Operating Instructions - SONDERMANN Pumpen + Filter GmbH
Contents
1. NOTE In order to protect their employees and other people as well as the environment from harmful influences and effects when handling hazardous substances industrial and commercial companies are obliged to comply with legal provisions referring to labour protection such as the German Workplace Regulations ArbSt ttV Hazardous Substances Regulations GefStoffV and regulations for the prevention of accidents as well as environmental regulations such as the German Waste Act AbfG and the Water Resources Law WHG We therefore ask you to enclose a declaration of harmlessness with any pump or component you send us for repair With this form duly filled in and signed you declare that the pump or the component was cleaned and thorougly rinsed with neutral fluid before being shipped to us Notwithstanding this we reserve the right to refuse acceptance of repair orders for any other reason So SONDERMANN products and their components are neither serviced nor repaired unless this declaration of harmlessness is enclosed see page below Pumps that have been operated with radioactive substances are not accepted at all In case that although the pump was carefully emptied and cleaned we have to take any safety precautions you have to give us the necessary information when sending the pump or its component 26 Operating Instructions 12 Declaration of harmlessness The undersigned herewith declares that the following pump a2. Electrical Connection EE 13 5 4 Check sence ge LEE 14 6 iiaii 14 6 1 Preparations for Stating E 14 6 2 Stanmg the pump cce oe opor E matu e mc n M de Ue e 15 SAC We 15 64 JSutsdoWwmnprOGedul s toes e eege 16 Gis Ee WEEN 16 7 Service Maimltenanc d 16 FA OeneralIntormaliopm sop e e e nei i UC pep emp 16 7 2 Preventive maintenance n e en 16 Operating Instructions 7 9 Dismantling the pump head eere idee Ser erp te ran tine die Acacia 17 Mie E E Ne e la ME 19 9 Spare Rue udo COE Dav cd Rud dua Due da 20 9 1 Explo ded E 20 9 2 Spare E 21 UR TE rine rr rir tud rex ui nw cedi idw ee c n cvi 22 10 1 Dimensioned drawing and specifications of RM Type 2 22 10 2 Dimensioned drawing and specifications of RM Type 20 23 10 3 Dimensioned drawing and specifications of RM Twin Pump 2D 24 10 4 Ree ele 25 11 Labour protection and accident prevention 26 12 Declaration of harmlessness eeeeeeeeeeeeeeeeeeeeennne nennen nnn 27 Operating Instructions 1 General information The pump may only be used in the range of applications authorized by the manufacturer In case of modified operating con
3. Safety instructions relevant for maintenance inspection and assembly work It shall be the plant operator s responsibility to ensure that all maintenance inspection and assembly work is performed by authorized and qualified personnel who have adequately familiarized themselves with the subject matter by studying this manual in detail Any work on the equipment shall only be performed when it is at a standstill Make sure to strictly follow the procedure for shutting down the equipment prescribed in this manual Pumps and pump units that deliver hazardous fluids must be decontaminated after use On completion of work all safety and protective guards must be re installed and be fully operational again Prior to restarting the pump make sure to follow the instructions detailed in the Starting chapter below 2 7 Unauthorized alterations and production of spare parts The user is not allowed to subject the pump to any modification unless agreed upon with the manufacturer It is in the interest of your safety to use genuine spare parts and accessories authorized by the manufacturer Use of other parts may exempt the manufacturer from any liability resulting thereof 2 8 Inadmissible modes of operation Die Betriebssicherheit der gelieferten Maschine ist nur bei bestimmungs gem Ber Verwendung entsprechend Abschnitt 1 Allgemeines der Betriebsanleitung gew hrleistet Die im Datenblatt angegebenen Grenzwerte d rfen auf keinen Fall bersch
4. as a whole as well as parts of it should be disposed of in an environmentally safe way CAUTION Please comply with the respective regulations that are currently in force at your place especially with regard to electronic scrap 7 Service and maintenance 7 1 General information This pump is designed for continuous operation and does not require specific maintenance 7 2Preventive maintenance Although bearings centering shaft and starting rings are designed for continuous operation they should be periodically inspected for deposits Disassembly of the pump head 16 Operating Instructions 7 3 Dismantling the pump head 1 Remove the 6 srews 901 1 of the pump 2 Take off the suction flange 162 from the housing 101 pump housing 161 Pull out the impeller magnet with impeller 230 847 1 and the centering shaft 211 Required tool open end or ring Tools No tools required spanner of size 10 3 Take off the thrust disc 314 1 of the 4 Exchange of bearings 310 1 310 2 at pump housing 161 impeller magnet and impeller 847 1 und 230 a Take off the tool of the impeller magnet in front direction plug in connection and press the bearing out Tool Screwdriver b Press out the bearing of the impeller magnet in rear direction Tool Arbor c Puttogether impeller and magnet front direction plug in connection and press the bearing out d Press in the new bearings with lever press and a
5. SONDERMANN PUMPEN FILTER GMBH amp Co KG Operating Instructions Magnetically coupled centrifugal Pumps Types 2 24 2D made of PP und PVDF Operating Instructions EG Konformitatserklarung EC Declaration of Conformity D claration de Conformit CE Hiermit erkl ren wir dass die Bauart der SONDERMANN magnetisch gekuppelte Kreiseloumpen 45 W 7 5 kW in verschiedenen Werkstoffen und Ausf hrungen in der gelieferten Ausf hrung folgenden einschl gigen Bestimmungen entspricht We herewith confirm that the construction of SONDERMANN magnetically coupled centrifugal pumps 45 W 7 5 kW of different materials and versions corresponds to the following EC rules Nous confirmons que la construction des pompes centrifuges accouplement magn tique SONDERMANN 45 W 7 5 kW de mat riaux et versions diff rents est conforme aux dispositions r glementaires suivantes 1 EG Richtlinie Maschinen 2 EG Niederspannungsrichtlinie 98 37 EG 73 23 EWG 93 68 EWG 1 Anderung EC Machinery Directive 98 37 CE EC Low Voltage Directive 73 23 EEC Directive CE Machines 93 68 EEC 1 Amendment 98 37 CE Directive CE Bas Voltages 73 23 93 68 CEE 1 re Modification K ln 01 09 2007 SONDERMANN FILTER GMBH amp Co KG d Klaus Gesch ftsf hrer Operating Instructions CONTENTS 1 General Information RTE 5 11 Fields of applicatior WEE 5 1 2 Technical data EE 6 AE EA E T 7 2 1 Marki
6. ar casing 19 Operating Instructions 9 Spare Parts 9 2 Exploded view Drawing No 02 2 395 000 20 412 4 Operating Instructions 9 2 Spare Parts List ps eem pes pese Hirschmann plug socket GDM 3009 554 6 Washer 6 4 DIN 125 A 2 3 1 Motor lantern type 2 Insulated paper peo 1 Cover for terminal box type 2 Condenser holder Pump housing type 2 G 114 Sealing 162 1 Suction flange type 2 G 174 Motor housing type 2 Impeller type 2 Cable connection Pg 9 310 1 1 833 1 1 Terminal box without cover type 2 Pg 9 11 310 2 Bearing ceramic type 2 833 2 Terminal box for Hirschmann plug socket 314 1 Thrust disc ceramic type 2 Terminal board type 2 320 1 1 Ball bearing 6202 ZZ C 2 847 1 1 Impeller magnet type 2 320 2 Ball bearing 6001 ZZ 847 2 Drive magnet type 2 400 1 Seal for terminal box type 2 Footplate type 2 PP 400 2 Seal for terminal box type 2 900 1 Oylinder head bolt M4x12 DIN 84 400 3 Seal for Hirschmann plug socket 900 2 Hirschmann Befestigungsschraube M 3 x 35 412 1 O Ring for Housing 90 x 2 5 Cylinder head bolt M4x45 DIN 931 A2 412 2 O Ring 93 x 2 9011 6 Hexagon screw M 6x45 DIN 931 A2 412 3 Ring for pressure joint 26 x 3 5 901 2 Hexagon screw 6 x 16 DIN 933 A 2 412 4 O Ring for suction joint 30 x 3 904 1 1 Thread pin M 5 DIN 916 45 H Rectangle disc A 2 Oylinder head bolt Parts of wear and tear NOTE Whe
7. ating Clogged ventilator cowl Clean the ventilator and the cowl Motor is overloaded Reduce the delivery rate Use a stronger motor Pump is working but not Gas accumulation in the lines Evacuate the lines delivering Valve in suction delivery line Open the valves is closed Too much flow noise Cavitation Increase the suction line cross section Reduce the delivery rate cool down the fluid Pump is not sucking No fluid in the pump Open the vane Air in the system Evacuate the system Delivery rate too low Suction and delivery line Increase the suction and cross sections are too small delivery line cross sections significant losses Valve is not entirely open Entirely open the valve Delivery rate too high Pump losses are less Install a flow control valve in significant than presumed the delivery line NOTE If the pump runs dry the inner magnet usually bonds with the rear casing Because of the impeller rotation the fluid remaining in the pump housing heats up and evaporates As the resulting frictional heat cannot be removed the plastic material of the casing plasticizes and bonds with the inner magnet by friction bonding So do not run the pump with the discharge or the suction line closed for a longer period of time Once the pump has run dry liquid will leak out of the bore hole of the lantern between pump and motor This means that the bonding of the interior parts with each other has resulted in a leaky re
8. ce with safety instructions Non compliance with safety instructions may produce a risk to personal life and health as well as to the environment and the pump and may result in a loss of any right to claim damages Non compliance may involve risks such as failure of important functions of the pump and or the installation failure of specified procedures of service and maintenance exposure of persons to electrical mechanical magnetic and chemical hazards endangering of the environment because of hazardous substances leaking 2 4 Working in compliance with safety regulations When operating the pump make sure to observe the safety instructions contained in this manual as well as the relevant national accident prevention regulations and any other service and safety instructions issued by the plant operator 2 5 Safety instructions relevant for operating the pump f hotor cold machine components create any risk they must be guarded against accidental contact Guards for moving parts must not be removed from the equipment during operation Hazardous i e toxic hot fluids must be drained off to prevent any risk to persons or the environment Statutory regulations are to be complied with in any case Any hazard resulting from electricity should be ruled out completely For details see the German VDE specifications and the bye laws of your local power supply utilities for example Operating Instructions 2 6
9. city within the discharge line is 3m s To adjust the flow rate we recommend installing a control element to the discharge line 5 3 Electrical connection All electrical connections to the pump should be performed by experts only 12 Operating Instructions All electrical connections and installations of additional protection devices should be performed by experts only and in accordance with the instructions of your local power supplier and or the Association of German Electrotechnical Engineers VDE Make sure that the power supply has been cut off for at least 5 minutes before you start working on the terminal box of the pump The electrical connections had to be done according to the following schematic Connection scheme single phase delta connection 230V L1 yellow L2 Eet green L3 purple 400 V purple Check out whether the power supply available corresponds to the data given on the nameplate The motor must be equipped with a motor circuit breaker or a pilotherm to protect it from overloading NOTE Motor protection devices are available with the pump s manufacturer 13 Operating Instructions 5 4 Check sense of rotation CAUTION Do not check the sense of rotation before the pump is filled with fluid Fill the pump housing and the suction line with water or the fluid to be delivered e Check the sense of
10. clockwise seen from the pump towards the motor Rotation speedl 900 min 1 3400 min 1 Protection class IP 55 Sense of rotation approx 4 0 7 0 kg Max admissible temperature of fluid delivered 8 3 5 lt 95 Maximum system pressure at 20 2 5 bar PVDF 3 5 bar NOTE To find out the maximum admissible temperature of the fluid delivered check out the materials of which the pump is made and which are indicated on the nameplate or the delivery note The letters written on the nameplate are to be read as follows U P glass fibre reinforced Polypropylene VDF Polyvinylidene Fluoride Oxide Ceramics PTFE graphite gasket ceramic sleeve bearings ceramic starting ring of the pump housing ceramic centering shaft AAAOAU materials available V FKM fluorinated rubber EPDM Ethylene Propylene Terpolymer T FEP Fluorinated Ethylene Propylene coated Operating Instructions 2 Safety When installing operating and maintaining the pump the mounting and operating instructions detailed in the following should be strictly observed Hence it is absolutely necessary that prior to assembling and starting the pump the responsible installation personnel and or users carefully read these operating instructions Make sure that they are always available wherever the pump is used Not only the safety instructions detailed in this Safety chapter are to b
11. ditions please consult your pump s supplier and or the manufacturer 1 1 Fields of application Pumping low viscosity liquids resembling water Pumping of acids bases and others Pumping of gaseous fluids Any use other than the authorized one as well as any conversion of the pump is not permitted CAUTION Make sure that the materials of which the pump is made are resistant to the fluids delivered NOTE Ask your pump s supplier or the manufacturer for the respective chemical resistance list e f you deliver crystallising fluids make sure that the fluid does not crystallise within the pump Should this happen carefully rinse off all parts being in contact with the fluid once the pump has been shut off NOTE Disassembly of the pump will cancel the right to all warranty claims Power ratings The nameplate on the pump not only specifies its model type but also its operating data and serial number Please indicate all these data when inquiring about an issue reordering parts and especially when ordering spare parts For further information contact your pump s supplier or the manufacturer Operating Instructions 1 2 Technical data Performance charts see page 21 Max volume flow see name plate Max delivery head see name plate PP PVDF stainless steel Used Materials ceramics FKM EPDM or FEP Supply voltage see name plate Motor power 0 09 up to 0 25 kW Rated current A see name plate
12. e observed but also the specific safety instructions provided in the following chapters 2 1 Marking of safety instructions in this operating manual Safety instructions given in this manual and non compliance with which could be injurious to human beings are identified by the general safety sign acc to German DIN 4844 W standard Warnings of electricity are identified by the specific safety sign acc to German DIN 4844 W standard Safety instructions non compliance with which would give rise to malfunctions of the equipment are identified by Signs and labels affixed to the equipment such as arrows indicating the sense of rotation symbols indicating fluid connections warnings to protect the pump from dry running must be strictly observed and always kept legible Operating Instructions 2 2 Qualification and training of operating personnel All personnel responsible for operation maintenance inspection and assembly of the pump must be adequately qualified Scope of responsibility and supervision of the personnel must be exactly defined by the plant operator If staff members do not have the necessary knowledge they should be trained and instructed accordingly If necessary the pump manufacturer or supplier will hold this training on behalf of the plant operator The operator should also make sure that all operating instructions are fully understood by all personnel 2 3 Hazards in the event of non complian
13. eriod of time This may result in heating up the fluid inside the pump housing and damaging interior components of the pump CAUTION Always protect the pump from coarse impurities and magnetisable metal particles within the fluid delivered 6 3Operation If the motor circuit breaker switched off the pump motor proceed as follows Before switching on the motor again check whether the impeller turns readily Make sure that the suction line and the pump housing are filled with fluid Switch on the motor 15 Operating Instructions If the pump delivers for a short period of time only and then stops pumping the magnetic coupling has been disengaged Proceed as described in chapter 8 Troubleshooting below 6 4 Shut down procedure Switch off the motor Close all valves Incase some fluid remains within the pump secure the shut off valves to prevent an accidental opening Ifthe pump is not to be used for some time carefully rinse it off with a clean and neutral liquid This is to prevent remaining fluid from depositing within the pump and the sleeve bearings e Ifthe pump is shut down for repair or maintenance work lock the driving unit so that it cannot be switched on Before dismantling the pump close the suction and the discharge lines and empty the pump under controlled conditions Secure all valves to prevent an accidental opening Wear protective clothing 6 5 Waste disposal This product
14. ient atmosphere Because of magnetic power transmission there is no need to mechanically seal the shaft So in contrast to mechanically or gland sealed pumps leakages through worn shaft sealings are definitely ruled out This pump is magnetically coupled So when handling permanent magnet components during repair or maintenance work you are exposed to magnetic forces which might influence pacemakers for example Keep your distance The pump housing parts are sealed by static O rings The impeller of the pump is a radial flow wheel Depending on the fluid delivered each component of the pump is available in various materials NOTE The materials used for the pump are specified on its nameplate or the delivery note Choice of materials depends of type see nameplate Pump housing and PVDF rear casing impeller and impeller magnet coating Centering shaft Sleeve bearings oxide ceramic TT WEE Static O ring seals FKM EPDM FEP FKM and FEP coated 10 Operating Instructions 4 3 Accessories and optional equipment Accessory components including hose connections pilotherms motor circuit breakers and flow monitors are available on request 5 Mounting and installation The pump should be installed at a place that allows easy access at any time Make sure to keep to the following limit values Ambient temperature 10 bis 40 Humidity of the air max 95 relative humidity non co
15. ing your order Position of the discharge port vertical position is standard differing positions at 12 x 30 are possible please indicate when placing your order d25 DN20 10 100 10 110 12 130 k 8 Las ss me EE EE 0 09 0 18 025 012 0 18 0 25 0 108 0 216 0 30 EE 0 14 0 216 0 30 0 216 0 30 0 216 0 35 0 65 0 65 Ee es 0 45 0 65 0 65 Foes 055 045 oss 1 02 m5 25 sso sas 250 ues aso 265 sas mas 265 ses ano continuously adjustable from 20 to 45 mm Available only in 60 Hz With maximum volume rate of flow To deliver liquids with a higher relative density the pump has to be throttled see the following performance chart 23 Operating Instructions 9 3Dimensioned drawing and specifications of RM Twin Pump 2D 8 60 series connection 230 V ac or 230 400 V three phase current __ P ME JL 35br 24 Operating Instructions 9 4 Capacity curves H ft Hip WS 39 36 33 30 l min 40 60 80 100 120 140 US GPM 12 15 20 24 28 32 36 Q IMP GPM 4 8 12 16 20 24 28 32 400 350 12 130 60Hz 300 E Gei 250 B z 200 e 150 400 50 10 Low SS 05 2 nur als 20 mit unbeluftetem Motor lieferbar Messwerte ermittelt mit Wasser 20 C 25 Betriebsanleitung 11 Labour protection and accident prevention
16. n ordering spare parts please indicate the items of the required parts the pump type the serial no motor output and the drawing no NOTE Item 689 is only required for motors with an output of 250 W Item 833 1 and 826 may be replaced at item 833 2 400 3 001 and 900 2 Item 732 and 837 are only necessary in case of A C motors 21 Operating Instructions 9 Appendix 9 1 Dimensioned drawing and specifications of RM Type 2 1 1 4 O Ring 26x3 5 1 1 4 O Ring 30x3 Position ot the terminal box standard position is on top it you need it mounted on the right or the left please indicate when placing your order Position of the discharge port vertical position is standard differing positions at 12 x 30 are possible please indicate when placing your order 5 50 8 60 10 110 SSS 118 WE EH s 28 15 29 14 0125 Lag 0250 0 370 9 026 B n xs 102 2850 _ 1 0 sun 75 a nm aw 322 ws 123 o Mos 8 168 continuously adjustable from 20 to 45 mm 230 V ac or 230 400 V three phase current hose proof according to IP 55 eer See i wl PVDF 80 2 0 Operating Instructions 9 2 Dimensioned drawing and specifications of RM Type 2U non ventilated Position of the terminal box standard position is on top if you need it mounted on the right or the left please indicate when plac
17. nd its accessories are harmless and asks you to service and or repair it or them Type of the pump We herewith declare that the pump was not used to deliver harmful or noxious substances it was used with the following fluids before being shipped the pump was carefully emptied and cleaned inside and out it is not necessary to take any special safety precautions you have to take the following safety precautions with regard to residual fluids and waste disposal Date signature 27 SONDERMANN FILTER GMBH amp Co KG August Horch Str 4 D 51149 K ln Cologne Germany Tel 49 0 2203 9394 0 Fax 49 0 2203 9394 48 info sondermann pumpen de www sondermann pumpen de 28 Copyright by SONDERMANN PUMPEN FILTER GMBH amp Co KG e Technische Anderungen vorbehalten e SB BG2 BG2U BG2D 08 2009 E Operating Instructions Subject to technical modification 29
18. ndensing NOTE In case of higher ambient temperatures please contact your pump s supplier or the manufacturer 5 1 Mounting The pump is usually mounted in horizontal position vertical position only upon request This pump is not self priming and therefore requires a feed line 11 Operating Instructions 5 2 Hose and pipe lines Make sure that the cross sections of the pipelines fit the suction and discharge ports All suction and discharge lines to the pump housing should be free of tensile stress The weight of the hose and pipe lines must not rest on the housing CAUTION Do not install any quick acting stop valves into the pipelines since pressure jerks will damage the pump housing 5 2 1 Suction line The suction line should be a tube or hose which will not deform by the resulting partial vacuum or by high temperatures The suction line should be as short as possible Make sure to mount it so that there will be no gas accumulation When dimensioning pipelines fittings etc make sure to keep the flow resistances as low as possible Flow velocity within the fitted suction line should not exceed the limit of 1m s For easy installation and removal of the pump a shut off valve but no diaphragm valve should be built into the suction line CAUTION Do not use the shut off valve built into the suction line to adjust the delivery rate 5 2 2 Discharge line Standard flow velo
19. ng of safety instructions in this operating manual 7 2 2 Qualification and training of operating 8 2 3 Hazards in the event of non compliance with safety instructions 8 2 4 Working in compliance with safety regulations 8 2 5 Safety instructions relevant for operating the Dump 8 2 6 Safety instructions relevant for maintenance inspection and assembly work 9 2 7 Unauthorized alterations and production of spare parts 9 2 8 Inadmissible modes of operation 9 3 Transport and storage dana akin 9 C ellen VIe x ee rx hak 9 32 Storage Sete see d esed cem a eU e an hae 9 4 Functional characteristics and 9 4 1 General descriptiOri te e etes Rete ail rer ENEE ege 9 4 2 Constructional OeSIClI s ou oett ert hee HERR He 10 4 3 Accessories and optional equipment eeeeeeseeeeeneeeneennenrene 11 5 Mounting Installation eebe eege MEO Pe Dad RO 11 5 1 ud oO oec b oi D 11 5 2 Hosexand Deet 12 52 1 SUCHOM INe EE 12 9 2 2 Disch rg EE 12 59 1
20. rbor centering shaft good centered 310 2 17 Operating Instructions __ CAUTION After having replaced the bearings and before re assembling the pump outlet impeller casing check manually if the impeller magnet 847 1 and bearings 310 really rotate on the centre shaft 211 To assemble the pump outlet impeller casing repeat step 1 to 3 in reverse order CAUTION After re assembling the pump head the impeller 230 and impeller magnet 847 1 should be able to slide axially on the centre shaft 211 e Any other repair than the replacement of word parts should be done only by an expert since inappropriate maintenance word usually results in unnecessary costs e Ifthe pump will not be in operation for a longer period of time it should be cleaned carefully Otherwise you risk that residues remaining in the pump may harden and jam the impeller once the pump is started again 18 Operating Instructions 8 Troubleshooting Pump does not work when No voltage Test the voltage switched on Impurities in the pump Remove the impurities housing Magnetic clutch is Specific gravity and or Reduce the delivery rate use disengaged viscosity of the fluid is too a stronger magnetic clutch high and a more powerful motor Pump was switched off then The rotor should have switched on again before the stopped before the pump can rotor stopped be switched on again Motor is overhe
21. ritten werden 3 Transport and storage 3 1 Transport Das Ger t wird vom Hersteller betriebsfertig ausgeliefert Bei Transportsch den muss in jedem Fall eine Tatbestandsaufnahme durch den Transporteur durchgef hrt werden Der Transport des Ger tes muss stets fachgerecht erfolgen 3 2 Storage The pump has to be stored absolutely dry and be protected from any pollutants entering 4 Functional characteristics and accessories 4 1 General description Magnetically coupled centrifugal pumps of type RM are non self priming centrifugal pumps They operate in horizontal position and are made of plastic in monobloc design A magnetic Operating Instructions coupling connects the pump to the motor and transmits the power of the motor to the impeller The type 2U is equipped with a non ventilated motor and is insensitive to vapour The type 2D is equipped with a non ventilated 0 25 kW motor with two shaft ends A pump head of size 8 60 is mounted to each side of the motor You may use this pump as a twin pump with one driving motor to double is delivery rate to 2 x 80 l min or as a twin pump in series connection two stage to increase discharge pressure Maximum delivery head then is 16 m WC 4 2 Constructional design Housing impeller impeller magnet and rear casing are made of plastic Standard pumps are equipped with centering shafts and bearings made of oxide ceramic The rear casing hermetically seals the fluid from the amb
22. rotation of the motor by switching it on and off in immediate succession The sense of rotation must be in accordance with the arrow figuring on the pump Slip a soft material such as a paper strip into the slits of the motor skirt to determine the sense of rotation Mind the sense of rotation indicated by an arrow on the pump and verify it after installation The motor has to be protected from overload by a motor protection switch or a thermo sensor NOTE Motor protection device are available by the suppplier 6 Operation 6 1 Preparations for starting Always wear protective clothing Fill the pump housing and the suction line with water or the fluid to be delivered CAUTION Avoid any dry running of the pump 14 Operating Instructions NOTE We recommend installing dry running protection devices such as flow monitors contact manometers differential pressure switches or level controllers Tighten all screwed connections Entirely open all valves of the suction line 6 2Starting the pump Switch on the motor Check the sense of rotation Adjust the operating point by slowly opening the shut off valve of the discharge line If there is no shut off valve installed to the discharge line the operating point is automatically adjusted in accordance with the characteristic curve of the pump CAUTION Do not run the pump with the discharge line closed for a longer p
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