Symbol Unit status
Current unit (unit being accessed, display or web server)
Online
Offline
Not configured and not included in the Master/Slave system
Tab.8.b
The units in the Master/Slave system can also be selected one by one, displaying maximum production,
unit status, operating hours, current production request and any alarms. To enter this display, from screen
Ed08, select the desired unit and press ENTER, thus accessing screen Ed09. Scroll using the UP/DOWN
buttons to display the details of all the units.
8.4.6 Software backup
Master/Slave mode can also be used to manage the software backup function; if one or more units in the
Master/Slave system is affected by a malfunction, the system automatically restores humidification
production by activating the backup units. The lost production in relation to the request is thus
compensated by increasing production on the individual units (where possible) and/or starting any units
in standby. Even if not strictly necessary, to ensure the backup function, the external control signal must
be sent to all the units in the Master/Slave system; if using probes on the other hand, each unit must be
fitted with a probe. Only in this way can complete operation be guaranteed in the event of malfunctions.
Note: if a unit goes offline due to a malfunction or shutdown, it will temporarily be excluded from
the system, and when next restarted it may take 15 seconds or more to automatically come online
again.
8.4.7 Software backup for maintenance
During maintenance or cleaning on a unit in the Master/Slave system, the backup for maintenance
function can be activated. This allows production to start on a unit in standby, set as backup, before
switching off the humidifier in question for maintenance. In this way, service continuity can be
guaranteed in applications where required humidity control is very precise and continuous over time.
Procedure:
1. Access screen Ed07 (Network);
2. Press DOWN to display the list of units (Ed08);
3. Scroll to the unit on which maintenance is required (Unit 1, Unit 2, …) and press ENTER to confirm
(screen Ed09).
4. Press PRG to access screen Ed10 and set “Request switch unit off” = YES. Wait for the display to show
the message: “The unit can now be switched off for maintenance” and then switch the unit off.
Once maintenance has been completed, simply switch the humidifier on again, and it will automatically
come back online.
Note: to activate the advanced software backup functions for maintenance, the backup unit must be
connected to the probes or external signal.
88|8. Master/Slave system
gaSteam - UG +0300090EN rel. 1.2– 09.10.2018
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