GEA Ariete NS3015P Instruction Manual Download Page 308

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Unless otherwise agreed in the order, products are adequately

packed: on pallet, protected with a polyethylene film, wound with

adhesive tape and strap (bigger sizes); in carton pallet, wound with

adhesive tape and strap (smaller sizes); in carton boxes wound with

tape (for small dimensions and quantities). If necessary, gear redu-

cers are conveniently separated by means of anti-shock foam cells or

of filling cardboard.
Do not stock packed products on top of each other.

4 - Storing

Surroundings should be sufficiently clean, dry and free from ex-

cessive vibrations (

eff

0,2 mm/s) to avoid damage to bearings (ex-

cessive vibration should also be guarded during transit, even if within

wider range) and ambient storage temperature should be 0

+40 °C:

peaks of 10 °C above and below are acceptable.
The gear reducers filled with oil must be positioned according to the

mounting position mentioned on the order during transport and storage.
Every six months rotate the shafts (some revolutions are sufficient)

to prevent damage to bearings and seal rings.
Assuming normal surroundings and the provision of adequate pro-

tection during transit, the unit is protected for storage up to 1 year.
For a 2 year storing period in normal surroundings it is necessary to

pay attention also to following instructions:
– generously grease the sealings, the shafts and the unpainted

machined surfaces, if any, and periodically control conservation

state of the protective anti-rust oil;

– for gear reducers and gearmotors supplied without oil: insert anti-

condensation pastilles into the gear reducers to be replaced befo-

re due date and remove them before commissioning (as alternati-

ve completely fill the gear reducers with lubrication oil and the

specified level before commissioning).

For storages longer than 2 years or in aggressive surroundings or

outdoors, consult Rossi.

5 - lnstallation

5.1 - General

Before the installation, verify that:
– there were no damages during the storing or the transport;
– design is suitable to the environment (temperature, atmosphere,

etc.);

– electrical connection (power supply, etc.) corresponds to motor

name plate data;

– used mounting position corresponds to the one stated in name

plate.

Attention!

When lifting and transporting the gear reducer

or gearmotor use through holes or tapped holes of the

gear reducer casing; be sure that load is properly balanced

and provide lifting systems, and cables of adequate sec-

tion. If necessary, gear reducer and gearmotor masses are stated

in Rossi technical catalogues.
Be sure that the structure on which gear reducer or gearmotor is

fitted is plane, levelled and sufficiently dimensioned in order to assu-

re fitting stability and vibration absence (vibration speed

eff

3,5

mm/s for

15 kW and

eff

4,5 mm/s for

> 15 kW are accep-

table), keeping in mind all transmitted forces due to the masses, to

the torque, to the radial and axial loads.
For the dimensions of fixing screws of gear reducer feet and the

depth of tapped holes consult the Rossi technical catalogues.
Carefully select the length of fixing screws when using tapped holes

for gear reducer fitting, in order to assure a sufficient meshing thread

length for the correct gear reducer fitting to the machine without

breaking down the threading seat.

Attention! Bearing life and good shaft and coupling
running depend on alignment precision between the
shafts.

Carefully align the gear reducer with the motor and

the driven machine (with the aid of shims if need be, for

gear reducers size

400 use level tapped holes), interposing flexible

couplings whenever possible.

Incorrect alignment

may cause

breakdown of shafts and/or bear-

ings

(which may cause overheatings) which may represent

heavy

danger for people

Do not use motor eyebolts when lifting the gearmotors.
Position the gear reducer or gearmotor so as to allow a free passage

of air for cooling both gear reducer and motor (especially at their fan

side).
Avoid: any obstruction to the air flow; heat sources near the gear

reducer that might affect the temperature of cooling air and of gear

reducer (for radiation); insufficient air recycle and applications hinder-

ing the steady dissipation of heat.
Mount the gear reducer or gearmotor so as not to receive vibrations.
Mating surfaces (of gear reducer and machine) must be clean and suffi-

ciently rough (approximately

6,3

m) to provide a good friction

coefficient: remove by a scraper or solvent the eventual paint of gear

reducer coupling surfaces.
When external loads are present use pins or locking blocks, if ne-

cessary.
When fitting gear reducer and machine and/or gear reducer and even-

tual flange

it is recommended to use

locking adhesives

on the

fastening screws (also on flange mating surfaces).
Before wiring-up the gearmotor make sure that motor voltage corre-

sponds to input voltage. If direction of rotation is not as desired,

invert two phases at the terminals.
Y-

starting should be adopted for no-load starting (or with a very

small load) and for smooth starts, low starting current and limited

stresses, if requested.
If overloads are imposed for long periods or if shocks or danger of

jamming are envisaged, then motor-protection, electronic torque li-

miters, fluid couplings, safety couplings, control units or other similar

devices should be fitted.

Usually protect the motor with a thermal cut-out

however,

where duty cycles involve a high number of on-load starts, it is nec-

essary to utilise

thermal probes

for motor protection (fitted on the

wiring); magnetothermic breaker is unsuitable since its threshold

must be set higher than the motor nominal current of rating.

Connect thermal probes, if any, to auxiliary safety circuits

Use varistors and/or RC filters to limit voltage peaks due to con-

tactors.
When gear reducer is equipped with a backstop device

, provide a

protection system where a backstop device breaking could cause

personal injury or property damage.
Whenever a leakage of lubricant could cause heavy damages, increase

the frequency of inspections and/or envisage appropriate control devic-

es (e.g.: remote level gauge, lubricant for food industry, etc.).
In polluting surroundings, take suitable precautions against lubricant

contamination through seal rings

or other.

For outdoor installation or in a hostile environment (atmospheric cor-

rosivity category

according to ISO 12944-2), protect the gear

reducer or gearmotor with a proper dual-compound anticorrosion paint;

added protection may be afforded by applying water-proof grease

(especialIy around the rotary seating of seal rings and at shaft end

access points).
Gear reducers and gearmotors should be protected whenever pos-

sible and by appropriate means from solar radiation and extremes of

weather: protection

becomes essential

when high or low speed

shafts are vertically disposed or when the motor is installed vertical

with fan uppermost.
For ambient temperature greater than +40 °C or less than 0 °C, con-

sult Rossi.

When gear reducer or gearmotor is supplied with water cooling by

coil or independent cooling unit, see ch 7.

1) The presence on gear reducer of backstop device is stated by the arrow near the low

speed shaft, indicating the free rotation, excluding shaft mounted gear reducers where

B or C designs are stated (see Rossi technical catalogues).

Designation (see

table on the right)

Non-standard designs

Motor power

Gearmotor

output speed

Gear reducer

nominal power

Two months and year

of manufacture

Mounting position (when

differing from IM B3

or B5)

Gearmotor

service factor

Transmission

ratio

Ø Flange - motor

shaft

Fig. 1 (for more information, see Rossi technical catalogs; consult us).

Designation

Product

Machine Train of gears

Size

Design

R, MR

V, IV, 2IV

32 ... 250 UO ...

Worm

R, MR

2I, 3I

32 ... 180 FC ..., PC ..., UC ...

Coaxial

R, MR

I, 2I, 3I, 4I

40 ... 631 UP ...

Parallel shafts

R, MR

CI, ICI, C2I, C3I 40 ... 631 UO ...

Right angle shafts

80 ... 320 PO ..., FO ...

Right angle shafts

85 ... 250 OP

Shaft mounted

Note

: Starting from 04/05/2010 the company name ROSSI MOTORIDUTTORI S.p.A. has been changed into Rossi S.p.A., and the nameplates have been updated accordingly.

Attention!

for the maintenance, installation of gear reducers coupled with synchronous and asynchronous servomotors (even if with a different name plate) follow the instructions of present handbook.