Related Manuals for Grundfos UP 43-110
Summarization of Contents
Introduction and Safety
Safety Warning
Proper grounding of the pump to the power supply's grounding terminal is required for safe installation and operation.
Electrical Work Safety
All electrical work should be performed by a qualified electrician in accordance with the National Electrical Code.
Pre-Installation Checklist
Confirm Correct Pump
Read the pump nameplate to make sure it is the one you ordered.
Check Pump Condition
Examine the pump for any damage that may have occurred during shipping.
Verify Electrical Requirements
Verify the power supply voltage, phase and frequency match the pump motor.
Installation Procedures
Piping Considerations
Thoroughly clean and flush all dirt and sediment from the system before attempting to install the pump.
Connect the Pump
Install the pump into the piping system.
Starting the Pump
Vent the Piping System
Never operate the pump dry; the system must first be filled with liquid and vented.
Voltage Selection
Never make any connections in the pump terminal box unless the power supply has been switched off.
Troubleshooting
Fault Finding Chart
Provides a chart to diagnose and remedy common pump faults.
Preliminary Checks
Check supply voltage, ensuring it is within 10% of the nameplate voltage.
Current Measurement
Measure current draw using an ammeter and compare to nameplate information.
Winding Resistance
Insulation Resistance (Lead-to-Ground)
Check insulation resistance using a megohmmeter to ensure it exceeds 1,000,000 ohms.
Winding Resistance (Line-to-Line)
Check motor winding resistance using a megohmmeter and compare to chart.
Winding Resistance Chart
Provides resistance values for different pump types, voltages, and windings.
Replacing Components
Removing the Pump Head
Instructions for safely disconnecting and removing the pump head from the housing.
Fitting the Pump Head
Steps for correctly installing the new pump head and ensuring the motor shaft turns freely.
Replacing Terminal Box or Capacitor
Guidance on replacing the terminal box or capacitor, ensuring proper connections.
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