MHD56490
11
Installing Wire Rope
Refer to
1. Cut wire rope to length in accordance with wire rope manufacture’s instructions.
2. Feed end of wire rope through drum anchor pocket hole.
3. Forming a loop, wrap loop around anchor, approximately 22 inches (559 mm) of wire rope. Ensure dead end of
wire rope is facing away from the drum flange.
4. Pull wire rope anchor into position in drum anchor pocket.
Safe Wire Rope Handling Procedure
•
Always use gloves when handling wire rope.
•
Never use wire rope that is frayed or kinked.
•
Never use wire rope as a sling.
•
Always make sure wire rope is correctly spooled and the first layer is tight against drum.
•
Always follow wire rope manufacturer’s recommendation on use and maintenance of wire rope.
Wire Rope Spooling
To compensate for uneven spooling and the decrease in line pull capacity as the drum fills up, use as short a wire
rope as practical. When rewinding apply tension to the end of the wire rope to eliminate line slack. This helps
achieve level winding and tight spooling.
C
CA
AU
UT
TIIO
ON
N
!
• To avoid damage to the rigging, the structure supporting the rigging and the winch, do not
use with a multi-reeving wire rope arrangement.
• Refer to DNV Standard OS E101, that provides further information regarding rigging.
N
NO
OT
TIIC
CE
E
!
The limit switch will require adjustment before and after spooling to full drum storage.
Safe Installation Procedures
1. Do not use wire rope as a ground (earth) for welding.
2. Do not attach a welding electrode to winch or wire rope.
3. Never run wire rope over a sharp edge. Use a correctly sized sheave.
4. When a lead sheave is used, it must be aligned with center of drum. The diameter of lead sheave must be at
least 18 times the diameter of wire rope. Refer to Dwg. MHP2449 in Product Safety Information Manual.
5. Requirement to maintain at least 5 tight wraps of wire rope on the drum at all times.
Rigging
The sheave arrangement with fastening to structure shall be dimensioned according to the same principle as the
winch itself. The geometry shall ensure free path for the person lifted or lowered and ensure no damage to wire
rope. The geometry shall ensure that the angle between wire rope and drum or sheave is /- 4 degrees. The
sheave arrangement shall be fitted with protection ensuring that derailing of wire rope does not occur. The
diameter ratio between sheave and wire rope shall be in accordance with the manufacturer’s requirements but a
minimum 18:1. All fittings and connectors will have at least the breaking strength of the wire rope. For the
terminations of wire ropes only splices; aluminium pressed ferrules, non-ageing steel pressed ferrules, or wedge
socket anchorages may be used. U-bolt grips shall not be used as wire rope terminations for load carrying wire
ropes.
Table 7. Sheave Specifications
Winch Series
Minimum Diameter of Sheave (mm)
Design Factor x SWL for Sheave
MR150K
200
1.5
