We reserve the right to change designs and technical specifications of our products.
21
ENG
9.1 Shut-down procedure
The pressurisation unit must be shut-down during any of the following scenarios:
•
Work is being carried out on the system.
•
Work is being carried out on the pressurisation unit
•
The heating/cooling system is being flushed
To shut down the pressurisation unit, please follow the steps below:
1. Isolate the electrical power supply to the pressurisation unit
2. Isolate the mains water supply from the pressurisation unit with the isolation valve in the hose
3. Isolate the pressurisation unit from the system using the isolation valve in the hose
If it is anticipated that the unit will be out of commission for more than 24 hours, it is
advisable to disconnect the hoses from the unit.
9.2 Restarting
After long periods of downtime
If this downtime was planned or scheduled, turn OFF the control unit and close off the isolating
valve to the system and the isolating valve to the top-up line. After that, decompress and then drain
the water area.
We recommend you carry out maintenance before restarting (see chapter 10: Maintenance).
Use the commissioning records for restarting and check especially for changes that can lead to other
operating conditions of the expansion automat (e.g. system pressure).
If the power supply has failed
The controller display will show a system reboot warning, this can be removed in the warning
screen. The target parameters and default settings for pressure and top-up will remain unchanged,
meaning automatic operation will resume automatically when power is restored (control unit ON).
Extraordinary system operating conditions (e.g. cooling to below the default setting) may fall outside
the permitted settings of the device (and expansion vessel of the system).
Please ensure that when the system cools down or warms up, the minimum or
maximum system pressure does not exceed or fall below the permitted operating
pressure.
Check the FlexFiller Direct G4 operation once power supply has been restored and, if necessary, set
the actual date and time values (overview menu options).
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