Rm-materials-handling WIRE ROPE HOISTS Service Uživatelský manuál stáhnout pdf (Strana 33)

R&M Materials Handling, Inc.

4501 Gateway Boulevard

Springfield, Ohio 45502

P.: (937) 328-5100

FAX: (937) 325-5319

33/130

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

5.9.1.2 Brake

c_brda1b

1. Fan cover

2. Fan

3. Brake

4. Inside of the brake

5. Brake disc

6. Friction plate

7. Anchor plate

8. Fixing screws

• Lower the hook to the ground. Switch OFF the power supply to the hoist.

• Remove the protective cover of the hoisting machinery.

• Lock the rope drum with i.e. a wooden wedge, to prevent it from rotating.

! The weight of the rope may cause the drum to rotate when the gearbox is detached.

• Remove the fan cover (1) and fan (2).

# Do not pull the fan by the fins! Place your fingers behind the fan and carefully pull the fan off the

shaft.

• Remove the fixing screws for the brake.

• Detach the brake (3).

• Check the brake type on the rating plate fixed to the brake.

• Measure the thickness of the brake disc (5).

• Replace the brake disc if the thickness is less then the minimum thickness as according to the below

table.

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]

Tightening torque for

anchor plate screws

[Nm] / [lbf.ft]

NM39972NR# 7.00 6,6 5.0 / 3.7 5.0 / 3.7

NM38721NR# 8.00 7,6 9 / 6.6 2.5 / 1.8

NM38720NR# 8.00 7,6 9 / 6.6 2.5 / 1.8

NM38730NR# 10.40 10,1 9 / 6.6 2.5 / 1.8

NM38740NR# 11.15 10.4 22 / 16.2 5.0 / 3.7

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