Columbus McKinnon Yalelift 360 Traduction De Mode D'emploi page 8

ATTENTION: After the replacement of
components, a subsequent inspection by a
competent person is obligatory!
Inspection of the load chain
(acc. to DIN 685-5)
Load chains must be inspected for mechanical
damage at annular intervals, however after
50 operating hours, at the latest. Inspect the
load chain for suffi cient lubrication and check
for external defects, deformations, superfi cial
cracks, wear and corrosion marks.
Round steel section chains must be replaced
when the original nominal thickness ´d´ on
the chain link with the worst wear has been
reduced by more than 10% or when the chain
has elongated over one pitch ´p
(Fig. 13) or over 11 pitches (11 x p
Nominal dimensions and wear limits are
shown in table 2. If one of the limit values is
reached, the load chain must be replaced.
Maintenance of the load chain
In most cases, chain wear in the link points
is caused by insuffi cient care of the chain. In
order to ensure optimal lubrication of the link
contact points, lubricate the chain at regular
intervals adapted to the application with creep-
type lubricant (e.g. gear oil).
A dry fi lm lubricant, e.g. PTFE spray, should
be used in environments where abrasives like
sand, etc., occur.
The service life of the load chain can be in-
creased by careful lubrication to 20 - 30 times
compared with a chain that is not serviced.
- When lubricating the chain, make sure the
chain is in no-load condition so that the oil
can reach the contact points of the chain
links which are subject to wear. Chain link
parts contacting each other must always be
coated with lubricant, otherwise increased
wear on the chain results.
- It is not suffi cient to lubricate the chains on
the outside as this does not ensure that a
lubricant fi lm can build up in the contact
points.
- With a constant lifting path of the chain, the
change-over area from lifting to lowering
movement must be checked in particular.
- Make sure that the load chain is lubricated
over its entire length, also including the part
of the chain in the housing of the hoist.
- Clean dirty chains with petroleum or a similar
cleaning agent, never heat the chain.
- When lubricating the chain, also check the
chain for wear.
ATTENTION: It must be ensured that no lub-
ricant can penetrate into the brake enclosure.
This may result in failure of the brake.
8 von 20
Replacing the load chain
The load chain must be replaced by a new
chain of the same dimensions and quality in
the event of visible damage or deformations,
however, when the discarding status has been
reached, at the latest.
A load chain to be discarded must only be
replaced by an authorized specialist workshop.
Only fi t load chains which have been approved
by the manufacturer. Non-compliance with this
specifi cation will render the legal warranty or
guarantee void with immediate eff ect.
Note: Replacement of a load chain must be
documented!
ATTENTION: Chains must only be replaced
by chains of the same material, with the same
´ by 5 %
n
quality and the same dimensions.
) by 3 %.
n
Hoist with single fall
- Only pull in the new chain in no-load condi-
tion.
- An open load chain link is required as a
tool. It can be obtained by using an abrasive
wheel to cut a section from an existing link
with the same dimension. The length of the
cut section must at least correspond to the
thickness of the link.
- Remove load hook from the old load chain
and suspend open load chain link in the
loose end of the load chain.
- Suspend the new lubricated load chain
also in the open link and pull it in (chain
movement UP).
- Do not fi t a twisted chain. The welds must
face outwards from the chain wheel.
- When the old load chain has passed through
the hoist unit it can be detached together
with the open chain link and the load hook
can be fi tted on the new load chain just
pulled in.
- Fix the end of the idle fall of the new load
chain on the housing or frame (depending
on model) of the hoist.
Hoist with several falls
ATTENTION: Only pull in the new chain when
the bottom block is unloaded, otherwise the
bottom block may drop when the load chain
is detached. Danger of injury!
- An open load chain link is required as a
tool. It can be obtained by using an abrasive
wheel to cut a section from an existing link
with the same dimension. The length of the
cut section must at least correspond to the
thickness of the link.
- Detach the loaded-fall end of the load chain
from the housing of the hoist unit or the
bottom block (depending on model).
- Suspend prepared, open load chain link in
the now free load chain end.
- Suspend the new, lubricated load chain
also in the open link and pull it through
the bottom block and the hoist unit (chain
movement UP).
- Do not fi t a twisted chain. The welds must
face outwards from the chain wheel.
- When the old load chain has passed through
the hoist unit it can be detached together
with the open chain link.
- Fix the loaded-fall end of the new load chain
on the housing/frame or on the bottom block
(depending on model) of the hoist.
- Fix the loose end of the idle fall on the hoist
instead of the old load chain.
ATTENTION: The loose end of the idle
fall must always be fi tted to the chain stop
(Fig. 11).
Inspection of the load hook and top hook
Inspect the hook for deformation, damage,
surface cracks, wear and signs of corrosion,
as required, but at least once a year. Actual
operating conditions may also dictate shorter
inspection intervals.
Hooks that do not fulfi l all requirements must
be replaced immediately. Welding on hooks,
e.g. to compensate for wear or damage is
not permissible. Top and/or load hooks must
be replaced when the mouth of the hook has
opened more than 10 % (Fig. 14) or when the
nominal dimensions have reduced by 5 % as
a result of wear.
Nominal dimensions and wear limits are
shown in table 3. If a limit value is reached,
replace the components.
Inspection of the brake
Immediately contact the manufacturer, if
irregularities are found (e.g. defective friction
disks). All components of the brake must
be checked for wear, damage, discoloration
caused by overheating and for functioning.
Friction disks must always be kept free from
grease, oil, water or dirt. Check the bonding
of the friction disks.
Replacing the hand chain
ATTENTION: Chains must only be replaced
by chains of the same material, with the same
quality and the same dimensions.
- An open load chain link is required as a
tool. It can be obtained by using an abrasive
wheel to cut a section from an existing link
with the same dimension. The length of the
cut section must at least correspond to the
thickness of the link.
- Open the old hand chain (preferably on the
connection link) and suspend the open link
into the loose end of the hand chain which
lies „in front of" the hand chain wheel.