ThermoFisher Scientific HERASAFE 2025, Operating Instructions Manual

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50161258
Herasafe 2025
Chapter 6
Display in OFF-Mode
In the OFF mode, the display shows the current time.
For the initial start-up of the device, the clock must be set to the correct time zone
and to the corresponding time output (CET mode or AM/PM mode), (see Setting Time).
Display in Work-Mode
In the work mode, the display shows the values of the device data that had been shown
last; (see Setting Time):

Total operating hours

Air inlet velocity

Downflow velocity

Time
Power Interruption
If the master PCB of the device detects a power failure or a failure of the power supply, a
warning is issued..
The safety function allows the front window to be completely lowered by operating the
rocker switch after a power failure.
Display and Functions after a Power Failure
After the power supply has been reestablished after a power failure, the display shows the
values and functions that were last shown prior to the failure. The functions that had been
selected last will be continued where they had been interrupted.
Failure Messages
Failure messages are shown on the display as text/number combinations with the codes
ER 1 to ER 84. If one of these codes appears on the display, contact Technical Service
immediately.
NOTE Power failure warning
In case of a power failure, the display goes off after 10 seconds, then an
audible alarm signal sounds for about 30 seconds. After this warning, the
device is no longer operative.
Table 1. Fehlermeldungen
Error code Fault cause
ER 3 Pressure sensor 1 Downflow
ER 4 Pressure sensor 2 Ehaust air
ER 5 NVRAM - Error
ER 6 BUS - Error
ER 7 Switch error front window
ER 8 BUS - Error Add-on PCB