Pumps - Components By VOLVO PUMPS

• *Stainless steel Diffusers and Impellers * Noiseless, wear resistance *Stainless steel shaft *Low maintenance, extended pump life Ceramic and graphite mechanical seal Precisely Designed winding* Designed for high start / stop per hour (75 per hour)* Thermal-cut out relay Provides winding protection *Insulation class F To improve winding* insulation Protection IP 44 Prevents dust & Spillage of water* Improved vertical tank with pressure switch Auto ON and OFF.
• Application *Shower Panels * Apartments, Bungalows, Small resorts and Hotels * RO Plant *Garden Irrigation & Fountains *Household and commercial water supply *Heating and washing system
• Liquid temperature from 20 deg C upto 120 deg C Built-in thermal protection F class installation 80 Start / Stop per hour
• Function The Pressure Booster System consists of a multistage centrifugal pump suitably assembled with automatic pressure control (Pressure guage, Pressure switch brass NRV and Brass five way connector) and Pressure tank. The pressure Booster system is suitable where the main supply lines have low pressure and wherever boosting is required and wherever pressure need to be maintained. The pump will automatically switch ON/OFF to maintain the output pressure.

• * Stainless steel motor body * LTB 4 graded Gun metal bushes * high quality stamping

• *Optimized hydraulic design for efficient performance *Specially designed thrust bearing to withstand high axial load *T-Bolt design motor ensures rigid construction *Smooth surface finish results friction free flow of fluid *Designed for wide voltage applications *SS 304 grade stainless steel stage casings and impellers in radial flow series *SS 41 0 impeller/ Bronze impeller available in mixed flow series * Horizontal application model available

• Features Designed for under submerged condition water applications All rotating parts are dynamically balanced for longer bearing life and Vibration free smooth operation Epoxy ceramic coated in the inner parts for rust free operation Fitted with Quality Oil seal Easy for installation and no platform required Designed to withstand wide voltage fluctuations Non overloading power characteristics no fear of motor burning
• Topping up the motor Unscrew the Brass Plugs 1 and 2, fitted on top of the motor as shown in Fig. 1 below, and fill the motor with pure drinking water till water overflows from the other filling hole. Gently rock the motor to release air bubbles and further top up if necessary. Then replace the two plugs.
• The brass Plug 3 mounted on the bottom of the motor, is used for draining the water from within the motor. Ensure all three Brass Plugs are tightened to prevent leakage of water from within the motor. Check for leakages before lowering the OWS. Use prescribed pipe sizes as mentioned on the product name plate. Check the level of silt at the bottom of the well. Refer Fig. 2, shown below, for locating the OWS for operation with flooded suction
• Use the eye bolts / lifting lugs for lifting / lowering the OWS using appropriate equipment. Keep the wire ropes remains tied for lifting of the pump set for future. To prevent the motor from getting exposed during pumping, ensure the suction strainer is fitted above the level of the motor. This is done by fitting one end of a bend to the pump suction flange and the strainer to the other end of the bend, thereby ensuring that the level does not fall below the strainer.
• Water proofing the submersible motor cable - supply cable joint DOL OWS Motors are supplied with a single 3 core PVC insulated flat cable of length 3 meters. The free end of the 3 core cable of the motor needs to be connected to the supply cable from the control panel. As this joint is always nearly submerged in water, the joint needs to be water proof.
• SD OWS Motors are provided with two separate 3 core PVC insulated flat cable, each of 3 meters length. Repeat the procedure for both 3 core PVC flat cables from the motor to the two cables from the Control Panel.
• Electrical installation As far as possible, do not use multiple joints in the electrical cabling while connecting the Control Panel to the OWS. Ground the pump set using the two earth screws provided on the leg of the motor body. Ensure electrical joints, if any, are properly and adequately insulated. Connect the cable properly to the starter terminals to avoid loose connections. Factor in low voltage operation while selecting cable size.
• Checking rotation of OWS Power up the OWS and observe the discharge from the pump. Next interchange any two phase wires, power up the OWS and observe the discharge from the pump. In case the discharge is more after interchanging any two phase wires, then the impeller is rotating in the correct direction within the volute casing. If the discharge after interchanging any two phase wires is lower, then the previous phase wire connection was correct. Now revert back to the old phase wire connection.

• *Stainless steel Diffusers and Impellers * Noiseless, wear resistance *Stainless steel shaft *Low maintenance, extended pump life Ceramic and graphite mechanical seal Precisely Designed winding* Designed for high start / stop per hour (75 per hour)* Thermal-cut out relay Provides winding protection *Insulation class F To improve winding* insulation Protection IP 44 Prevents dust & Spillage of water* Improved vertical tank with pressure switch Auto ON and OFF.
• Application *Shower Panels * Apartments, Bungalows, Small resorts and Hotels * RO Plant *Garden Irrigation & Fountains *Household and commercial water supply *Heating and washing system
• Liquid temperature from 20 deg C upto 120 deg C Built-in thermal protection F class installation 80 Start / Stop per hour
• Function The Pressure Booster System consists of a multistage centrifugal pump suitably assembled with automatic pressure control (Pressure guage, Pressure switch brass NRV and Brass five way connector) and Pressure tank. The pressure Booster system is suitable where the main supply lines have low pressure and wherever boosting is required and wherever pressure need to be maintained. The pump will automatically switch ON/OFF to maintain the output pressure.