R&M LOADMATE LM 20 - User Manual

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This document and the information contained herein, is the exclusive property of R&M Materials Handling, Inc., and represents a non-public, confidential and proprietary trade secret that

ma

y not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of R&M Materials Handling, Inc.

Copyright © (2010) R&M Materials Handling, Inc. All rights reserved.

INSTALLATION AND

MA

INTENANCE MANUAL

LM CHAIN HOIST

LOADMATE

®

LM1

English

STD-R-KHA-F-CQD-ENG

Table of Contents

Questions and Answers

R
robertbarronAug 9, 2025
What to do if R&M LOADMATE LM 20 does not lift or lower load?
- J
  Jeremy SanchezAug 10, 2025
  If your R&M Chain Hoist isn't lifting or lowering, several things could be happening. First, check if the emergency stop button is activated and deactivate it. A blown fuse could also be the culprit, so replace it. The motor's thermal protection might have kicked in, so allow the motor to cool down. Ensure the pendant plug pin is correctly installed. Also, check that the contactor terminal screws are tightened and that the mainline switch is turned on.
R
Rachel MorenoAug 17, 2025
What to do if R&M Chain Hoists does not lift load?
- A
  Anthony SantosAug 17, 2025
  If your R&M Chain Hoist isn't lifting the load, it could be due to a few reasons. You might be experiencing an overload condition, in which case you should reduce the load. Alternatively, the slip clutch could be worn or incorrectly adjusted; consider replacing wear items or readjusting the slip clutch torque. Another possibility is that the brake isn't releasing, so check the brake coil resistance, air gap setting, and rectifier output voltage, adjusting if necessary.
W
William BaileyAug 25, 2025
Why R&M LOADMATE LM 20 Chain Hoists makes abnormal noises while lifting or lowering?
- S
  Stephen ChapmanAug 26, 2025
  If you notice unusual noises when lifting or lowering with your R&M Chain Hoists, here's what might be happening: * The load chain and its components may need lubrication, so clean and lubricate the load chain. * The load chain could be worn and needs replacement. * The chain wheel or chain guide might be worn, requiring replacement. * The idler sprocket could be worn and needs replacing. * A supply phase might be missing; ensure all three phases are connected. * There might be a twist or kink in the load chain; remove it.
J
jennifercarsonAug 31, 2025
Why load drifts more than 4 inches [100mm] on R&M Chain Hoists?
- P
  Pamela DurhamAug 31, 2025
  If the load drifts more than 4 inches [100mm] on your R&M Chain Hoists, it could be that the brake lining is worn, or the air gap on the brake is too wide. Replace the worn parts as necessary and adjust the air gap setting.

Summary

Introduction and Safety Information

Safety Precautions and Guidelines

Details DANGER, WARNING, and CAUTION indicators and emphasizes common sense for safe operation.

Hoist Installation Procedures

Electrical Connection Requirements

Specifies requirements for power supply, fuses, conductors, and grounding.

Three Phase Power Connections

Single Phase Power Connections

Initial Hoist Start-Up and Testing

No Load Operational Checks

Operational Checks With Load

Hoist Operation Guidelines

Maintenance and Component Care

Hoist Motor Brake and Load-Limiting Device

Explains the DC electromagnetic disc brake and integrated slip clutch.

Slip Clutch Adjustment Procedure

Details how to adjust the slip clutch for proper load lifting capacity.

Hoist Motor Brake Adjustment

Guides on adjusting the brake air gap for optimal performance.

Load Chain Inspection and Handling

Limit Switch Systems

Hook Inspection and Replacement

Covers general inspection, deformation measurement, and safety latch requirements.

Hook Inspection Details

Hoist Control System Overview

Three Phase Control Panel Layout

Single Phase Control Panel Layout

Wiring Diagrams Overview

Introduces wiring diagrams for various hoist configurations.

Three Phase Hoist Wiring Diagram

Provides the wiring diagram for a three-phase, two-speed hoist.

Single Phase Power Circuit Diagram

Details the power circuit wiring diagram for single-phase hoists.

Single Phase Control Circuit Diagram

Presents the control circuit wiring diagram for single-phase hoists.

Preventative Maintenance Schedule

Maintenance and Inspection Schedule

A table outlining inspection checks, intervals, and qualified personnel.

Lubrication Specifications and Points

Troubleshooting Common Issues

Identifies problems, possible causes, and solutions for hoist operation.

R&M LOADMATE LM 20 Specifications

General

Model	LM 20
Load Capacity	2000 kg
Weight	45 kg
Protection Class	IP55
Lifting Height	3 m
Power Supply	400 V, 3-phase
Frequency	50 Hz
Capacity Range	Up to 2000 kg
Capacity	2000 kg
Lifting Speed	4 m/min
Chain Type	FEC80
Lift	3 m

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