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Thermo SAFE 2010 - Supervision - Alarm

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INSTRUCTION MANUAL
SAFE 2010/MaxiSAFE 2010
81-09-IM.doc
Use to leave the menu.
In order to switch on the UV timer, first position the front window at its lowest (closed) position and
switch off the light. After activating the UV light button the UV light and the yellow LED-light in the
button will be switched off to the pre-set time.
Front window
The unique double function front window is operated via and . When a button is activated
the display indicates if the window is opening or closing. By a short activation of the window will
open automatically in 2 steps:
1. From closed to normal work height (200 mm).
2. From normal work height to fully open. From this position it is possible to close the window to
normal work height (200 mm) by a short activation of .
For safety reasons it is only possible to close the window completely by keeping activated.
Note that the window will be pulled against the window gasket in positions closed and normal work
height. This gives a few seconds delay prior to window movement, when activated from these
positions, check the display to see if the automatic OPEN/CLOSE programme is initiated (Display
will show OPEN or CLOSE).
3. The fan will automatically switch to reduced speed if the window is closed with the fan
running at normal speed.
.
NOTE
When the cabinet is connected to an active exhaust system or the internal fan is
switched on at normal velocity with the front window in closed position, the under-
pressure inside the cabinet may obstruct the proper function of the front window
when opening from this position.
In case of improper function, switch off the fan, or switch to reduced velocity, open the front
window, switch back to normal velocity.
Key switch
Normal and reduced velocity ON/OFF buttons for the fan may be deactivated in order to prevent
any unauthorised change in fan status. However it is possible with the key switch in lock position to
change the fan velocity from reduced to normal velocity but not vice versa.
9.5. Supervision - Alarm
The cabinet safety is constantly supervised so that any deviation from safe conditions or any fault
in the supervision system will be indicated immediately.
Safe conditions are indicated by a green LED light in the button for fan at normal velocity.
Unsafe conditions will be indicated both acoustically and visually by red flashing display light.
The alarm will be initiated if:
The vertical air velocity inside the work chamber is outside the limits stipulated in the relevant
standards.
The horizontal in-going air velocity in the work opening is below the limits stipulated in the
standards.