ThermoFisher Scientific HERASAFE 2025, Operating Instructions Manual

Page: 42 / 76

| Operation
42
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50161258
Herasafe 2025
Chapter 6

If the internal power supply is ON, the blue status indicator INTERNAL POWER
SUPPLY ACTIVATED is illuminated.

The monitor contact for the external device connection is ready for operation:
The switching state of the potential-free contact is switched through (for example, if
the solenoid valve of the gas supply line is activated via this contact, gas is supplied
only in this mode).

The display can show values for: Operating hours, downflow velocity, and exhaust
airflow velocity or the time, according to the selection of the operator.
Window-Open-Mode: Designates the condition when the window is open and
located outside the working position. To install and remove accessories, the front
window can be opened or moved upwards.

The airflow system blowers are switched on :

The red status indicator AIRFLOW NOT STEADY Is illuminated.

The front window is not in the working position:

The red status indicator FRONT WINDOW NOT IN WORKING POSITION is
illuminated.

The work space illumination is operational.

The audible alarm is active.

The internal power supply is operational:

If the internal power supply is switched on, the status indicator INTERNAL
POWER SUPPLY ACTIVATED illuminates.
Stand-By-Mode: For an interruption of the work process, the front window can be
lowered and the sample chamber sealed aerosol-tight. The air system output has been
reduced to match the lower air requirement.

The front window is closed:

The air system operates at reduced output.

The red status indicator FRONT WINDOW IS NOT IN WORKING POSITION is
illuminated.

The blue status indicator AIRFLOW REDUCED is illuminated.

The sample chamber illumination is available.

The internal power supply in the sample chamber is available:

If the internal power supply is ON, the blue status indicator INTERNAL POWER
SUPPLY ACTIVATED is illuminated.