GRUNDFOS DATA BOOKLET. RC pumps 50 Hz. Multistage, canned-motor, refrigerant pump

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1 GRUNDFOS DATA BOOKLET 50 Hz Multistage, canned-motor, refrigerant pump

2 Contents Introduction General data 3 Introduction 3 Applications 3 Features and benefits 3 Identification Type key 4 Nameplate 5 Selection of product Ordering a pump 6 Performance range Performance range 7 Product range R744 (CO 2 ) 8 R717 (NH 3 ) 10 HFCs (R134a, R404A, R407C, R410A, R507A) 11 Construction Material specification 12 Product description Features 15 Operating conditions 16 NPSH (Net Positive Suction Head) 17 Maximum flow rate 18 Minimum flow rate 18 Minimum differential pressure 18 Sound pressure level 18 Speed control 18 Liquid temperature 18 Ambient temperature 18 Wiring diagrams 18 Curve charts How to read the performance curves 19 Curve conditions 20 Performance tests 20 Performance curves and technical data R744 (CO 2 ) 21 Performance curves, RC2 21 R744 (CO 2 ) 22 Performance curves, RC5 22 R744 (CO 2 ) 23 Performance curves, RC8 23 R717 (NH 3 ) 24 Performance curves, RC2 24 R717 (NH 3 ) 25 Performance curves, RC5 25 R717 (NH 3 ) 26 Performance curves, RC8 26 HFCs (R134a, R404A, R407C, R410A, R507A) 27 Performance curves, RC2 27 HFCs (R134a, R404A, R407C, R410A, R507A) 28 Performance curves, RC5 28 HFCs (R134a, R404A, R407C, R410A, R507A) 29 Performance curves, RC8 29 Dimensions Dimensional sketches 30 Top-suction pump with flanges 30 Dimensional sketches 31 End-suction pump with flanges 31 Dimensional sketches 32 Top-suction pump for 32 Dimensional sketches 33 Service unit 33 Service parts Service parts 34 Service units 34 Service kits 34 Accessories and service kits Accessories 35 Grundfos CUE, external frequency converters 36 Further product documentation WebCAPS 37 WinCAPS 38 2

3 Introduction General data Introduction This data booklet deals with Grundfos RC refrigerant pumps. Fig. 1 Grundfos RC pump The are designed for operation with the most common refrigerants in modern refrigeration and air-conditioning systems. Applications The are designed for the following applications: liquid distribution (LD) to a network of liquid overfeed or direct expansion (DX) evaporators liquid pressure boosting (LPB) in the liquid line of refrigeration and air-conditioning systems general liquid transfer (LT) in refrigeration and airconditioning systems and related systems with similar operating conditions. The flow range of the RC pump series is 0.2 to 9 m 3 /h. TM Features and benefits Main design characteristics of the : barrel-type, semi-hermetic design multistage centrifugal pump canned-motor (no shaft seals) smooth design in stainless steel (1.4301). The are designed and optimised for use with R744 (carbon dioxide, CO 2 ). Main benefits of the : Low energy consumption due to high pump energy efficiency and variable-speed capacity control (Q max. orifice, permanent by-pass). Wide range for variable-speed capacity control (25 to 50 Hz). Easy to install and service due to low weight, compactness and the new service unit concept. Low requirements for NPSH due to hydraulic robustness to occasional vapour bubbles in inlet. Alow value for required NPSH can often lead to areduction in height of the system rack. Pumped liquids The are specifically designed for operation with a wide selection of refrigerants in both oil-free and oil-containing systems: R744 (carbon dioxide, CO 2 ) R717 (ammonia, NH 3 ) R134a, R404A, R407C, R410A, R507A. 3

4 Identification Type key The type key covers the entire range of Grundfos. Example RC 5-7 / 4 A - GM - I - C - / / / / - E Y - I - C - N - R J Type range RC: Refrigerant Circulator Rated flow Value stated in m 3 /h Number of chambers Number of impellers (left out if equal to number of chambers) Pump version A Basic version X Special version Pipe connection W For, top suction F, top suction G ANSI flange, top suction FM, end suction GM ANSI flange, end suction X Special connection, also used for service unit Metals in contact with pumped media I Pump sleeve EN /304 AISI Pump shaft EN /304 AISI Pump impellers/chambers EN /304 AISI Gaskets/seals (excl. neck ring) C Neoprene (chloroprene) / Not applicable / Not applicable / Not applicable / Not applicable Supply voltage FY 3 x V, 50 Hz FZ 3 x V, 50 Hz EY 3 x V, 60 Hz EZ 3 x V, 60 Hz X Special voltage Motor information I Integrated motor (IP66) Mains plug C Cable without plug Sensor N No sensor Pumped media R744 Carbon dioxide (CO 2 ) R717 Ammonia (NH 3 ) R22 RHFC X Chlorodifluoromethane Code for: R134a: tetrafluoroethane R404A: mixture of R125 (44 %), R143a (52 %) and R134a (4 %) R407C: mixture of R32 (23 %), R125 (25 %) and R134a (52 %) R410A: mixture of R32 (50 %) and R125 (50 %) R507A: mixture of R125 (50 %) and R143a (50 %) Undefined media, also used for service unit System pressure H 25 bar J 40 bar K 52 bar X Special system pressure, also used for service unit 4

5 Identification Nameplate The nameplate shows the operating data applying to the pump TYPE NO SN PC f U I1/1 Cos phi P1 T amb, max INS. CL IP Hz V A kw C MODEL Made in Denmark Weight Qnom Hnom Hmax Refrigerant Tliquid, min C Tliquid, max PS max PS max kg m³/h m m C bar MPa Barcode TM Fig. 2 Nameplate, SI version (Système International) Pos. Description Pos. Description 1 Type designation 13 Product number of service unit 2 Product number of pump 14 Model 3 Serial number 15 Weight with cables 4 Production date (YYWW) 16 Rated flow rate 5 Frequency 17 Rated head 6 Rated voltage 18 Maximum head 7 Rated current 19 Refrigerant 8 Power factor 20 Minimum liquid temperature 9 Rated input power 21 Maximum liquid temperature 10 Maximum ambient temperature 22 Maximum system pressure 11 Insulation class 23 Maximum system pressure 12 Enclosure class 5

6 Selection of product Ordering a pump When ordering a pump, you have to take the following aspects into consideration: refrigerant maximum system pressure inlet/outlet configuration pipe connection type rated flow motor voltage. When you have selected the pump type, you can identify the specific pump that best meets your requirements in sections Product range, pages 8 to 11, and Type key, page 4. Accessories and service kits Depending on installation type and pump variant, accessories and service kits may be required. See section Accessories and service kits, page 35, for selection of the correct accessories and service kits. Note: Ordered accessories are not fitted from factory. 6

7 Performance range Performance range Figure 3 shows the performance range of the Grundfos. It gives an overview of the various sizes. TM Fig. 3 Performance range of 7

8 Product range R744 (CO 2 ) Pump type RC2-7 RC5-7 Product number Inlet/outlet configuration and pipe connection Rated voltage Rated current Rated flow System pressure Net weight Complete pump Net weight Service unit Product number [V] [A] [m 3 /h] [bar] [kg] Service unit [kg] 3 x x x x x x x x x x x x x x x x x x x x x x x x

9 Product range Pump type RC8-7 Product number Inlet/outlet configuration and pipe connection Rated voltage Rated current Rated flow System pressure Net weight Complete pump Net weight Service unit Product number [V] [A] [m 3 /h] [bar] [kg] Service unit [kg] 3 x x x x x x x x x x x x

10 Product range R717 (NH 3 ) Pump type RC2-10 RC5-10 RC8-10 Product number Inlet/outlet configuration and pipe connection Rated voltage Rated current Rated flow System pressure Net weight Complete pump Net weight Service unit Product number [V] [A] [m 3 /h] [bar] [kg] Service unit [kg] 3 x x x x x x x x x x x x x x x x x x

11 Product range HFCs (R134a, R404A, R407C, R410A, R507A) Pump type RC2-7/5 RC5-7/5 RC8-7/5 Product number Inlet/outlet configuration and pipe connection Rated voltage Rated current Rated flow System pressure Net weight Complete pump Net weight Service unit Product number [V] [A] [m 3 /h] [bar] [kg] Service unit [kg] 3 x x x x x x x x x x x x x x x x x x

12 Construction Material specification The position numbers in the table below refer to the sectional drawings and the exploded view on the following pages. Pos. Description Material EN standard AISI/ASTM 4a Intermediate chamber with seal ring Stainless steel d Intermediate chamber with holes Stainless steel Inlet filter Stainless steel a Motor flow filter Stainless steel Pump sleeve Stainless steel a Connection for differential pressure transmitter Stainless steel Plug Stainless steel Drain Stainless steel Hexagon socket head cap screw M8 x 40 37a O-ring Neoprene 37b O-ring Neoprene 47a Bearing ring Cemented tungsten carbide (C9M) 48 Stator Steel/copper 49 Impeller Stainless steel Rotor Steel aluminium 55 Motor housing Stainless steel Sleeve-end pump feet Stainless steel a Clamp Stainless steel O-ring Neoprene 122 Priming screw Stainless steel Clamp ring Stainless steel Cover for motor housing Stainless steel b O-ring Neoprene 153 Bearing Cemented tungsten carbide (C9M) 154 Bearing Cemented tungsten carbide (C9M) 157a O-ring Neoprene 177 Connection for power supply Stainless steel with glass sealing 177a Connection for thermal sensor Stainless steel with glass sealing 190 Lifting bracket Stainless steel Motor-end pump foot Stainless steel Thrust bearing, stationary Silicon carbide (SiC) 206 Thrust bearing, rotating Silicon carbide (SiC) 661 Rotor can Stainless steel

13 Construction Fig. 4 Sectional drawing of a Grundfos RC pump TM TM Fig. 5 Sectional drawing of a Grundfos RC service unit 13

14 Construction TM Fig. 6 Exploded view of a Grundfos RC pump 14

15 Product description Features Design The barrel-type design is ideal for high-pressure applications since it has only one seal located between pump sleeve and motor housing. In addition, the weldin version eliminates the need for counter flanges and makes the installation easier. The weld-in version also eliminates the risk of leaks in flanges. The cannedmotor further prevents the escape of refrigerant. The smooth design in stainless steel (1.4301) and the regular shape of the pump make it easy to insulate the pump, which is especially important for lowtemperature applications. The motor housing of the pump must not be insulated for liquid temperatures above +20 C. The moveable feet allow installation on both horizontal and vertical surfaces. If the inlet and outlet pipes are sufficiently supported, the two sleeve-end pump feet can be removed. The pump must always be installed with horizontal orientation of the motor shaft. Pipe system The inlet and outlet pipe system must be designed according to the special requirements for pipe transport of refrigerants (liquids at conditions close to the boiling point). Please observe the requirements for NPSH. Further recommendations for the design of the inlet and outlet pipe sections can be found in the installation and operating instructions for the available on (WebCAPS). Hydraulics The multistage hydraulics has been designed for operation with liquids at conditions close to the boiling point. The first chamber is oversized to occasionally accept a flow of liquid with a low content of vapour bubbles. In addition, all incorporate an inducer to improve the performance under conditions where vapour bubbles are present. A coarse filter is located in the inlet to the first chamber to prevent large burrs and scraps from entering the hydraulics. Bearings The bearing system consists of media-lubricated slide bearings. Both the stationary and rotating parts of the radial bearings are made of tungsten carbide. Both the stationary and rotating parts of the axial bearing are made of silicon carbide. Connections Two different inlet/outlet configurations are available: top suction and end suction. Top suction is preferable as any vapour generated in the pump during standstill can easily escape from the pump through the inlet and backwards to the separator/receiver. The weld-in versions of the are designed for the inlet and outlet connections of the pump sleeve into the pipe system. During the process, the motor and chamber stack must be removed from the pump sleeve. The flanged versions of the have flanges according to EN , Type 11. Flange faces used: face D for pumps with a maximum system pressure of 40 bar g face H for pumps with a maximum system pressure of 52 bar g. These flanges are often referred to as s for refrigeration. Connections for sensors The pump inlet and outlet incorporate connections for a differential pressure transmitter to be used for variablespeed capacity control or for monitoring of the performance. The motor housing has a connection for a pressure transmitter for monitoring of the pressure in the stator housing. In case of a failure of the rotor can, refrigerant will escape into the stator housing. This situation can be detected by using a pressure transmitter to monitor the pressure in the stator housing. All connections for sensors are plugged from factory. Liquid drain The pump sleeve has a drain for removal of liquid refrigerant and/or oil from the pump in case of service or fault finding. A drain valve can be fitted directly to the drain allowing control of the drain. The drain is plugged from factory. Motor The have a three-phase, canned, induction motor (no shaft seals). The motor is cooled by an internal flow of the pumped refrigerant. The internal flow is filtered before entering the space between rotor and rotor can. Due to the characteristics of the internal motor cooling flow, there are limitations to the operating envelope for the RC pumps. For further information on these limitations, see section Operating conditions, page

16 Product description The motor has a built-in thermistor (PTC) for protection of the windings. The thermistor (PTC) must be connected to an external control circuit. The overload relay LT3-SA00M from Schneider Electric (Grundfos part no ) is recommended. Supply voltage The motor is available in two versions for the following supply voltages: 3 x V, 50 Hz 3 x V, 50 Hz. Enclosure class IP66 according to IEC Insulation class F (155 C). Frequency converter Frequency converter operation is allowed in the frequency range from 25 to 50 Hz supply. Power supply cable Cable type H07RN-F4G1 with external galvanised-steel screen PTC temperature signal cable Cable type Cable diameter [mm] Bending radius Fixed Free 11 ± Cable diameter [mm] Bending radius Fixed Free H07RN-F3G1 9 ± As standard, the cables are 5 metres long. Other cable lengths are available. Service and repair The are maintenance-free, i.e. no maintenance is required for that are always operating within the accepted operating envelope. Should it become necessary to inspect or replace the pump, the pump sleeve can remain connected to the pipe system. The motor and chamber stack are removed from the pump sleeve as one unit. The motor and chamber stack can be replaced by a new service unit. Service units can be repaired by selected Grundfos Service Centres. Operating conditions The operating envelope of a refrigerant pump is generally limited by various factors related to the operation close to the boiling point of the refrigerant and the specific properties of the refrigerant. H Q min. Fig. 7 Operating envelope for refrigerant pumps The individual limits are described in the table below. Abbreviation Description Q min. Q max. n max. n min. H min. P2 max. n min. n max. H min. P2 max. Q max. For R744 (CO 2 ), the limits Q min. and H min. depend strongly on the liquid temperature. Q TM Minimum flow through the pump to keep the temperature of the inlet flow to the motor low (mixing of external and internal flows). If Q min. is exceeded, the refrigerant flowing through the motor will start boiling, and the flow through the motor will be reduced. Too high flow through the pump, leading to pressure drop in the inlet. If Q max. is exceeded, the refrigerant flow in the inlet to the pump will start boiling, cavitation will occur, performance will drop, and the flow through the motor may be reduced. Too high speed for mechanical design. If n max. is exceeded, vibrations will occur, wear of bearings will increase, and the power consumption of the motor will be too high. Too low bearing surface speed. If n min. is exceeded, the lubrication of bearings will be inadequate. Too low differential pressure across the motor and consequently insufficient flow through the motor to absorb motor losses without boiling. If H min. is exceeded, the refrigerant flowing through the motor will start boiling, and the flow through the motor will be reduced. Too high load on motor. For Grundfos, this limit falls outside the envelope created by the other limits. 16

17 Product description Figure 8 shows an example of how these limits change with the temperature of the R744 (CO 2 ). Fig. 8 R744 (CO 2 )-specific operating limits for RC pumps Figure 8 shows that, with the increase of the R744 (CO 2 ) liquid inlet temperature, the Q min. and H min. limits reduce the operating envelope. For liquid temperatures between the selected values, interpolation must be used to evaluate the exact temperature limit. Example The operating condition (6 m 3 /h flow and 12 m head) is marked with a dot in fig. 8. This operating condition falls between the temperature limit curves for 15 C and 10 C, indicating that the maximum liquid temperature for this condition lies between 15 C and 10 C. With graphical interpolation the exact temperature limit can be found as 12 C. When operating at this condition for flow and head, the liquid temperature must be lower than 12 C. For R744 (CO 2 ), the saturation pressure at 12 C is 46.3 bar g. For an RC pump with an upper limit for system pressure higher than 46.3 bar g (e.g. 52 bar g), the 12 C will be the upper limit for liquid temperature at this operating point. For an RC pump with an upper limit for system pressure lower than 46.3 bar (e.g. 40 bar g), the upper limit for liquid temperature at this operating point will be the saturation temperature corresponding to the maximum system pressure, for example an upper limit of 40 bar g corresponds to a temperature limit of 6.5 C. TM NPSH (Net Positive Suction Head) The NPSH parameter is a measure of the difference between the actual pressure of a liquid and its saturated vapour pressure at the given temperature. If the pressure in a hydraulic circuit drops below the vapour pressure of the circulating liquid, boiling will occur, typically at the pump inlet, resulting in vapour bubbles appearing in the flow. When the mixture of liquid and vapour bubbles enters the first pump impeller, the pressure will increase, and the bubbles will collapse, resulting in noise, vibrations and sometimes also damage to the impeller. The process of bubbles collapsing in a liquid is called cavitation. For a specific pump, the NPSH value is a function of the liquid properties and the magnitude of the flow. Generally, the higher the flow, the higher the required NPSH. In closed hydraulic circuits where a risk of cavitation is present, it is possible to reduce or prevent cavitation as follows: Shorten the pipe from the separator/receiver to the pump inlet, and hereby reduce friction losses. Increase the cross-section of the pipe from the separator/receiver to the pump inlet to reduce the velocity of the liquid, and hereby reduce friction losses. Minimise the number of pipe bends, and use pipe bends that have a bending radius of more than 1.5 times the pipe diameter. The number of other fittings, for example for a change in diameter, should be minimised. Lower the liquid temperature to reduce the vapour pressure. Figure 9 shows the required NPSH for the. End suction Top suction TM Fig. 9 Required NPSH for 17

18 Product description In addition to the value that can be read from fig. 9, the following safety margins must be applied. R744 (CO 2 ): Add 0.1 m. R717 (NH 3 ): Add 0.4 m. HFCs: Add 0.1 m. Example For an RC5 in top-suction configuration operating with R744 (CO 2 ) and a flow of 5.0 m 3 /h, a value for NPSH of 0.5 m can be read from fig. 9. For R744 (CO 2 ), the safety margin is 0.1 m. The total required NPSH is then 0.5 m m = 0.6 m. Maximum flow rate For R744 (CO 2 ), the maximum flow rate is 115 % of the rated flow. For R717 (NH 3 ) and HFCs, the maximum flow rate is 110 % of the rated flow. However, please observe the increased requirement for NPSH for flows higher than the rated flow. Also observe the increased requirements for minimum head for R744 (CO 2 ), depending on the liquid temperature. See section Performance curves/ technical data, pages 21 to 23. Minimum flow rate Generally, 10 % of the rated flow is accepted as minimum flow. However, please observe the increased requirements for minimum flow for R744 (CO 2 ), depending on the liquid temperature. See fig. 8. Also observe the increased requirements for minimum head for R744 (CO 2 ), depending on the liquid temperature. See section Performance curves/ technical data, pages 21 to 23. Minimum differential pressure Generally, 20 % of the closed-valve pressure at maximum speed is accepted as minimum head. However, please observe the increased requirements for minimum flow for R744 (CO 2 ), depending on the liquid temperature. See section Performance curves/ technical data, pages 21 to 23. Liquid temperature Minimum liquid temperature is generally -55 C. Maximum liquid temperature depends on the refrigerant saturation pressure. For maximum liquid temperature, see the table below the refrigerantspecific performance curve. Please note that for some high liquid temperatures are generally possible, however, the maximum liquid pressure must never be compromised. Both minimum and maximum liquid temperatures are stated on the nameplate. Insulation of the motor housing is not allowed for liquid temperatures above +20 C. Ambient temperature During operation, the minimum ambient temperature is identical to the minimum liquid temperature. The maximum ambient temperature during operation is generally +55 C. During standstill, a maximum liquid temperature of +70 C is allowed. Wiring diagrams 3~ Screened motor cable L1 L2 L3 PE Green/yellow U Brown V Black Fig. 10 Wiring diagram, power supply cable Thermal sensor: PTC according to DIN W To amplifier Relay Blue Rubber cable Brown Blue Fig. 11 Wiring diagram, thermal sensor TM TM Sound pressure level The sound pressure level of the is lower than the limiting values stated in the EC Machinery Directive (2006/42/EC). Speed control Frequency converter operation is allowed in the frequency range from 25 to 50 Hz at 50 Hz supply. 18

19 Curve charts How to read the performance curves The curves on the following pages apply to all versions of the. Page Pump curves, R744 (CO 2 ) Page Pump curves, R717 (NH 3 ) Page Pump curves, HFCs 21 Performance curves, RC2 24 Performance curves, RC2 27 Performance curves, RC2 22 Performance curves, RC5 25 Performance curves, RC5 28 Performance curves, RC5 23 Performance curves, RC8 26 Performance curves, RC8 29 Performance curves, RC8 Motor power consumption (P 1 ) Total pump head H = H total Supply frequency QH curve Pump type Temperature limitation curve Curve for motor power consumption TM Fig. 12 Performance curves QH curves The QH curves represent pump performance at constant supply frequency. These curves have a thin and a thick section. The thick section represents approved operating conditions. The small thin section represents pump characteristics at operating conditions that are only allowed for very short periods. Motor power consumption curves This curve represents the power consumption of the motor at 50 Hz supply (full speed). For pumps designed for operation with HFCs, the curve represents the power consumption of the motor when operating at 50 Hz supply (full speed) with R134a with a liquid temperature of -10 C. For operation with other HFCs, the power consumption must be calculated in Grundfos WebCAPS. Grundfos WebCAPS is a Web-based Computer Aided Product Selection program available on Liquid temperature limitation curves The liquid temperature limitation curves are relevant for operation with R744 (CO 2 ) only and are therefore only present on performance curves for pumps for this refrigerant. The curves represent an upper limit for the liquid inlet temperature. Operation in the area above a specific temperature limitation curve is only possible if the liquid inlet temperature is equal to or below the temperature of the specific temperature limitation curve. See example under operating conditions. 19

20 Curve charts Curve conditions The guidelines below apply to the curves on pages 21 to 29. Tolerances according to ISO 9906, Annex A Then curves apply to the pumping of the relevant refrigerant at a temperature of -10 C. For pumps for HFCs, the refrigerant chosen is R134a as this has the highest density of the selected HFCs. Performance tests The requested duty point of every pump is tested according to ISO 9906, Annex A, and without certification. Calculation of total head The total pump head consists of the height difference between the measuring points + the differential head + the dynamic head. H total = H geo + H stat + H dyn H geo : H stat : H dyn : Height difference between measuring points. Differential head across the pump. Calculated values based on the velocity of the pumped liquid on the inlet and outlet sides of the pump. 20

21 Performance curves and technical data R744 (CO 2 ) Performance curves, RC2 TM Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class 1) Only 52 bar systems. Max. liquid temperature [ C] 3 x IP66 F 6 (16 1 ) 3 x IP66 F 6 (16 1 ) 21

22 Performance curves/ technical data R744 (CO 2 ) Performance curves, RC5 TM Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class 1) Only 52 bar systems. Max. liquid temperature [ C] 3 x IP66 F 6 (16 1 ) 3 x IP66 F 6 (16 1 ) 22

23 Performance curves/ technical data R744 (CO 2 ) Performance curves, RC8 TM Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class 1) Only 52 bar systems. Max. liquid temperature [ C] 3 x IP66 F 6 (16 1 ) 3 x IP66 F 6 (16 1 ) 23

24 Performance curves/ technical data R717 (NH 3 ) Performance curves, RC2 TM Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class Max. liquid temperature [ C] 3 x IP66 F 40 3 x IP66 F 40 24

25 Performance curves/ technical data R717 (NH 3 ) Performance curves, RC5 TM Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class Max. liquid temperature [ C] 3 x IP66 F 40 3 x IP66 F 40 25

26 Performance curves/ technical data R717 (NH 3 ) Performance curves, RC8 TM Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class Max. liquid temperature [ C] 3 x IP66 F 40 3 x IP66 F 40 26

27 Performance curves/ technical data HFCs (R134a, R404A, R407C, R410A, R507A) Performance curves, RC2 TM The shown P1 curve applies to the HFC refrigerant with the highest density (R134a). Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class Max. liquid temperature [ C] 3 x IP66 F 40 3 x IP66 F 40 27

28 Performance curves/ technical data HFCs (R134a, R404A, R407C, R410A, R507A) Performance curves, RC5 TM The shown P1 curve applies to the HFC refrigerant with the highest density (R134a). Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class Max. liquid temperature [ C] 3 x IP66 F 40 3 x IP66 F 40 28

29 Performance curves/ technical data HFCs (R134a, R404A, R407C, R410A, R507A) Performance curves, RC8 TM The shown P1 curve applies to the HFC refrigerant with the highest density (R134a). Voltage [V] P1 [kw] I 1/1 [A] Cos Enclosure class Insulation class Max. liquid temperature [ C] 3 x IP66 F 40 3 x IP66 F 40 29

30 Dimensions Dimensional sketches Top-suction pump with flanges TM Dimension [mm] RC2-7 RC2-10 RC5-7 RC5-10 RC8-7 RC8-10 System pressure [bar] 25/ /40 25/ /40 25/ /40 A B C D E E E E E H H H L (incl. cable) * * 890* 1009* L * * 760* 879* LS (service space) W DN in DN out PN [bar] 25/ /40 25/ /40 25/ /40 Face groove D H D D H D D H D *For inlet flanges with diameter > 150, the dimensions L and L1 are increased with flange diameter/2-76 mm. This is done since the dimension L must indicate the maximum total length of the product (box dimension). 30

31 Dimensions Dimensional sketches End-suction pump with flanges TM Dimension [mm] RC2-7 RC2-10 RC5-7 RC5-10 RC8-7 RC8-10 System pressure [bar] 25/ /40 25/ /40 25/ /40 A C D E E E E E H H H L (incl. cable) L LS (service space) W DN in DN out PN [bar] 25/ /40 25/ /40 25/ /40 Face groove D H D D H D D H D 31

32 Dimensions Dimensional sketches Top-suction pump for TM Dimension [mm] RC2-7 RC2-10 RC5-7 RC5-10 RC8-7 RC8-10 System pressure [bar] 25/40/52 25/40/52 25/40/52 25/40/52 25/40/52 25/40/52 A B C D E E E E E H H H L (incl. cable) L LS (service space) W in 33.7 x x x x x x 2.9 out 26.9 x x x x x x

33 Dimensions Dimensional sketches Service unit TM Dimension [mm] RC2-7 RC5-7 RC2-10 RC5-10 RC8-7 RC8-10 System pressure [bar] 25/40/52 25/40/52 25/40/52 H L (incl. cable) W

34 Service parts Service parts Service units If it is necessary to replace an RC pump, a service unit is required. The pump sleeve can often remain in the system during replacement. It will only be necessary to replace the sleeve in the very rare cases where the sleeve has become damaged. Letting the sleeve stay in the system reduces the cost and time needed for carrying out a replacement. The service unit is a complete pump (chamber stack, motor and cables), but without the pump sleeve and feet. A service unit comes with a complete set of new O-rings for the two internal interfaces and for the main seal (three different sizes). The correct service unit can be selected from the tables in section Product range, pages 8 to 11. The part number of the correct service unit can also be found on the pump nameplate. The same service unit can be used for all RC pump variants with identical refrigerant, rated flow and motor supply voltage. Variations in inlet/outlet configuration, flange or connection type and maximum system pressure have no influence on the selection of service unit. Service kits Set of gaskets for pump with connections Each set includes gaskets for both inlet and outlet flange connections. Product number Description RC2 25/40 bar RC5 25/40 bar RC8 25/40 bar RC bar RC bar RC bar 1 For maximum system pressure equal to 52 bar, the correct flanges are PN 63. Set of O-rings for pump Product number Description O-ring kit (all pumps) 34

35 Accessories and service kits Accessories Product Description Dimensions Product number TM Blind flange for pump sleeve. Complete set consisting of one blind flange, 16 screws and one O-ring TM Set of DIN blind flanges for pipe system. To be used for closing the pipe system if the pump sleeve is removed from the system. Blind flanges are to be installed on the counter flanges welded into the pipe system. Complete set consisting of one blind flange for inlet counter flange and one blind flange for outlet counter flange. For each blind flange a set of four bolts, four nuts and one gasket is included. Material certificates for both blind flanges are included in the set. RC2 25/40 bar RC5 25/40 bar RC8 25/40 bar RC bar RC bar RC bar RC2 25/40 bar TM Set of DIN counter flanges for pipe system. To be used for connecting flanged versions of the RC pump to the pipe system. Counter flanges are to be welded into the pipe system. Complete set consisting of one counter flange for inlet connection and one counter flange for outlet connection. For each counter flange a set of four bolts, four nuts and one gasket is included. Material certificates for both counter flanges are included in the set. RC5 25/40 bar RC8 25/40 bar RC bar RC bar RC bar Cables for power supply and PTC in lengths of either 5 m or 10 m. The power supply cable is screened (external screen). Cables for power supply and PTC must be ordered separately. Power supply cable 5 m Power supply cable 10 m PTC cable 5 m PTC cable 10 m For maximum system pressure equal to 52 bar, the correct flanges are PN

36 Accessories and service kits Grundfos CUE, external frequency converters Functions Intuitive start-up guide The start-up guide enables easy installation and commissioning as well as plug-and-pump convenience. Few settings need to be made by the installer as the rest is done automatically or preset from factory. Smart user interface Fig. 13 Grundfos CUE The Grundfos CUE is a complete range of wallmounted frequency converters for speed control of pump capacity. Grundfos CUE provides a variety of benefits to the enduser, such as: Grundfos E-pump functionality and user interface increased performance and lower energy consumption compared to fixed-speed pump solutions control of solenoid valve in by-pass simple installation and commissioning compared to standard frequency converters. GrA 4404 Fig. 14 Grundfos CUE user interface Grundfos CUE features a unique user-friendly control panel with graphic display and easy-to-use buttons. Panel layout resembles the well-known Grundfos R100 remote control, which is used with Grundfos E-pumps. Control Grundfos CUE has a built-in PI controller offering closed-loop control of the differential pressure. Wide product range The CUE product range is quite comprehensive, covering five different voltage ranges, enclosure classes IP20/21 (Nema 1) and IP54/55 (Nema 12), and a wide range of output powers. The table below provides a general overview of the products relevant for. TM Input voltage [V] Output voltage [V] Motor [kw] 1 x x x x x x External communication Grundfos CUE can communicate with LON, Profibus, Modbus or BACnet via a Grundfos CIU (Communication Interface Unit). 36

37 ... Further product documentation WebCAPS WebCAPS is a Web-based Computer Aided Product Selection program available on WebCAPS contains detailed information on more than 185,000 Grundfos products in more than 20 languages. In WebCAPS, all information is divided into six sections: Catalogue Literature Service Sizing Replacement CAD drawings. Catalogue This section is based on fields of application and pump types, and contains technical data curves (QH, Eta, P1, P2, etc.) which can be adapted to the density and viscosity of the pumped liquid and show the number of pumps in operation product photos dimensional drawings wiring diagrams quotation texts, etc. Literature In this section you can access all the latest documents of a given pump, such as data booklets installation and operating instructions service documentation, such as Service kit catalogue and Service kit instructions quick guides product brochures. Service This section contains an easy-to-use interactive service catalogue. Here you can find and identify service parts of both existing and discontinued Grundfos pumps. Furthermore, this section contains service videos showing you how to replace service parts. 37

38 Further product documentation Sizing This section is based on different fields of application and installation examples, and gives easy step-by-step instructions in how to select the most suitable and efficient pump for your installation carry out advanced calculations based on energy consumption, payback periods, load profiles, life cycle costs, etc. analyse your selected pump via the built-in life cycle cost tool determine the flow velocity in wastewater applications, etc. Replacement In this section you find a guide to selecting and comparing replacement data of an installed pump in order to replace the pump with a more efficient Grundfos pump. The section contains replacement data of a wide range of pumps produced by other manufacturers than Grundfos. Based on an easy step-by-step guide, you can compare Grundfos pumps with the one you have installed on your site. When you have specified the installed pump, the guide will suggest a number of Grundfos pumps which can improve both comfort and efficiency. CAD drawings In this section it is possible to download 2-dimensional (2D) and 3-dimensional (3D) CAD drawings of most Grundfos pumps. These formats are available in WebCAPS: 2-dimensional drawings:.dxf, wireframe drawings.dwg, wireframe drawings. 3-dimensional drawings:.dwg, wireframe drawings (without surfaces).stp, solid drawings (with surfaces).eprt, E-drawings. WinCAPS Fig. 15 WinCAPS CD-ROM WinCAPS is a Windows-based Computer Aided Product Selection program containing detailed information on more than 185,000 Grundfos products in more than 20 languages. The program contains the same features and functions as WebCAPS, but is an ideal solution if no Internet connection is available. WinCAPS is available on CD-ROM and updated once ayear. Subject to alterations. 38

39 39

40 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence ECM: GB The name Grundfos, the Grundfos logo, and the payoff Be Think Innovate are registrated trademarks owned by Grundfos Management A/S or Grundfos A/S, Denmark. All rights reserved worldwide. GRUNDFOS A/S. DK-8850 Bjerringbro. Denmark Telephone:

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