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13.2 Functional description of the controller
Current measurement of the oscillator boards
In this configuration, a current check of the oscillator boards is performed every 3 hours. This test
only takes place when the humidification request is present and lasts max. 5 seconds. During
this time, the humidifying power is set to 100% and a functional test of all transducers is
performed.
Change of the level control
Since the level control in the humidifier is an important control, the two existing level float switches
are monitored simultaneously. A digital evaluation of the states of both float level levels reliably
detects critical and impermissible states.
Check and holding voltage of the solenoid valves
The current consumption of the solenoid valves is checked before and during filling. If a fault is
detected, contact "collective error message" is closed.
Further monitoring-routines
Optionally there are monitoring routines for the filling (maximum filling time) and monitoring routines
for emptying the fluid tray (maximum drainage time). If a fault is detected, an automatic problem-
solving routine will attempt to correct this fault. Furthermore, it is possible to monitor the function of
the fan, solenoid valve supply and solenoid valve drain via a current measurement.
If a system component does not work correctly, contact "collective error message" is closed.
The default settings of the control board AIRWIN 3.1 are shown in Tab. 13-1.
[MBA_UB-1...4-CT_3.1_EN] Rev.: 02/2022 Translation of the original instructions
No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data.
All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express perm ission of BOGA GmbH, Werkstraße 16, D-59494 Soest.
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