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Fig. 9: Emergency drain connection (diaphragm hand pump)
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Fig. 10: Installation example
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7.3.4 Emergency drain connection (diaphragm hand pump)
Fundamentally, it is recommended to install a diaphragm hand pump (accessory) for drain-
ing the tank in an emergency. For this, four connecting pieces ∅ 50 mm are available near
the floor. The connection is made using the included hose section DN 50.
7.3.5 Drainage of cellars
To automatically drain the installation area of faeces lifting units, a pump sump is to be put
in place in accordance with EN 12056-4 (Fig. 10).
• Design pump (item 10) according to the delivery head of the unit. The dimensions of the
pit in the floor of the installation area should be at least 500 x 500 x 500 mm.
• By switching, a 3-way cock (item 11, accessories) allows both the tank to be manually
drained as well as the pump sump using a diaphragm hand pump (Pos. 12).
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The connecting piece (Fig. 9) is opened by sawing off
(item 1) the lug bottom or by means of a suitable keyhole
saw (item 2).
Remove burrs and any excess material.
Connect carefully with the enclosed hose section and hose
clips.
Backflow level (usually upper edge of street)
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Ventilation pipe (over roof)
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Pressure pipe
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Inlet
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Gate valve for feed line
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Valve support for relieving weight
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(recommended)
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Gate valve for pressure pipe
11
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Non-return valve
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Drainage pipe tank
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Drainage pipe pump sump
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Drainage pump
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3-way cock
12
Diaphragm hand pump
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Switchgear EC-Drain LS
Salmson 04/2011
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