MultiFree-Pump with vortex impeller0 pages

1
Application
MultiStream pumps are suitable for handling effluent or sewage
in municipal and industrial pumping stations as well as in surface
water drainage applications. The smaller typs are also used very
successfully as portable units to deal with emergency situations.
ð The sewage pumps UAK are suitable für handling sewage
water.
ð In hazardous locations explosion-proof sewage pumps UFK
have to be used.
The adjustable axial gap of the MultiStream-pump makes it possible
to re-optimize the efficiency in case of abrasion by adjusting
only one single screw. This can be done very cost-effective when
the maintenance is carried out and the pump keeps its optimum
performance on a long-term basis.
MultiStream-pumps are recommendet for:
ð effluent which contains fibrous matter
ð effluent which contains solids
ð mixed water
ð raw effluent
ð raw sludge
ð rainwater
Technical data
Pump
Vertical, single-stage, submersible, pump case with horizontal discharge,
single channel impeller and short shaft extension. This
provides a longer service life for the ball bearings and the mechanical
seal.
Bearings
Common shaft for pump and motor, deep groove and inclined
ball bearings, grease-packed.
Seal
Silicon carbide mechanical seal independent of sense of rotation,
oil chamber and artificial carbon mechanical seal or rather SiC
mechanical seal (or duplex rotary shaft seal up to size 35) as secondary
seal, safe to run dry.
Motor
Submersible, enclosure IP68, activation through special purpose
plug or control unit, protected by winding thermostats, UFK types
tested by PTB (German tech. inspection authority), type of protection
II 2 G EEx d IIB T4.
Materials
Pump, motor case and impeller in GG grey cast iron (single channel
impeller with n = 2800 min-1 from size 55/2 in spheroidal
graphite iron GGG), corrosion protected shaft (no contact with
pumped liquid), flexible rubber sheathed cable.
Installation
Install pump vertically with guide rail system or pump base. Flange
coupling according to DIN, coupling size B or hose tail bend
up to 3“ possible.
Scope of supply
Pump acc. to EN 12050 with 10 m cable without plug, without
pump base:
a) as sewage pump UAK
b) as explosion-proof sewage pump UFK
D 302–4.2E-0810
Sewage pumps MultiStream
Adjustable single-channel impeller
Connection alternatively PN 6 or PN 10
Safe to run dry
Controllable oil chamber
Plug type cable connection
(UAK/UFK 10...–100...)
SiC mechanical seal independent of
sense of rotation
Moisture sealed cable inlet
Built-in motor protection
Types of operation: Up to 40°C medium temperature
UAK/UFK Motor submerged: continuous operation S1
UAK/UFK Motor not submerged intermittent operation S3
(e.g. 15% = 1,5 min operation and 8,5 min pause)