GRUNDFOS DATA BOOKLET CRE2-8 A-F-A-E-HQQE 3x4 6 HZ Grundfos pump 96514642 Thank you for your interest in our products. Please contact us for more information, or visit our website https://www.lenntech.com/grundfos/cre2/96514642/cre-2-8-a-f-a-e-hqqe.html info@lenntech.com tel. +31 152 61 9 fax. +31 152 616 289 BE > THINK > INNOVATE
Position Qty. Description 1 CRE 2-8 A-F-A-E-HQQE Product No.: On request Vertical, multistage centrifugal pump with inlet and outlet ports on same the level (inline). The pump head and base are in cast iron all other wetted parts are in stainless steel. A cartridge shaft seal ensures high reliability, safe handling, and easy access and service. Power transmission is via a rigid split coupling. Pipe connection is via DIN flanges. The pump is fitted with a 3-phase, fan-cooled asynchronous motor. The motor includes a frequency converter and PI controller in the motor terminal box. This enables continuously variable control of the motor speed, which again enables adaptation of the performance to a given requirement. An operating panel on the motor terminal box enables setting of required setpoint as well as setting of pump to "Min." or "Max." operation or to "Stop". The operating panel has indicator lights for "Operation" and "Fault". Communication with the pump is possible by means of Grundfos GO Remote (accessory). The remote control enables further settings as well as reading out of a number of parameters such as "Actual value", "Speed", "Power input" and total "Power consumption". The terminal box holds terminals for these connections: pump start/stop input (potential-free contact) remote setpoint setting via analog signal, -1 V, (4)-2 ma 1 V voltage supply for setpoint potentiometer, Imax = 5 ma three analog sensor inputs, -1 V, (4)-2 ma 24 V voltage supply for sensor, Imax = 4 ma one analog output three digital inputs two Pt1 inputs two potential-free fault signal relays with changeover contact, reporting "Fault", "Operation" or "Ready" RS-485 GENIbus connection interface for Grundfos CIM fieldbus module. Further product details An external sensor can be connected if controlled pump operation based on for example flow, differential pressure or temperature is required. An operating panel on the motor terminal box enables setting of required setpoint as well as setting of pump to "Min." or "Max." operation or to "Stop". The operating panel has indicator lights for "Operation" and "Fault". Communication with the pump is possible by means of Grundfos GO Remote (accessory). The remote control enables further settings as well as reading out of a number of parameters such as "Actual value", "Speed", "Power input" and total "Power consumption". Steel, cast iron and aluminium components have an epoxy-based coating made in a cathodic electro-deposition (CED) process. CED is a high-quality dip-painting process where an electrical field around the products ensures deposition of paint particles as a thin, well-controlled layer on the surface. An integral part of the process is a pretreatment. The entire process consists of these elements: 1) Alkaline-based cleaning. 2) Zinc phosphating. 3) Cathodic electro-deposition. 4) Curing to a dry film thickness 18-22 my m. The colour code for the finished product is NCS 9/RAL 95. Pump A long split coupling connects the pump and motor shaft. It is enclosed in the motor stool by means of two coupling guards. The long coupling makes it possible to replace the shaft seal without removing the motor from the pump. 1/14
The pump head, pump head cover and flange for motor mounting is made in one piece. The pump head has a combined 1/2" priming plug and vent screw. The pump is fitted with a balanced O-ring seal unit with a rigid torque-transmission system. This seal type is assembled in a cartridge unit which makes replacement safe and easy. Due to the balancing, this seal type is suitable for high-pressure applications. The cartridge construction also protects the pump shaft from possible wear from a dynamic O-ring between pump shaft and shaft seal. Primary seal: Rotating seal ring material: silicon carbide (SiC) Stationary seat material: silicon carbide (SiC) This material pairing is used where higher corrosion resistance is required. The high hardness of this material pairing offers good resistance against abrasive particles. Secondary seal material: EPDM (ethylene-propylene rubber) EPDM has excellent resistance to hot water. EPDM is not suitable for mineral oils. The shaft seal is screwed into the pump head. The chambers and impellers are made of stainless-steel sheet. The chambers are provided with a PTFE neck ring offering improved sealing and high efficiency. The impellers have smooth surfaces, and the shape of the blades ensure a high efficiency. The base is made of cast iron. The flanges and base are cast in one piece. The outlet side of the base has a drain plug. The pump is secured to the foundation by four bolts through the base plate. Motor The motor is a totally enclosed, fan-cooled motor with principal dimensions to IEC and DIN standards. The motor is flange-mounted with free-hole flange (FF). Motor-mounting designation in accordance with IEC 634-7: IM B 5 (Code I) / IM 31 (Code II). Electrical tolerances comply with IEC 634. The motor efficiency is classified as IE3 in accordance with IEC 634-3-1. The motor requires no external motor protection. The motor control unit incorporates protection against slow- and quick-rising temperatures, e.g. constant overload and stalled conditions. The terminal box holds terminals for these connections: 2/14
Position Qty. Description pump start/stop input (potential-free contact) remote setpoint setting via analog signal, -1 V, (4)-2 ma 1 V voltage supply for setpoint potentiometer, Imax = 5 ma three analog sensor inputs, -1 V, (4)-2 ma 24 V voltage supply for sensor, Imax = 4 ma one analog output three digital inputs two Pt1 inputs two potential-free fault signal relays with changeover contact, reporting "Fault", "Operation" or "Ready" RS-485 GENIbus connection interface for Grundfos CIM fieldbus module. Technical data Controls: Frequency converter: Pressure sensor: Built-in N Liquid: Pumped liquid: Water Liquid temperature range: -2.. 12 C Liquid temperature during operation: 2 C Density: 998.2 kg/m³ Technical: Rated flow: Rated head: Pump orientation: Shaft seal arrangement: Code for shaft seal: Approvals on nameplate: Curve tolerance: Materials: Base: Impeller: Bearing: 25.3 m³/h 136.6 m Vertical Single HQQE CE, EAC,ACS ISO996:212 3B Cast iron EN 1561 EN-GJL-2 ASTM A48-25B Stainless steel EN 1.431 AISI 34 SIC Installation: Maximum ambient temperature: 4 C Maximum operating pressure: 25 bar Max pressure at stated temp: 25 bar / 12 C 25 bar / -2 C Type of connection: DIN Size of inlet connection: DN 5 Size of outlet connection: DN 5 Pressure rating for pipe connection: PN 25 Flange rating inlet: 3 lb Flange size for motor: FF3 Electrical data: Motor standard: IEC Motor type: 16MD IE Efficiency class: IE3 Rated power - P2: 15 kw Power (P2) required by pump: 15 kw Mains frequency: 5 Hz Rated voltage: 3 x 38-48 V Rated current: 3.-26. A Cos phi - power factor:.91-.86 3/14
Position Qty. Description Rated speed: 48-354 rpm Efficiency: IE3 91,9% Motor efficiency at full load: 91.9 % Number of poles: 2 Enclosure class (IEC 34-5): IP55 Insulation class (IEC 85): F Others: Minimum efficiency index, MEI :.7 Net weight: 27 kg Gross weight: 259 kg Shipping volume:.82 m³ Danish VVS No.: 38594578 4/14
On request CRE 2-8 A-F-A-E-HQQE 5 Hz H [m] CRE 2-8, 3*38 V eta [%] 18 1 % 16 14 9 % 12 8 % 1 1 8 7 % 8 6 6 % 6 4 5 % 4 % 4 2 25 % 2 2 4 6 8 1 12 14 16 18 2 22 24 26 28 3 32 34 P [kw] Q [m³/h] NPSH [m] 15 P1 (motor+freq.converter) 15 P2 1 1 5 5 5/14
x13.5 465 13 1 X G 1/2 X18.1 4 G 1/2 G 1/2 38 314 176 3 215 256 35 Description Value General information: Product name: CRE 2-8 A-F-A-E-HQQE Product No: On request EAN number: On request Technical: Rated flow: 25.3 m³/h Rated head: 136.6 m Stages: 8 Impellers: 8 H [m] 18 16 14 12 1 % 9 % 8 % CRE 2-8, 3*38 V eta [%] Number of reduced-diameter impellers: Low NPSH: Pump orientation: Shaft seal arrangement: Code for shaft seal: Approvals on nameplate: Curve tolerance: Pump version: Model: Materials: Base: Impeller: N Vertical Single HQQE CE, EAC,ACS ISO996:212 3B A A Cast iron EN 1561 EN-GJL-2 ASTM A48-25B Stainless steel EN 1.431 AISI 34 A E SIC Material code: Code for rubber: Bearing: Installation: Maximum ambient temperature: 4 C Maximum operating pressure: 25 bar Max pressure at stated temp: 25 bar / 12 C 25 bar / -2 C Type of connection: DIN Size of inlet connection: DN 5 Size of outlet connection: DN 5 Pressure rating for pipe connection: PN 25 Flange rating inlet: 3 lb Flange size for motor: FF3 Connect code: F Liquid: Pumped liquid: Water Liquid temperature range: -2.. 12 C Liquid temperature during operation: 2 C Density: 998.2 kg/m³ Electrical data: Motor standard: IEC Motor type: 16MD IE Efficiency class: IE3 Rated power - P2: 15 kw Power (P2) required by pump: 15 kw Mains frequency: 5 Hz Rated voltage: 3 x 38-48 V Rated current: 3.-26. A Cos phi - power factor:.91-.86 Rated speed: 48-354 rpm Efficiency: IE3 91,9% Motor efficiency at full load: 91.9 % Number of poles: 2 Enclosure class (IEC 34-5): IP55 Insulation class (IEC 85): F Motor protec: YES Motor No: 859125 1 8 6 4 2 25 % 7 % 6 % 5 % 4 % 5 1 15 2 25 3 P [kw] 15 1 5 471 814 9 35 38 G 1/2 G 1/2 1 X G 1/2 Group 2 NC C2 NO NC C1 NO L1 L2 L3 314 13 176 3 2: Pt1 B 19: Pt1 B 18: Pt1 A 17: Pt1 A 16: GND (frame) 15: 24V 14: Sensor input2 13: GND 12: Analog output 11: Digital input 4 1: Digital input 3 1: Digital input 9: GND (frame) 8: +24V 7: Sensor input B: RS-485B Y: Screen A: RS-485A 6: GND (frame) 5: +1V 4: Setpoint input 3: GND (frame) 2: Start/stop Group 3 Group 1 4 X18.1 2 65 215 256 Q [m³/h] 1 8 6 4 2 1 5 NPSH [m] P1 (motor+freq.converter) 15 125 165 P2 4 x 13.5 6/14
Description Value Controls: Function Module: ADVANCED I/O Frequency converter: Built-in Pressure sensor: N Others: Minimum efficiency index, MEI :.7 Net weight: 27 kg Gross weight: 259 kg Shipping volume:.82 m³ Danish VVS No.: 38594578 7/14
On request CRE 2-8 A-F-A-E-HQQE 5 Hz cos phi eta CRE2-8 + 16MD 15 kw 3*38 V, 5 Hz I [A] cos phi eta.8 4.6 3 I.4 2.2 1. 1 2 3 4 5 6 7 8 9 1 11 12 13 14 n [rpm] n P2 [kw] P1 [kw] 3 3 2 2 P1 (motor+freq.converter) 1 1 n = 1 % 8/14
On request CRE 2-8 A-F-A-E-HQQE 5 Hz 35 G 1/2 G 1/2 1 X G 1/2 13 176 3 4 X18.1 65 215 256 4 x 13.5 9 814 471 2 125 165 38 314 Note! All units are in [mm] unless others are stated. Disclaimer: This simplified dimensional drawing does not show all details. 9/14
Exploded view 251a 251d 77 28 7 7a 17 31a 219 92 31a 11 9 92 51 11b 15 1 215a 215 66a 67 49 45 18 53a 53 215a 217 531a 534 531 534a 6 1/14
Sectional drawing (TM582 for TPE2,TPE3) 5 4 3 2 1 TM582 11/14
Exploded view ( TM5726 for MGE model H/I ) 251d 251b 291 29 293 287 287a 52 277a 273b 277 252a 286 273a 273 275a 266 268 268a 289a 289 251a 288b 288 288a 252b 159e 157 158 15 156c 156 151 152 172 154 185 178 156d 187 153 188 191 156c 156b 192 159d 12/14
Parts list CRE 2-8, Product No. On request Valid from 21.8.28 (834) Pos Description Annotation Données de classification Référence Quantité Unité + Motor 1 pcs - Base cpl. 1 pcs 6 Base 1 25 Drain plug 1 - Base plate cpl. 1 pcs 36 Nut Thread: M12 4 57 Base plate 1 58 Stud bolt 4 59a Flat Washer 4 - Rubber module 1 pcs 2 Spring 4 37 O-ring 2 38 O-ring Diameter: 16,3 1 Material type: EPDM Thickness: 2,4 38a O-ring Diameter: 5,3 1 Material type: EPDM Thickness: 2,4 1 O-ring Diameter: 16,3 2 Material type: EPDM Thickness: 2,4-2 Pump head cpl. 1 pcs 1 Flange 1 2 Pump head 1 7 Coupling guard 2 7a Combi Slot Torx screw 4-18 Air vent screw 1 Plug 1 Spindle 1 23 Plug 1 28 Hex head screw Length (mm): 25 4 Thread: M12 28a Hex head screw Length (mm): 45 4 Thread: M16 36 Hex nut Thread: M16 4 76 Nameplate 1 76a Rivet 1-8 Coupling 1 pcs 9 Hex socket head cap screw Designation: DIN 912 4 Length (mm): 25 Thread: M1 1 Shaft pin Diameter: 5 1 Length (mm): 26 1a Coupling half 2 26 Staybolt 4 pcs 36 Hex nut Thread: M16 4 pcs 55 Outer sleeve 1 pcs 66a Washer Designation: DIN 125 A 4 pcs Internal diameter: 17 Outer diameter: 3 Thickness: 3-8 Chamber stack 1 pcs - 4 Intermediate chamber cpl. 5 45 Neck ring cpl. 1 65 Retainer for upper seal ring 1-4 Intermediate chamber cpl. 1 Guide vane 1 Front plate 1 3 Top intermediate chamber 1 13/14
Pos Description Annotation Données de classification Référence Quantité Unité - 4a Intermediate chamber cpl. 2 Bearing plate 1 Bearing bush 1 3a Intermediate chamber 1 45 Neck ring cpl. 1 65 Retainer for upper seal ring 1 26.b Hex head screw 2 26.c Washer Designation: DIN 125A 2 Thickness: 1,6 26a Strap cpl. 2 36 Lock nut Thread: M8 1-44a Inlet part cpl. 1 45 Neck ring cpl. 1 65 Retainer for upper seal ring 1 47a Bearing ring 2-49 Impeller cpl. 8 Impeller plate 1 Impeller plate 1 Impeller blade 6 49c Wear ring 1-51 Shaft, spline, cpl. 1 Bar 62 Stop ring 1 64b Spacing bush Length (mm): 5. 1 64b Spacing bush 2 64c Spacing pipe Length (mm): 12.7 1 66 Wedge lock washer 1 69 Spacing pipe Length (mm): 43.6 5 69 Spacing pipe Internal diameter: 17,5 2 Length (mm): 17 69 Spacing bush 1 15 Shaft seal Material type: HQQE 1 pcs 14/14
Disclaimer: The information about the Grundfos pump in this document may be outdated. Data may be subject to alterations without further notice. Please contact us to verify the data above is still accurate/up-to-date. All information is copyright Grundfos. info@lenntech.com https://www.lenntech.com tel. +31 152 61 9 fax. +31 152 616 289