R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 50)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
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R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
• Check the wires for loose connection.
• Check that the switch-elements are in good condition and not loose.
• Check the pushbutton rubbers, emergency stop button and other eventual selector switches are in
good condition.
• Check the cable entry and the plug (if applicable) are tight and in good condition.
• Close the pushbutton controller.
• Check the buttons move freely and do not stick.
• Switch ON the power supply to the hoist and check all functions.
• Check the display readings (if applicable)
5.19 Travelling machinery
The travelling machinery provides the cross-travelling motion of the trolley. The traveling machinery
consists of a squirrel-cage motor and a gearbox. The motor can be either a 2-speed motor, controlled by
contactors or a 1-speed motor controlled by an inverter. The 1-speed motors have a built-in compact
brake, whereas the 2-speed motors are equipped with an external electro-mechanical brake. The
gearbox comprises multistage spur gear transmission, running in grease lubrication. When used in
conformance with the operating group classification of the hoist, the gearbox lubricant does not need to
be changed during the Safe Working Period (SWP). If the hoist is operated in extremely cold conditions,
the factory-installed grease must be replaced with synthetic transmission grease. Refer to the section
“Lubricants” for further instructions.
Low Headroom & Normal Headroom trolleys
c_r1tm10a
1. Gear
2. Motor
3. Gearbox fixing screws.
4. Junction box
5. Junction box fixing screws
6. Motor fixing screws