GRUNDFOS DATA BOOKLET. Fire NKF. Grundfos fire systems. Fire systems with electrically powered (50 Hz) pumps approved by VdS

Transcription

1 GRUNDFOS DATA BOOKLET Grundfos fire systems Fire systems with electrically powered (50 Hz) pumps approved by VdS

2 Contents VdS standard Introduction to VdS 3 VdS standards 3 Standards approval process 3 Certificate 4 Overview of fire system 8 Fire pumps 9 Duty range 9 Motor power rating 11 Specifications 11 Electrical motors 12 Jockey pumps 12 Controller 12 Commissioning 12 Product description Introduction 13 NKF pump features 13 Performance range NKF, 2- and 4-pole 14 Product range Product numbers 15 VdS approval numbers 15 Identification Type key 16 Shaft seals 16 Nameplate 16 Construction Sectional drawing, NKF, model B 17 Material specification 17 Sectional drawing, NKF, model A 18 Material specification 18 Mechanical construction 19 Surface treatment Test pressure Motor Operating conditions Pump unit location 21 Ambient temperature and altitude 21 Duty range of shaft seal 21 Inlet pressure 21 Maximum inlet pressure 21 Minimum inlet pressure 21 Installation and operation Piping 22 Alignment 22 Motor data Motor range, 2-pole 23 Motor range, 4-pole 23 Bare shaft pumps NKF, model B 24 NKF, model A 25 Flange dimensions 26 Curve charts How to read the curve charts 27 Curve conditions 28 Selection of pumps 28 Calculation of total head 28 Performance tests 28 VdS certificate 28 Performance curves NKF 50-0, 2-pole 29 NKF 65-0, 2-pole 30 NKF 80-0, 2-pole 31 NKF , 2-pole 32 NKF , 4-pole 33 NKF , 4-pole 34 NKF 0-500, 4-pole 35 Technical data Installation dimensions 36 Controller General description 48 Controller versions 48 Identification 48 Construction 49 Control panel 49 Potential-free signalling contact 50 Cables 50 Optional equipment 50 Controller components 50 Operating conditions 51 Installation 51 General information 51 Electrical connection 51 Motor connection 51 Operation 52 Fire pump 52 Jockey pump 52 Compressor 52 Pressure-maintaining pump 52 Level indication 52 Motor valve 52 Technical data 52 Optional equipment 52 Product numbers 53 Options 53 Cabinet dimensions 53 2

3 VdS standard Introduction to VdS VdS Schadenverhütung GmbH is an independent, international, accredited and notified testing and certification institution for fire prevention and safety technology as well as for physical and electronic protection against intrusion. ("Schadenverhütung" is the German word for "loss prevention".) Accredited according to the EN series of European standards, VdS Schadenverhütung is a member of the European Fire and Security Group (EFSG). VdS experts are represented in all relevant German and international committees. The concept behind VdS recognition is to ensure tested and certified quality in the products and services offered in the safety and security markets. This is equally advantageous for user and supplier. For further information on VdS, see VdS standards The products in this data booklet have been built to comply with VdS standards on water-based fire fighting systems, described in the following documents: VDS CEA 4001:05-09 (02): Planning and installation. VDS 2100: Guidelines for water-based fire fighting systems. VDS 2344: Procedures for testing and approval of equipment, components and systems used in fire protection and security control. Standards approval process Grundfos is to test the pumps and fill in the application forms for each individual pump size. The following documentation should to submitted to the VdS: complete drawings with list of parts and materials of the major components a statement regarding quality and production (ISO Annex A & D) a complete data sheet with technical information complete installation and operating instructions. If the application forms are accepted, VdS will attend the final test at the Grundfos premises. If the evaluation of the test results is positive, VdS will issue a certificate on the approval of the pump. 3

4 VdS standard Certificate Example of VdS certificate of approval Updated certificate is pending. VdS_certif_1 4

5 VdS standard VdS_certif_2 5

6 VdS standard VdS_certif_3 6

7 VdS standard VdS_certif_4 7

8 VdS standard Overview of fire system )( 10 A A 9 x x x x x x a 6 5a 2 Fig. 1 Overview of fire system Pos. Description Pos. Description Pos. Description 1 Fire pump, electrically powered 5a Overflow 11 Overpressure backflow string 1a Fire pump, diesel powered 6 Pressure tank 12 Fire hydrant 2 Jockey pump 7 Fire pump priming tank 13 Wet sprinkler system 3 Compressor 8 Water supply 14 Dry sprinkler system 4 Controller 9 Alarm valve 5 Intermediate water tank 10 Test-running string/bleed line TM Fire system design A fire system typically consists of three pumps: one pressure pump (jockey pump) and two fire pumps, one duty and the other acting as standby. Each of the fire pumps is capable of achieving the required performance. Systems with only one fire pump or more than two fire pumps are, however, also seen. Function The duty and standby pumps are not powered by the same source. Either both pumps are electrically powered, supplied by two separate sources, or one pump is electrically powered and the other dieselpowered. This ensures that if one pump fails, for example due to fire damage, the other will operate. The pumps are pressure-controlled by pressure sensors. The pressure in the system is normally maintained by the pressure tank. If the system pressure drops, the water level and air pressure in the tank will decrease. The jockey pump starts to fill the tank, and the compressor to boost the pressure. If the jockey pump and the compressor succeed in boosting the water level and the pressure to a set value, both will stop. If a sprinkler has been activated and the water level and the pressure keeps falling, the duty pump will start. A further decrease in the pressure means that the duty pump is not running, and the standby pump will start. The same principle applies to the dry sprinkler system in which an air compressor maintains pressure from the alarm valve and through the sprinkler system. Although individually designed for the specific installation, each fire system must comply with VdS standards. Important! Requirements as to design, sizing and testing of fire protection systems vary from one country to another. 8

9 VdS standard Fire pumps Grundfos end-suction pumps approved by VdS are designed for the distribution of water in stationary sprinkler systems using either foam or water spray. They are operated in case of fire and during tests. Materials Requirements of materials for VdS-approved pumps: impeller and wear rings made of bronze wet parts such as shaft, washers and nuts made of stainless steel castings made of EN-GJL-250. VdS requirements for EN-GJL-250 do not allow heads (H) above 110 metres and flows (Q) above 600 m 3 /h. Pump characteristic VdS focuses strongly on the instabilities, due to sprinkler systems consisting of long and different pipe circuits. Two instable pumps may cause vibrations or breakdown. If the pump characteristic is instable, it is not allowed to exceed 5 %. See examples of instable (fig. 2) and stable (fig. 3) pump characteristics below. H [m] ø334 ø3 68 % 70 % 72 % 74 % 74.8 % NK Hz, n = 1450 min -1 ISO 9906 Annex A H [m] ø530 ø512 ø471 ø kw 0 kw 160 kw 132 kw Fig. 3 Stable pump characteristics Duty range VdS operates with a concept known as Q zul (zulässig = permissible), see fig 4. The duty point of the pump must not be to the right of this limit. Q zul is defined on the basis of the pump NPSH curves. The following calculation must be made for the largest and smallest pump impeller diameter. Find the flow at 4.5 m and 5.5 m NPSH NKF Hz ISO 9906 Annex A Q [m³/h] Q [l/min] TM ø % 74 % 72 % Multiply the value Q 4.5 m NPSH by ø290 ø % 72.5 % 70 % 68 % Does the result exceed the value of Q 5.5 m NPSH? Yes Q zul = Q 5.5 m NPSH / % No Q [m³/h] Fig. 2 Instable pump characteristics TM Q zul = Q 4.5 m NPSH 9

10 VdS standard H [m] ø219 NKF Hz ISO 9906 Annex A ø7 22 kw 52 ø194 18,5 kw Q zul kw 40 ø kw Q [m³/h] P2 [kw] Q [l/min] ø194 ø7 ø219 NPSH [m] ø ø219 (Max. NPSH) ø170 (Min. NPSH) Q [m³/h] TM Fig. 4 Indication of calculation of Q zul 10

11 VdS standard Example The following example shows how Q zul has been shown for the pump characteristics in fig. 4. Q zul for 219 impeller: Q 4.5 m NPSH = 110 m 3 /h Q 5.5 m NPSH = 119 m 3 /h Specifications Each curve chart is followed by a specification of technical data. See table below. Grundfos A/S Manufacturer: Poul Due Jensens Vej 7A DK-8850 Bjerringbro Fire pump model/size: NKF 50-0 VdS approval No: P Q 4.5 m NPSH x x 1.2 = 132 Does the result exceed the value of Q 5.5 m NPSH? 132 > 119 The maximum permissible flow of an NKF 50-0 pump with 219 impeller is 99 m 3 /h. Q zul for 170 impeller: Q 4.5 m NPSH = 93 m 3 /h Q 5.5 m NPSH = 93 m 3 /h Q 4.5 m NPSH x x 1.2 = 112 Does the result exceed the value of Q 5,5 m NPSH? 112 > 93 Yes Q zul = Q 5.5 m NPSH / 1.2 Q zul ø219 = 119 / 1.2 = 99 m 3 /h Yes Q zul = Q 5.5 m NPSH / 1.2 Q zul 170 = 93 / 1.2 = 78 m 3 /h The maximum permissible flow of an NKF 50-0 pump with 170 impeller is 78 m 3 /h. On the basis of Q zul 219 and Q zul 170, the limit Q zul can be drawn and the duty range of the impellers in between can be read. Motor power rating To ensure that the motor is capable of operating the pump at any time, so that it can deliver water, VdS requires an excess capacity of motor power. Test day: Drawn by: XXXXX XXXXXX Date: The curve is traced for: D2 normal: 219 D2 turned down: 170/194/7 b2: 14.2/12.5/12/11.6 Dn S : 65 Dn D : 50 Emergency reserve displacement volume: VdS Approval No Each pump has its own VdS approval number. D2 normal l/min, 1.96 m 3 /h 2 % of Q zul Minimum coverage in metres: 30.5 The locked rotor torque traced at maximum power load: Max. 0.5 Nm D2 indicates the largest impeller diameter of the specific pump. D2 turned down D2 turned down indicates the reduced diameters of the impellers, approved for each model. b2 The impeller is of the closed type. The b2 dimension indicates the width of the opening where water leaves the impeller. According to VdS, the motor power is found at 16 m NPSH. The example below is based on Q zul = 99 m 3 /h as previously calculated. P2 [kw] P2 required P2 necessary ø7 ø194 ø219 NPSH [m] ø ø219 4 ø170 (Min. NPSH) (Max. NPSH) Q [m³/h] Fig. 5 Necessary and required power TM Fig. 6 b2 impeller dimension TM When the impeller diameter is reduced, the b2 dimension is increased. 11

12 VdS standard Dn S The diameter of the internal flange on the suction side. Dn D The diameter of the internal flange on the discharge side. Emergency reserve displacement volume If the pump runs against a closed valve, the emergency reserve displacement volume indicates the minimum flow to be led away from the pump to prevent breakdown within 48 hours. This flow must be led out of the pump bleed line. Minimum coverage in m Indicates the minimum head for which the pump is approved. Locked rotor torque traced at maximum power load Indicates the break-away torque of the pump. Electrical motors Grundfos electrical fire systems are equipped with MMG-E motors (sourced HEM EFF2 motors) produced according to IEC Insulation class: F. Enclosure class: IP55. Jockey pumps Grundfos CR pumps are used as jockey pumps, maintaining the water level in the pressure tank. Under normal conditions, the jockey pump is activated by the low-level switch in the pressure tank as a result of small leakages in the pipe systems filled with water. The jockey pump operates until it is deactivated by the highlevel switch. The jockey pump can also be activated in case one or more sprinklers are open, in order to maintain the water level in the pressure tank. There are no specific VdS requirements as regards the jockey pump. Commissioning The installer should commission the complete fire unit before handing it over to the plant manager on site. Many potential issues of the complete fire system must be tested before commissioning to ensure a satisfactory system performance and identify any damage during installation. Key components should be checked according to the descriptions in the respective installation and operating instructions. In addition, VdS stipulates that fire system tests should be carried out, for example: pressure test of sprinkler circuits values of all measuring devices (air pressure, water level, etc.) to the system water flow to fire pumps test of alarm system and interface to municipal fire department. The installer should supply the plant manager with the following documents: Installation certificate, stating that the fire system has been installed according to VdS requirements A complete set of installation and operating instructions and system drawings with specification of all components for the plant manager and the owner of the system. Controller The controller for the electrical fire pump complies with the CEA 4001 standard. The Grundfos electrical fire system is equipped with VDS-approved controller, sourced externally. The controller has these features: optional phase monitoring colour red (RAL 3000) compliance with IP 54. The controller can be mounted on the wall or fitted with stands to the base frame of the electrical fire fighting unit. 12

13 Product description Introduction Grundfos pump units are typically used in fire fighting applications for supplying water to fire hose reels, fire hydrants or sprinkler systems. This data booklet covers the range of electrically powered NKF end-suction pumps, designed and VdSapproved for use in fire systems. Pump designations is an NKF end-suction pump with coupling and motor mounted on a common base frame. The unit can be incorporated in a fire system. NKF is the pump alone. Pump range NKF pumps are available in these models: Model A: NKF Model B: NKF 50-0 NKF 65-0 NKF 80-0 NKF NKF NKF Scope of delivery A complete unit assembled and supplied from factory normally comprises these elements: a pump and motor mounted on a common base plate/frame a standard coupling protected by a coupling guard plugs and screws in stainless steel. pumps can be ordered with or without VdSapproved controller. NKF pump features NKF pumps are non-self-priming, single-stage, centrifugal, volute pumps. The pumps have these features: axial suction port, radial discharge port and horizontal shaft components cast iron pump housing, bronze impeller, carbon steel shaft, bronze shaft sleeves and wear rings dimensions and rated performance according to DIN and ISO 2858 dynamically and hydraulically balanced rotating parts according to ISO 1940, class 6.3; hydraulically balanced impellers two sturdy, antifriction, oil-lubricated bearings shaft seal. Fig. 7 end-suction pump and motor mounted on a base frame (basic version) GrA

14 Performance range NKF, 2- and 4-pole H [m] 1 NKF 50 Hz / / / /2 65-0/2 80-0/ / Q [m³/h] TM

15 Product range Product numbers The product numbers are reference numbers for the pump unit version. All pump units receive a unique product number specified according to the order. As standard, all pumps are with standard coupling. Fire pumps with spacer coupling are available on demand. Pump unit Motor power P 2 [kw] Basic unit Compact unit Flex unit * *) Two different impeller diameters for the same motor size, see page 30. VdS approval numbers Pump VdS Approval No NKF 50-0 P NKF 65-0 P NKF 80-0 P NKF P NKF P NKF P NKF P The standard range has been composed on the basis of the following parameters: Pump housings have discharge flanges from DN to DN 50. Impellers are made of bronze. Neck rings are made of bronze. The pump units are available in the following versions: Basic unit: Pump and motor mounted on base frame. Compact unit: Pump, motor and controller * mounted on base frame. Flex unit: Pump and motor mounted on base frame, and controller * for wall mounting. As standard, the flex unit is delivered with a 5 m cable between pump and controller. Other lengths are available on demand. *) The controller is without monitoring module and controller options. See section Controller, page

16 Identification Type key Fire system Example Fire NK F /142 E -F -X -D -B -A -B Fire: Fire system Pump type NK F: Pump approved for fire fighting Nominal diameter of discharge port (DN) [mm] Pump housing size [mm] Actual impeller diameter [mm] Driver E: Electric motor, 50 Hz Approval of pump F: VdS Approval of unit X: No approval Pipe connection D: DIN Controller B: For mounting on base frame W: For wall mounting X: No controller Shaft seal A: BAQE Coupling A: Standard B: Spacer Shaft seals NKF pumps are supplied with BAQE shaft seals. Codes for shaft seals Positions (1) to (4) cover four pieces of information about the shaft seal: Nameplate The nameplate shows a with a rated flow of 150 m 3 /h at 2940 min -1. To deliver a rated head of 112 metres, the actual impeller diameter is 270 mm. See fig. 8. Example (1) (2) (3) (4) Grundfos type designation Material, rotating seal face Material, stationary seat Material, secondary seal and other rubber and composite parts, except the neck ring The following table gives a short description of positions (1), (2), (3) and (4). Pos. Type Short description of seal (1) B Rubber bellows seal Pos. Type Material Synthetic carbons: (2) and (3) A Q Pos. Type Material (4) E EPDM Carbon, metal-impregnated (antimony (not approved for potable water)) Silicon carbide Type: part No. serial No /270-E-F-X-D-B-A-B Main Supply: impeller diameter: 3X400V 50Hz 270 Q: 150 m /h H: 112 m P2: 55 kw n: min IP 55 G: 346 kg Made in Germany P VdS pump VdS-approved Fig. 8 Example of nameplate TM 16

17 Construction Sectional drawing, NKF, model B f 67 66a 66 11a 72a f TM Fig. 9 Sectional drawing, NKF 50-0, 65-0, 80-0, Material specification Pos. Component Material specification 6 Pump housing EN-GJL a Key Stainless steel DIN W.-Nr /AISI 304 Plug (drain, priming) DIN W.-Nr Impeller G-CuSn5Zn5Pb5 51 Shaft Stainless steel DIN W.-Nr /AISI 4 53 Ball bearing SKF - FAG - NSK 54 Ball bearing SKF - FAG - NSK 66 Washer Stainless steel DIN W.-Nr /AISI a Spring washer Stainless steel Nut Stainless steel DIN W.-Nr /AISI a O-ring O-ring, EPDM or FKM 77 Cover EN-GJL Bearing bracket EN-GJL Mechanical shaft seal Burgmann mechanical seals 159f Retaining ring 17

18 Construction Sectional drawing, NKF, model A TM Fig. 10 Sectional drawing, NKF Material specification Pos. Component Material specification Pos. Component Material specification 1111 Pump housing 3110 Bearing housing EN-GJL-250 EN-GJL Seal box 31 Ball bearing 1510 Wear ring 3121 Ball bearing SKF - FAG - RHP - NSK G-CuPb10Sn 15 Wear ring 3131 Ball bearing 1850 Impeller counter nut 02 Spacer ring Stainless steel DIN W.-Nr /AISI 304 Stainless steel DIN W.-Nr /AISI 4 40 Rotary seal ring Burgmann mechanical seals 41 Stationary seat 2110 Shaft Stainless steel DIN W.-Nr /AISI 4 20 Impeller G-CuSn5Zn5Pb Gasket for cover 4213 Cover for seal EN-GJL Shaft sleeve Stainless steel DIN W.-Nr /AISI Gasket for pump 2540 Thrower 6511 Priming plug 2542 Thrower 6515 Drain plug 2911 Impeller washer Stainless steel DIN W.-Nr /AISI Pressure tapping plug Asbestos free gaskets DIN FA 3535 and FKM Asbestos free gaskets DIN FA 3535 and FKM DIN W.-Nr Impeller nut 6710 Impeller key DIN W.-Nr Stainless steel 2915 Lock nut DIN W.-Nr /AISI

19 Construction Mechanical construction Pump housing The cast iron volute pump housing has axial suction port and radial discharge port. Flange dimensions are according to EN The pump housings have both a priming and a drain hole closed by plugs. Shaft seal The shaft seal is an unbalanced, mechanical shaft seal with dimensions to EN Seal faces are available in a variety of combinations. The code of the standard version is BAQE, see page 16. The drawings below illustrate shaft seals for NKF, model A. Fig. 11 NKF pump housing TM Fig. 13 Rubber bellows seal type BAQE counteracts deposits from the pumped water TM Bearing bracket and shaft The bearing bracket has two sturdy, antifriction, lubricated-for-life bearings. However, oversize pumps with 55 mm shaft diameter have open bearings with lubricating nipples. Coupling NKF pumps are available with two types of coupling: standard spacer. The bearing bracket is made of cast iron, EN-GJL-250. The shaft is made of stainless steel, DIN W.-Nr / AISI 4. Shaft diameter d5 is either 24, 32 or 55. A thrower on the shaft prevents water from entering the bearing bracket. TM Fig. 14 Standard coupling Fig. 12 Bearing bracket and shaft All NKF pumps are fitted with one of four shaft, shaft seal and bearing sizes. TM Fig. 15 Spacer coupling Pumps fitted with a spacer coupling can be serviced without dismantling the motor from the base frame and without removing the pump housing from the pipework. This saves realignment of pump and motor after service. TM

20 Construction Impeller The closed impeller is made of bronze and has doublecurved blades with smooth surfaces for high efficiency. Fig. 16 Impeller for an NKF pump All impellers are dynamically and hydraulically balanced. The hydraulical balancing compensates for axial thrust. The direction of rotation of the impeller is clockwise when viewed from the motor. All impellers are adapted to the duty point required by the customer. Base frame Pump and motor are mounted on a common, steel base frame. Fig. 17 Schematic view of NKF pump-motor unit mounted on a base frame Surface treatment NKF, model B The cast iron parts of NKF pumps are electrocoated. TM TM NKF, model A All stationary cast iron parts are dip-painted with waterbased, ether-epoxy, no-lead paint (NCS 9000/ RAL 9005). The thickness of the film is 25 μm ± 5 μm. The product is also spray-painted with black waterbased, ether-epoxy, no-lead paint and finally with red two-component paint, Ral The thickness of the dry coating is 35 μm ± 5 μm. Test pressure Pressure testing has been made with + C water containing corrosion inhibitor. Pressure Operating pressure Test pressure stage bar MPa bar MPa PN PN Motor The motor is a totally enclosed, fan-cooled, standard motor with main dimensions according to IEC and DIN standards. The tables below show the motors available for NKF. Standard motor range Output P 2 [kw] Standard range 2-pole MMG model E Grey squares = These motors are not in use. 4-pole MMG model E The electrocoating process includes: 1. Alkaline cleaning. 2. Pre-treatment with zinc phosphate coating. 3. Cathodic electrocoating (epoxy). 4. Curing of paint film at C. The colour code is NCS 9000/RAL Final spray-painting with red two-component paint, RAL 3000.

21 Operating conditions Pump unit location The pump is designed for installation in a nonaggressive and non-explosive atmosphere. The relative air humidity must not exceed 95 %. Ambient temperature and altitude The ambient temperature must not exceed +40 C. If the ambient temperature exceeds +40 C or if the motor is installed more than 1000 metres above sea level, the rated motor output will fall due to the low density and consequently low cooling effect of the air. In such cases, it may be necessary to use an oversize motor with a higher output. See fig. 18. P2 [%] t [ C] m Fig. 18 The motor P 2 depends on temperature/altitude TM Inlet pressure Maximum inlet pressure The inlet pressure is limited by the maximum operating pressure. The maximum inlet pressure appears from this table: Inlet pressure Minimum inlet pressure The minimum inlet pressure must be according to the NPSH curve + a safety margin of at least 1 metre + correction for vapour pressure, according to VdS CEA 4001 : (02). See fig. 19. Max. 9 bar. Max. 7 bar for impellers of 400 mm and up. Fig. 19 Schematic view of open system with NKF pump TM Duty range of shaft seal The NKF pump is equipped with a BAQE shaft seal, i.e. a rubber bellows seal with metal-impregnated carbon/ silicon carbide seal faces and EPDM rubber parts. Temperature range: 0 C to +1 C. 21

22 Installation and operation Piping When installing the pipes, make sure that the pump housing is not stressed by the pipework. The suction and discharge pipes must be of an adequate size, taking the pump inlet pressure into account. Install the pipes so that air locks are avoided, especially on the suction side of the pump. see fig.. TM Alignment In a complete pump unit assembled and supplied from factory, the coupling halves have been accurately aligned. Alignment is made by inserting shims under the pump and motor mounting surfaces as required. The pump/motor alignment may be affected during transport. Always check alignment after the pump has been installed. If misalignment has occurred due to radial or angular shifting, realign by inserting/removing shims under the feet of the pump or the motor. Take care to align carefully as this will increase the working lives of the coupling, bearings and shaft seals considerably. Note: Check the final alignment when the pump has obtained its operating temperature under normal operating conditions. Fig. Pipe sections Fit isolating valves on either side of the pump to avoid having to drain the system if the pump needs to be cleaned or repaired. Make sure the pipes are adequately supported as close to the pump as possible, both on the suction and the discharge side. The counter flanges should lie true against the pump flanges without being stressed; otherwise, the pump will be damaged. TM Fig. 21 Example of piping, 22

23 Motor data The tables below show technical data on 2- and 4-pole motors for NKF pumps. GR7350 Fig. 22 MMG motor, model E Motor range, 2-pole Frame size Voltage P2 I 1/1 η n I Weight Cos ϕ 1/1 [kw] [A] [%] [min -1 ] Start I [kg] 1 1 MMG 160 MA-E / MMG 160 MB-E / MMG 160 L-E / MMG 180 M-E / MMG 0 LA-E 3 x Δ/ / MMG 0 LB-E Y / MMG 225 M-E / MMG 250 M-E / MMG 280 S-E / MMG 280 M-E / Motor range, 4-pole Frame size Voltage P2 I 1/1 η n I Weight Cos ϕ 1/1 [kw] [A] [%] [min -1 ] Start I [kg] 1 1 MMG 225 M-E / MMG 250 M-E / MMG 280 S-E / MMG 280 M-E / MMG 315 S-E 3 x Δ/ Y / MMG 315 M-E / MMG 315 LA-E / MMG 315 LB-E 0 340/ MMG 355 M-E /

24 Bare shaft pumps NKF, model B a f l x DNd M n t DNs d5 w s2 n3 n2 n1 c h1 h2 m2 m1 s1 b M TM E M Drain plug Pressure gauge connection Type Pump [mm] Supporting feet [mm] Shaft [mm] Pump moments DNs DNd a f h1 h2 M, E b m1 m2 n1 n2 w S1 S2 c d5 l x t n of inertia [kgm 2 ] NKF /8" M12 M NKF /8" M12 M NKF M /8" 340 M NKF M NKF M /2" M 110 NKF M Weight [kg] 24

25 Bare shaft pumps NKF, model A a f x DNd l h2 A G 1/2 M G 1/4 n d5 t V G 1/4 m2 m1 w s2 h1 c s1 b // // n2 n1 E G 1/4 DNs G 3/8 TM A E M V Priming plug Drain plug Pressure gauge connection Pressure/vacuum gauge connection Type Pump [mm] Supporting feet [mm] Shaft [mm] Pump moments DNs DNd a f h1 h2 b c m1 m2 n1 n2 s1 s2 w d5 l t n x of inertia [kgm 2 ] NKF Weight [kg] 25

26 Bare shaft pumps Oversize pumps EN 733 describes only the standard types. The NKF range includes bigger models (oversize pumps) for higher flow rates and heads. As oversize pumps are not according to the standard, dimensions of Grundfos NKF oversize pumps may differ from the dimensions of similar pumps from other suppliers. Flange dimensions The flange dimensions are in mm. D 1 D 2 D 3 S TM EN PN 10/16 EN PN 10 Nominal diameter (DN) D D D S 4 x 19 4 x 19 8 x 19 8 x 19 8 x 23 8 x x 23 26

27 Curve charts How to read the curve charts Size of impeller QH curve for the individual pump Q zul indicates the limit of the individual pump performance range according to VdS Total pump head H= H total H [m] ø222 ø kw NKF pole, 50 Hz ISO 9906 Annex A Pump type and frequency of motor kw ø kw 50 ø kw Q [m³/h] P2 [kw] Q [l/min] The power curve indicates pump input power [P 2 ] 50 ø213 ø222 NPSH [m] 40 ø2 30 ø ø188 (Min. NPSH) ø222 (Max. NPSH) Q [m³/h] 0 The NPSH curves are according to the minimum and maximum impeller diameter TM

28 Curve charts Curve conditions Selection of pumps The guidelines below apply to the curves shown in the performance charts, pages 29 to 35. Tolerances according to ISO 9906, Annex A and VdS The curves show pump performance with different impeller diameters at the nominal speed. The bold part of the curves shows the recommended operating range. The thin parts are not allowed according to VdS. Do not use the pumps at minimum flows below 0.1 x Q at optimum efficiency because of the danger of overheating of the pump. The curves apply to the pumping of water at a temperature of + C and a kinematic viscosity of 1mm 2 /s (1 cst). NPSH: The curves are according to the minimum and maximum impeller diameter. In case of other densities than 1000 kg/m 3 the discharge pressure is proportional to the density. When pumping water with a density higher than 1000 kg/m 3, motors with correspondingly higher outputs must be used. Performance tests The requested duty point for every pump is tested according to ISO 9906, Annex A, and VdS If the customer requires a specific impeller diameter (not a specific duty point), the pump will be tested at a duty point which is 2/3 of the maximum flow of the published performance curve related to the ordered impeller diameter (according to ISO 9906, Annex A). If the customer requires either more points on the curve to be checked or certain minimum performances or certificates, individual measurements must be made. VdS certificate The pump order includes a test certificate confirming the required QH performance. Calculation of total head The total pump head consists of the height difference between the measuring points + the differential head + the dynamic head. H = H + H + H total geo stat dyn H geo : H stat : H dyn : Height difference between measuring points. Differential head between the suction and the discharge side of the pump. Calculated values based on the velocity of the pumped water on the suction and the discharge side of the pump. 28

29 Performance curves NKF pole NKF 50-0, 2-pole H [m] ø219 NKF pole, 50 Hz ISO 9906 Annex A ø7 22 kw ø194 18,5 kw ø kw kw Q [m³/h] P2 [kw] Q [l/min] ø194 ø7 ø219 NPSH [m] ø ø170 (Min. NPSH) ø219 (Max. NPSH) Q [m³/h] 4 0 TM Circulation flow 2 % of rated flow. NKF 50-0 > kw 2950 rpm > kw 2940 rpm > kw 2940 rpm = kw 2930 rpm 29

30 Performance curves NKF pole NKF 65-0, 2-pole H [m] ø219 ø kw NKF pole, 50 Hz ISO 9906 Annex A kw 52 ø ø kw 44 18,5 kw 40 ø kw Q [m³/h] P2 [kw] Q [l/min] ø219 ø215 NPSH [m] 25 ø195 ø ø ø219 (Max. NPSH) ø170 (Min. NPSH) Q [m³/h] 4 0 TM Circulation flow 2 % of rated flow. NKF 65-0 > kw 2960 rpm > kw 2960 rpm > kw 2950 rpm > kw 2940 rpm = kw 2940 rpm 30

31 Performance curves NKF pole NKF 80-0, 2-pole H [m] NKF ø222 2-pole, 50 Hz ISO 9906 Annex A 65 ø kw kw ø kw 50 ø kw Q [m³/h] P2 [kw] Q [l/min] 50 ø213 ø222 NPSH [m] 40 ø2 30 ø ø188 (Min. NPSH) ø222 (Max. NPSH) Q [m³/h] 5 0 TM Circulation flow 2 % of rated flow. NKF 80-0 > kw 2960 rpm > kw 2980 rpm > kw 2960 rpm = kw 2960 rpm 31

32 Performance curves NKF pole NKF , 2-pole H [m] 110 ø270 NKF pole, 50 Hz ISO 9906 Annex A ø kw 80 ø kw 70 ø kw kw Q [m³/h] P2 [kw] Q [l/min] 100 ø270 NPSH [m] 80 ø ø ø ø270 (Max. NPSH) 0 ø216 (Min. NPSH) Q [m³/h] 5 0 TM Circulation flow 2 % of rated flow. NKF > kw 2980 rpm > kw 2970 rpm > kw 2960 rpm = kw 2980 rpm 32

33 Performance curves NKF pole NKF , 4-pole H [m] ø kw NKF pole, 50 Hz ISO 9906 Annex A 55 ø ø kw kw 40 ø ø kw kw Q [m³/h] P2 [kw] Q [l/min] ø389 ø410 NPSH [m] ø ø ø ø318 (Min. NPSH) ø410 (Max. NPSH) Q [m³/h] 5 0 TM Circulation flow 2 % of rated flow. NKF > kw 1490 rpm > kw 1480 rpm > kw 1480 rpm > kw 1480 rpm > kw 1480 rpm 33

34 Performance curves NKF pole NKF , 4-pole H [m] 1 NKF pole, 50 Hz ISO 9906 Annex A 110 / / kw 90 0 kw / kw 70 /441 / kw kw Q [m³/h] P2 [kw] Q [l/min] /518 / /476 1 /415 /441 NPSH [m] 80 /415 (Min. NPSH) /538 (Max. NPSH) Q [m³/h] 10 0 TM Circulation flow 2 % of rated flow. NKF > kw 1490 rpm > kw 1480 rpm > kw 1480 rpm > kw 1480 rpm > kw 1480 rpm 34

35 Performance curves NKF pole NKF 0-500, 4-pole H [m] NKF ø530 ø kw 4-pole, 50 Hz ISO 9906 Annex A 90 0 kw ø ø kw kw Q [m³/h] P2 [kw] Q [l/min] ø530 ø512 NPSH [m] ø ø ø446 (Min. NPSH) ø530 (Max. NPSH) Q [m³/h] 5 0 TM Circulation flow 2 % of rated flow. NKF0-500 > kw 1490 rpm > kw 1490 rpm > kw 1490 rpm = kw 1490 rpm 35

36 Technical data pole Installation dimensions 50-0, basic unit TM With MMG-E motor, 2-pole 50-0 kw Motor range MMG160MA-E MMG160MB-E MMG160ML-E MMG180M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] d [mm] Net weight [kg]

37 Technical data pole 50-0, compact unit TM With MMG-E motor, 2-pole 50-0 kw Motor range MMG160MA-E MMG160MB-E MMG160ML-E MMG180M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] h 4 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] b 4 [mm] d [mm] Net weight [kg]

38 Technical data pole Installation dimensions 65-0, basic unit TM With MMG-E motor, 2-pole 65-0 kw Motor range MMG160MB-E MMG160L-E MMG180M-E MMG0LA-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] d [mm] Net weight [kg]

39 Technical data pole 65-0, compact unit TM With MMG-E motor, 2-pole 65-0 kw Motor range MMG160MB-E MMG160L-E MMG180M-E MMG0LA-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] h 4 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] b 4 [mm] d [mm] Net weight [kg]

40 Technical data pole Installation dimensions 80-0, basic unit TM With MMG-E motor, 2-pole 80-0 kw Motor range MMG0LA-E MMG0LB-E MMG225M-E MMG250M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] d [mm] Net weight [kg]

41 Technical data pole 80-0, compact unit TM With MMG-E motor, 2-pole 80-0 kw Motor range MMG0LA-E MMG0LB-E MMG225M-E MMG250M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] h 4 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] b 4 [mm] d [mm] Net weight [kg]

42 Technical data pole Installation dimensions , basic unit TM With MMG-E motor, 2-pole kw Motor range MMG225M-E MMG250M-E MMG280S-E MMG280M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] d [mm] Net weight [kg]

43 Technical data pole , compact unit TM With MMG-E motor, 2-pole kw Motor range MMG225M-E MMG250M-E MMG280S-E MMG280M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] a 3 [mm] h [mm] h 2 [mm] h 3 [mm] h 4 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] b 4 [mm] d [mm] Net weight [kg]

44 Technical data pole Installation dimensions , basic unit TM With MMG-E motor, 4-pole kw Motor range MMG225M-E MMG250M-E MMG280S-E MMG280M-E MMG315S-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] h [mm] h 2 [mm] h 3 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] d [mm] Net weight [kg]

45 Technical data pole , compact unit TM With MMG-E motor, 2-pole kw Motor range MMG225M-E MMG250M-E MMG280S-E MMG280M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] h [mm] h 2 [mm] h 3 [mm] h 4 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] b 4 [mm] d [mm] Net weight [kg]

46 Technical data pole Installation dimensions , basic unit TM With MMG-E motor, 4-pole kw Motor range MMG315S-E MMG315M-E MMG315LA-E MMG315LB-E MMG355M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] h [mm] h 2 [mm] h 3 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] d [mm] Net weight [kg]

47 Technical data pole Installation dimensions 0-500, basic unit TM With MMG-E motor, 4-pole kw Motor range MMG225M-E MMG250M-E MMG280S-E MMG280M-E PN [bar] DNd [mm] DNs [mm] a [mm] a 1 [mm] a 2 [mm] h [mm] h 2 [mm] h 3 [mm] L [mm] L 1 [mm] L 2 [mm] b 2 [mm] b 3 [mm] d [mm] Net weight [kg]

48 Controller General description The Grundfos CONTROL FS 1 fire system controller is a complete, factory-assembled controller in a steel plate cabinet, suitable for wall mounting or freestanding. The controller has been designed without main switches to comply with the regulations of the VdS (Loss Prevention Authority). If a fire pump can be powered by more than one electricity supply network, a controller with a load transfer breaker must be installed. Functional description The starting signal for the fire pump is given via two redundant pressure switches. The fire pump can only be switched off manually. The control of the fire pump has been arranged in such a way that motor failures, for example due to heating, do not cause the fire pump to stop, but only in fault indications and/or a potential-free signal to a superordinate fault centre. In addition to the fire pump, ancillary VdS-approved equipment can also be controlled. Controller versions The controller is available in two versions: With monitoring module (WM) Without monitoring module (WO/M). Controller with monitoring module Monitoring modules for power system monitoring as well as for pressure switch wire-breakage and/or shortcircuit monitoring are integrated into the WM version of the controller. It is essential that a corresponding resistance module, WM1, is attached to each pressure switch for this purpose. Controller without monitoring module Without the monitoring modules integrated in this version, no potential-free signals are given in case of phase or pressure-switch failure. Identification Type key, standard operating devices Example: CONTROL FS 1x kW WM System Fire system Number of motors Motor rating Monitoring WM = with monitoring module WO/M = without monitoring module The example above is a controller for a fire fighting pump in the range of 133 to 160 kw. The controller has monitoring modules for phase-failure, cable breakage and short circuit. Type key, optional operating devices Example: OPTION CONTROL FS 1.1C Optional operating devices System Type FS: Fire System Devices 1.1A: Jockey pump (1.5 kw) 1.1B: Jockey pump (2.2 kw) 1.1C: Jockey pump ( kw) 1.2: Compressor ( kw) 2: Pressure-maintaining pump (3.0 kw) 3.1: Level indication, rod electrode 3.2: Level indication, float switch 4: Motor valve 5.1: Fused supply (400 V) 5.2: Fused supply (230 V) Nameplate The nameplate made of sheet metal is riveted to the front door of the control cabinet. The nameplate is positioned at the bottom right of the door. Type: Product No. Serial No. Main Supply: Pump input power: Pump rated current: VdS No.: FS 1x kW WOM X400V 133/160 kw 240/280 A BMA/06&0103/A Made in Germany P Frequency: 50 Hz Enclouse class: IP54 TM Fig. 23 Example of CONTROL FS 1 nameplate 48

49 Controller Construction The control cabinet made of steel sheet is ingressprotected to IP 54. The standard colour of the cabinet is red (RAL 3000). The mounting plate is made of 3 mm galvanised sheet steel. The cabinet design depends on the selected options and the performance of the fire pump. The dimensions of the control cabinet depend on the number of options installed and on whether the controller is for wallmounting or free-standing. See also Cabinet dimensions, page 53. Cables of wall-mounted controllers enter through cable glands. Cables of free-standing controllers enter a 100 mm high base frame and a bottom plate split in three parts. Control panel The control panel design depends on the selected options. The control panel has a number of standard components (applies to all models) and optional components (selected options). See fig. 24 and the tables below. Fire pump Standard components Jockey pump Alarm Status Standard controls and indicator lights Indicator light Button Switch Description H1 Horn (acoustic). H2 White Pump is operating. H3 Blue Pump is manually switched off. H4 Yellow Fault. Alarm S2 S3 S4 S5 S1 Voltmeter with phase-reversing switch. Pump on. Pump off. Horn off. Indicator light test. Optional controls and indicator lights Status Indicator light Button Switch Description H5 White Pump is operating normally. H6 Blue Pump is manually switched off. H7 Yellow Fault. S6 Manual/automatic operation. S8 Pump on. S7 Pump off. H8 White Compressor is operating normally. V Fire pump A Compressor H9 Blue Compressor is manually switched off. H10 Yellow Fault S9 Manual/automatic operation. S11 Compressor on. S10 Compressor off. Pressuremaintaining pump H11 White Pump is operating. H12 Blue Pump is manually switched off. H13 Yellow Fault. S12 Manual/automatic operation. S14 Pump on. S13 Pump off. Fig. 24 CONTROL FS 1 control panel TM Level switch Motor valve H14 H15 White White Minimum water level (electrode in pressure tank) Normal water level (electrode in pressure tank) H16 White Maximum water level (electrode in pressure tank) H17 White Minimum water level (float switch) H18 White Maximum water level (float switch) H19 White Valve is closed. H White Valve is open. H21 Yellow Fault. S16 Valve open. S15 Valve closed. Analog measuring instruments Voltmeter with phase-reversing switch (S1) Ammeter. 49

50 Controller Potential-free signalling contact If a component in the controller detects a change, a potential-free signalling contact will generate a fault indication or indicate a new operating condition. These indications can be seen on the control panel and/or in a superordinate fault centre. Cables Star-delta starting Either one three-core and one four-core cable or two four-core cables, such as NYY and similar types. Direct-on-line or autotransformer staring One four-core cable. Optional equipment Depending on the option selected, two fused supply cables are available for the connection of auxiliary units. Functions adjustable threshold values adjustable response delay phase sequence and phase-failure monitoring asymmetry monitoring with adjustable scale for divergence. Operating modes UNDER (U): Undervoltage monitoring UNDER+SEQ (U+S): Undervoltage and phasesequence monitoring WIN (W): Monitoring of the range between the min. and max. thresholds WIN+SEQ (W+S): Monitoring of the range between the min. and max. thresholds and phase-sequence monitoring. Controller components Overvoltage protection device (option) The overload protection device for the mains configuration TN-S (L1, L2, L3, N, PE) diverts dangerous overvoltages to the protective-earth conductor. When the protection device has been activated, the red indicator light is on TM Display Fig. 26 Regulators and LEDs of the phase-failure relay Regulators Fig. 25 Overvoltage protection device The device consists of four individual modules. For TN-S systems, these modules are individually interchangeable. Each module has a potential-free changeover contact which can trigger the relay for fault indication. Phase-failure relay (only for WM version) The phase-failure relay monitors the three-phase power systems with neutral conductors. The operator can adapt the phase-failure relay to the conditions of the supply network. Note: The device is designed for a rated voltage of 250 V AC and a frequency of 48 to 63 Hz. TM Pos. Description Selection/scale Setpoint 1 Asymmetry 5 to 25 % 10 % 2 Maximum to +30 % 5 % 3 Minimum 30 to + % 10 % 4 Delay 0.1 to 10 seconds 5 seconds 5 Function U, W, U+S, W+S U+S Monitoring module for pressure switches The monitoring module for both pressure switches monitors the cables and wires up to the pressure switches for cable breakage and short-circuiting of the input contacts. The module switches on the fire pump during a decrease in pressure. 50