Rm-materials-handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist TMU Mot Manuel d'utilisateur télécharger pdf (Page 18)

LM TMU I&M MANUAL/EN/06.15.2009

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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 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.

3.4 Mounting Position of Drive Unit

Figure 7. Positioning of the TMU Drive Unit

The TMU drive unit is to be positioned so that the control enclosure is located to the side of the motor, with

the power cable outlet pointing down as shown above.

Other mounting positions of the drive are not recommended because they reduce the cooling effectiveness

and may cause overheating of the controls.

3.5 Mounting the Drive Unit

y Be sure the main power supply is switched off - to avoid electrical hazard.

y Align the pinion teeth with the wheel gear teeth. Push the drive unit against the trolley side plate.

y Rotate the machinery to the proper mounting position. Note: the motor brake prevents the free rotation of

the motor. So either release the brake or raise the drive wheels off the rail.

y Insert the mounting bolts. Use lock washers

y Tighten the mounting bolts by hand until snug.

y If the drive wheels are raised up, lower the wheels down before beginning the final tightening of the

mounting bolts. Note: Wheels must lie on the track when tightening the mounting bolts to ensure that no

excessive loads are directed toward the secondary shaft. Recommended tightening torque for M8 bolt is

18 ft-lbs [24 Nm].

y Connect the power cable plug to the hoist.

3.6 Removing the Drive Unit

y Disconnect power and lockout disconnecting means on the crane/hoist.

y Disconnect the power cable plug from the hoist.

y Loosen and remove the mounting bolts.

y Remove the drive unit from the trolley side plate.

3.7 Inspection and Service of the Drive Unit

y Check the tightness of the mounting bolts.

y Check the traveling motion: acceleration and deceleration.

y Check the brake for wear of the friction linings. If necessary, clean the brake and replace the friction

linings.

y Check the air gap of the brake.

y Check that the inverter or contactors operate correctly.

y Gears are lubricated with semi-fluid grease. See Preventative Maintenance section for grease type.

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Rm-materials-handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist TMU Mot Manuel d'utilisateur Page 18

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