General Description; Transportation And Storage; Product Description - Grundfos Multilift MSS Instrucciones De Instalación Y Funcionamiento

3. General description

Grundfos Multilift MSS lifting stations are supplied complete with
collecting tank, pump, level sensor, LC 220 controller and
connection accessories. Depending on the variant, a non-return
valve is included.
The following gives a description of the components.
Fig. 1 Multilift MSS, front and rear view
Pos. Description
1 Pump with vortex impeller
2 Carrying handle for the pump
3 Collecting tank (44 litres)
4 Nameplate
Non-return valve with inspection cover and drain
screw to lift up the valve flap. See fig. 4.
5 NOTE: MSS is also available with adapter flange
only for connection to an external standard
non-return valve.
Screw cap for pressure tube and tank inspection
6
opening
Outlet adapter flange, DN 80, with connection piece,
7
DN 100 (outer diameter, 110 mm)
Flexible connection hose, DN 100 (internal diameter,
8
110 mm) with two clamps
Horizontal inlets in the back, DN 100, 180 or 250 mm
9
above the floor
10 Horizontal inlets from the side, DN 50/DN 100
11 Vertical inlets, DN 50/DN 100
12 Vent port, DN 50 (outer diameter, 52 mm), open
Port for manually operated diaphragm pump, DN 50
13
(internal diameter, 50 mm)
14 Fixing point
6
3.1 Applications
Grundfos Multilift MSS lifting stations are designed for the
collection and pumping of domestic wastewater with no free flow
to sewer level. Grundfos Multilift MSS lifting stations are designed
for the collection and pumping of the following liquids:
• domestic wastewater
• grey wastewater without faeces
• black water with faeces and discharge from water closets
• sludge-containing water.
The lifting stations are capable of pumping liquids containing
fibres, textiles, faeces, etc., below sewer level from minor
buildings such as private dwellings, flats, holiday homes etc.
Do not pump rainwater with the Multilift MSS lifting stations for
these two reasons:
• The motors of the lifting stations are not designed for
continuous operation which may be necessary in case of
heavy rainfall.
• Rainwater must not be discharged into a lifting station inside a
building according to EN 12056-4.
If in doubt, please contact Grundfos for advice.
Do not discharge the following substances/types of wastewater
via a lifting station:
• solid matter, tar, high content of sand, cement, ash, cardboard,
debris, garbage etc.
• wastewater from sanitary installations situated above the flood
level (this must be drained away via a free flow drainage
system according to EN 12056-1)
• wastewater containing substances such as large amounts of
greasy wastewater from deep fryers or similar appliances.

4. Transportation and storage

Warning
The motor carrying handle is only intended for lifting
the motor. Never lift or lower the lifting station by
means of the carrying handle.
Lift the lifting station by the collecting tank.
Note
For long periods of storage, the LC 220 controller must be
protected against moisture and heat.
After a long period of storage, the pump must be inspected before
it is started up again. Make sure that the impeller can rotate
freely.

5. Product description

The MSS Multilift lifting stations are described in the following
sections:
• section 5.1 Lifting station describing lifting station, collecting
tank, pump, non-return valve and level sensor
• section 5.2 LC 220 controller
as the functions of the controller.
In section 6. Installation of lifting station
sections, the above components are described as one unit.
describing the controller as well
and the following