Model DWU, DWXU Dominator TM Submersible Sewage Pump Operating Instructions, Installation & Maintenance Manual EBARA Fluid Handling EBARA International Corporation
Thank you for purchasing this Ebara Stainless Steel Pump. We hope you are pleased with your purchase and that our pumps will provide you with long service life and exceptional performance. To ensure satisfactory service life, there are several considerations regarding proper installation, operation and power source. Please review the recommendations outlined within the installation and operation manual.
DWU, DWXU Contents Section Page Manufacturer Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pump Identification Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Safety Information/Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical Information (Single phase) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Wiring Diagrams (Single phase) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DWU, DWXU Pump Identification Data Pump Data Description: Model: Year of manufacture: Submersible Sewage Pump DWU, DWXU see name plate on the pump (see nameplate illustration below) Note: This label shows all of the electrical data required for proper installation. CAUTION Call an electrician when in doubt. Improper installation can result in harm to people and/or damage to equipment. EBARA Fluid Handling www.pumpsebara.
DWU, DWXU Safety Information and Introduction WARNING Before handling this pump, always disconnect the power first. This pump should only be serviced by a qualified person or a factory trained person. CAUTION This instruction manual includes necessary items for installation, operation and maintenance. Read this manual carefully to ensure correct installation, operation and maintenance. Be sure to keep this instruction manual on hand for future reference.
DWU, DWXU Safety Information and Introduction (continued) Normally accepted materials are galvanized pipe, rigid plastic pipe or acceptable flexible pipe or hose. Where the discharge pipe is long, a check valve is often employed to prevent the water from flowing back into the sump when the pump turns off. If the discharge is directed into a sanitary sewer, a suitable anti-siphon device or a free flow check valve should be inserted in the line to prevent backflow into the pit.
DWU, DWXU Electrical information – Single Phase (continued) 1. Before installing or servicing your pump, BE CERTAIN pump power source is disconnected. 2. Installation and electrical wiring must adhere to state and local codes. Check appropriate community agencies, or contact local electrical and pump professionals. 3. CALL AN ELECTRICIAN WHEN IN DOUBT. Pump should be connected to a separate 15 amp circuit breaker or 15 amp fuse block.
DWU, DWXU Wiring Diagram for Automatic Pumps (Single Phase) • Output 1/2 to 1 HP (0.4kw to 0.75kw) 115V 230V • Output 11/2HP (1.1kw) 230V EBARA Fluid Handling www.pumpsebara.
DWU, DWXU Wiring Diagram for Manual Pumps (Single Phase) • Output 1/2 to 1 HP (0.4kw to 0.75kw) 115V • Output 1/2 to 1 HP (0.4kw to 0.75kw) 230V • Output 11/2HP (1.1kw) 230V • Output 2HP (1.5kw) 230V EBARA Fluid Handling www.pumpsebara.
DWU, DWXU Electrical Information – Three Phase WARNING Check that the power is locked off and disconnected before working on pump. All electric work should be performed by a qualified electrician and all national and local electrical codes must be observed. (1) Wiring a) Wire as indicated in Fig. 4 b) Loose connections will stop the pump. Make sure all electrical connections are secure.
DWU, DWXU Wiring Diagram for Manual Pumps (Three Phase) 230V 460V EBARA Fluid Handling www.pumpsebara.
DWU, DWXU Wiring Diagram Typical Wiring Diagram 1. 2. 3. 4. 5. 6. 7. 8. Run Stop Brown Blue Black Red Yellow/Green White SPECIAL NOTICE for Cord Connected Pumps Ebara Dominator pumps are not designed for and CANNOT be installed in any location classified as hazardous by the National Electric Code ANSI/NFPA 70. • Connection devices shall provide for a watertight connection to the power supply and provide adequate strain relief for the cord.
DWU, DWXU Installation Instructions Pump Installation WARNING When lifting the pump, attach an appropriate lifting cable or rope to the lifting handle before installation. Do not lift the pump by the electrical cables. Handle the cables very carefully. Excessive bending or pulling may damage the cable and molded seal, resulting in insulation failure. Protect cable ends against water intrusion. CAUTION Check rotation BEFORE installation. Correct rotation is clockwise when viewed from top of the motor.
DWU, DWXU Typical Installation with Quick Disconnect Typical Installation with Pipe EBARA Fluid Handling www.pumpsebara.
DWU, DWXU Float Switch Adjustment A Float adjustment screw B Float Switch Adjustment Float switch should be adjusted to ensure unrestricted operation. • • • • Loosen float adjustment screw. Adjust float length by sliding float cord through bracket. Minimum cord length from bracket “A” to float “B” shall be 6''. Tighten adjustment screw after adjustment. EBARA Fluid Handling www.pumpsebara.
DWU, DWXU Troubleshooting Checklist POSSIBLE CAUSES • Line circuit breaker is off, or fuse is blown or loose. • Water level in sump has not reached turn-on level as indicated in installation drawing. • Pump cord is not making contact in receptacle. • Float is stuck. It should operate freely in basin. • If all of the above are OK, consult your distributor. Pump runs but does not • Check valve is installed backwards. Arrow on valve should point in direction of flow. deliver water.
DWU, DWXU Sectional View DW(F)U, DW(F)AU Single Phase Motor Three Phase Motor DWX(F)U, DWX(F)AU Part Part Name No.
DWU, DWXU Disassembly and Assembly 1. Disassembly When disassembling pump, have a piece of cardboard or wooden board ready to place the different parts on as you work. Do not pile parts on top of each other. They should be laid out neatly in rows. The O-ring and gasket cannot be used again once they are removed. Have replacement parts ready. Disassemble in the following order, referring to the sectional view. Be sure to cut off power source before beginning disassembly.
DWU, DWXU Warranty COMMERCIAL PUMP/ PRODUCTS LIMITED WARRANTY Ebara International Corporation, Rock Hill, SC (“EIC-RH”) warrants to the original purchaser only (“Customer”) that the EIC-RH Commercial Pump/Product (“Pump”) will be free of defects in workmanship and material for a period of twelve (12) months from the date of installation or eighteen (18) months from the date of shipment by EIC-RH, whichever comes first, provided that notification of any such defect is promptly given in writing to EIC-RH.
Contact your dealer or supplier for more information about other Ebara products: EBARA Fluid Handling 1651 Cedar Line Drive • Rock Hill, SC 29730 (t) 803 327 5005 • (f) 803 327 5097 www.pumpsebara.
