PAUL
®
station
manual
page 13
PAUL Station Manual 2019-08-02
Fixing the
OPV
or
OPV-S
with the two screws is very important as otherwise the
OPV
or
OPV-S
in total will float when the water level is rising, and thus will not
prevent
PAUL
®
from overfilling.
The
OPV-S
is equipped with a water level sensor that indicates if the water level
falls below a certain limit. This water level assures that a long term standstill is
possible. The sensor in the
OPV-S
must be connected by a very simple two line
wire. At delivery, the connector is attached to the sensor cable, and this connec-
tor has to be plugged into the
LWS
box that can be seen in Figure 7.
Figure 7:
LWS box
If desired (which might be the case in many situations), the wire can easily be
extended to the desired length,. e.g. by placing the
LWS
box in a nearby flat
etc.
The
LWS
operates with 4 AA batteries. If no warning is issued, there is no cur-
rent, which means that the batteries last as long as their official lifetime is. Of
course you can also use AA
rechargeable batteries
. In order to save battery
power due to unwanted conditions during transportation, the test knob is cov-
ered with a plastic cap. If you need to replace the batteries, open the
LWS
(4
screws) and remove this plastic, insert new batteries/recharged batteries and
close the box again and tighten the 4 screws properly.
Then check functionality of the
LWS
box itself by pressing the blue knob (see
Figure 7, right hand side) – a LED light should appear and a sound should be