Scope Of Supply; Description And Operation; Pump Description - Wilo Drain MTS 40 Instrucciones De Instalación Y Funcionamiento

5.3 Scope of supply

• Pump with 10 m connecting cable:
• DM version with free cable end
2
(H07 RN-F 6x1 mm )
• EM version ready-wired (H07 RN-F 4x1.5 mm
with connector box incl. start-up/operating
capacitor
• Installation and Operating Instructions
5.4 Accessories
Accessories must be ordered separately.
• Switchgear for 1 or 2-pump operation
• external monitoring devices / tripping units
• level controller (level sensor / float switch
• Accessories for transportable wet-well installa-
tion
• Accessories for stationary wet-well installation
see catalogue for detailed list.

6 Description and operation

6.1 Pump description

In order to ensure that the pump remains suffi-
ciently cool in continuous mode, the submersible
motor-driven pump must always be flooded with
the flow medium. The pump is driven by an
encased three-phase or single-phase motor
which is corrosion-resistant and impermeable to
pressurised water.
The pump housing and single-channel impeller
are made from grey cast iron. The flow medium is
sucked in on the underside of the pump through
the openings on the cutting device and is expelled
through the discharge side into the pipe.
The cutting device cuts up all dissectible constit-
uents so that they can be transported through the
single-channel impeller and the DN 40 pressure
pipe. The blades, cutters and counter-cutters are
made of hard metal. Constituents which cannot be
cut, such as stones or pieces of metal, damage the
cutting device and should therefore not be
allowed into the pump.
The motor chamber is sealed from the pump
chamber using a mechanical seal on the fluid side
and a radial shaft seal on the motor side. To ensure
that the mechanical seal is always lubricated and
cooled, even when running dry, the mechanical
seal chamber is filled with oil (see also 5.2).
CAUTION! Risk of leak!
If the mechanical seal is damaged, small quanti-
ties of oil may leak into the flow medium.
In addition to being connected by a foot bend
DN 40, the MTS 40 pumps can also be connected
to the pressure pipe using an elbow pipe (inner/
outer thread):
• Pressure pipe DN32 (R1 ¼):
MTS40/21...27 using an 90° elbow pipe (inner/
outer thread) R1 ¼.
• Pressure pipe DN40 (R1 ½):
MTS40/21...39 using an 90° elbow pipe (inner/
outer thread) R1 ½ and threaded flange with neck
as per DIN 2566 with inner thread R1 ½.
Installation and operating instructions Wilo-Drain MTS 40
The motors are equipped with a winding protec-
tion contact (WSK) that automatically switches
off the motor if there is a threat of it overheating
and switches it back on again once it has cooled
2
) down. On 3~motors, the winding protection con-
tact must be connected to the switchgear and
analysed there.
7 Installation and electrical connection
Installation and electrical connection should be
carried out in accordance with local regulations
and only by qualified personnel!
WARNING! Risk of personal injury!
The relevant accident precaution regulations
must be observed.
WARNING! Risk of electric shock!
Potential dangers caused by electrical energy
must be excluded.
Local or general regulations [e.g. IEC, VDE, etc.]
and directives from local energy supply compa-
nies are to be followed.
7.1 Installation
The pump is designed for the following installa-
tion types: stationary and transportable wet-well
installation.
CAUTION! Risk of damage to the pump!
The pump must only be suspended by a chain
from the handle provided. Never suspend or
carry using the cable!
• The pump must be installed in a frost-free place.
• The shaft must be free from coarse solids (e.g.
building rubble) prior to installation and commis-
sioning.
• The pipes must be assembled stress-free. The
pipes must be attached in such a way that the
pump does not bear the weight of the pipes.
• In order to protect against possible reflux from the
public sewage system, the pressure pipeline
should be formed as a "pipe loop". It must be
placed over the locally set reflux level (usually
street level).
• When assembling the pump for stationary use, a
non-return valve and a shut-off valve with full
flow cross-section should be built into the pres-
sure piping. In the case of double pumps these fit-
tings should be installed for each pump.
NOTE:
Optimally, the valves should be installed outside
of the pump, in a separate shaft (valves shaft).
Where this is not feasible, the valves should not be
connected directly to the discharge side or the
pipe bend. A device for venting the pump should
be provided, otherwise the insulating air cushion
may not open the non-return valve.
• "Original Wilo accessories" are recommended to
ensure the fault-free operation of the pump /
installation.
English
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