Pumped Fluids; Sound Pressure; General Description; Usage - Homa C250W Originalbetriebsanleitung

Caution!
Never operate the machine if the safety and monitor-
ing devices have been removed or damage, or if they
do not work.

2.8. Pumped fluids

Each pumped fluid differs in regard to composition, cor-
rosiveness, abrasiveness, TS content and many other
aspects. Generally, our products can be used for many
applications. For more precise details, see chapter 3, the
machine data sheet and the order confirmation. It should
be remembered that if the density, viscosity or the gener-
al composition change, this can also alter many parame-
ters of the product.
Different materials and impeller shapes are required for
different pumped fluids. The more exact your specifica-
tions on your order, the more exactly we can modify our
product to meet your requirements. If the area of applica-
tion and/or the pumped fluid change, we will be happy to
offer supportive advice.
When switching the product into another pumped fluid,
observe the following points:
• Products which have been operated in sewage or
waste water must be thoroughly cleaned with pure
water or drinking water before use.
• Products which have pumped fluids which are haz-
ardous to health must always be decontaminated
before changing to a new fluid. Also clarify whether
the product may be used in a different pumped fluid.
• With products which have been operated with a lu-
bricant or cooling fluid (such as oil), this can escape
into the pumped fluid if the mechanical shaft seal is
defective.
Danger - explosive fluids!
It is absolutely prohibited to pump explosive liquids
(e.g. gasoline, kerosene, etc.). The products are not
designed for these liquids!

2.9. Sound Pressure

Depending on the size and power (kW), the pump has
a sound pressure of about 40dB (A) to 70dB (A) during
operation. However, the actual sound pressure depends
on several factors. These are, for example, the type of
installation and set-up, mounting of accessories, piping,
operating point, immersion depth, and much more.

3. General Description

3.1. Usage

The pump models C(H)250 and C(H)260 are single-stage,
transportable centrifugal pumps that are suitable for con-
veying rainwater and slightly soiled water with solids of
a diameter of up to 10 mm. Areas of application are, for
example, removing water from cellars, keeping trenches
and shafts dry, emptying collection basins, as an emer-
gency pump in case of floods, reciprocating pump for gar-
den ponds etc.
The designs of pump model CH250 and CH260 convey
chemically-corrosive dirty water from households such as,
for example, salt water (up to 15%) from water softening
systems, condensate from condensing boilers etc.
For chemically-corrosive media, consultation is needed,
as the resistance of the pump materials is to be checked.
Abrasive or other substances that attack materials may
destroy the pump. The pump is not suitable for use in
conveying media with abrasive dirt, sand, mud or loam
admixtures.
The maximum density of the conveying medium is 1040
kg/m³.

3.2. Usage Types

The pump is designed for operating mode S1 (continuous)
with a max. switching frequency of 30 switches/hour with
a conveying medium temperature of up to 35°C.
If the temperature of the medium is between 36°C and
a maximum of 60°C, the operating modes S2 (short-time
operation) and S3 (intermittent operation) are permitted.
Please find the precise data in the tables in Chapter 3.3.2
Motor.
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