Side Channel Pumps CEH 1201 ... 6108 CEH 1201/6 ... 6107/6 with magnetic coupling0 pages

Side Channel Pumps
CEH 1201 ... 6108
CEH 1201/6 ... 6107/6 with magnetic coupling
PUMP TECHNOLOGY CEH P III / 16
133.51325.54.01 E 08/98
TECHNICAL DATA
Output: max. 35 m³/h
Delivery head: max. 354 m (at 1450 rpm)
Speed: max. 1800 rpm
Temperature: max. 180 °C
Casing pressure: PN 40 / PN 25
Shaft sealing: without shaft seal
because of magnetic coupling
Flange connections: DIN 2501 PN 40
Direction of rotation: anti-clockwise, seen from
the drive on the pump
APPLICATION
CEH pumps are side channel pumps with NPSH inducer stage
suitable to handle liquids which do not contain solid matters or
abrasive admixtures. The NPSH inducer stage allows the operation
under unfavourable pumping conditions at suction side, also at positive
suction heads lower than 0,5 m.
The special ability of these pumps to handle liquids at the boiling point
has led to a wide field of application when condensate, distillate,
coolant and liquefied gas shall be pumped.
CEH pumps are applied in the chemical and petrochemical industry, in
the pharmaceutical industry, in the plastic and rubber industry, in the
surface finishing and hardening, in the foot, beverage and tobacco
industry and in the air conditioning and refrigeration engineering.
Pumps of the series CEH××××/6 with retaining sage to guarantee the
min. filling level in the pump are especially applied to handle liquids
under vapour pressure, also from underground tanks.
DESIGN
Pumps of the series CEH are horizontal, selfpriming side channel
pumps, capable of handling gas along with the medium, in segmentaltype
construction, with open vane wheel impeller as well as prearranged
centrifugal stage for attaining favourable NPSH values. The
sealing to atmosphere is effected glandless by an isolation shroud; the
driver power is transmitted contactless by a magnetic coupling. The
use of stable permanent magnetic material ensures the transmission
of the nominal torque and given protection against overload.
On the basis of the compact close coupled design has been created a
pumping unit that is easily to be installed. All IEC standard motors of
the construction type IM B 35 are applicable. This design permits the
operation of the pump without any additional coupling. Thus the
alignment, a source of trouble, can be omitted.
The pumps of the series CEH××××/6 are equipped with an additional
retaining stage, behind the centrifugal stage, to prevent the emptying
of the pump during standstill and thus keeping the selfpriming ability of
the pump.
The simple construction of the pump allows the assembly or
disassembly without special tools.
CONSTRUCTION
Casing pressure:
Construction size 1200, 3100, 3600, 4100, 5101 to 5104:PN 40
Construction size 5105 to 5108, 6100 :PN 25
Please note:
Casing pressure = zero head + inlet pressure
Test pressure 52 bar resp. 33 bar
Branch positions:
Suction branch arranged axially, discharge branch radially
upwards.
Flanges:
The flanges comply with DIN 2535/PN 40
Flanges according to DIN 2512 with groove and bored to ANSI
150 or 300 as well as to BS table F is possible.
Hydraulics:
First hydraulics, designation of this construction type: A.
Bearings:
The pump shaft runs in two sleeve bearings of pure silicon carbide
(SiC), lubricated by the pumping medium
The remaining axial forces are absorbed by axial sleeve bearings.
Optionally available a friction reducing coating of the bushings to
avoid critical operation.
The outer magnet is directly fixed on the motor shaft consequently
the external bearing becomes unnecessary. Designation of this
construction type: .F
Sense of rotation:
Anti-clockwise when seen from the drive on the pump.
Shaft sealing:
Without shaft seals by an isolation shroud Transmission of the
driving moment by a magnetic coupling.
Designation of this construction type: see last page.
CEH pump with shell