R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 67)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
67/130
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
• Pass the ends of the rim (1) through the sleeves (5) and press the sleeves into the sockets in the
frame halves.
• Fix the rim in place with the two M10 Nyloc nuts (6). Follow the adjustment instructions to get the nuts
to the proper tightness.
Rope guide initial adjustment
• Tighten the two Nyloc nuts (6) until the rope guide is snug against the rope drum. Tighten both nuts
evenly, so that the rim ends go through the frames in a straight line. If either nut is tightened more
than the other, the rim alignment will change and it might bent in adverse ways.
• Adjust the nuts so that the guide doesn’t rotate around the drum by gravity alone, but will rotate if
additional force is applied in up or down direction. The required additional force should be 20N-30N.
Rope guide test drive and final adjustment
• Test drive the hoist in both up and down direction. To pass the test drive, the rope guides must be
able to travel through the whole height of lift without evidence of strong vibrations or excessive wear
on the drum.
• If the rope guides vibrate strongly, it is likely that they are too tight against the drum. Loosen the
upper Nyloc nut (6) by a quarter turn and retry. If the guides are still too tight, loosen the lower Nyloc
nut by a quarter turn and retry. Continue loosening the nuts in turns until the vibrations disappear.
• If the rope guides become too loose against the drum, they will begin to rotate around the drum by
gravity. As a result there will be an audible clanking noise each time the hoist is stopped after
ascending load motion. This is a result of gravity pulling the loose guides against the intermediate
shaft. If this occurs, tighten the Nyloc nuts in turns until the guides no longer rotate around the drum
by gravity.
Pressure roller, drum size
φ 608 mm
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-> 10.2004
1. Pressure roll
2. Gap adjustment screw (X = 1mm gap between roller and rope)
3. Limit switch adjustment screw
4. Limit switch
Assembly
• The height of the pressure roll must be adjusted (2) so that there is always 1 mm gap between the
rope and the roll.
• The limit switch triggering point must be adjusted (3) so that the limit switch is activated before the
rope is climbed out of the groove.