Centrifugal Pump User Manual
Contents
1. A full certificate of conformity can be obtained upon request 1 Index Equipment Variants and Options Safety Description of Main Features Installation Operation Maintenance Fault Finding After use storage Disposal Warranty Appendices Water Pump service parts list Slurry Pump service parts list Fittings and Accessories A Series Water Pump service parts list Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 Section 11 Appendix 1 Appendix 2 Appendix 3 Appendix 4 Appendix 3 Fittings and Accessories Illustration Part Description Part Number 2 Part number 3 inch Quantity Number inch pump pump required 1 Suction hose Kanaflex 12 CD20 12 CD30 Per metre Delivery hose Kanaflex 12 CD20 12 CD30 Per metre Delivery hose Layflat P3 2LFB P48LFB Per metre 2 Basket foot filter 9907 733 01 9907 757 90 Each water pump 3 Hose barb HB 200P 2in NPT HB 300P 3in NPT Each 4 Basket foot filter 9907 46286 00 9907 46287 00 Each 5 90 Male adapter 200F 90 9901 SL300 90 Each 6 Hose coupler 200CP 300CP Each T Male adapter 200FP 300FP Each 8 Sponge gasket 200G 300G Each Appendix 3 Fittings and accessories 2 Equipment Variants and Options Special Note A amp S Series Self Priming Centrifugal Pumps are chemically resistant for general water service waste treatment salt water and many industrial chemicals Moulded2. Replacing pump seals slurry pump T series Refer to the illustration in appendix 2 to assist with re assembly Ensure that the pump body is washed out and then drained Remove the quick release metal strap holding the two parts of the pump body Draw the loosened pump body towards you away from the pump backing plate Remove the large o ring Remove the black wear plate This will expose the volute and the impeller 7 3 5 7 3 6 7 3 7 7 3 8 7 3 9 Remove the impeller by unscrewing the central screw Inserting a M10 bolt into the central hole Turn the screw clockwise to draw the impeller off the drive shaft Remove the volute by unscrewing 2 x M6 screws 4 screws in 3 inch pump Undo and remove the four screws holding the pump backing plate Pull the plate forwards over the drive shaft Remove the drive key first Remove the static seal and the o ring from the backing plate and the rotating seal from the back of the impeller On re assembly repeat steps 7 3 8 to 7 3 2 in reverse order 7 3 10 Take care not to damage the faces of the seal kit and the oil seal upon reassembly 7 3 11 Shim the impeller until the back of the impeller and the front of the volute are just clear The shims are inserted into the back of the impeller 7 3 12 The wear plate is assembled onto the lugs on the front of the volute with the indicator arrows pointing upwards Check for free movement of the pump by turning the pump by
3. 16 Shaft key 46339 46278 1 17 Volute screw 462269 462269 4 18 Impeller 46229 80 46214 80 1 19 O ring 46291 71 46290 71 1 20 Washer 46341 1 21 Impeller screw 715 10 46309 10 1 22 Wear Plate 46225 91 46205 91 1 23 Suction gasket 46206 71 46206 71 1 24 Check valve retainer screw 1348 10 1348 10 2 25 Check valve retainer 46344 30 46344 30 1 26 Check valve 46217 71 46217 71 1 27 O ring Body 46304 71 46304 71 1 28 Pump body assembly 46252 31A 46207 31B 1 Includes items 24 25 amp 26 29 O ring drain plug 1009 71 1009 71 1 30 Drain plug 723 30 723 30 1 31 Body clamp 46305 10 46305 10 1 Appendix 2 Slurry pump body assembly T Series Fig 2 Water Pumps Bare Pump and Motor Assemblies Part No Engine Type fi ea BHP aio Max R pa y es 200PDL Lombardini 2 6 8 871 2 5 Diesel 42 1 9 207PDL Lombardini 2 6 8 757 4 Diesel 42 1 2 300PDL Lombardini 3 6 8 1060 2 5 Diesel 44 1 8 200PPV 5 Honda 2 5 5 871 25 Petrol 19 1 5 200PPVDL Lombardini 2 6 8 871 2 5 Diesel 42 1 5 207P 3 Honda 2 4 568 3 Petrol 17 1 2 200P 5 Honda 2 6 5 871 2 5 Petrol 19 1 9 207P 5 Honda 2 5 5 757 4 Petrol 19 1 2 300P 5 Honda 3 6 5 1060 2 5 Petrol 20 1 8 Fig 3 Electrically Driven Water Pumps Part No Volts Ski BHP ion Max ee ae pes 207P ES3 240 2 3 504 2 4 23 1 3 200P ES3 240 2 3 756 1 5 23 1 8 207P ET3 415 2 3 504 2 4 23 1 3 200P ET3 415 2 3 756 15 23 1 8
4. Fae Cee Cree Ce Ce Cs Cs Ces Crees Cs E Cs Ces Ces Ce Appendix 4 A Series Water Pump Service Parts List Dual Pumps Ltd Self Priming Centrifugal Pumps amp Motor Assemblies Assembly and Operating Instructions These instructions should be kept with the respective pump unit at all times and referred to as often as necessary This manual has been compiled to give all of the necessary information to allow for the safe installation and operation of the Dual Pumps Ltd range of Centrifugal Pumps and Motor Assemblies Following these simple instructions will ensure operator safety and prolong the life of the equipment This manual and any other literature supplied should be read thoroughly before attempting to operate any supplied unit Pay particular attention to any instructions given relating to your personal safety or to the safety of others who may be in the general area of the operating unit also specific instructions relating to the starting and stopping of petrol and diesel engines Our policy is to improve our product continuously and we therefore reserve the right to change specifications models or designs without notice or obligation EC DECLARATION OF CONFORMITY Dual Pumps Ltd Unit 8 Hudson Road Saxby Road Ind Est Melton Mowbray Leicestershire LE13 1BS Declares that this equipment conforms to the following directives 98 37EC 73 23 EEC 2000 14 EC 2004 108 EEC Name S Travis Position Service Manager
5. 6 3 2 After use drain and clean internally and externally the pump body and the attaching hoses In frosty weather additional protection should be given to the pump and its hoses to protect them from frost damage 7 0 Maintenance 7 1 Routine maintenance Maintenance activity Frequency Inspect top up oil levels Each and every a Engine b Pump seal lubricator T series only use Each and every Clean water inlet and suction line filters se damage and air tightness use Inspect the suction and pressure hoses and their respective connections for Each and every Pneumatic tyres where fitted Check for wear damage and abrasion Check tyre pressures inflate to 0 7 bar 10 PSI ENEEK WESKI Change as Change engine oil only replace the oil with one recommended by the recommended manufacturer See supplementary literature by the engines manufacturer 7 2 Replacing pump seals water pump S series amp A series NB Refer to the illustrations in appendix 1 amp 4 to assist with re assembly 7 2 1 Ensure that the pump body is washed out and drained 7 2 2 Unscrew and remove the body screws 22 S Series 20 A Series and split the pump body by pulling the pump body forwards 7 2 3 Next remove the volute by unscrewing and removing the self tapping screws 14 15 S Series 16 A Series Neither this warranty or any implied warranty apply to damage caused by any of the following 1 Freight d
6. 706 impeller polyester pump 9907 702 30 1 Volute Ribbed for 975 impeller polyester pump 9907 977 30 1 Volute Ribbed for 975 impeller polypropylene pump 9907 977 60 1 14 Volute screw self tapping stainless steel 9907 725 10 2 15 Volute top screw for 977 volute 9907 997 10 1 Volute top screw for 702 volute 9907 771 10 1 Fig 4 Description of main features The drive engine illustrated in fig 4 is a petrol version for diesel engines refer to the engine manufacturers handbook Electric motors refer to wiring diagram in the motor terminal box E c Fig 4 Description of main features List of main features 1 Typical transport frame 10 Engine speed control NB Wheels are fitted to some models 2 Drive engine 11 Engine cold start 3 Pump assembly 12 Pull starter 4 Inlet port suction 13 Fuel tank filler 5 Outlet port pressure Slurry pump see detail drawing 6 Drain plug 14 Mechanical seal lubricator 7 Priming port 15 Drain plug 8 Engine oil dipstick 16 Removable body clamp 9 Engine oil drain plug 5 0 5 1 5 2 5 3 5 4 5 5 5 6 5 7 Installation Fill the engine with the necessary oil and fuel Refer to engine manufacturers handbook for recommended oils and fuels Place the battery in the battery box and connect the power leads Electric start models only Screw the Inlet and Outlet Quick Release Couplings into their respective ports Do not over tighten th
7. from tough glass reinforced thermoplastics polyester and or polypropylene to resist corrosion and chemical attack These pumps feature as standard type 316 Stainless Steel internal hardware and carbon ceramic self lubricating mechanical shaft seals Also available with a choice of seals o rings and gaskets made from Viton EPDM or Buna N All pumps include a built in check valve and double flush volute to keep pumps free of settled solids All units are fitted as standard with type 304 stainless steel clips and fasteners Manufactured with a choice of either 2 or 3 port diameters these pumps handle a wide range of flow and head conditions T Series Self Priming Centrifugal Pumps are lightweight chemically resistant pumps for general service on water salt water and mildly corrosive liquids containing solids They will pass a solid up to 1 3 the diameter of the suction port T Pumps feature a tough non metallic impeller steel volute and wear plate with a non metallic coating type 316 stainless steel body clamp and a housing made from rugged glass reinforced polyester The pumps also feature a pressurised oil lubrication system which protects the hard silicone carbide shaft seal o rings and gaskets are made from Buna N All pumps feature a built in check valve easy servicing and a self cleaning double flush volute to keep pumps free of settled solids Safety Warning Verify the chemical compatibility of the liquid you wish to pu
8. months from the date of purchase by the original purchaser six 6 months for the equipment on hire or rental There is no implied warranty of fitness for a particular purpose or merchantability when this product is put to rental use No person including any dealer or representative of Dual Pumps Ltd is authorised to make any representations or warranty concerning Dual Pumps Ltd products on behalf of Dual Pumps Ltd or to assume for Dual Pumps Ltd the obligations contained in this warranty Dual Pumps Ltd reserves the right to make changes in design and other changes and improvements upon its products without imposing and obligations on itself to install the same in its existing products or products then in the process of manufacture 9 0 After use storage 9 1 Disconnect the suction and pressure hoses rinsing clean and allow to dry 9 2 Flush the pump body with clean water drain by removing the drain plugs Replace plugs when completely drained Remove dirt from exterior of pump 9 3 Ensure the pump is clean and dry before storage store in a dry frost proof place 10 0 Disposal 10 1 Atthe end ofits useful life this pump unit must be disposed of in a responsible manner following any specific requirements of the local authority in which the pump unit is located 10 2 Drain any unused fuel from the fuel tank and the residual engine and lubricating oils Dispose of these oils in a manner which is acceptable to your local authority Do
9. not dispose of by allowing them to drain into a sewer or watercourse or pollute land 10 3 Remove the plastic components dispose of by recycling or in general refuse whichever is the locally approved manner 10 4 Metallic parts should be sent for recycling via an approved metal merchant 10 5 Any fitted tyres should be removed from their rims and sent for recycling via an approved contractor 11 0 Warranty Dual Pumps Ltd as suppliers warrants to the original purchaser each new unit or other product supplied from its factory for a period of twelve 12 months from the date of shipment from the factory six 6 months for equipment on hire or rental to be free from defects in material and workmanship under normal use and service Normal use and service means not to exceed recommendations on maximum speeds pressures and temperatures or handling fluids which are not compatible as noted in the applicable Dual Pumps Ltd catalogue technical literature and instructions This warranty shall not apply to any pump or other product which has been repaired or altered to adversely affect the performance or reliability of the pump or product Tools or hoses are not covered by this warranty due to the adverse conditions of their use 7 2 4 7 2 5 7 2 6 7 2 7 7 2 8 7 2 9 7 3 7 3 1 7 3 2 7 3 3 7 3 4 Unscrew the central impeller screw and pull the impeller off of its drive shaft In some older installations it my n
10. parts list Illustration Description Part Quantity Number Number Required 1 Pump back plate bracket Polyester black 9907 703 30 1 Pump back plate bracket Polypropylene grey 9907 703 40 1 2 Plug Viton pumps only 58 1750 90 4 3 Bracket screw 5 16 x 1 25 stainless steel 9907 715 10 4 Bracket screw 5 16 x 1 5 st steel pedestal mount 9907 728 10 4 4 O Ring Buna 9907 717 71 4 O ring EPDM 9907 717 72 4 O ring Viton 9907 717 73 4 5 O Ring shaft seal Buna 9907 976 71 1 O Ring shaft seal EPDM 9907 976 72 1 O Ring shaft seal Viton 9907 976 73 1 6 Shaft seal Buna 9907 714 11 1 Shaft seal EPDM 9907 714 12 1 Shaft seal Viton 9907 714 14 1 NB Item 5 is included in the shaft seal kit item 6 7 Shaft impeller key mild steel 9907 0718 00 1 Shaft impeller key stainless steel 9907 0718 10 1 8 O ring segment Buna 9907 754 71 1 O ring segment EPDM 9907 754 72 1 O ring segment Viton 9907 754 73 1 9 O ring body Buna 9907 719 71 1 O ring body EPDM 9907 719 72 1 O ring body Viton 9907 719 73 1 10 Impeller 704 Polyester black 9907 704 30 1 Impeller 706 Polyester black 9907 706 40 1 Impeller 975 Polyester black 9907 975 30 1 Impeller 975 Polypropylene grey 9907 975 40 1 11 O ring Buna 9907 717 71 1 O ring EPDM 9907 717 72 1 O ring Viton 9907 717 73 1 12 Impeller screw stainless steel 9907 716 10 1 13 Volute Flat for 704 amp
11. 1 Pump body 3 inch BSP Polyester black 9907 877 30B 1 18 Drain plug Polyester black 9907 723 30 1 Drain plug Polypropylene grey 9907 723 40 i 19 O ring Buna 9907 1009 71 1 O ring EPDM 9907 1009 72 1 O ring Viton 9907 1009 73 1 20 Filler plug Polyester black 9907 722 30 1 Filler plug Polypropylene grey B9907 722 40 1 21 O ring Buna 9907 765 71 1 O ring EPDM 9907 765 72 1 O ring Viton 9907 765 73 1 22 Body bolt Polypropylene pump black st steel 9907 720 10 10 Body bolt Polyester pump grey zinc plated 9907 720 10 23 Body nut stainless steel 9907 721 10 10 Body nut zinc plated 9907 721 10 Impeller shim 0 007 9907 788 11 As Req Impeller shim 0 015 9907 788 12 As Req Impeller shim 0 030 9907 788 13 As Req Polyester pump black body EPDM seals as standard Buna amp Viton options available Polypropylene pump grey body Viton seals as standard Buna amp EPDM options available Repair kits Part Number Description 9907 KT001 Pedestal conversion kit n a 9907 KT014 Complete seal kit Buna Included components 9907 KT005 Complete seal kit EPDM 4 5 6 8 9 11 16 19 20 9907 KT017 Complete seal kit Viton 9907 KT024 Pump repair kit Buna 4 5 6 7 8 11 12 14 15 19 21 3x shims slinger ring shaft sleeve shaft gasket 9907 KT025 Pump repair kit EPDM 9907 KT026 Pump repair kit Viton Appendix 1 Water pump service
12. 200P ET5 415 2 5 5 756 1 5 31 1 8 207P ET5 415 2 5 5 725 2 5 31 13 300P ET5 415 3 5 5 880 15 32 1 8 200PP ET5 415 2 5 5 756 1 5 31 1 5 Care should be taken when moving or lifting pump assemblies they have uneven centres of gravity and may topple when handled 3 0 General Safety 3 1 Centrifugal pump units should only be used by fully trained competent persons They should not be used by untrained or inexperienced users Follow the instructions in this manual and any other supplementary you may be given 3 2 Pump units should never be set in places where they could become a danger to the general public They should be supervised or securely guarded at all times 3 3 Centrifugal pump units should never be used for pumping incompatible chemicals flammable or explosive liquids The pumping of incompatible liquids can lead to fire or explosion resulting in death or serious injury 3 4 3 5 3 6 3 7 3 8 3 9 Never operate pump units in a confined space or an explosive atmosphere the charging and discharging of fuel tanks is forbidden unless the area is well ventilated Always site pumps on firm level ground Vibration caused during the pumping operation may cause the pump to move Assess any possible danger associated with this and if necessary tether the unit to a solid post Never operate any equipment with the guards removed Ensure that the pumps drive motor is isolated before working on the pump uni
13. Faulty mechanical seal Leak in the suction hose Leak in the suction valve Leak in the suction connection Clean Replace seals see section 7 Repair or replace Repair or replace Repair or replace Excessive noise while the pump is in operation Pump not secured to firm foundation Piping not supported to relieve any strain on the pump assembly Restricted suction line Cavitation Secure properly Support piping Clean and or replace A Reduce pump speed B Increase the size of the inlet C Viscosity of pumped material too high
14. Steel for Pumps close coupled to engines and cast pedestal mounted O RING Screw Plug BUNA N O RING Screw Plug EPDM standard O RING Screw Plug VITON PLUG Screw Black Polyester KEY 3 16 Sq x 15 16 Long Steel VOLUTE Rear Black Polyester O RING Segment BUNA N O RING Segment EPDM standard O RING Segment VITON IMPELLER Black Polyester O RING Screw BUNA N O RING Screw EPDM standard O RING Screw VITON SCREW Impeller 5 16 24 x 75 Long Stainless Steel SCREW Volute 10 x 75 Stainless Steel O RING Drain Plug BUNA N O RING Drain Plug EPDM standard O RING Drain Plug VITON PLUG Drain Black Polyester BODY 2 NPT Black Polyester BODY 2 BSP Black Polyester SCREW Body Plated Steel 1 4 20 x 2 3 8 SHIM Impeller 006 Stainless Steel SHIM Impeller 015 Stainless Steel SHIM Impeller 030 Stainless Steel SHAFT SEAL BUNA N SHAFT SEAL EPDM standard SHAFT SEAL VITON O RING Body BUNA N O RING Body EPDM standard O RING Body VITON O RING Shaft Seal BUNA N O RING Shaft Seal EPDM standard O RING Shaft Seal VITON CHECK VALVE BUNA N CHECK VALVE EPDM standard CHECK VALVE VITON O RING Rear Volute BUNA N O RING Rear Volute EPDM standard O RING Rear Volute VITON VOLUTE Front Flat Black Polyester QTY O ae ay ee ce ce Beane anys onogaeaae Baa ai A RA A A 10 as required as required as required 1
15. amage 2 Frost or freezing damage 3 Damage caused by parts and or accessories or components not obtained from or approved by Dual Pumps Ltd 4 Any consequential or incidental damage arising from the use of any pump or other products supplied by Dual Pumps Ltd 5 Damage caused by misapplication and or misuse The normal wear of moving parts or components affected by moving parts The liability of Dual Pumps Ltd under the foregoing warranty is limited to the repair or replacement at Dual Pumps Ltd option without charge for labour mileage costs or materials of any parts upon return of the entire pump or other product or of the particular part to the Dual Pumps Ltd factory within the warranty period at the sole expense of the purchaser which part shall upon examination appear to Dual Pumps Ltd satisfaction to have been defective in material or workmanship The liability of Dual Pumps Ltd under any theory or recovery except any express warranty where the remedy is set forth in the above paragraph for loss harm or damage shall be limited to the lesser of the actual cost harm or damage or the purchase price of the involved pump or other product when sold by Dual Pumps Ltd to its customers Dual Pumps Ltd expressly warrants its pumps and other products as above stated There are no other express warranties Any implied warranties including implied warranty of merchantability or of fitness for a particular purpose are limited to twelve 12
16. dual pumps Unit 8 Hudson Road Saxby Road Ind Est Melton Mowbray Leicestershire LE13 1BS Telephone 44 0 1664 567226 Fax 44 0 1664 410127 E mail info dualpumps co uk www dualpumps co uk Self Priming Centrifugal Pumps amp Motor Assemblies Assembly amp Operating Instructions Model Serial No Engine No Year of Manufacture CE 793 1100 Appendix 4 A Series Water Pump Service Parts List NO 3 No A 10 11 12 13 14 15 16 17 18 19 20 21 22 25 amp 26 23 26 27 28 29 PART NUMBER 9907 722 30B 9907 765 71 9907 765 72 9907 765 73 9907 1262 30B 9907 721 907 715 10 9907 1245 71 9907 1245 72 9907 1245 73 9907 1233 30 9907 718 9907 1302 30 9907 1246 71 9907 1246 72 9907 1246 73 9907 683 30 9907 717 71 9907 717 72 9907 717 73 9907 716 10 9907 1348 10 9907 1009 71 9907 1009 72 9907 1009 73 9907 723 30 9907 1261 30B 9907 1873 30B 9907 720 9907 778 11 9907 778 12 9907 778 13 9907 714 11 9907 714 12 9907 714 14 9907 1926 71 9907 1926 72 9907 1926 73 9907 976 71 9907 976 72 9907 976 73 9907 1872 71 9907 1872 72 9907 1872 73 9907 1203 71 9907 1203 72 9907 1203 73 9907 1303 30 DESCRIPTION PLUG Filler Black Polyester O RING Filler Plug BUNA N O RING Filler Plug EPDM standard O RING Filler Plug VITON BRACKET Black Polyester NUT Plated Steel 1 4 20 SCREW 5 16 24 x 1 25 Long Stainless
17. e screw thread Fittings that are inserted into plastic pump bodies should be hand tight only When pumps are installed into permanent situations using solid pipe work use at least 0 3m of flexible pipe on the suction and discharge ports to reduce the possibility of vibration damage Long suction and delivery hoses should be supported to reduce possible stress damage to the pump body Fig 5 Protect hoses laid across roadways If flexible hoses are to be laid across roadways ensure they are protected by ramps planks etc see fig 5 Vehicles running across hoses not only damage the hose but also will send shock waves into the pump body causing mechanical damage or over pressurisation Electrically driven pumps should only be installed by a qualified Electrical Engineer Electric motors refer to the wiring diagram in the motor terminal box Ensure the motor is wired for anti clockwise rotation as you look at the pump impeller or inlet port Appendix 1 Water pump body assembly S Series This warranty does not affect any statutory rights that you may have Procedure for claiming under this warranty The claimant must despatch the unit product or part at his own expense to the Dual Pumps Ltd factory with a full detailed report for inspection upon receipt Dual Pumps Ltd will inspect and decide whether the unit product or part is in fact a genuine warranty claim Upon this decision the pump product or part will be replaced e
18. hand Useful hints and points to note Strip the pump completely before ordering any new parts replace any damaged parts along with the worn You are advised to always replace the o ring on the impeller and the screws holding the pump backing Use Loctite or a similar product on the pump backing plate screws and the impeller screw 8 0 Fault Finding Symptom Probable causes Corrective actions Pump will not prime or retain prime after operation Air leak in suction line Clogged valve or strainer Replace or repair Clean or replace Flow rate is low Incorrect speed Inlet outlet pipes are clogged or damaged Clogged or worn impeller Outlet pipe is restricted or undersized High pressure in the outlet pipe Check drive speed Clean or replace Clean or replace Flush out piping and or replace Check and reduce pressure Pump runs but there is no fluid Faulty suction pipe Pump is located too far from the liquid being pumped Inlet outlet valves closed Clogged inlet strainer Valves clogged Discharge height is too great Suction lift is too great Replace Relocate Clean or replace Clean or replace Clean or replace Reduce the height Lower the pump Liquid drips from the point where the drive shaft enters the pump backing plate when the pump is full of liquid Damaged seal assembly Replace seals see section 7 The pump starts and stops pumping Fouled impeller
19. ither free of charge under this warranty or despatched and charged to the original customer together with a full report should it be found not to be covered by this warranty Warranty claimed items if required urgently will be despatched to the customer and charged for on the receipt of the claimed defective item Dual Pumps Ltd will decide whether a claim is valid and if so will issue a credit for the item Should Dual Pumps Ltd find the claimed item to be out of warranty declarations the said charge will stand and be paid for by the customer as normal The copyright of this manual belongs to Dual Pumps Ltd and must not be copied or reproduced without the express permission of the company 6 0 Operation 6 1 Preparing to pump 6 1 1 Please ensure that the pump you have selected is suitable for the purpose for which it is to be used Check the maximum head operating pressure of the pump selected and the liquid type against a suitable table of specific gravities If you have any doubts about the suitability of the pump for the liquid to be pumped please seek further advice WARNING DO NOT PUMP FLAMMABLE OR EXPLOSIVE LIQUIDS 6 1 2 Check the oil levels on the engine and that the shaft seal lubrication system is filled with oil T series slurry pumps only 6 1 3 Before starting the pump drive fill the pump body with clean water Avoid running a dry pump for prolonged periods Dry seals will fail and the pump will then leak 6 1 4 Make su
20. mp with the materials your pump is made from If you are unsure of the compatibility please contact your local dealer or the service department of Dual Pumps Ltd Do not use a pump that is chemically incompatible with the liquid you intend to pump Material failures in pumps caused by chemical incompatibility can cause incidents which in turn could lead to serious personal injury or even death Such incidents can also cause serious environmental damage This manual deals specifically with the A S and T type variants of the Dual Pumps Ltd product range Power input Pump types Transport frame Petrol and Diesel engines 4 BHP 8 BHP Electrical drives 240 415 volts Centrifugal 2 inch and 3 inch ports 23 36 metres max head Pumps are housed in rigid steel frames in either static or wheeled options NB Pumps supplied as bare motor and pump assemblies have no Transport frame Fig 1 Centrifugal Pumps A S and T series Max z SPL GSPL Model No Drive inca Hse Head pes Daan pimo rag LwA LwA Group P Metre g dB dB Petro DPFA200 4 bhp 2 604 23 1 0 19 495x345x460 101 111 1 A Petro DPFE3 2 604 23 1 0 20 576x520x476 100 111 1 Q 3 5 bhp Petro DPF24P 4 bhp 2 568 30 1 3 25 576x520x476 98 111 1 B Petro DPF25P 2 870 25 1 8 25 576x520x476 107 111 1 C 5 5 bhp Petro DPF26P 2 757 36 1 2 25 576x520x476 107 111 1 C 5 5 bhp Pe
21. ot be possible to remove the impeller without damaging it Remove the bracket screws 3 S Series 7 ASeries In grey polypropylene pumps these are covered by plastic sealing plugs which will require drilling out Remove the pump backing plate and gently drift out the old static seal Take care not to damage the backing plate or when the new seal is fitted a leak free installation may not be possible and a new backing plate may be required Refit the new static seal Ensure the o ring is fitted onto the steel cup Use a hollow drift a socket is suitable that goes over the ceramic face and rests on the steel lip Assemble the rotating part of the seal into the back of the impeller Press the seal in gently by hand do not use excessive force or any tool which could cause damage Check that the face of the seal is smooth should it have a recess remove the rubber boot and reverse the seal Do not fit a seal that shows any sign of damage Damaged seals will leak Reassemble the pump by following steps 7 2 6 to 7 2 2 in reverse order Do not forget to insert the drive key Useful hints and points to note Strip the pump completely before ordering any new parts replace any damaged parts along with worn You are advised to always replace the o ring on the impeller and the screws holding the pump backing plate together with the plastic sealing caps Use Loctite or a similar product on the pump backing plate screws and the impeller screw
22. re that all of the hose connections are airtight Air ingress on the suction port hose will make the pump difficult to prime and will reduce the pumping efficiency 6 1 5 Always locate the pump as close as possible to the liquid being pumped this will keep the suction hose as short as possible Short hoses will improve the efficiency of the pump Ensure that the ground under the pump is firm and level and that the pump cannot move during the pumping operation 6 1 6 When sucking liquid from a ditch or a pit always use a Suction Filter Tie the filter so it does not touch the muddy bottom or place the filter on a pile of large clean stones fig 6 Alternatively it can be tied inside a large clean bucket fig 7 Both methods will protect the pump from unnecessary damage due to the ingress of stones etc Fig 7 Protecting the suction filter from unnecessary debris Fig 6 Protecting the suction filter from unnecessary debris 6 2 Pumping 6 2 1 Start the drive motor Refer to the accompanying literature which relates to the specific type of drive motor fitted 6 2 2 Open all suction and delivery valves The unit should now be pumping as required If you experience any problem in the pumping operation refer to section 8 Fault Finding 6 3 General 6 3 1 Do not run the pump for prolonged periods with the delivery line closed or restricted this will cause the pumped liquid to overheat damaging the pump and in extreme cases explosion
23. t Petrol and diesel engines should be immobilised so they can not start Electric motors should be isolated by removing fuses Only competent authorised persons should be allowed to work on electrical installations The unit should be declared safe before proceeding with any required service Do not apply any heat to a Pump and Motor installation The pump body should not be subjected to any internal pressure greater than 4 5 bar 65 psi Over pressurisation may be caused by pump shaft speeds of more than 3600 rpm the quick closing of discharge valves running over discharge hoses flooded suctions with a high positive pressure or the pumping of liquids with a specific gravity SG greater than recommended see figs 1 2 and 3 3 10 Protective clothing Operators and assistants should assess the local hazards associated with the liquid being pumped The recommended protective clothing as prescribed by COSHH and any other method of hazard analysis should by worn at all times during the installation pumping and servicing operations Illustration Description Part Quantity Number Number Required 16 Check valve Buna 9907 705 71 1 Check valve EPDM 9907 705 72 1 Check valve Viton 9907 705 73 1 17 Pump body 2 inch Polyester black 9907 1002 30 1 Pump body 2 inch BSP Polyester black 9907 784 30 1 Pump body 2 inch Polypropylene grey B9907 1002 40 1 Pump body 3 inch Polyester black 9907 755 30
24. tro DPF35P 3 984 25 1 8 27 576x520x476 107 111 1 C 5 5 bhp Diesel DPF25D 2 870 25 1 8 50 660x445x560 109 115 2 J 6 8 bhp Diesel DPF26D 2 757 36 1 2 50 660x445x560 109 115 2 J 6 8 bhp Diesel DPF35D 3 984 25 1 8 50 660x445x560 109 115 2 J 6 8 bhp Petrol DPF2TP 2 795 27 39 650x445x660 107 111 1 C 5 5 bhp Petrol DPF3TP 8 bhp 3 1362 24 65 1060x620x650 105 111 1 E Diesel DPF2TD 2 795 27 71 1060x620x650 109 115 2 J 6 8 bhp Diesel DPF3TD 6 8 bhp 3 1362 24 78 1060x620x650 109 115 2 J SPL Sound Power Level on equipment representative of this type GSPL Guaranteed Sound Power Level for this equipment Appendix 2 Slurry pump service parts list Illustration Part Part Number Part number Quantity Number Description 2 inch pump 3 inch pump required 1 Filler plug oil lube 9907 722 30A 9907 722 30A 1 2 Oring 765 71 765 71 2 3 Lube retainer 9907 46294 30 9907 46294 30 1 4 Tube 9907 46215 71 9907 46215 71 1 5 Filler plug water 9907 722 30B 9907 722 30B 1 6 Pump back plate assembly 46218 31 46218 31B 1 bracket Includes items 3 amp 4 7 O ring 717 71 46303 71 4 8 Washer diesel only 9919 3005 9919 3005 4 9 Screw Petrol 715 10 715 10 4 Screw Diesel 9919 6001 9919 6001 4 10 Oil lip seal 46314 11 46313 11 1 11 O ring shaft seal 976 71 46307 71 1 12 Mechanical seal set 46250 11 46251 11 1 13 O ring Volute 1203 71 46292 71 1 14 Volute 46224 80 46204 80 1 15 Impeller shim 778 12 46338 10 As reqd
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