Rm-materials-handling WIRE ROPE HOISTS Service Manual de usuario descargar pdf (Pagina 35)

R&M Materials Handling, Inc.

4501 Gateway Boulevard

Springfield, Ohio 45502

P.: (937) 328-5100

FAX: (937) 325-5319

35/130

R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.

Brake type and size Original thickness of the

brake disc

[mm]

Minimum thickness of

the brake disc

[mm]

Tightening torque for

brake fixing screws

[Nm] / [lbf.ft]

NM39340NR# 11.15 10.4 22 / 16.2

NM39351NR# 14.00 13.2 22 / 16.2

5.11 Manual brake release for hoisting motor (for brake type NM387**)

! The manual brake release is allowed to use only in case of emergency.

! Potential energy of load will heat up the brake rapidly. Follow the instructions for usage

carefully.

! Faulty usage of the manual brake release can cause uncontrolled lowering of the load.

! It is recommended to contact a service agency authorised by the manufacturer. Especially

trained personnel are able to ensure safe lowering of the load.

! In hoists models equipped with a second brake (optional), the second brake must be

detached before installing brake release fork to the main brake.

! In hoist models equipped with 2 hoisting motors (and thus 2 main brakes), both brakes must

be manually opened with levers simultaneously. This action requires 2 persons to carry out.

c_mobr1b

1. fork lever (assembled to hoisting motor brake)

2. lever arm

3. brake frame

A. gap, ( >1.8 mm)

5.11.1 Assembling the manual brake release

• Ensure that the fork lever (1) can move freely. Gap (A) between fork the lever (1) and brake frame (3)

must be at least 1.8 mm.

• Screw the lever arm (2) into fork lever (1).

# In hoists with drum Ø 406mm and drum length H (1250mm) or J (1600 mm), the brake is installed

in the end of gearbox.

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Rm-materials-handling WIRE ROPE HOISTS Service Manual de usuario Pagina 35