R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 39)

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.
Adjustment
• Lower the hook to approx. 100mm above the floor.
• Loosen the fixing screws (3).
• Move limit switch along the fixing plate until the limit roller lever switch is just activated.
• Tighten the fixing screws and test the operation. The downwards motion must stop at the described
distance.
• Repeat step 1…4 until the correct setting is achieved.
• Re-assemble drum cover and close the connection-box.
!
Make sure that there is at least 5 turns of the rope left on the drum when the hook is at the
lowest position. Otherwise rope guide and rope clamp could interfere and damage.
5.14 Hoisting limit switch (new, white)
The rotary hoist limit switch contains four contacts, with the below described default functions. The rotary
limit switch unit for hoisting is located in the connection box on the hoisting gearbox.
S1. Supervision limit for phase sequence of hoisting (or hoisting safety limit).
S2. Upper limit of hoisting.
S3. Slowdown limit switch for hoisting.
S4. Lower limit for hoisting.
1. NC contact
2. NO contact
3. Common contact
#
Notice the right direction of adjusting screw rotation
5.14.1 Service
• Check the proper tripping point of all limiting functions.
• Check the wiring for loose connections.