Glossary
Certificate of decontamination
A certificate of decontamination is enclosed by
the customer when returning the product to
the manufacturer to certify that the product
has been properly drained to eliminate any
environmental and health hazards arising from
components in contact with the fluid handled.
Check valve
Element of a sewage lifting unit which prevents
waste water from flowing back from the
discharge pipe into the lifting unit.
DIN 1986-3 and -30
German standard which stipulates technical
rules for the operation, maintenance and
servicing of drainage systems in buildings and
on premises
Discharge line
Pipe for transporting waste water to a level
above the flood level into the sewer system
DOL starting
For low power ratings (usually up to 4 kW), the
three-phase motor is connected directly to the
mains voltage.
Dual-pump unit
Sewage lifting unit containing a duplicate
pumping device which starts up automatically
as necessary
Effective volume
Volume in the collection tank between start
and stop level that can be lifted
EN 12 056-4
European standard governing the selection,
operation and maintenance of sewage lifting
units within buildings and sites.
Flood level
Maximum backflow level of waste water in a
drainage system
EN 12050-1
European Standard for sewage lifting units
which are used to dispose of sewage with
faeces occurring below the flood level of
buildings and land. It defines general
requirements as well as principles of
construction and testing.
Inlet line
Pipe used for draining waste water from
sanitary installations into the lifting unit
Noise characteristics
The noise emission to be expected, indicated as
sound pressure level LpA in dB(A)
Nominal diameter DN
Identifier (inside diameter) used for
characterising mating components such as
pipes, pipe connections and fittings
Separator
Device which uses gravity to prevent any
ingress of harmful substances into the drainage
system by separating these substances from the
waste water, e.g. grease separator
Sewage lifting unit
Device for collecting and automatically lifting
waste water with or without faeces above the
flood level
Stormwater
Water from natural precipitation which has not
been contaminated by any form of use
Vent line
Pipe provided to limit pressure fluctuations
within the sewage lifting unit. The vent line is
led through the roof.
Waste water
Water which has been changed by some type
of use, e.g. domestic waste water
Working space
The space required for performing work on the
unit
Glossary
mini-Compacta
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