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4.4.3 Description of Potentiometer
4.4.3.1 Potentiometer P1 / Steam Generation Output
Limitation
The control includes a Potentiometer P1 for setting the steam
generation output limitation. Using the steam generation output
limitation, the steam output can be set to a value between 25%
and 100% of nominal output.
Limitation of steam output may be required for better control.
4.4.3.2 Potentiometer P2 / Pump Run Time
The control includes an additional Potentiometer: Potentiometer
P2. This is used to set the pump run time during partial blow-
down. The Potentiometer is properly set to the delivered humidi-
fier type.
Depending on water quality, resetting the pump run time may be
advisable. The following may apply:
very high conductivity of feed water = longer pump run time
very low conductivity of feed water = shorter pump run time
Please get in contact with HygroMatik before modifying this
parameter.
4.4.4 Potentialfree Outputs
The rated load of the relay contact is 250V/8A.
4.4.4.1 Collective Fault - Base Relay
The Basic Control is normally supplied with a base relay pro-
grammed for a collective fault i.e. the base relay is triggered in
case of a malfunction. The potentialfree contact is shipped as a
two-way contact.
The connection terminal is located on the main PCB (normally
open contact: connection terminals 28 and 30; normally closed
contact: terminals 28 and 29).
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