R&M LOADMATE LM 25 - 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

M
melvinchangAug 9, 2025
What to do if R&M LOADMATE LM 25 Chain Hoists does not lift or lower load?
- D
  Daniel WrightAug 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.
M
Mrs. Sandra AcevedoAug 17, 2025
What to do if R&M Chain Hoists does not lift load?
- N
  Natalie CrawfordAug 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.
M
Michael ParkerAug 26, 2025
Why R&M LOADMATE LM 25 Chain Hoists makes abnormal noises while lifting or lowering?
- J
  josephsampsonAug 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
John PatrickAug 31, 2025
Why load drifts more than 4 inches [100mm] on R&M Chain Hoists?
- J
  Joseph DuncanAug 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

Safety Guidelines

Emphasizes reading manual and understanding hazards indicated by DANGER, WARNING, CAUTION.

Installation Procedures

General Installation Steps

Electrical Connection Requirements

Discusses requirements for power supply hardware and voltage considerations.

Three Phase Power Connections

Details steps for connecting power to a three-phase control box.

Single Phase Power Connections

Provides instructions for connecting power to a single-phase control box.

Initial Start-Up Procedures

Correcting Hook Travel Direction

Explains how to reverse motor direction by swapping power leads.

No-Load Operational Checks

Operational Checks with Load

Hoist Operation

Maintenance and Servicing

Hoist Motor Brake and Load-Limiting Device

Explains the function of the DC electromagnetic disc brake and slip clutch.

Slip Clutch Operation

Details how the slip clutch operates and how adjustment affects capacity.

Slip Clutch Adjustment Procedure

Provides steps to adjust the slip clutch for proper load lifting.

Hoist Motor Brake Adjustment

Guides on measuring and adjusting the air gap for the hoist motor brake.

Motor Brake Replacement Criteria

Load Chain Inspection Procedure

Load Chain Removal Process

Provides step-by-step instructions for removing 1-fall and 2-fall load chains.

Load Chain Installation Process

Details the procedure for installing a new load chain for 1-fall configurations.

Limit Switch Functions

Explains the function and adjustability of safety limit switches.

Hook Inspection and Specifications

Control Panel Layouts

Wiring Diagrams Overview

Provides wiring diagrams for various hoist configurations.

Three Phase Wiring Diagram

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

Single Phase Wiring Diagrams

Push Button Wiring Diagrams

Preventative Maintenance Schedule

Maintenance and Inspection Schedule

Lubrication Specifications and Brands

Troubleshooting Common Issues

Offers solutions for common problems encountered with the hoist.

R&M LOADMATE LM 25 Specifications

General

Lifting Height	3 m
Chain Length	3 m
Material	Steel
Safety Factor	4:1
Lifting Speed	4 m/min
Power Supply	230 V / 50 Hz

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