Columbus McKinnon Yale CPV Series Translated Operating Instructions page 34

p
n
d = Nenndicke der Kette / Nominal thickness of chain
Epaisseur nominale de la chaîne
d , d = Istwert / Actual value / Valeur réelle
1 2
d + d
1 2
d = ≤ 0,9 d
min.
2
Replacing the load chain
To replace a load chain, it must be suspended and connected to a power source.
A load chain to be discarded must only be replaced by an authorized specialist workshop.
NOTE: Replacement of a load chain must be documented!
1-strand design
1. Dismantling of bottom blocks
Loosen both cylinder screws and separate the two coupling halves.
2. Dismantling the chain end stop
Loosen both screws on the chain end stop. The chain end is now free. Pull out the buffer.
3. Pulling the new chain in
Disconnect the second last one link on the idle strand of the old chain in C shape. The length of the cut section must at least correspond
to the thickness of the link. Then, remove the last link and suspend the new chain in the C-shaped chain link. The welded seams of the
new load chain must align with those of the load chain to be replaced! The chain can finally be moved in at the lowest possible speed by
pressing the ▼-button.
ATTENTION: The C-shaped chain link should not differ from a closed link in outer shape and dimensions. Otherwise, it cannot
pass through the hoist during the final entry of the chain. Risk of damage to hoist! Risk of chain break!
4. Installing the chain end stop and bottom block
As soon as the C-shaped chain link passes through the hoist, the old load chain can be hung out and discarded along with the C-
shaped auxiliary link. Move the buffer to the ends of the new load chain before installing the chain end stop or the bottom block. The
hook head must be re-lubricated while assembling the bottom block.
ATTENTION: The chain end stop must be positioned in such a way that after the installation at least 1 chain link remains.
Always use SK nuts with a clamping section.
5. Before initial operation lubricate the unloaded chain and test all hoist functions under no-load condition.
2-strand design
Before starting work, please make sure that the bottom block is fully tension-free.
1. Dismantling the chain bolt
In two-strand models, the chain anchor bolt is placed on the underside of the hoist body. The four cylinder screws of the chain anchor
must be detached first. The chain bolt must then be tapped out with a drift.
ATTENTION: Do not damage the bolt or the seat.
2. Dismantle the chain end stop
Remove the two screws. The chain is now free.
3. Pulling the new chain in
Disconnect the second last one link on the idle strand of the old chain in C shape. The length of the cut section must at least correspond
to the thickness of the link. Then, remove the last link and suspend the new chain in the C-shaped chain link. The welded seams of the
new load chain must align with those of the load chain to be replaced! The chain can finally be moved in at the lowest possible speed by
pressing the ▼-button. The load strand end of the old load chain must be kept somewhat stretched continuously to ensure a smooth
and upright reeving in the hoist and the bottom block.
ATTENTION: The C-shaped chain link should not differ from a closed link in outer shape and dimensions. Otherwise, it cannot
pass through the hoist during the final entry of the chain. Risk of damage to hoist! Risk of chain break!
4. Installing the chain end stop
As soon as the C-shaped chain link passes through the hoist and the bottom block, the old load chain can be hung out and discarded
along with the C-shaped auxiliary link. Finally, push the buffer to the idle strand end of the chain and install the chain end stop. After
installing the chain end stop, at least 1 chain link must remain.
5. Fitting the chain anchor bolt
Inspect the chain anchor bolt for flaws, cracks or burrs. Enter the last link of the other load chain end into the slot in theunderside of the
hoist body.
Attention: The chain must not be twisted.
Now enter the chain anchor bolt through the side bore. Move the last link back and forth while entering the chain anchor bolt to ensure
that it is not trapped and damaged by the anchor bolt. Secure the anchor bolt with the grub screw.
11 x
p
n
d
1
©
2016 Columbus McKinnon Industrial Products GmbH
Link chains A = 4 x 12,2 DAT / B = 5 x 15,1 DAT / C = 7,1 x 20,5 DAT
Inspection Dim.
A
Length over 11 pitches 11 x t 134,2 166,1 225,5 136,9 169,4 230,0
Length of 1 pitch t 12,2 15,1 20,5 12,8 15,9 21,5
Diameter d 4
d + d
1 2
Mean thickness 4
2
Tab. 2
34
Nominal value Wear limit
[mm] [mm]
B C A B C
5 7,1 – – –
5 7,1 3,6 4,5 6,4