Wilo DrainLift WS 50 Basic Einbau- Und Betriebsanleitung Seite 59

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6.4.14.2 Float switch
4
3
2
1
Fig. 16: Float switch installation
6.4.14.3 Level sensor
1
2
Fig. 17: Level sensor installation
6.4.15 Lay the connection cable
58
Installation and electrical connection
1 Float switch
2 Retaining pipe
3 Cable tie
4 Pipe clamp to fix the retaining pipe
‡
Do not install the floater directly in the inlet.
‡
Floater has sufficient freedom of movement.
‡
Floater does not bump against the pump chamber.
1. Click the retaining pipe out of the pipe clamp and remove it from the pump cham-
ber.
2. Float switch attached to the retaining pipe with three cable ties. Observe the cable
length and mounting height!
3. Reinstall the retaining pipe in the pump chamber and clip it into the pipe clamp.
DrainLift Attachment point
Cable tie (A)*
460 mm (18 in)
WS 40.../WS 50...
* The values refer to an inlet floor of 450 mm. The value can be adjusted if the inlet is
higher.
For increased operational reliability, install a separate float switch for high water detec-
tion. In order to prevent a backflow in the inlet pipe, trigger the high water alarm at the
height of the inlet floor!
1 Retaining pipe
2 Level sensor
‡
To prevent backflow in the inlet pipe, set the switching point "Pump ON" approx.
50 mm (2.5 in) below the inlet floor.
‡
Lower part of the level sensor is permanently immersed.
1. Insert the level sensor into the retaining pipe.
2. Adjust the switching points in the switchgear.
DrainLift Pump ON*
0.4 m (16 in)
WS 40.../WS 50...
* The values refer to an inlet floor of 450 mm. The value can be adjusted if the inlet is
higher.
NOTICE! For increased operational reliability, install a separate float switch for high
water detection!
Building installation
DANGER
Risk of explosion due to escaping gases at the cable bushing!
An explosive atmosphere can form within the pump chamber. If the cable bushing is
not sealed airtight, the explosive atmosphere can spread into the operating space.
There is a risk of fatal injury due to explosion! Make the cable bushing airtight.
Cable length
Floater (B)*
400 mm (16 in)
Pump OFF High water alarm*
0.13 m (5 in) 0.45 m (18 in)
WILO SE 05