6
SPARK FORMATION
The Yalelift hoist series has been designed
exclusively for lifting, lowering, pulling and
spanning of loads. In combination with trol-
leys (YLITP/G und YLLH) they are also capa-
ble for the horizontal transport of loads.
Note:
Trolleys must be provided with buffers!
Any different or exceeding use is consid-
ered incorrect and Yale Industrial Prod-
ucts GmbH will not accept any responsi-
bility for damages resulting from false
application. The risk is solely with the user.
Materials subject to danger of friction
and impact
Increased danger of ignition may emanate
from clashing of special material pairings.
These are non corrosion-resistant steel or cast
iron against aluminium, magnesium or perti-
nent alloys. This applies especially in case of
rust or surface rust. Chain and load hook in
particular can generate rust (surface rust) at
the wear points. To ensure correct operation
of the product, these wear points must be clear
from rust and – in the application area at pos-
sible friction, impact or grinding points - do
not present material combinations from a.m.
aluminium alloy and steel (exception: antirust
steel), in order to exclude spark formation as
a result of mechanical impact.
Hand and load chain
Always ensure that hand and load chain as
well as the load are guided to exclude grind-
ing or sliding contact with external construc-
tions or components. Depending on the de-
gree of corrosion, the conductive discharge
capability of load and hand chains can wors-
en to an effect that it is not adequate any long-
er. This implies that rusty hand and load chains
must not be further used.
Attention:
The user has to operate the unit
to avoid sparking from either hand or load
chain. Models YLITP/G, YLLH and Towerlift
must be operated from below.
For additional safety and to avoid sparking by
impact or friction during operation, the units
are equipped with stainless steel hand chains.
Top and load hooks are copper plated.
Trolleys are provided with solid bronze wheels
and buffers.
Optional:
Stainless steel load on request.
Attachment points
Attachment points have to be selected to
ensure that the expected forces can be safely
accepted. The unit must move freely under
load in order to avoid incorrect additional
loading.
STATIC ELECTRICITY
In order to avoid static charge at plastic parts,
do not use parts of attachment (e.g. round
slings) in the area of facing panels, hand chain
guide and cap (see Fig. 11).
When cleaning these components, make sure
to apply only materials which do not allow elec-
trostatic charging.
TRANSPORT AND STORAGE
Safe transport
During transport of the unit observe to follow-
ing:
- Do not throw the hoist down. Always
place it properly on the ground.
- Hand and load chains must be trans-
ported in a way to avoid knott ing and
formation of loops.
INITIAL OPERATION
Inspection prior to initial operation
Hoists including carrying construction have to
be inspected prior to initial operation and
after each essential alteration by a competent
person*. The inspection shall establish that
the unit is safe and ready for operation.
* A competent person is a person with profes-
sional training, experience and actual opera-
tion to provide the necessary expertise for the
inspection of material handling equipment.
Check brake function
Prior to each operation check brake function
as follows:
- Lift the load over a short distance and lower
again. When releasing the hand chain, the
load must be safely held in any position.
Attention:
In case of brake failure consult
the manufacturer/supplier!
CORRECT OPERATION
The unit is designed for lifting, lowering, pull-
ing and spanning of loads.
- The capacity indicated on the product is the
maximum safe working load (WLL) that may
be attached.
- The load and suspension hook of the hoist
during lifting operations must be perpendic-
ular to the centre of the load in order to pre-
vent swinging during lifting (Fig. 1).
- Do not allow personnel to stay or pass un-
der a suspended load.
- After lifting or tensioning, a load must not
be left unattended for a longer period of time.
- After lifting or tensioning, a load must not
be left unattended for a longer period of time
- Start moving the load only after it has been
attached correctly and all personnel are clear
of the danger zone.
- The operator must ensure that the load is
attached in a manner that does not expose
himself or other personnel to danger by the
hoist, chain(s) or the load.
- The hoists can be operated in ambient tem-
peratures between -10
°
C and + 40
°
C.
Consult the manufacturer in case of extreme
working conditions.
Note:
At ambient temperatures below 0
°
C
the brake should be checked for freezing.
- The air gap between trolley side plate and
carrying beam must be 2-3 mm in order to
avoid a potential source of ignition.
- In case of operational turning of loads as
standard, the bottom blocks have to be pro-
vided with swivel hooks supported by axial
bearings. In case of queries consult the
manufacturer.
- Trolleys should be generally provided with
buffers in order to exclude a possible source
of ignition.
- In order to ensure correct operation of man-
ual hoists, not only the operating instructions,
but also the accident prevention act valid for
the country and area where the product is
used, have to be adhered to.
- Maintenance jobs as well as the annual in-
spection may carried out in Ex free areas
only.
- In case of functional defects stop using the
hoist immediately.
- Trolleys must be operated on horizontal car-
rying beams only. Operation on sloped
beams is not permitted.
- The units must not be operated in aggres-
sive atmospheres.
INCORRECT OPERATION
(Examples)
----- Do not exceed the rated capacity of the hoist
or the carrying construction.
- Welding on hook and load chain is strictly
forbidden. The load chain must never be
used as ground connection during welding
(Fig. 2).
- Avoid side pull, i.e. side load on either hous-
ing or bottom block (Fig. 3).
- The load chain must not be used for lashing
purposes (sling chain) (Fig. 4).
- It is forbidden to use this product for the
transportation of people (Fig. 5).
- Do not knot or shorten the load chain by
using bolts/screws/screw drivers or other
devices (Fig. 6).
- Do not repair load chains which are firmly
installed in hoists.
- Do not remove the safety latch from the top
or bottom hooks (Fig. 7).
- Never attach the load on the top of the hook
(Fig. 8).
- Do not use the chain end stop (Fig. 11) as
