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4.3. RELEASING THE WIRE ROPE UNDER LOAD (Figure 4)
The brake prevents tied load from sliding back, when you stop the pull. To release the
stretched wire rope,
quickly
push and release the »
brake release
« button repeatedly to
prevent the drum from uncoiling suddenly and loosening the coiled wire rope.
If the wire rope on the drum gets loose, the outer coils of the wire rope get under the inner
coils at the repeated pulling, and the wire rope gets damaged quickly.
(See: Coiling the wire rope tightly onto the drum.: 4.4.1.).
EMERGENCY STOP (Control Console
Type B
)
By pushing the »
Emergency Stop
« button, the pulling and wire rope release functions are
stopped. The button mechanically locks in the pushed position. In this position the pulling or
wire rope release functions do not work. Turn the button slightly to the right to disengage the
emergency stop. In case any function button is pushed when the emergency stop is
disengaged, the machine will detect the malfunction and prevent the »pushed« button from
operating.
The nominal pulling
is the highest power achieved by the winch with the first layer of coils on
the drum. It is defined in the technical data section of this operating instructions and on the
type plate of each winch. By increasing the number of coil layers on the drum, the pulling
power decreases. With the full drum the pulling power comes to 50 % to 60 % of the nominal
pulling power.
It is useful to know that at the constant drive power, the pulling power depends on the length
of the wire rope coiled to the drum. The strongest pulling power is achieved at the first layer of
coils. By multilayer coiling the pulling power decreases progressively. The pulling power
changes in inverse proportion to the pulling speed, which is highest when the wire rope if fully
coiled.
Emergency Stop
Brake release
Pull
Control Console Type B
Control Console Type A
4
Wire rope
release
Pull
Brake release
0 I
