1.2.2 Type key
MVI 16 08
3 / 16 / E / 3 - 400 - 50 - 2 / XX / X
Design MVI
(Multicellulaire, Vertic
special steel( Inox-)
centrifugal pump)
Flow rate [m
3
/h]
(2-pole/ 50 Hz)
Number of
impellers in row
Material quality:
Hydraulic / base
1 R unoccupied
2 R 1.4404 / 1.4408 (AISI 316 L)
3 R 1.4301 / GG25 (coated)
maximum permissible working
pressure [bar] PN 16 or PN 25
EPDM seals
(KTW/WRAS)
VITON seals
Main voltage
3 ~ 400 V
3 ~ 230 V
50 Hz or 60 Hz frequency
2- or 4- pole motor
Manufacturer's key
2. Safety
These instructions contain important information
which must be followed when installing and
operating the pump. These operating instructions
must therefore be read before assembly and
commissioning by the installer and the responsible
operator. Both the general safety instructions
in the "Safety precautions" section and those in
subsequent sections indicated by danger symbols
should be carefully observed.
2.1 Danger symbols used in these operating
instructions
Safety precautions in these operating instructions
which, if not followed, could cause personal injury
are indicated by the symbol:
when warning of electrical voltage with
The following symbol is used to indicate that by
ignoring the relevant safety instructions, damage
could be caused to the pump/machinery and its
functions:
WARNING!
2.2 Staff training
The personnel installing the pump must have the
appropriate qualifications for this work.
2.3 Risks incurred by failure to comply with the
safety precautions
Failure to comply with the safety precautions could
result in personal injury or damage to the pump or
WILO SE 11/2010
installation. Failure to comply with the safety
precautions could also invalidate any claim for
damages.
In particular, failure to comply with these safety
precautions could give rise, for example, to the
following risks:
• Failure of important pump or machinery functions,
• Personal injury due to electrical, mechanical and
bacteriological causes.
• Damage to property.
2.4 Safety precautions for the operator
Existing regulations for the prevention of accidents
must be followed.
Dangers caused by electrical energy are to be
excluded. Directives issued by the VDE [German
Association of Electrical Engineers] and the local
electricity supply companies are to be observed.
2.5 Safety information for inspection and assembly
The operator is responsible for ensuring that
inspection and assembly are carried out by
authorised and qualified personnel who have
studied the operating instructions closely.
Work on the pump/machinery should only be
carried out when the machine has been brought
to a standstill.
2.6 Unauthorized modification and manufacture of
spare parts
Changes to the pump/machinery may only be
made in agreement with the manufacturer.
The use of original spare parts and accessories
authorised by the manufacturer will ensure safety.
The use of any other parts may invalidate claims
invoking the liability of the manufacturer for any
consequences.
2.7 Improper use
The operating safety of the pump or installation
supplied can only be guaranteed if it is used in
accordance with paragraph 1 of the operating
instructions. The limiting values given in the
catalogue or data sheet must neither be exceeded
nor allowed to fall below those specified.
3. Transport and storage
During transport and in storage
WARNING!
the pump must be protected
against moisture, frost and mechanical damage.
The pump unit is to be transported with the shaft
horizontal. When storing, ensure that the pump
unit cannot overturn as a result of top-heaviness.
4. Product and accessory description
4.1 The pumps
The pump is a multistage (1–16 stages) normal
suction vertical high pressure centrifugal pump
with an in-line design, i.e. the inlet and outlet
pressure glands are in a line. The pump is available
in 2 pressure versions, PN 16 and PN 25 with
integrally cast circular flanges.
The pump (Fig. 1) stands on a grey cast iron pump
footplate which serves as a fixing base (13).
The stage casings (4) are in a multiple modular
construction. The impellers (10) are fitted on a
English
3