Wilo -DrainLift M1/8 Einbau- Und Betriebsanleitung Seite 32

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Fig. 11: Suction pipe connection for the diaphragm hand pump
1a
30
7.3.4 Emergency drain connection (diaphragm hand pump)
Fundamentally, it is recommended to install a diaphragm hand pump (accessory) for drai-
ning the tank in an emergency. The suction line for the diaphragm hand pump (outer dia-
meter 50 mm) is connected in the recess (Ø 65 mm) at the pump level of the tank (Fig.b11).
1b
min. Ø50
Remove the bottom of the recess.
1a. To do this, use a keyhole saw (outer Ø
50-56 mm).
CAUTION! Risk of damage!
Remove the bottom from the tank, since
otherwise the unit could be damaged!
1b. If there is no correctly-sized keyhole saw
available, the opening can also be made
using a narrow chisel or sharp screwdriver
(max. 5 mm wide). To do this, move around
the entire circumference of the deep circular
groove with a sharp tool with light hits of a
hammer until the bottom slowly comes off.
CAUTION! Risk of damage!
When separating the lateral surface (Ø 65 mm)
(sealing surface) and bottom, don't damage the
tank!
• When using hammers and sharp puncturing
tools, only hit the hammer lightly. The tank
could crack!
• Remove the separated bottom from the tank,
since otherwise the unit could be damaged!
2. Push the enclosed seal all the way in,
WILO SE 02/2011