Harrington NER2050L - User Manual

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Owner’s Manual

ELECTRIC

CHAIN HOIST

ER2 and NER2

SERIES

1/8 Ton through 5 Ton Capacity

EFFECTIVE: February 19, 2009

Code, Lot and Serial Number

WARNING

This equipment should not be installed, operated, or

maintained by any person who has not read and understood

all the contents of this manual. Failure to read and comply

with the contents of this manual can result in serious bodily

in

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y

or death, and/or

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Table of Contents

Questions and Answers

R
ryan61Aug 23, 2025
Why is my Harrington NER2050L moving in the wrong direction?
- K
  Kimberly HarrisAug 23, 2025
  If your Harrington Chain Hoist is moving in the wrong direction, the issue might be: * **Reversed Power Supply:** The power supply might have reversed phasing. In this case, switch two of the three power supply cord wires at the power source. Refer to Section 3.7.11 for instructions on how to check for correct power supply phase connection. * **Wiring:** There might be improper electrical connections. Refer to the wiring diagram and check all connections.
S
stephaniemooreNov 6, 2025
What to do if my Harrington Chain Hoist will not operate?
- M
  Mary SmithNov 6, 2025
  If your Harrington Chain Hoist isn't working, here's what to check: * **Power Issues:** Look at the circuit breakers, switches, fuses, and connections on the power lines/cable to ensure they're functioning correctly. * **Voltage/Frequency:** Verify that the voltage and frequency of the power supply match the specifications on the motor's nameplate. * **Overload:** Make sure the hoist isn't overloaded; reduce the load to stay within the hoist's rated capacity. * **Wiring:** Turn off the power and inspect the wiring connections on the hoist control panel and inside the push-button pendant for any improper, loose, or broken wires. * **Brake:** Check the motor brake adjustment to ensure it has proper clearance. If the motor is overheating, see the troubleshooting steps for "Motor ...

Summary

Important Information and Warnings

Usage Limitations

Specifies prohibited uses and requirements for system compliance.

Electrical Safety and Responsibilities

Covers electrical hazards, lockout/tagout, and user responsibilities.

Electrical Connections

Pendant and Power Supply Cable Connections

Covers connecting pendant and power supply cables.

Power Supply Cable Installation

VFD Setup (Dual Speed Only)

VFD Keypad;Display Interface

Explains VFD keypad functions and display elements.

VFD Speed & Frequency Ranges

VFD Speed;Frequency Change Procedure

Step-by-step guide for changing VFD speed settings.

Preoperational Checks and Trial Operation

Motor Phasing Check

Instructions for checking and correcting motor phasing.

Operation

Shalls and Shall Nots for Operation

Lists mandatory and prohibited operational practices.

Hoist Controls

Inspection

Inspection Classification

Frequent Inspection

Outlines frequent inspection items and procedures.

Periodic Inspection

Outlines periodic inspection items and procedures.

Inspection Methods and Criteria

Maintenance and Handling

Count;Hour Meter

Lubrication - Load Chain, Hooks and Suspension

Lubrication - Gearbox

Load Chain Replacement

Step-by-step guide for replacing the load chain.

Troubleshooting

Troubleshooting Guide

Lists common symptoms, causes, and remedies for hoist problems.

Harrington NER2050L Specifications

General

Brand	Harrington
Model	NER2050L
Category	Chain Hoists
Language	English

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