Rossi TX11 HB Series Operating Instructions Manual Download Page 9

Page: 9 / 28

Rossi

TX11 Operating instructions − UTD.164.06-2012.00_IT_EN

4.4. Protections and packing

Free shaft ends are treated with long-life protective anti-rust long life oil.
Unless otherwise agreed in the order, motors are adequately packed:

on pallet, protected with a polyethylene fi lm, 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, motors are conveni-

ently separated by means of anti-shock foam cells or of fi lling card-

board.
Do not stock packed products on top of each other.

5. Storage

Surroundings should be suffi

ciently clean, dry and free from cor-

rosive media and excessive vibrations (v

eff

0,2 mm/s) to avoid

damage to bearings (excessive vibration should also be guarded

during transit, even if within wider range) and ambient storage tem-

perature should be 0 ÷ +40 °C with peaks of - 20 °C and + 50 °C.

Always protect the motor from humidity.
Every six months rotate the shafts (some revolutions are suffi

cient;

release the brake in case of brake motor) 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

generously grease the sealings, the shafts and the unpainted ma-

chined surfaces, if any.
For storages longer than 2 years or in aggressive surroundings or

outdoors, consult Rossi.

6. Installation

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;

– the motor has not been exposed to humidity (check insulation

resistance, see ch. 6.2).

Attention!

For lifting and transporting the motor use the

motor eyebolts (when provided) keeping in mind that these

are suitable only for lifting the motor and not other ma-

chines fi tted to it; be sure that load is properly balanced and provide

lifting systems, and cables of adequate section. If necessary, motor

masses are stated in Rossi technical catalogs.

6.1. Mechanical installation

Be sure that the structure on which motor is fi tted is plane, levelled

and suffi

ciently dimensioned in order to assure fi tting stability and

absence of vibration induced on the motor itself (vibration speed

eff

3,5 mm/s for P

15 kW and v

eff

4,5 mm/s for P

> 15 kW

are acceptable), keeping in mind all transmitted forces due to the

masses, to the torque, to the radial and axial loads.
When using tapped holes for motor fi xing (B14 fl ange) carefully

select the length of fi xing screws, in order to assure a suffi

cient

meshing thread length for the correct fi xing without breaking down

the threading seat and without aff ecting the correct motor fasten-

ing to machine.
For the dimensions of fi xing screws and the depth of tapped holes

see Rossi technical documentation.

Attention! Bearing life and good shaft and coupling

running depend on alignment precision between the

shafts.

Therefore carefully align the motor and the driven

machine (with the aid of shims if need be), interposing fl exible cou-

plings whenever possible.

Incorrect alignment

may cause

breakdown of shafts

(which

may represent

heavy danger for people

)

and/or bearings

(which

may cause overheatings).
Mating surfaces (fl ange or feet) must be clean and suffi

ciently

rough (approximately R

6,3 μm) to provide a good friction coeffi

cient: remove by a scraper or solvent the possible paint of coupling

surfaces.
When external loads are present use pins or locking blocks, if neces-

sary.
When mounting the motor on the machine, it is recommended to

use locking adhesives on the fastening screws and on mating sur-

faces.
Position the motor so as to allow a free passage of air (on fan side)

for cooling. Therefore it is necessary to avoid:
– any obstruction to the air fl ow;
– heat sources near the motor that might aff ect the temperature of

cooling air and of the motor (for radiation);

– in general, insuffi

cient air recycle and applications hindering the

steady dissipation of heat.

For

outdoor installation

, in presence of

dump

or corrosive envi-

ronments the IP55 protection degree is not enough to guarantee a

proper application. In this case, be sure that:

– the motor is equipped with the

condensate drain holes

, in

the right position (downwards) and always open (except during

washes);

– the brake is with «Design for damp and corrosive environment»

(«

,UC

» code stated on name plate , HBZ and HBF motors) and

with «Stainless steel bolts and screws of brake» («

,DB

» code stat-

ed on name plate, HBZ motor);

– the

anti-condensation heater

, if present, is properly connected

(see fi g. 3) for at least 2 hours before the motor starts running

(never supply the heater during motor operations); as an alterna-

tive, a single-phase voltage equal to approx. 10% of the nominal

connection voltage applied to U1 and V1 terminals can replace

the heater;

– the motor is protected by whatever appropriate means, from solar

radiation and from weather direct exposure, expecially when it

is installed with vertical shaft upwards and when no drip-proof

cover is present.

Before commissioning

verify the correct tightening of electrical

connections, fastening and fi tting systems.

Fitting of components to shaft ends

It is recommended to machine the hole of parts keyed onto shaft

ends to H7 tolerance.
Before mounting, clean mating surface thoroughly and lubricate

against seizure.
Assemble and disassemble with the aid of

jacking screws

and

pullers

taking care to avoid impacts and shocks which may irreme-

diably damage the bearings (see fi gure below).

M10

M12

M16

M20

In case of direct fi tting or coupling be sure that the motor has been

carefully aligned with the driven machine.
If necessary, interpose a fl exible or elastic coupling.
In case of V-belt drives make sure that overhang is minimum and

that driven shaft is always parallel to machine shaft.
V-belts should not be excessively tensioned in order to avoid ex-

cessive loads on bearings and motor shaft (for maximum loads on

shaft end and relevant bearing life see Rossi catalogs).
Motor is dynamically balanced; in case of standardized shaft end

the balancing is obtained with half key inserted into the shaft end

and exclusively for the nominal rotation speed (in order to avoid

vibrations and unbalances it is necessary that also power transmis-

sions are balanced with half key).
Before executing a possible trial run without output elements, se-

cure the key.
In case of brake motor see also ch. 6.3.

6.2 Braking torque adjustment (HBF

≥

160S)

Motor is normally supplied with a braking torque set at about 0,71