GRUNDFOS DATA BOOKLET NB15-4/438 A-F1-A-GQQE Grundfos pump 983626 Thank you for your interest in our products. Please contact us for more information, or visit our website https://www.lenntech.com/grundfos/nb/983626/nb-15-4-438-a-f1-a-e-gqqe.html info@lenntech.com tel. +31 152 61 9 fax. +31 152 616 289 BE > THINK > INNOVATE
Position Qty. Description 1 NB 15-4/438 A-F1-A-E-GQQE Product No.: On request Non-self-priming, single-stage, centrifugal volute pump designed according to ISO 5199 with dimensions and rated performance according to EN 733 (1 bar). Flanges are PN 1 with dimensions according to EN 192-2. The pump has an axial suction port, radial discharge port, horizontal shaft and a back pull-out design enabling removal of the motor, motor stool, cover and impeller without disturbing the pump housing or pipework. The unbalanced rubber bellows shaft seal with reduced seal face is according to DIN EN 12756. The pump is close-coupled to a fan-cooled asynchronous motor. Further product details The product's minimum efficiency index (MEI) is greater or equal to.7. This is by the Commission Regulation (EU) considered as an indicative benchmark for best-performing water pump available on the market as from 1 January 13. The back pull-out design means that the pump can be serviced by a single person without disturbing the pump housing or pipe work. Cast-iron parts 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 The pump housing has both a priming and a drain hole closed by plugs. The impeller is a closed impeller with double-curved blades with smooth surfaces. The impeller is statically balanced according to ISO 194-1 class G6.3 and hydraulically balanced to compensate for axial thrust. Wear rings used in pump housing and for impeller are made of bronze/brass or cast iron. Motor stool and pump cover are made of cast iron (EN-GJL-25). Coupling guards are fitted to the motor stool. The pump cover is provided with a manual air vent screw for venting of the pump housing and the shaft seal chamber. The shaft seal is an unbalanced rubber bellows seal with reduced seal face. Due to the bellows, the seal does not wear the shaft, and the axial movement is not prevented by deposits on the shaft. The narrow seal face makes the seal perform well in high-viscosity and anti-freezing liquids. 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. 1/11
Position Qty. Description Secondary seal material: EPDM (ethylene-propylene rubber) EPDM has excellent resistance to hot water. EPDM is not suitable for mineral oils. Motor The motor is a totally enclosed, fan-cooled motor with principal dimensions to IEC and DIN standards. Electrical tolerances comply with IEC 634. The motor efficiency is classified as IE3 in accordance with IEC 634-3-1. The motor has thermistors (PTC sensors) in the windings in accordance with DIN 4481/DIN 4482. The protection reacts to both slow- and quick-rising temperatures, e.g. constant overload and stalled conditions. Thermal switches must be connected to an external control circuit in a way which ensures that the automatic reset cannot cause accidents. The motors must be connected to a motor-protective circuit breaker according to local regulations. A variable speed drive makes adjustment of pump performance to any duty point possible. If the motor is to be connected to a variable speed drive, the pump must be ordered with an electrically insulated motor bearing. Technical data Liquid: Pumped liquid: Water Liquid temperature range: -25.. 6 C Liquid temperature during operation: C Density: 998.2 kg/m³ Technical: Rated flow: Rated head: Actual impeller diameter: Impeller nom: Primary shaft seal: Secondary shaft seal: Curve tolerance: Materials: Pump housing: Impeller: Shaft: Rubber: Wear ring mat.: 588 m³/h 63.7 m 438 mm 4 mm GQQE NONE ISO996:12 3B Cast iron EN-GJL-25 ASTM A48-4 B Cast iron EN-GJL- ASTM A48-3 B Stainless steel 1.431 34 EPDM High alloy brass(cuzn34mn3ai2 Installation: Maximum ambient temperature: 55 C Maximum operating pressure: 1 bar Flange standard: EN 192-2 Pump inlet: DN Pump outlet: DN 15 Pressure rating: PN 1 Electrical data: Motor type: IE Efficiency class: Rated power - P2: Mains frequency: Rated voltage: Rated current: SIEMENS IE3 16 kw 5 Hz 3 x 38-4D/66-725Y V 285-265/166-154 A 2/11
Position Qty. Description Starting current: 73-73 % Cos phi - power factor:.9 Rated speed: 149 rpm Efficiency: IE3 95,8% Motor efficiency at full load: 95.8-95.8 % Motor efficiency at 3/4 load: 96.1-96.1 % Motor efficiency at 1/2 load: 96.1-96.1 % Number of poles: 4 Enclosure class (IEC 34-5): 55 Dust/Jetting Insulation class (IEC 85): F Lubricant type: Grease Others: Minimum efficiency index, MEI :.7 ErP status: EuP Standalone/Prod. Net weight: 136 kg Gross weight: 145 kg Shipping volume: 2.35 m³ 3/11
On request NB 15-4/438 A-F1-A-E-GQQE 5 Hz H [m] NB 15-4/438, 3*4 V, 5Hz eta [%] 8 75 7 438 mm 65 6 55 5 45 4 35 3 25 1 8 15 6 1 4 5 5 1 15 25 3 35 4 45 5 55 6 65 7 75 P [kw] 14 1 P1 P2 Q [m³/h] 35 3 NPSH [m] 1 25 8 6 15 4 1 5 4/11
8 x 23 8 x 23 299 216 15 58 339 1 55 291 28 16 177 18 54 15 Description General information: Value Product name: NB 15-4/438 A-F1-A-E-GQQE Product No: On request EAN number: On request Technical: Rated flow: 588 m³/h Rated head: 63.7 m Actual impeller diameter: 438 mm Impeller nom: 4 mm Primary shaft seal: GQQE Secondary shaft seal: NONE Shaft diameter: 48 mm Curve tolerance: ISO996:12 3B Pump version: A Materials: Pump housing: Cast iron EN-GJL-25 ASTM A48-4 B Impeller: Cast iron EN-GJL- ASTM A48-3 B Shaft: Stainless steel 1.431 34 Material code: A Rubber: EPDM Code for rubber: E H [m] 8 75 7 65 6 55 5 45 4 35 3 25 15 1 5 438 mm NB 15-4/438, 3*4 V, 5Hz 1 3 4 5 6 7 Q [m³/h] P [kw] P1 1 1 8 6 4 P2 8 6 4 eta [%] 1 3 25 15 1 NPSH [m] Wear ring mat.: High alloy brass(cuzn34mn3ai2 Installation: Maximum ambient temperature: 55 C Maximum operating pressure: 1 bar Flange standard: EN 192-2 Pump inlet: DN Pump outlet: DN 15 Pressure rating: PN 1 Wear ring(s): neckring(s) Connect code: F1 Liquid: Pumped liquid: Water Liquid temperature range: -25.. 6 C Liquid temperature during operation: C Density: 998.2 kg/m³ Electrical data: Motor type: SIEMENS IE Efficiency class: IE3 Rated power - P2: 16 kw Mains frequency: 5 Hz Rated voltage: 3 x 38-4D/66-725Y V Rated current: 285-265/166-154 A Starting current: 73-73 % Cos phi - power factor:.9 Rated speed: 149 rpm Efficiency: IE3 95,8% Motor efficiency at full load: 95.8-95.8 % Motor efficiency at 3/4 load: 96.1-96.1 % Motor efficiency at 1/2 load: 96.1-96.1 % Number of poles: 4 Enclosure class (IEC 34-5): 55 Dust/Jetting Insulation class (IEC 85): F Motor protec: PTC Motor No: 83V15448 Mount. design. acc. IEC 34-7: IM B35 8 x 23 16 54 66 177 18 28 TO AMPLIFIER RELAY TO AMPLIFIER RELAY +T L1 299 +T +T +T L1 L2 L3 +T +T L2 L3 374 515 315 8 x 23 45 IEC TP211 THERMALLY PROTECTED WHEN THE THERMISTORS ARE CONNECTED TO AMPLIFIER RELAY FOR CONTROL OF MAIN SUPPLY 291 THERMISTORS PTC ACCORDING TO DIN 4482 15 55 15 1 339 45 315 216 58 5 58 5/11
Description Value Lubricant type: Grease Others: Minimum efficiency index, MEI :.7 ErP status: EuP Standalone/Prod. Net weight: 136 kg Gross weight: 145 kg Shipping volume: 2.35 m³ 6/11
On request NB 15-4/438 A-F1-A-E-GQQE 5 Hz 315 515 315 45 16 54 177 18 291 55 1 374 66 45 58 8 x 23 28 299 8 x 23 15 15 339 216 58 Note! All units are in [mm] unless others are stated. Disclaimer: This simplified dimensional drawing does not show all details. 7/11
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 8/11
Sectional drawing (TM58 for TPE2,TPE3) 5 4 3 2 1 TM58 9/11
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 1/11
Parts list NB 15-4/438, Product No. On request Valid from 1.3.1 (19) Pos Description Annotation Données de classification Référence Quantité Unité + Motor 1 pcs - Nut 1 pcs 66 Washer 1 66a Spring lock washer 1 67 Nut Thread: M27 1 Sticker 1 pcs - Motor stool cpl. 1 pcs 1a Motor stool 1 7 Coupling guard 2 77a Pan head screw 4 - Pump housing cpl. 1 pcs 6 Pump housing 1 36 Hex nut Thread: M16 16 - Shaft cpl. 1 pcs 1 Socket set screw Length (mm): 1 3 Thread: M8 11 Key 2 51 Stub shaft 1 49 Impeller 1 pcs 72a O-ring Diameter: 66 1 pcs Material type: RUBBER Thickness: 3,53-77 Cover 1 pcs 36 Hex nut Thread: M16 14 77 Cover 1 15 Shaft seal Material type: QQEGG 1 pcs 11/11
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