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MAN16MG05

instructions

for

use

series

drh

1/2/3/4 -

dst

drt

The electric rope

hoist is a machine which is usually used to lift an unguided load vertically with a hook or using

suitable engagement accessories.

When the hoist is combined with a

trolley

, which runs up at a height along one or two girders, it can ensure both

lifting and horizontal movement of the load.

All lifting movements (ascent and descent) and transverse movements (right and left)

must be activated electrically

and can be controlled either with the push-button panel or remote control.

The electric rope hoist and the relative trolleys

, installed at a height, can equip a monorail or be the lifting unit of

other machines in which they are incorporated, such as: overhead travelling crane, gantry, and jib cranes, etc. in single

girder and double girder versions.

Furthermore,

the electric rope hoist

, placed at a height or on the ground, can be used in various fixed – position

configurations.

Two

main movements are possible:

•

vertical

; lifting of the load with a hook and movement of the ropes of the electric hoist

•

horizontal

; translation of the load through movement of the electric trolley along the girder.

These movements can be controlled with (fig. 102):

• push-buttons or actuators of

ascent

and

descent

for lifting the hoist (main and auxiliary)

• push-buttons or actuators of

right

and

left

for

trolley transverse

(main and auxiliary)

They activate the function when held down and the control for low auxiliary speeds for lifting and translation can be

activated in the following ways:

•

with separate actuators

which keep the “high” and “low” speed controls separate.

•

with a single actuator

with two positions, the first position is the “low” speed control and the second

position is the “high” speed.

The push-button panel

, when supplied,

has an emergency stop button

, which is red and mushroom-shaped,

which activates the stop function when pressed right down.

To allow the hoist to work it is necessary to bring the

emergency stop

button to its most “raised” position and then

push the start

buttons

. The push-button panel can be used by the operator on the ground while following the

translation movement of the trolley. The hoist can also be controlled through a remote-control system, the functions

of the buttons are the same as the ones on the pendant push-button panel.

5. - FUNCTIONING AND USE OF THE HOIST

5.1.1 Intended use – Foreseen use – Designated use

•

When the hoist is controlled using the remote-control the push-button panel is not attached to the

hoist itself, therefore, the operator must always take the utmost care during manoeuvres and

never lose sight of the work area or of the load being moved so as not to threaten his own safety

and/or that of other people present

• It is forbidden to control the hoist and/or trolley while sitting or standing on it (fig. 103).

fig. 102

fig. 103

5.1

Functions of the hoist

instructions

for

use

series

drh

1/2/3/4 -

dst

drt

MAN16MG05

5.1.2 Permitted loads, loads not permitted

The loads must:

• Be of a form, dimensions, mass, balancing and temperature suitable to the characteristics of the place in which they

will be handled and they must be compatible with the performance of the hoist.

• Have suitable handling points and/or fitted with accessories which prevent accidental falls.
• Be stable and not subject to changing their static or physical configuration during handling.

5.1.3 Lifting accessories

The following are usually allowed:

• Slings consisting of ropes and/or chains and/or strips made of textile fibres
• Lifting accessories which are located between the load and the lifting hook including: balances, plies, holdfasts,

magnets and electromagnets, etc.

• The use of such accessories must strictly comply with the specifications supplied by the manufacturers.

Handling of the following loads in not permitted:

• one with a weight greater than the nominal capacity of the hoist (fig. 104)

• with an uneven mass with respect to the centre of gravity.

• with surfaces which are not resistant enough to withstand the pressure of the hold.

• those which are classified as dangerous (e.g. flammable, explosive, radioactive material), because

of their chemicophyisical characteristics.

• harmful toxic materials or products, unless handled in suitable safety containers (e.g.: corrosive

chemical products, products having biological risks, etc.).

• loose foodstuffs, which may come into direct contact with parts of the hoist or with its lubricants.

• those which may change their static and/or chemicophisycal configuration or their centre of gravity