V-Flow Pump NV25-7S

Installation Instructions for V-Flow Pump NV25-7S Vertical Pump

1. Preparation:
   • Inspect the pump and motor for any visible damage during shipping. Report any damage to the carrier or dealer.
   • Ensure the installation site is level, stable, and provides adequate ventilation for motor cooling and servicing.
   • Verify that the pump model matches the system specifications and intended application.
2. Mounting the Pump:
   • Secure the pump base to a solid, flat surface to prevent vibrations during operation.
   • Align and support the suction and discharge piping to avoid excessive strain on the pump.
   • Install isolation valves on both the suction and discharge sides for easier maintenance and servicing.
3. Piping Connections:
   • Ensure piping matches the pump’s 1.5" ANSI 150# flanged connections.
   • Install proper gaskets to prevent leaks, ensuring they do not obstruct flow.
   • Remove protective covers or caps from the flanges before installation.
   • For hot water systems, include a bleed valve in the discharge line to relieve pressure during maintenance.
4. Electrical Connection:
   • Have a certified electrician verify that the electrical supply matches the motor’s specifications (2 HP).
   • Ensure proper motor wiring and confirm counterclockwise rotation when viewed from the motor’s rear.
   • If rotation is incorrect on a three-phase motor, reverse any two leads to correct it.
5. Priming the Pump:
   • Remove the fill plug and use a funnel to fill the pump casing with water.
   • Open the vent plug to allow air to escape as the pump fills with water.
   • Re-seal the vent plug and fill plug once a steady stream of water flows from the vent.
6. Initial Testing:
   • Open the suction valve fully and partially open the discharge valve.
   • Apply power to the motor and monitor for smooth operation without noise or vibration.
   • Gradually open the discharge valve to achieve desired operating conditions.
7. Safety Precautions:
   • Never operate the pump without water to avoid damage to internal components.
   • Replace coupling guards after installation to prevent injuries.
   • Ensure the pump is properly grounded and all connections are secure before starting.