User Manual

R&M Materials Handling, Inc LoadMate Chain Hoist

Springfield, Ohio USA TDU Instruction Manual

(: 800 955-9967 Revision 2

web: www.rmhoist.com

08/13/02 RM-LM-TDU-MAN-1999-2-ENG.doc

Motor and Brake

1. Brake Assembly 2. Brushes 3. Rotor Stator

4. Gear Reducer 5. Printed Circuit Board 6. Control Enclosure

Motor

Two phases of the power supply are used where one phase is always energized.

Reminder: With reference to the standards, the user must provide an emergency shutdown or mainline

disconnect switch at a maximum of 24 feet from the trolley. On the electric chain hoist, a mainline contactor

is provided in hoist control enclosure as standard.

Note: If the motor has been in a humid atmosphere, it is advisable to check the insulation resistance. This

should not be less than 5000 ohms per volt of rated voltage.

Brake

Braking occurs when the D.C. coil is de-energized. The asbestos free friction material is on each side of the

disk. The energized coil pulls the disc against the spring and releases the brake. Once the coil is de-

energized the spring applies a clamping force, setting the brake.