Application Fields: It is applicable to a wide range of fields,
including commercial heating, air conditioning, water pressure
boosting, district heating and cooling, machining, cleaning, water
supply, wastewater treatment in industrial production, as well as
seawater desalination, drinking water treatment, municipal water
transmission, irrigation, solar water systems, and water supply for
residential communities and buildings.
Product Structure: The suction and discharge ports are on the same
horizontal plane. The part of the pump body in contact with the
liquid is made of high - grade stainless steel (EN 1.4401). It has
a built - in thrust control device and uses a standard motor. The
Grundfos cartridge shaft seal improves reliability and maintenance
convenience. Electrical energy is transmitted through a split -
type coupling, and the pipeline is connected by a PJE coupling. It
is equipped with a 3 - phase asynchronous motor with a cooling fan
and feet.
Technical Parameters
Liquid Parameters: It mainly transports water. The temperature
range is -20 - 90°C, and the operating temperature is 20°C. The
density is 998.2 kg/m³.
Performance Parameters: The pump speed is 2984 revolutions per
minute. The rated flow rate is 255 m³/h, the rated head is 220
meters, the maximum head is 284.5 meters. There are 6 impellers (2
of which are reduced - diameter impellers). The shaft seal
configuration is single - seal, and the main shaft seal model is
HQQV. It has obtained CE, UKCA, and SEPRO certifications, and has
the ACS certification for drinking water. The curve tolerance
complies with the ISO9906:2012 3B standard.
Material Information: The base is made of stainless steel (EN
1.4408, ASTM A351 CF8M), the impeller is made of stainless steel
(EN 1.4401, AISI 316), the bearing is WC/WC, the supporting bearing
is Graflon, the thrust control device uses SiC/WC, and the
materials meet European standards.
Installation Parameters: The maximum ambient temperature is 55°C,
the maximum operating pressure is 40 bar, and there are different
pressure limits at different temperatures (25 bar / 90 °C, 40 bar /
80 °C). The interface model is PJE. The inlet and outlet sizes are
both DN 200. The pipeline connection pressure rating is PN 40, and
the motor flange size is FF600.
Electrical Data: The motor meets the IEC standard, with the model
INNOMOTICS. The rated power is 200 kW, the power supply frequency
is 50 Hz, the rated voltage is 3 x 380D/660Y V, the rated current
is 345/199 A, the starting current is 790%, the power factor is
0.92, the rated speed is 2982 revolutions per minute. The IE
efficiency class is IE3 (full - load efficiency 95.8%, 3/4 - load
efficiency 96.1%, 1/2 - load efficiency 95.6%). The number of motor
poles is 2, the enclosure class (IEC 34 - 5) is IP55, the
insulation class (IEC 85) is F, and it has built - in PTC motor
protection.
Multistage In - line Pump
CRN
Vertical multistage centrifugal pump with the suction inlet and the
discharge outlet at the same horizontal level. The material of the
pump body in contact with the liquid is high - grade stainless
steel (EN 1.4401).
CRN Stainless Steel Vertical Multistage Centrifugal Pump: Strong
Corrosion Resistance
The CRN stainless steel vertical multistage centrifugal pump is an
in-line multistage pump, and different flow rates and pressures can
be selected according to needs. Made of high-grade AISI 316
stainless steel, it is highly suitable for various complex liquids
in applications such as ultrafiltration, reverse osmosis, machine
tools (cooling lubricants), distillation systems, swimming pools,
oils, alcohols, acids and alkalis, process water systems, and
processing operations.
Grundfos also provides a variety of CRN stainless steel vertical
multistage centrifugal water pumps approved by ATEX, which can be
selected according to different locations, degrees of danger, and
possible hazardous situations. The pumps approved by ATEX are
suitable for potentially explosive environments, which are usually
composed of air and combustible substances (such as gases, vapors,
mists, or dusts). Once ignited, these environments may cause an
explosion that can spread.

CRN 255-6-2 A-F-A-E-HQQE
Vertical multistage centrifugal pump with the inlet and outlet on
the same horizontal plane (inline). The material of the pump body
in contact with the liquid is high-grade stainless steel. The
built-in thrust handling device can absorb the hydraulic axial
force, so a standard motor can be used. The Grundfos cartridge
shaft seal can improve the reliability of the machine and the
safety of operation, making maintenance more convenient. Electrical
energy is transmitted through a split-type coupling. The pipe
connection is realized through a DIN flange. An asynchronous motor
with three phases, a cooling fan and feet is installed on the water
pump.
Liquid:
Transferred liquid: Water
Liquid temperature range: -20.. 120 °C
Liquid temperature during operation: 60 °C
Density: 983.2 kg/m³
Technology:
Pump speed on which the pump data is based: 2984 revolutions per
minute
Rated flow rate: 255 m³/h
Rated head: 220 meters
Pump orientation: Vertical
Shaft seal configuration: Single
Main shaft seal: HQQE
Shaft seal code: HQQE
Approvals: CE, UKCA, SEPRO
Approvals for drinking water: ACS
Curve tolerance: ISO9906:2012 3B
Materials:
Base: Stainless steel
Base: EN 1.4408
ASTM A351 CF8M
Impeller: Stainless steel
EN 1.4401
AISI 316
Bearings: WC/WC
Support bearing: Graflon
Thrust handling device: SiC/WC
Material certified according to: European standards
Installation:Maximum ambient temperature: 55 °C
Maximum operating pressure: 40 bar
Maximum pressure at the specified temperature: 25 bar / 120 °C
40 bar / 80 °C
Interface model: DIN
Inlet size: DN 200
Outlet size: DN 200
Pressure rating for pipe connection: PN 40
Flange size for motor: FF600
Electrical data:
Motor standard: IEC
Motor model: INNOMOTICS
Rated power - P2: 200 kW
Power required by the pump (P2): 200 kW
Power supply frequency: 50 Hz
Rated voltage: 3 x 380D/660Y V
Rated current: 345/199 A
Starting current: 790 %
Cos phi - Power factor: 0.92
Rated speed: 2982 revolutions per minute
Efficiency: IE3 95.8%
IE efficiency class: IE3
Motor full-load efficiency: 95.8 %
Motor efficiency at 3/4 load: 96.1 %
Motor efficiency at 1/2 load: 95.6 %
Number of motor poles: 2
Encapsulation class (IEC 34-5): IP55
Insulation class (IEC 85): F
Motor number: M1U05352
Controller:
Frequency converter: None
Others:
Terminal box position: 6
Minimum efficiency index, MEI ≥: 0.70
Net weight: 1540 kg
Gross weight: 1770 kg
Transport volume: 4.25 m³
Thrust handling device: Y
Place of origin: CN
Custom tariff no.: 84137099.90