General Description; Use; Types Of Use; Construction - Homa MX-ET Serie Originalbetriebsanleitung

3. General description

3.1. Use

HOMA pumps convey domestic, communal and industrial
wastewater, faeces and sludges, even those containing a
high proportion of solids and fibres, and sewage of every
kind. From a small residential or industrial building to large
pump stations and sewage treatment plant. These pumps
are not suitable for conveying liquids containing seriously
abrasive fractions (e.g. sand, gravel or stones). If the con-
veyed medium contains chemically aggressive fractions,
the ability of the materials to withstand them is to be re-
spected without fail. To suit this need, units made partially
or completely of highly resistant materials (stainless steel,
bronze) are also available.
Their use in slurp operation is not permitted. Depend-
ing on the type of installation and motor cooling, the
minimum level of the conveyed medium must always
lie above the upper edge of the pump housing.
Conveying Medium:
• The temperature of the conveyed medium may be up
to 40 °C.
• In the case of non-explosion-proof submersible mo-
tor pumps, up to 60°C are permitted in the conveying
medium for a short period.
• The salt concentration in the pumped medium may
be a maximum of 3.5% at up to 1°C to 15°C medi-
um temperature. At 16°C - 20°C a maximum of 1% is
permissible.
• The maximum density of the medium is 1040 kg/m³.
The solid content depends mainly on the impeller
type and is mentioned in chapter 3.3.
• The pH may be from 6 – 11. However, the pH alone
only serves as a guideline. In any case, alongside
the composition of the medium, the durability of the
pump must be requested from the manufacturer. De-
pending on the composition, it may be necessary to
use special sealing materials.

3.2. Types of use

The motor is designed for the S1 (continuous) mode of
operation, with a max. switching rate of 20 switching op-
erations / hour. The hydraulics are suitable for constant
continuous operation, e.g. for supplying industrial water.
30 | ENGLISH

3.3. Construction

The fully submersible unit consists of the motor, the pump
housing and the appropriate blade wheel. All important
components are generously dimensioned.
No. Description
1 Pump housing
2 Suction inlet
3 Discharge
4 Motor housing
5 Type plate
6 Cable entry
7 Ear for sling gear

3.3.1. Data plate

3Ph
3Ph Ex