1
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4RAVELLINGCABLE
Function/System
Operations
1.Inspect the travelling cable pulley is free of damage.
2.Inspect the travelling cable is free of squeeze marks and the isolation of the cable is present
and free of damages.
4RACTIONWIREROPE
Function/System
Operations
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./4)#%
When measuring the diameter of the wire ropes, use a
digital calliper with broad measuring faces.
#!54)/.
Rotate the calliper around the wire rope to measure
the minimum and maximum wire rope diameter at
each measurement point.
1. Inspect all the wire ropes along their entire length, paying special attention to the wire rope
ends, parts of the wire ropes running over sheaves and wire ropes under frictional wear by
external components.
-Traction wire rope is clean and slightly greased with a standard multipurpose grease free of
disulphite.
-Traction wire rope is free of deformations and squeeze marks and there are no wire strands
broken.
-There is no severe corrosion on the surface or the inside of the traction wire rope.
-The traction wire rope is free of heat damages (Evident by blue discolouration).
2.Inspect the traction wire rope is properly mounted according to the manual, with an 11kg.
counterweight and the 2 wire rope locks. The traction wire rope is properly coiled up and
fixed with 3 cable ties and the counterweight is able to rotate freely.
3.Inspect the traction wire rope diameter is more than 7,6 mm at any point.
In general, measure the diameter of the wire rope at each WTG tower platform, and under
the service lift, where the wire rope is less loaded. Specifically, if a wire rope wear is
detected, measure on the affected area.
4.Inspect the top beam is properly mounted and properly tightened to the WTG. If welded, the
top beam´s weldings are in good condition and not showing corrosion.
5.Inspect the nuts of the shackles at top beam are locked with a cotter pin.
6.Inspect the length between the top end of each wire rope and its ferrule is equal to or more
than 0 mm.
7.
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. Inspect and replace the traction wire rope if one of the following defects is
found:
-In case there are more than one 4-wire strand break on a wire rope length of 250 mm.
-In case there is severe corrosion on the surface or the inside.
-In case there is heat damage, evident by the wire rope colour.
-In case the wire rope diameter is less than 7,6 mm.
-In case there is damage on the wire rope surface.
(See
Figure
10
:
Wire
rope
damage examples)
./4)#%
Record any visible change of the condition of the wire
ropes on the Inspection and maintenance Log Sheet
Appendix., and monitor closely throughout time.
1
5
#!54)/.
Determine and eliminate the cause before installing
a new wire rope.
#!54)/.
AVANTI recommends to replace the traction and
safety wire ropes after 250 hours of operation
corresponding with the refurbishment of the traction
hoist and fall arrest device. Please check with your
local authority regulations if it’s mandatory in your
case.
