Function - flamco WMS 2-1 Montage- Und Betriebsanleitung, Originalbetriebsanleitung

Signaling unit
The signaling unit contains indicators and controls in an impact-resistant plastic housing,
as well as all electronic components for evaluating and converting the sensor signal into a
digital output signal. The output is a zero potential relay contact.
The signaling unit is available in two versions:
Signaling unit WMS 2-1:
f
With integrated power failure interlock; that is, after a power failure, the signaling unit
must be released.
Fig. 2: Signaling unit
Type
WMS 2-1
3.1

Function

The WMS monitors water levels in heating systems. If the water level drops below
minimum, the low water level protection system alerts.
The operating principle of the low water level protection system relies on the conductivity
of the heating water. If there is a flow of water through the sensor, the low water level
protection system indicates sufficient supply of heating water. If there is no flow of water
through the sensor, the signaling unit immediately alerts.
Sensor
The sensor consists of an outer electrode and an inner movable electrode. The two
electrodes are connected via a two-core cable to the signaling unit. The signaling unit
constantly monitors the conductivity (electrical resistance) between the two electrodes.
The inner movable electrode can be moved about 12 to 13 mm upwards from the water
6
ENG: Installation and operating instructions
Translation of the original operating instructions
Signaling unit Sensor
WMS 2-1 DN 20
a Green operation lamp
Test button
b
Red alarm lamp
c
Release button
d
Without function
e
Component marking
TÜV.WBH.14-345