Safety Precautions; Transport And Storage; Description Of Product And Accessories - Wilo MVI 2..-6 Betriebsanleitung

1.2.2 Series specifications
MVI 4 08 1 / 16 / E / 3 ~ 400 - 50 - 2/XX/X
MVI (Multistage
Vertical stainless
steel (Inox) centrifugal
pump) design
Flow rate [m 3 /h]
(2-pole/ 50 Hz)
Number of impellers
in row
Steel grade:
1 → 1.4301 (AISI 304)
2 → 1.4404 (AISI 316L)
maximum permissible
working pressure [bar]
gaskets – EPDM (KTW/WRAS)
gaskets – VITON
Mains voltage
3 ~ 400 V
1 ~ 230 V
50Hz or 60Hz frequency
2- or 4- pole motor
Manufacturer's key

2. Safety precautions

These instructions contain important information which must be
followed when installing and operating the pump. It is therefore impe-
rative that they be read by both the installer and the operator before
the pump is installed or started up.
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 follow-
ed, could cause personal injury are indicated by the symbol:
Safety precautions warning of danger due to electricity are indicated
by the symbol:
Safety precautions which, if not followed, could damage the pump or
installation and cause it to malfunction are indicated by the word:
WARNING!
2.2 Qualified Personnel
The personnel installing the pump must have the appropriate qualifica-
tions 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 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:
– the failure of important parts of the pump or installation,
– personal injury due to electrical, mechanical and bacteriological
causes.
– material damage.
2.4 Safety precautions for the operator
Existing regulations for the prevention of accidents must be followed.
To prevent the risk of electric shock or electrocution VDE regulations
and those of the local supply company must be followed.
2.5 Safety precautions for inspection and installation
The operator must ensure that all inspection and installation work is
carried out by authorized and qualified specialists who have carefully
studied these instructions. In principle, work should not be carried out
on a running pump or installation.
2.6 Unauthorized alterations and manufacture of spare parts
Alterations to the pump or installation may only be carried out with the
manufacturer's consent. The use of original spare parts and accesso-
ries authorized by the manufacturer will ensure safety. The use of any
other parts may invalidate claims invoking the liability of the manufac-
turer for any consequences.
2.7 Improper use
The operational safety of the pump or installation supplied can only be
guaranteed if it is used in accordance with paragraph 1 of the opera-
ting instructions. The limits given in the catalogue or data sheet must
under no circumstances be exceeded.

3. Transport and Storage

During transport and in storage the pump must be
WARNING!
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. Description of product and accessories

4.1 Pump description
The pump is a multistage (2-20 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 supplied in one of two
outlet designs:
PN 16: with welded oval flanges,
PN 25: with welded 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 single shaft
(11). The pressure casing (5) guarantees a fail-safe seal. All parts in
contact with the fluid, such as stage casings, impellers, pressure
casing and pump base (12) with flanges (6) are made of chromium
nickel steel. The shaft hole through the pump casing is sealed with an
axial face seal (3). The pump and motor shafts are linked together by a
clutch (8). All parts of the drinking water version (version E) which are
in contact with the fluid have been cleared by KTW and WRAS and are
therefore suitable for use with drinking water.
The speed of the pump can be controlled when connected to a
frequency converter (see paragraph 5.3).
4.2 Components supplied
– high pressure centrifugal pump
– for PN 16: 2 oval flanges (mating flanges) with internal threads,
gaskets and screws,
– Installation and Operating Instructions.
4.3 Accessories
See catalogue or data sheet
ENGLISH
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