Donati DRH 1 Series Instructions For Use Manual Download Page 41

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drhrib

MAN16MG05

instructions

for

use

series

drh

1/2/3/4 -

dst

drt

3.5.2 Safety and emergency devices

The DRH electric wire rope hoists and related trolleys are fitted with the following devices (fig.8):

A) Mechanical

brakes

of negative type on the lifting and travelling motors, respectively for ascent/descent

and right/left manoeuvres, which intervene automatically if the power supply fails.

B) Electric lifting(B1) and travelling (B2)

limit switches

which limit the hook run of the hoist and the trolley

run, respectively for the ascent/descent and right/left manoeuvres.

C) The

overload device

, at an intervention threshold, installed on the anchorage of the hoist measures and

checks constantly the reading of the load thus preventing overloads.

If the imposed calibration readings are exceeded, the micro switch of the device intervenes by opening

the control circuit of the control devices for dangerous movements.

D) The

emergency stop

, situated on the push-button panel, is red and mushroom-shaped, and when it is

pressed down completely it activates the

stop

function stopping any movement.

WARNING!

1) When the hoist and related trolley are supplied WITHOuT controls:

• The limit switches and overload device are not connected!

Before putting into service the hoist, it is compulsory to connect the devices checking that the limit switches

and overload device operate correctly, as described in paragraph 4.5 “Setting up the machine”

2) When the hoist and trolley are supplied with any control panel:

• The load limiter is connected in such a way that, on overload, is arrested only the upward movement.

Therefore, in case of intervention of the limiter, the operator must operate exclusively the lower movement to

disengage the load, taking care to avoid to control any other horizontal movement (translation, sliding,

rotation).

fig. 8

instructions

for

use

series

drh

1/2/3/4 -

dst

drt

MAN16MG05

3.5.3 Warning and signalling devices - List of labels

The DRH electric wire rope hoists and related trolleys are fitted with the following labels (fig. 9):

•

Labels

on the machine:

• label indicating the maximum lifting capacity of the hoist (fig. 9A)
• label of hoist data with the CE mark - (fig. 9B)
• label of trolley data (fig. 9C)
• label of overload device calibration details (fig. 9D)
• label of lifting motor (fig. 9E)
• label of travelling motor (fig. 9F)
• label of hook block with lifting capacity and FEM service group (fig. 9G)
• low tension equipment label when provided (fig. 9H)
• logotype of the manufacturer (fig. 9I).

Legibility and conservation of the labels

The labels and the data written on them must always be kept legible and must be periodically cleaned.
If a label deteriorates and/or is no longer legible, even only in one of the shown elements, then we recommend
requesting another from the manufacturer, quoting the data contained in this manual or on the original label, and
providing for its replacement.

fig. 9

ELECTRIC WIRE ROPE HOIST DRH SERIES

Manufact. n°

VARESE - ITALIA

VIA ROMA 55 - 21020 DAVERIO

DONATI SOLLEVAMENTI s.r.l.

Year

GR. FEM

R.I. %

Speed m/min

Hoist mass kg

Type