Setting The Display Contrast - Hettich UNIVERSAL 320 R Repair Instructions

Action
5. Press the key so
SELECT
often until the following
will be displayed
• Turn the control
knob
6. Press the
START / IMPULS
key
6.15

Setting the display contrast

The contrast of the display has been set by the manufacturer. With operating panel
E2275 with revision R00 (see label on the printed circuit board) the contrast can be
readjust.
Switch of the mains switch and disconnect the centrifuge from the mains
supply.
Use a screwdriver with insulated shank to make this setting as there is a risk
of short circuit on the printed circuit board.
• Unscrew the 3 screws on the lower part of the front panel.
• Pull the lower part of the front panel forward as far as it can be detached.
• Use the screwdriver to set the contrast on the trimming potentiometer on the rear
side of the control panel (see figure).
Rear side of the control panel:
trimming potentiometer for LCD-contrast
• Press the lower part of the front panel against the housing. Then press the upper
part of the front panel against the housing until both bolts will snap in.
• Fasten the front panel with the 3 screws again.
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Display / Comment
→ LABOSTAT OFF
→ LABOSTAT ON
ON = functions for the operation with an external
refrigerating/heating circulator activated.
OFF = functions for the operation with an external
refrigerating/heating circulator deactivated
→
*** ok ***
The setting will be stored
→
*** exit ***
The menu will be terminated automatically
A2
Bedienteil
operating panel