5
UTD.123.2019-10.00_EN
−
rotation or loosening of the gear reducer from shaft end of driven machine following to accidental
breakage of the reaction arrangement;
−
the accidental breakage of shaft end of driven machine.
If deviations from normal operation occur (temperature increase, unusual noise, etc) immediately
switch off the machine.
Installation
An incorrect installation, an improper use, the removing or disconnection of protection devices, the lack
of inspections and maintenance, improper connections may cause severe personal injury or property
damage. Therefore, the products must be moved, installed, commissioned, handled, controlled, serviced
and repaired
exclusively by responsible qualified personnel
.
In the case of installation in places where there may be the formation of stray currents (eg: near electric
railway networks, large welding plants, electrical installations with high currents and radio frequencies,
etc.), it is appropriate to take adequate precautions to avoid consequences.
The skilled personnel must be
specifically instructed
and have the necessary experience to
recognize
any risks
connected with present products avoiding any possible emergencies.
In this regard, see the standard IEC / EN 60079-14 "Explosive atmospheres - Part 14: Design, selection
and installation of electrical systems", in particular Annex F "knowledge, skills and competences of the
responsible persons, of the operational and of the designers.
Gear reducers and gearmotors of present handbook are normally suitable for installations in industrial
areas: additional protection measures, if necessary, must be adopted and assured by the personnel
responsible for the installation.
Attention!
Motors in non-standard design or with constructive variations may differ in the details from the
ones described here following and may require additional information.
Attention!
For the installation use and maintenance of the
electric motor
(standard, brake or non-standard
motor) or of the possible motor-variator and/or the electric supply device (frequency converter, soft-start,
etc.), and/or any optional electric devices (e.g.: independent cooling unit, etc.), consult the specific attached
documentation. If necessary, require it.
Maintenance
When operating on gear reducer or on components connected to it the machine must be at rest: disconnect
motor (including auxiliary equipments) from power supply, gear reducer from load, be sure that safety
systems are on against any accidental starting and, if necessary, pre-arrange mechanical locking devices
(to be removed before commissioning).
Attention!
During the running the gear reducers could have
hot surfaces
; Always wait that the gear
reducer or the gearmotor to cool before carrying out any operations.
ATEX requirements
For whatever operation (assembling, disassembling, cleanness, maintenance) use tools and procedures
which will not cause explosion (e.g.: sparks). When using electric equipment (portable working lights,
vacuum cleaner, etc.) be sure that they are cer tified according to ATEX directive and suitable to the area.
Whenever the gear reducer/gearmotor is disassembled, moved and mounted to another installation, or
modified, e.g. with the application of a different motor (see table 7.1),
check whether it is compatible
with the new installation and classification of the area, as well as its suitability for the envisaged
service as indicated by the service specifications
(fs, radial loads, ch. 7.15), thermal power
P
t (ch. 7.16),
radial loads, etc.).
When a bearing lubrication pump is present in G gear reducers ("P" code stated on name plate, see DESIGN)
it is necessary
to avoid
input speeds lower than n1= 355 min-1, consult us if need may be.
This handbook «ATEX operating instructions» and its enclosures, if any, must be kept close to the
gear reducer or gearmotor in order to be easily consulted.
Further technical documentation (e.g. catalogs) can be downloaded from our website www.rossi.com or can
be directly required to Rossi. For any clarification and/or additional information consult Rossi and specify
all name plate data.
