Displaying The Operating Hours Of The Hepa Filters; Displaying The Performance Factor - Thermo Scientific Safe 2020 Operating Instructions Manual

6. Handling and control
6.3.11

Displaying the operating hours of the HEPA filters

The filter total operating hours after the last filter replacement can be
displayed. Upon each filter replacement, the hours are reset to zero.
1. To display the total operating hours:
Press the
on the display is illuminated.
2. The value indicates the full hours.
6.3.12

Displaying the Performance Factor

The Performance Factor (PER) is a value that indicates the safety state of the
safety cabinet.
This value is calculated from data determined by the cabinet safety system and
from values captured empirically by service personnel during safety checks. This
data is entered into a parameter list of the control software and interconnected.
The result can be indicated by the display.
1. To call up the PER:
Press the
on the display is illuminated.
The PER is displayed as an integer.
2. To evaluate the PER:
Number in the 100 to 60 range: The safety cabinet is operationally
safe. Personal and material protection is ensured.
Number in the 59 to 30 range: The safety cabinet is still operationally
safe. Personal and material protection is ensured.The safety system
should be checked.
Number in the 29 to 0 range: The safety of the device may be
impaired. The failure causes must only be repaired by authorized
service personnel. Contact Technical Service.
NOTE – Calling up value
The value should only be called up, when the
airflows have stabilized itself after a lead time
of approx. 20 min.
key repeatedly, until the yellow status indicator
key repeatedly until the yellow status indicator
Operating Instructions Safety Cabinet Safe 2020 / Maxisafe 2020
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