R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 5 Stepless - Manual (Page 51)

LoadMate
®
LM05 STEPLESS I&M/EN/11.30.2010
51/71
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
may 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.
8.5 Troubleshooting
Table 10. Troubleshooting
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Hoist does not lift or lower load
Emergency stop button is
activated
Deactivate button
Blown fuse Replace the fuse
Motor thermal protection
activated
Allow motor to cool down
Pendant plug pin pushed out Reinstall plug pin
Contactor terminal screws loose Tighten screws
Inverter terminal is badly fixed Press on the terminal
Mainline switch shut off Turn switch on
Hoist does not lift load Overload condition Reduce load
Slip clutch worn or incorrectly
adjusted Replace wear items or readjust
slip clutch torque
Upper limit switch is activated Adjust
Load drifts more than 4 inches
[100mm] during an emergency
stop
Brake lining worn
Adjust the brake slipping clutch
and replace the slipping clutch
components if necessary.
Travel direction does not
correspond to that indicated on
push button Connections of the pendant are
incorrect. Change wiring of pendant.
Abnormal noises while lifting or
lowering Load chain and its components
are not lubricated
Clean and lubricate load chain.
Load chain is worn Replace chain
Chain wheel or chain guide is
worn Replace chain wheel or chain
guide
Idler sprocket is worn Replace idler sprocket
A supply phase is missing Connect the three phases
Twist or kink in load chain Remove twist or kink
Slow down distance is too long Wrong inverter setting
Adjust slow down at inverter
level