J. D. NEUHAUS PROFI 25TI, Original Operation And Assembly Instructions

Page: 58 / 72

powered by air!
Page 58
MAINTENANCE
CHECKING THE CHAIN, CHAIN SPROCKET
AND CHAIN GUIDES
See also Check dimensions, page 58.
If the chain of the JDN Air Hoist displays one of the following
features, it must be replaced with a new one:
Corrosion pitting
Bent or damaged chain links
Chain drawn tight
Wear over 11 pitches (A
max
)
Single pitch wear (B
max
)
Elongation of a single link (D
max
)
Check the entire length of the chain.
Please observe the information contained in
DIN 685, Part 5 when checking chains, see ISO 7592.
CHECK DIMENSIONS
HOIST CHAIN
Note: When checking the replacement limit, future wear up until the
next inspection date must be taken into account. If the chain
dimension values are outside the limit values specified in the table
when checked, the chain has reached its replacement limit and
must be replaced by a new one. The worn chain sprockets must
also be replaced together with the chain, as otherwise the new
chain will be subjected to increased wear. Each chain replacement
must be documented in the inspection log.
Check dimensions of hoist chain
Chain d x t
23.5 x 66
Dimension A
max.
787.9
11 x t
inside
743
Dimension B
max.
69.5
Dimension C
min.
21.2
Dimension D
max.
116.4
Dimensions in mm