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Grundfos ALPHA1 L User Manual

Grundfos ALPHA1 L
660 pages
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ALPHA1 L
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

Table of Contents

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Grundfos ALPHA1 L Specifications

General IconGeneral
Pump TypeCirculator Pump
Voltage230 V
Frequency50/60 Hz
Liquid Temperature Range2°C to 110°C
Protection ClassIP42
Max Operating Pressure10 bar
Insulation ClassF
Connection SizeG 1 1/2
Installation Length180 mm
Energy Efficiency Index (EEI)≤ 0.20

Summary

General Information

Hazard Statements

Explains safety symbols (DANGER, WARNING, CAUTION) and their meaning.

Notes

Highlights important notes and provides tips for easier operation.

Receiving the Product

Inspecting the Product

Instructions for checking the product upon delivery and verifying its condition.

Scope of Delivery

Lists the items included in the product package, such as pump, plug, and gaskets.

Installing the Product

Mechanical Installation

Details the steps for physically mounting the pump, including orientation and fitting.

Pump Positions

Specifies acceptable and unacceptable mounting positions for the pump.

Control Box Positions

Describes how to position the pump's control box for optimal access and operation.

Electrical Connection

Guides on how to safely connect the pump to the electrical power supply.

Insulating the Pump Housing

Explains how to reduce heat loss by insulating the pump and pipe with shells.

Starting Up the Product

Before Startup

Ensures system is filled and vented before pump operation.

Starting Up the Pump

Procedure for turning on the pump and initial operation.

Venting the Pump

Steps to remove trapped air pockets from the pump and system for quiet operation.

Product Introduction

Product Description

Overview of the ALPHA1 L pump's features and benefits for heating systems.

Applications

Lists suitable systems and scenarios for using the ALPHA1 L circulator pump.

Pumped Liquids

Specifies suitable liquids and precautions for handling flammable or corrosive fluids.

Identification

Nameplate

Details the information found on the pump's nameplate for identification.

Accessories

Unions and Valve Kits

Information on available unions and valve kits for pump installation.

Insulating Shells

Details on optional insulating shells for reducing heat loss.

Cables and Plugs

Power Supply Connection

Information on the installer plug and power cable adapters.

Control Signal Connection

Details on connecting the control signal cable via a mini superseal plug.

Control Functions

Operating Panel

Description of the pump's operating panel, buttons, and LED indicators.

Control Modes

Overview of different pump control modes like constant curve and radiator heating.

Control Signal

Explains how the pump is controlled by a digital low-voltage pulse-width modulation (PWM) signal.

PWM Input Signal Profile A (Heating)

Details the PWM input signal behavior for heating applications.

Pump Performance

Pump Setting in Relation to Pump Performance

Illustrates how pump settings affect performance curves.

Setting the Product

Setting the Product

Guide to adjusting pump settings using the operating panel button.

Setting the PWM Input Signal

Instructions for enabling external control mode via PWM signal.

Servicing the Product

Dismantling the Product

Steps for safely removing the pump from the system.

Dismantling the Plug

Procedure for safely disconnecting the power supply plug from the pump.

Fault Finding the Product

Fault Finding Table

A table listing common alarms, their status, and solutions for troubleshooting.

Deblocking the Shaft

Instructions on how to unblock a seized pump shaft using the deblocking device.

Technical Data

Operating Conditions

Specifies operating parameters like sound pressure, humidity, and system pressure.

Reduced Supply Voltage

Describes pump behavior and alarms under reduced voltage conditions.

Dimensions, ALPHA1 L XX-40, XX-60, 15-65

Provides detailed physical dimensions for specific ALPHA1 L pump models.

Dimensions, ALPHA1 L 25-65

Provides detailed physical dimensions for the ALPHA1 L 25-65 pump model.

Performance Curves

Guide to Performance Curves

Explains how to interpret pump performance curves and power curves.

Curve Conditions

Outlines the conditions and assumptions under which the performance curves are valid.

Performance Curves, ALPHA1 L XX-40

Graphical representation of head, flow, and power for ALPHA1 L XX-40.

Performance Curves, ALPHA1 L XX-60

Graphical representation of head, flow, and power for ALPHA1 L XX-60.

Performance Curves, ALPHA1 L XX-65

Graphical representation of head, flow, and power for ALPHA1 L XX-65.

Performance Curves, ALPHA1 L XX-80

Graphical representation of head, flow, and power for ALPHA1 L XX-80.

Disposing of the Product

Disposing of the Product

Guidelines for environmentally sound disposal of the pump and its components.

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