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Mtrac endless winch
6.2 Regular checks
A) Ongoing checks
Before and during operation always make sure that all components
used, i.e.
• Yale endless winches
• Yale safety locks
• Yale wire ropes
• Rope return sheaves
• Sling gear, etc.
are correctly fitted and are free of detectable defects.
Stop working immediately if defects occur during opera-
tion.
All type and instruction plates must be fitted and legible. Any missing or no
longer legible type and instruction plates must be replaced immediately!
Wire ropes must be replaced immediately if a defect
according to DIN15020 sheet 2 or ISO4309 has been
detected during the weekly check:
– more than 11 broken wires over a length of 24 cm (dia. 8) / 27 cm
(dia. 9) / 30 cm (dia. 10)
– Strong formation of rust on the surface or inside
– Heat damage, indicated by burning discoloration
– Reduction of the outer diameter to less than 7.6 mm (dia. 8 mm) /
8.5 mm (dia. 9 mm) / 9.4 mm (dia. 10 mm)
If damage is detected on the insulation or on the cable connections during
the weekly check of the electrical cables, replace or repair supply and
control cables immediately!
Excerpt from DIN15020: Illustration of the most common types of outer
damage of wire ropes:
Figure 1: Wire rope with corkscrew-like deformation
Figure 2: Wire rope with bird-caging
Figure 3: Wire rope with wire loops
Figure 4: Wire rope with flattening caused by being run over
Figure 5: Wire rope with kink
Figure 6: Wire rope with bend
Summary of Contents for Mtrac YMT-M Series
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