Wilo Economy MHIE 1~ Installation And Operating Instructions Manual

Wilo-Economy MHIE 1~

Pioneering for You

4 090 996-Ed.04 / 2016-04-Wilo

de Einbau- und Betriebsanleitung
en Installation and operating instructions
fr Notice de montage et de mise en service
nl Inbouw- en bedieningsvoorschriften

es Instrucciones de instalación y funcionamiento
it Istruzioni di montaggio, uso e manutenzione
pt Manual de Instalação e funcionamento
ru  Инструкцияпомонтажуиэксплуатации

Fig. 1:

Fig. 3:

Fig. 2:

Fig. 4:

Fig. 5:

or/ou

or/ou

Fig. 6: Fig. 7:

Fig. 8:

or/ou

or/ou

Fig. 9:

Fig. 10:

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1 General

1.1 Applications

Pumps for pumping clear liquids in the residential
sector, in agriculture and in industry. Intake from
wells, springs, water streams, ponds ... not to be
used with Abyssinian wells (driven wells).

1.2 Technical data

• Maximum operating pressure: 10 bar

• Minimum intake pressure: 6 bar

• Temperature range:

- Version with seals and inserts made of EPDM*:

-15° to +110°C

- Version with seals and inserts made of VITON*:

-15° to +90°C

• Suction head:
depending on the Net Positive Suction Head
(NPSH) of the pump

• Ambient temperature (standard):
+40°C (in cases of higher temperatures, please
consult Wilo after-sales service)

• Sound pressure level 50/60Hz 0/+3 dB(A): 66

*Application in potable water sector: WRAS: English standard,

KTW: German standard.

2 Safety

These Installation and operating instructions con­tain basic information which must be adhered to
during installation and commissioning. For this
reason, these Installation and operating instruc­tions must, without fail, be read by the service
technician and the responsible operator before
installation and commissioning. It is not only the
general safety instructions which are listed here
under the main heading of Safety which must be
complied with, but rather also the special safety
instructions which are listed under the following
main headings.

2.1 Identification of notes in the Installation and
operating instructions

The safety instructions contained in these
Installation and operating instructions which, if
they are not observed, could endanger person­nel, are specially marked with the General danger
symbol,

and with

in cases of warnings against electrical voltage.

The word

is included with safety instructions which, if they
are not observed, could endanger the installation
and its function.

2.2 Personnel qualifications

The personnel responsible for installation must
be in possession of the respective qualifications
required for this work.

2.3 Danger in the event of nonobservance of the
safety instructions

The failure to observe the safety instructions
could result in dangers to personnel and pump/

installation. Nonobservance of the safety instruc­tions can result in the loss of any claims to dam­ages.
In particular, the failure to observe these instruc­tions could lead to the following hazards:

• Failure of important functions of the pump/instal­lation.

• Hazards to personnel resulting from electrical,
mechanical or bacteriological actions,

• Property damage.

2.4 Safety instructions for the operator

The existing regulations regarding accident pre­vention are to be complied with.
Hazards connected with electrical energy are to
be excluded. The regulations of the VDE (Verband
der Elektrotechnik Elektronik und Informations­technik e.V.) and of the local energy supply com­panies are to be complied with.

2.5 Safety instructions for inspection and installa­tion work

It is the responsibility of the operator to ensure
that all inspection and installation work is carried
out by authorised and qualified professionals
who have acquired sufficient information from a
detailed study of the Installation and operating
instructions.
As a fundamental principle, work may only be car­ried out on the pump/installation when it/they are
at a standstill.

2.6 Customer’s own conversions and spare parts
manufacture

Modifications to the pump/installation are not
permitted except after consultation with the
manufacturer. The use of original spare parts and
manufacturer-authorised accessories promotes
safety. The use of other parts could lead to the
cancellation of liability for the results of such
substitutions.

2.7 Improper use

The operating safety of the supplied pump/instal­lation is only guaranteed for conventional use
in accordance with Section 1 of the Installation
and operating instructions. It is not permitted to
exceed or fail to meet the limit values specified
in the catalogue/data sheet under any circum­stances.

3 Transport, handling and storage

The pump/installation is to be checked at once
upon delivery for any damage that may have
occurred in transit. If any damages are found, then
they are to be reported to the transport company
immediately within the time periods specified.

If the material is to be installed later,
then it must be stored in a dry location.
The material must be protected against
impact shocks and all external influen­ces (moisture, frost, etc.).

Handle the pump carefully so that the geometry
and alignment of the installation are not altered.

The pump is not permitted under any
circumstances to be raised on the fre­quency converter.

ATTENTION!

ATTENTION!

ATTENTION!

WILO SE 04/2016

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20

4 Products and accessories

4.1 Description (see Fig. 1-9):

1 : Foot valve with suction strainer (maximum

free-flowing cross-section 1 mm)
2 : Stop valve; on suction side
3 : Stop valve; on the pressure side
4 : Non-return valve
5 : Inlet/bleeder screw
6 : Drainage screw
7 : Pipe bracket
8 : Suction strainer
9 : Replenishment reservoir
10 : Tap water network
11 : Switch, switch amplifier with fuses
12 : Cock
13 : Pedestal
14 : Pressure sensor
15 : Diaphragm pressure vessel
16 : Gate valve for diaphragm pressure vessel
17 : Red LED
18 : Green LED
19 : Potentiometer
20 : Connection terminal
21 : Protection against low water level
HA : Maximum suction head
HC : Minimum suction head

4.2 The pump

Horizontal centrifugal pump.
Multistage, not self-priming.
Suction/outlet openings with thread.
Axial suction, radial outlet upwards.
Sealing on shaft passage by means of standard
mechanical seal.

4.3 The motor with frequency converter

Three-phase AC motor, two-pole, with frequency
converter.
Protection class: IP 54.
Insulation class: F

4.4 Accessories (optional)

• Suction kit

• Shut-off device

• Diaphragm pressure vessel

• Tank

• Non-return valve

• Foot valve with suction strainer

• Compensator

• Protection against low water level

(potable water network)
(see Fig. 5, Pos. 21)

• Pressure sensor control kit (sensor precision:

# 1%; utilisation between 30% and 100% of the
reading range).

5 Installation

Two types:

• see Fig 1: Suction mode.

• see Fig. 2: Pressure operation from replenish-
ment vessel (Pos. 9) or potable water network

(Pos. 10).

5.1 Installation

Install the pump at a readily accessible location
which is protected against external influences
(excessive rain or sunlight, frost) and which is as
near as possible to the extraction point.
Place the pump on a pedestal (Pos. 13) or directly
on a smooth, level base. Fixation of the pump
with 2 holes for Ø M8 bolts.

Note that the height of the installation
location and the temperature of the
fluid will diminish the suction capacity
of the pump.

Installation should be carried out in
pressure operation when temperatures
exceed 80°C.

5.2 Pipe connections

The installation must be sufficient for
the pressure that the pump generates
at maximum frequency and zero flow
volume.

- Connection with spiral-reinforced flexible hoses
or rigid pipe.

- Seal the pipe connections well with suitable

products. No air is permitted to enter the suc­tion line; lay the suction line with a continuous
rise (2%) (see Fig. 1).

- In the case of rigid pipes, take care to ensure that
the weight of the lines is not borne by the pump
alone. Utilise supports and/or pipe brackets (see

Figs. 1 + 2, Pos. 7).

Pump MHIE
type 200 400 800

Suction 1"1/4 - 1"1/2 -
opening 1"- (26-34) (33-42) (40-49)
Outlet 1" - 1"1/4 -
opening 1" - (26-34) (26-34) (33-42)

Pipe connections

Height Height loss Temperature Height loss
meter

0.00m 0.00mCL 20°C 0.20mCL
500m 0.60mCL 30°C 0.40mCL
1000m 1.15mCL 40°C 0.70mCL
   50°C 1.20mCL
   60°C 1.90mCL
   70°C 3.10mCL
   80°C 4.70mCL
   90°C 7.10mCL

100°C 10.30 mCL
110°C 14.70 mCL
120°C 20.50 mCL

ATTENTION!

ATTENTION!

ATTENTION!

Frequency 50 Hz 60 Hz
Voltages 1~230 V (±10%) 1~220 V (±6%)

Operational voltages and frequencies

WILO SE 04/2016

- The diameter of the suction line is never permit­ted to be smaller than the suction/pumping open­ing of the pump.

- Limit the horizontal length of the suction line
and avoid all possible sources of pressure losses
(elbows, valves, neckings, etc.).

Possible damage to the pump!
In order to protect the pump against
fluid hammers, install the non-return
valve on the pressure side.

In the frequency converter, the testing current
circuits are shielded from the performance
circuits with the aid of a simple insulation
(CEI664-1).
The installer must ensure that the external
testing current circuits (e.g.: pressure sensors,
external control of the setpoint…) are shielded
against any possible contact with people. If the
testing current circuits are to be connected to
the electric circuits corresponding to the safe­ty specifications of the SELV (TBTS), then an
additional insulation must be installed in order
to comply with the SELV (TBTS) classification.

5.3 Electrical connections

The electrical connections and testing must
be carried out by a licensed electrician and in
accordance with locally applicable standard
specifications.

The electrical properties (frequency, voltage,
nominal current) of the motor frequency convert­er are indicated on the name plate of the motor/
of the pump. A check is to be made as to whether
the motor frequency converter matches the cur­rent supply network to which it is intended to be
attached.
The frequency converter is equipped with a motor
protection feature. Constant protection of the
motor and of the pump are ensured by a continu­ous nominal/actual comparison of the current and
stored data.
In the event of excessively great resistance on
the part of the neutral conductor, a correspond­ing protection device must be installed upstream
from the motor frequency converter.
As a basic rule, provide switch amplifiers with
fuses (Type GF) for the protection of the network

(see Figs. 1 + 2, Pos. 11).

If a residual-current-operated protection switch
needs to be installed for personnel protection,
then use a selective universal-current-sensitive
residual-current-operated protection switch
with VDE certificate!
Adjust the safety switch in accordance with the
data specified on the name plate of the fre­quency converter.

Use connecting cables that meet applicable stan­dards.

Earth the pump/installation in accordance with
regulations.

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ATTENTION!

WILO SE 04/2016