English
8
WILO SE 04/2012
5.3 Scope of delivery
• Pump with 25 ft (8 m) connecting cable and free cable end
• Installation and operating instructions
5.4 Accessories
• Switchgear for 1 or 2 pump operation
• External monitoring devices / tripping unit
• Level control device (level sensor / float switch)
• Accessories for portable wet well installation
• Accessories for stationary wet well installation
Accessories must be ordered separately!
6 Description and function
6.1 Description of the pump
The submersible pump must be flooded with fluid to
ensure sufficient cooling. It is driven by a corrosion-
resistant water pressure-tight encapsulated three
phase or single phase motor.
The pump housing and single-channel impeller are made
out of cast iron. The fluid is sucked in on the underside
through the macerator openings and exits on the side
through the pressure ports into the piping.
The macerator cuts up cuttable admixtures so that they
can be transported through the single-channel impeller
and the DN 40 pressure pipe. The blades, cutters and
counter-cutters are of hard metal. Non-cuttable admix-
tures, such as stones or metal pieces, destroy the mac-
erator and should therefore be kept away from the pump.
An oil barrier chamber is installed between the hydrau-
lics and the motor. It is filled with medical white oil and
is to lubricate/cool the seal. Furthermore, fluid entering
the system is taken up by the seal on the fluid side. The
pump chamber is sealed using a mechanical seal on the
fluid side and a radial shaft seal or with a mechanical seal
on the motor side (depending on type, see point 5.2).
The pumps can be installed as a stationary wet well
installation using a DN 40 foot elbow or as a portable
wet well installation using a pump base. Pumps installed
as a stationary wet well installation are connected to
the discharge pipeline using the foot elbow, portable
wet well pump installations are connected to the dis-
charge pipeline using a pipe elbow with DN 40 flange
connection.
The motors are equipped with a thermal winding con-
tact which automatically switches the motor off upon
overheating. Monitoring is self-switching on single
phase motors. That means, once the motor has cooled
off it switches back on automatically. On three phase
motors, the thermal winding contact must be connected
to a switchgear and evaluated.
Furthermore, the MTS 40E… pumps are equipped with
leakage detection (DI) for the motor compartment.
It switches the pump off as soon as water enters the
motor housing. The leakage detection must be con-
nected to a switchgear and evaluated.
7 Installation and electrical connection
Installation and electrical connection must be carried
out in accordance with local regulations and only by
qualified personnel!
7.1 Installation
The pump is intended for stationary wet well installa-
tion and portable wet well installation.
• The pump installation site must be free of frost.
• The sump must be cleared of coarse material such as
rubble before installation and starting the pump.
• Install the pipes so that they are stress-free. Fix the pipes
so that the pump does not carry the weight of the pipes.
• To protect against any backflow from the public drain-
age system, install the pressure pipe as a loop. It must
be above the established backflow level (usually street
level).
Sealing: on the motor side
Rotary shaft seal (MTS 40/…)
Mechanical seal (MTS 40E…)
Separation chamber oil type
Marcol 82 (medical white oil)
Oil filling quantities
0.63 cups (150 ml) (MTS 40/…)
0.97 cups (230 ml) (MTS 40E…)
5.2
Technical data
CAUTION! Danger of leakage!
If the mechanical seal is damaged, small amounts of
oil may escape into the pumped fluid.
WARNING! Danger of personal injury!
The existing directives for accident prevention
must be adhered to.
WARNING! Danger of electric shock!
Danger from electrical current must be eliminated.
Local directives or general directives [e.g. NEC, IEC,
VDE etc.] and local energy supply companies must
be adhered to.
CAUTION! Danger of damage to the pump!
Only suspend the pump on the intended handle
using a chain. Never by the cable!
Summary of Contents for Drain MTS 40 Series
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