EasyManua.ls Logo

Grundfos ALPHA1 L Series User Manual

Grundfos ALPHA1 L Series
30 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
ALPHA1 L
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Question and Answer IconNeed help?

Do you have a question about the Grundfos ALPHA1 L Series and is the answer not in the manual?

Grundfos ALPHA1 L Series Specifications

General IconGeneral
Pump TypeCirculator
SeriesALPHA1 L
Max Head6 m
Voltage230 V
Frequency50/60 Hz
Liquid Temperature Range2°C to 110°C
Max Operating Pressure10 bar
Insulation ClassF
Enclosure ClassIP42
ApplicationHeating systems
Control ModesProportional pressure, constant pressure
EEI0.20
MaterialCast iron
Power InputVaries by model (e.g., ALPHA1 L 25-40 180: 3-22 W)
Pipe ConnectionG 1 1/2

Summary

Receiving the Product

Inspecting the Product

Check product against order and verify voltage/frequency.

Scope of Delivery

Lists items in the box: pump, plug, gaskets, quick guide.

Installing the Product

Mechanical Installation

Guides mechanical mounting according to local regulations.

Pump Positions

Specifies approved orientations for pump installation (horizontal motor shaft).

Control Box Positions

Details acceptable mounting positions for the control box.

Electrical Connection

Instructions for connecting the pump to the power supply.

Insulating Pump Housing

Guidance on using insulating shells to reduce heat loss.

Starting Up the Product

Before Startup

Ensures system is filled and vented before operation.

Starting Up the Pump

Steps to power on and initiate pump operation.

Venting the Pump

Procedure to remove air pockets for quieter operation.

Product Introduction

Product Description

Overview of ALPHA1 L as a standalone or integrated circulator.

Applications

Suitable uses in heating systems, including PWM control.

Pumped Liquids

Lists acceptable liquids like water/glycol and notes on use.

Product Identification

Details on the nameplate and type key for pump identification.

Accessories

Information on unions, valve kits, and insulating shells.

Cables and Plugs

Lists available installer plugs, signal cables, and adapters.

Control Functions

Operating Panel

Overview of the pump's control panel, buttons, and LEDs.

Control Mode Overview

Introduces the different operational modes of the pump.

Radiator and Underfloor Heating Modes

Details radiator and underfloor heating modes, and their pressure curves.

Constant Speed and System Settings

Explains constant speed settings, and recommendations for heating systems.

Control Signal Interface

Details on PWM signal control, interface, and input/output profiles.

Pump Performance Curves

Illustrates pump performance curves based on settings.

Setting the Product

Setting the PWM Input Signal

How to set the pump using the operating panel and PWM signal.

Servicing the Product

Dismantling the Product

Steps for safely removing the pump from the system.

Dismantling the Plug

Instructions for disassembling the electrical plug.

Fault Finding the Product

Deblocking the Shaft

Procedure for clearing a blocked pump shaft.

Technical Data

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

Physical dimensions for specific ALPHA1 L models.

Dimensions ALPHA1 L 25-65

Physical dimensions for the ALPHA1 L 25-65 model.

Performance Curves

Guide to Performance Curves

How to read and interpret pump performance graphs.

Curve Conditions

Specifies conditions under which performance curves are valid.

Performance Curves ALPHA1 L XX-40 (N)

Performance graphs for ALPHA1 L XX-40 (N) models.

Performance Curves ALPHA1 L XX-60 (N)

Performance graphs for ALPHA1 L XX-60 (N) models.

Performance Curves ALPHA1 L XX-65 (N)

Performance graphs for ALPHA1 L XX-65 (N) models.

Disposal

Related product manuals