MERLO PANORAMIC, User And Maintenance Manual

Page: 151 / 200

7 - PERIODIC SAFETY INSPECTIONS
7 - 13
-
place rule "R" into contact with the chain, so that the v-shaped notch can be inserted into a chain link pin; perform this
operation with side "R2" of the rule facing the operator (fig. 3)
- starting from the v-shaped notch, count the number "B" of chain links to be inspected; since in this case B=12, count 12
chain links.
- check that the 12th chain link does not reach or go beyond the dashed end part of rule "R" on which "C % 3" is written; this
limit represents the maximum permissible extension of the chain due to wear. In this example the chain does not reach the
maximum limit ("C % 3"), therefore it passes the inspection successfully and does not need to be replaced.
-
if the 12th chain link either reaches or goes beyond the maximum limit shown by the dashed area "3 % C", this means that
excessive stretching occurred and that the chain needs to be replaced. (fig. 4)
WARNING!
Perform this inspection in several points of the chain, especially next to the snub pulleys.
Should clear signs of malfunction be found on the chain, replace it even though it has not yet reached its limit
extension (equal to 3%).
END OF SECTION