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Installation, operation and maintenance instructions
High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
General information about the installation and safety operation
guaranteed and verified. Look at the nameplate and
the specific Instruction Manual to check for special
characteristics and motors' design provided for
operation in ambient temperatures outside the a.m.
limits.
1.4.1.3 TRANSPORTATION AND STORAGE
We recommend carrying out an accurate inspection
of the motors when they reach the installation site, in
order to discover any possible damages.
In case any damages (occurred after the factory
delivery) would arise, notify immediately the problem
to the Body responsible for the transportation and
draw up, together with a representative of this Body
(if possible), a detailed report. In case of suspected
internal damage stop any commissioning operation.
The lifting ring hooks are dimensioned for the weight
of the motor, so do not apply additional loads. Fully
screw the threaded shank of the ring hooks (if any)
before any lifting movement.
If necessary, suitable and adequately dimensioned
means of transport (i.e. rope guides) can be used,
providing their proper fixation and operation.
Remove the shaft-locking device and other devices
provided for the transportation safe before the
commissioning. Store them for reuse in case of
further movements.
When the motors are stored, make sure that the
storing area is dry, dust-free and that the vibration
self-level of the storing basement is less than 0.2
mm/sec (Vrms) to avoid possible damages of the
bearings.
Measure the insulation resistance of the stator
winding before the first run using instrumentation
having output voltage between 500 and 2500 Volt
d.c.
If the measurement gives value of R
Volt of rated voltage, proceed with drying the
windings. Refer to the relevant Chapters of this
Manual for measuring methods and the suggested
techniques for drying.
1.4.1.4 INSTALLATION
The installation on site of the motors shall be done in
accordance with the requirements of the IEC/EN
60079-14 Standard.
REMARK! The personnel in charge with the final
checks and the formal authorization for putting
the machines into service
operation on the plants in areas where a gas
explosion danger can exist must be skilled and
qualified.
sufficient knowledge of the applicable Acts,
Rules and Standards and of the general
principles
classification;
attended specific training regarding the required
protection
techniques.
Make sure of even base supporting surfaces, solid
foot or flange mountings and of the exact alignment
in case of direct coupling with the driven machine, in
accordance with the recommendations of this Manual
(see the relevant Chapter).
The responsibility of design and construction for the
support foundation of the motors lies on the civil
engineer in charge.
Avoid
that the supporting
mechanical resonance with the rotational frequency
and the double of the mains' frequency.
The dowel pins (if any) shall be positioned on the
basement only after the good result of the alignment
operation.
REMARK! Basement must always be provided
with dowel pins to avoid horizontal movements.
Turn the rotor by hand and listen for abnormal
slipping noise. With the motor uncoupled from the
≤ 1 kΩ per
insul
driven machine check correct direction of rotation
(see also the "electrical wiring" par.).
During the assembly and disassembly of the coupling
joint (or other driving components) carefully follow
the Manufacturer instructions. All the rotating parts
must be covered and protected against accidental
contacts. Avoid excessive axial and radial loads on
the bearings.
The balancing of the rotating bodies is always done
with an "half key", so the coupling joint has to be
balanced with the "half key" too.
Make sure of the right shape and dimensions of the
ventilation channels, if any.
For vertical motors the installer and the user must
verify that the provided upper protection of the air
intake is sufficient to assure the protection from
foreign objects that can fall into the fan hub.
The air intake shall be fully free and it is important to
verify that the a.m. air intake doesn't suck the hot air
Sheet No.
3AAM101025 E
Rev. C
Page 5 of 10
and with the
The
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the
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moreover,
they
shall
modes
and
the
installation
system
can
Issued by: MOLM
01.2023
have
area
have
have
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