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3. General description
3.1. Application
Pump is suitable for pumping sewage, effluents, sludge
and surface water. The pumps are used for installations in
public and private sector, trade and industry. The pumps
can convey abrasive medium as surface water. For high-
ly abrasive content, such as concrete-gravel and sand in
the medium, it is necessary to protect the impeller and
pump housing against excessive abrasion or to shorten
the maintenance interval.
Before the pumping of chemically aggressive liquids, the
resistance of the pump materials must be checked.
The pumps are available in high quality materials of all
components (Stainless steel, bronze).
Use in sip operation is not permitted. According to the
type of installation and motor cooling, the machine
must be submerged in pumped liquid at least up to
the top edge of the pump or motor housing.
The motor housing must always be completely sub-
mersed for wet installation without a water jacket.
The temperature of the conveyed medium may be up to
40 °C, or up to 60 °C for a short period. The maximum
density of the medium is 1040 kg/m³ and the pH may be
from 6 – 11. Stainless steel variants can be used at a pH of
4 - 14. 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. Depending on the composition, it may be
necessary to use special sealing materials.
3.2. Types of use
The motors are designed for continuous operation (S1),
maximum 15 starts per hour. The hydraulic is designed for
permanent operation, e.g. supply of industrial water.
42 | EngliSH
3.3. Construction
The pump consists of the motor and the pump housing
as well as the impeller which belongs to it. All important
parts of the pump are characterized by generous dimen-
sioning.
No.
Description
1
Handle
2
Motor housing
3
Type label
4
Pump housing
5
Suction inlet
6
Discharge
7
Cable entry
3.3.1. Type label
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