
line is routed through a sensitive residual-current circuit
breaker. 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.
Denomination
Description
