3 System Description
16 User Guide
the required process temperature. The temperature control unit is located within the
top compartment and has a display readout accessible from the outside through a
hole in the flow box cover. In case the temperature exceeds +65°C inside the flow
box, which can be caused by a malfunction of the fan, the control unit shuts down
the heating system. The push button switch turns red. The heating system can be
reset by pushing the button once but this should only be done if the reason for the
failure is known. The display readout has a small icon in the left, blinking in regular
intervals. This icon shows the activity of the heat output regulator. If the icon blinks
periodically then the heat regulation works properly. If the icon is illuminated or not
illuminated without any periodical change, then the temperature control unit is not
working trouble-free anymore. It is recommended to shut down the system and call
one of Heidelberg Instruments service offices (see 1.2 Contact).
CASTOR WHEELS
The flow box stands on eight castor wheels that have locking brakes in order to
provide a stable position. These castor wheels are not height-adjustable. The
machine is leveled by adjusting the four feet.
SWITCH PANEL
At the front side of the flow box several buttons are
located. The green button is used for powering up the
system, the red one is for powering it down. The
button in the middle is the emergency off button. For
opening and closing the window, the push button is
used. The flow box provides a light source for inside,
which is, depending on the application, yellow or red
light. The light switch is located between the
emergency off button and the window push button.
WINDOW
The window is opened only for loading and unloading purposes. During operation,
the window cannot be opened for safety reasons. The push button at the front of the
flow box opens and closes the window by means of compressed air. This button is
disabled while an exposure is running.
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