Page Number 12 of 28
QLS 311
Subject
to
modifications
2.1B-38008-A01
Form 403074
Installation and Operation Instructions
As soon as voltage is applied to the pump, the key pad
is automatically in
display mode
. The
right-hand
decimal point
is illuminated on the display.
Normally, the display is dark. Only the functions (deci-
mal point, rotating segment display) or malfunctions (Er,
LL) are displayed.
In the display mode
- The user receives information on functions and
malfunctions.
- A test display is made when the voltage is applied, all
segments and decimal points are illuminated for 2
seconds.
Note: If
*EP*
is displayed after the display test, this indicates
that the button or the key pad is defective.
- The right-hand decimal point (On/h) indicates the
available voltage supply during the pause time. As soon
as another message is displayed, the decimal point
turns off.
- The operating time is displayed as a rotating segment.
-
Er
is shown to indicate a malfunction.
-
LL
is shown to indicate low level
(where applicable).
- The flashing display is changed into a continuous light
by pressing the button
(acknowledging).
To
acknowledge
, press the button briefly.
Messages which have been acknowledged but have not
yet been remedied flash again after the pump is swit-
ched off and on again.
Setting and operation of the QLS 311
Three possible modes of operation and settings can be
selected at the key pad:
- Display mode
- Operating mode
- Programming mode
Display mode
Fig. 27 - Display in display mode
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