Zoomlion QY30V, Manual

Page: 187 / 276

07-16 07-16
Af After ter th th e ro e ro pe i pe i s u s u sed sed fo fo r a r a per per io io d o d o f t f t im im e, i e, its ts st st ren ren gt gt h w h w ilil l b l b e red e red uc uc ed t ed t o o su su ch ch an an
extent that the danger ma extent that the danger may occur if t y occur if t he rope continu he rope continu es to be used. es to be used.
Caution Caution
M a i n t e n a n c e a n d s e r v i c e M a i n t e n a n c e a n d s e r v i c e
— — T Take-down ake-down cri cri teria teria
a) a) There is There is 10% broken 10% broken rope in rope in one strand ( one strand (excluding the excluding the break caused by break caused by
damage to the rope core); damage to the rope core);
b) b) The diameter The diameter is reduced is reduced by m by more than ore than 7% of 7% of its its nominal nominal diameter; diameter;
c) c) The The wire wire rope rope is is reverse reverse bent bent or or knot; knot;
d) d) The wir The wire rope e rope is seri is seriously deform ously deformed; wire ed; wire core is core is revealed, bir revealed, birdcage deformed dcage deformed
and is in corrosion. and is in corrosion.
The The wire ropes mus wire ropes mus t be take t be taken dow n dow n when one of th n when one of th e a e above situ bove situ ations oc ations oc cur. cur.
e) e) T Tension c ension caused by aused by rope c rope coming oming out fr out from om the pul the pulley; ley;
f) f) Damage Damage caused caused by by heavy heavy objects; objects;
g) g) Damage Damage caused caused by by electric electric welding welding or or gas gas welding; welding;
h) h) Damage Damage caused caused by by short short circuit; circuit;
i) i) Damage Damage caused caused by by the the effect effect of of heat. heat.
The wire ropes, in accordance with the wearing conditions, can be taken The wire ropes, in accordance with the wearing conditions, can be taken
down w down w hen one of the a hen one of the above 5 situations oc bove 5 situations oc cur. cur.
— — Me Method thod s s for for replacing replacing the the hois hois t t rope rope
Before replacing the hoist rope, ensure the following two prerequisites are met: Before replacing the hoist rope, ensure the following two prerequisites are met:
a) a) Level Level the the crane crane on on firm firm and and flat flat ground; ground;
b) b) T Telescope elescope in in the the boom boom completely completely..
Caution Caution
Caution Caution