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Original installation and operating instructions.

CONTENTS

Page

General description

1.1

Applications

1.2

Pumped liquids

Function

Technical data

Components

Dimensions

Installation of tank

Mounting the pump in tank

Start-up and venting

Maintenance

1. General description

Grundfos Liftaway B 40-1 for underfloor installation
is a compact mini lifting station consisting of a tank
and a waste water pump, type Unilift KP 150, Unilift
KP 250 or Unilift AP12, with level switch for auto-
matic start/stop. The lifting station is designed for the
pumping of waste water from wash basins, washing
machines, showers and floor drains. The Liftaway B
40-1 can also be used for the collection and pumping
of rain water.

The variable height of the tank, which is installed
under the floor, makes it easy to adjust the tank to
floor level.

These instructions apply to the Liftaway B 40-1 tank
and installation kit only. See also the installation and
operating instructions supplied with the pump.

1.1 Applications

The Liftaway B 40-1 in combination with the Unilift
KP 150, Unilift KP 250 or Unilift AP12 is designed for
the pumping of waste water from wash basins, wash-
ing machines, showers and floor drains where the
waste water cannot be led directly to the sewer by
means of a natural downward slope.

The Liftaway B 40-1 must not be used for the pump-
ing of sewage water from toilets.

The lifting station is typically used:

• as draining well for the collection of drainage and

surface water,

• the pumping of waste water from basements and

laundry rooms below sewer level.

1.2 Pumped liquids

Waste water, not containing solid particles.

Liquid temperature: Maximum 70°C.

The tank is resistant to weak acids with pH values of
4 to 10.

Waste water containing fat must not be discharged
into the tank.

See also installation and operating instructions for
the pump.

2. Function

Waste water from the connected units is discharged
into the lifting station. The pump starts and stops by
means of the level switch, depending on liquid level
in tank.

The waste water is pumped through the discharge
pipe to the main sewer line.

3. Technical data

4. Components

a. Cover of pressure die-cast aluminium.

The cover can be turned to any position.

b. Plastic tank.

c. Stainless steel drain grating with water seal.

d. 3 inlet connections (DN 100) and

1 connection for venting and/or cable entry
(DN 70).

e. Hole for discharge connection.

Telescopic part for height adjustment.
An additional telescopic part is available.
This part gives a maximum height of 795 mm.

Kit including non-return valve and various fittings
required for pump connection.

Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local regula-
tions and accepted codes of good prac-
tice.

Discharge connection:

R 1¼.

Inlet connections:

3 x DN 100.

Connection for venting
and/or cable entry:

DN 70.

Technical data for pump: See pump instructions.