Installation Method; Adjusting The Centrifugal Force; Maintenance; Lubricating The Bearings - Venanzetti Vibrazioni Milano VV-E Serie Uso Y Manutención

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ENANZETTI

IBRAZIONI

Important: consult standards, Directives, the

technical data, electrical characteristics, rated

current and starting power draw when choosing

the electrical equipment to start/stop the machine

and protect against overloads. Also opt for delayed

magnetothermic switches to prevent release

during the starting phase which may be longer at

low ambient temperatures.

DANGER

IN ZONES 21 AND 22

IN ZONES 21 AND 22 (DUST EXPLOSIVE

IN ZONES 21 AND 22

(DUST EXPLOSIVE

ATMOSPHERES)

OBLIGATORY

ATMOSPHERES)

OBLIGATORY

CONNECTION OF THE THERMISTOR TO AN

APPROPRIATE CONTROL EQUIPMENT.

NSTALLATION METHOD

INSTALLATION METHOD

NSTALLATION METHOD

For the mentioned vibrator is recommended an

ambient temperature included between -10°C and

the maximum value indicated in the nameplate

(Max.Amb.).

DANGER

The ambient temperature must never exceed the

value indicated on the nameplate.

The maximum allowable operating temperature is:

GAS (Zones 1 and 2): 135°C for the temperature

class T4 and 200°C for the temperature class T3

DUST (Zones 21 and 22): 120°C.

The motor is designed for these classes:

CENELEC EEx e II T4 or T3 (G), 120°C (D)

1. Wipe all warning plates clean (Fig.2, page 2). If

plates are not readable, contact Venanzetti Vi-

brazioni Milano or distributor for replacements.

2. Start vibrator(s).

3. Always make sure that the voltage and frequency

values of the power main correspond to those

indicated on the data plate of the motor-driven

vibrator before powering.

4. Check the power draw of the motor-driven

vibrator. If the value exceeds the data plate

indication, reduce the weight regulation and

reinforce the structure. After the modification

has been made, make sure that the power draw

is the same or lower than the data plate value.

CAUTION

The current draw must not exceed the relative

rated current value indicated on the data plate to

avoid overtemperature or motor-driven vibrator's

damaged.

5. If the motor-driven vibrator is unusually or

excessively noisy, disconnect it from the power

source then make sure that the bolts are well

tightened and that the welds on the structure are

not defective.

6. Check the bolts and, if necessary, tighten them

again before each use.

IMPORTANT

Removal of any part on VV-E Electric Vibrator

other than weight cover or terminal box cover by

any shop other than Vibrazioni Venanzetti Milano

Company will void CENELEC Approvals.

ATTENTION

Is extremely important to check the condition of

the bearing to avoid that an excessive wear cause

the unbalancing of the shaft and the danger of

stripment of the rotor with the stator. Then if is

noted an increasing noise, remove the weight

covers and the weights and turn manually the

ILANO

ENGLISH

shaft, verifing that is free to turn. In case of

troubles always contact Venanzetti Vibrazioni

Milano.

ADJUSTING THE CENTRIFUGAL FORCE

To regulate the intensity of the centrifugal force of

the vibrators, the weights at the two ends of the shaft

must be adjusted in the following way:

A) A) Disconnect the vibrator from the power source

A) A)

as specified by CENELEC standards;

B) B) Remove the two side covers;

B) B)

C) C) Slacken off the two bolts that fix the adjustable

C) C)

weights;

C) C) Turn the weights until the desired maximum force

C) C)

percentage appears on the centrifugal force indi-

THE

cator.

Make the same adjustments on both sides.

Both the adjustable weights at the two ends must

make the same movement to prevent the forces and

resultant moment from damaging the structure on

which the vibrators are installed.

When a Venanzetti vibrator is used for a feeder or

screen, the current supplied to the vibrator itself will

usually not exceed the rated value since the effect of

the elastic constant and the dampening coefficient

is low. Owing to the particular application, the cur-

rent could, however, exceed the rated value and dam-

age the stator winding or provoke unnecessary

activations. In this case, the position of the weights

must be set to a lower centrifugal force value so that

the power draw drops below the current rating.

E) E) E) E) E) Re-tighten the fixing bolts of the weights with the

driving torque indicated in the "Driving torques"

table.

F) F) F) F) F) Fit the two side covers back on, remembering to

set the OR seal in its correct housing.

MAINTENANCE

ATTENTION

It is absolutely forbidden to carry out maintenance

operations.

The only possible interventions are

operations. The only possible interventions are

operations.

The only possible interventions are

weight adjustment with removal of the weight

covers, electrical connection with removal of the

terminal board cover and re-lubrication of the

bearings.

Periodically check to make sure that the fixing bolts

are always tightened to the torque value indicated in

the "Driving torques" table. It is essential to check

this before starting and after the first three hours

service.

All Venanzetti vibrators are supplied already lu-

bricated prior to delivery and ready for installa-

tion.

LUBRICATING THE BEARINGS

Venanzetti vibrators feature "LONG LIFE" lubrication.

They therefore do not need to be lubricated again

during operation and can proceed until the bearings

have completely worn out in the case of ball bear-

ings, or for 5000 hours in the case of roller bearings.

After this, the bearing grease must be completely

changed.

There are, however, particular applications where

stress on the bearings and on the grease that lubri-

cates them is very heavy owing to a sum of factors

such as a high ambient temperature, a high rpm rate

(2 poles) continuous round-the-clock service, a high

centrifugal force value and so forth. For these uses,

Venanzetti Vibrazioni Milano recommends frequent

periodic re-lubrication which can lengthen the life of

the bearings by a considerable number of hours, thus

reducing the running costs of the vibrator. This is

why re-lubrication channels have been created on

Venanzetti vibrators. These can be used to insert

grease from the outside without needing to demount

the vibrator from the vibrating machine and particu-

larly, without having to demount any parts from the

vibrator.

PERIODICAL INSPECTIONS

EACH DAY:

Check the charging current

Check the charging current. When measured, the

Check the charging current

charging current must be less than the current rat-

ing.

Check the noise from the bearings. The bearings

Check the noise from the bearings

must not produce intermittent or metallic noises.

EACH MONTH:

Fixing bolts

Fixing bolts. Make sure that the bolts have not slack-

Fixing bolts

ened off. Tighten the bolts with a torque wrench.

Cables. Visually check the cables to make sure they

Cables

are not damaged.

EACH YEAR:

Coil insulation

Coil insulation. The insulation resistance must be

Coil insulation

more than 5 Mohm.

ATTENTION

Periodically and regularly, the user will have to make

sure of the good condition of the bearings and in any

case the user can't go over the maximum theoretical

bearing life, estimated in the tables in pages 8-9.

DISMANTLING

If the vibrator must be dismantled, proceed by sepa-

rating it into homogeneous parts which must then be

disposed of in compliance with the current laws gov-

erning the disposal of special waste. Any lubricants

or detergents must be disposed of according to their

type.

Only have the components disposed of by special-

ized and authorized companies which must issue a

receipt attesting to effective disposal.

SPARE PARTS

Venanzetti Vibrazioni Milano doesn't provide spare

parts for increased safety vibrators.

For safety reasons the repairs have to be carried out

directly by Venanzetti Vibrazioni Milano.

CONSTRUCTION MATERIALS

The increased safety vibrator is mainly manufactured

with the following materials:

- aluminium SG-AlSi9Cu1 UNI 7369/3, EN AB 46400

(holding lesss than 6% of magnesium)

- grey cast iron (EN 1561);

- spheroidal graphite cast iron (EN 1563);

- steel 39NiCrMo3 (vibrator shaft);

- stainless steel (AISI 304).

When installing the vibrator the user has to take this

in consideration an has to avoid installation in areas

where the intergrity of the vibrator may be

compromised by the external atmosphere that it is

likely to come in contact with.

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Installation Method; Adjusting The Centrifugal Force; Maintenance; Lubricating The Bearings - Venanzetti Vibrazioni Milano VV-E Serie Uso Y Manutención

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INSTALLATION METHOD

(Max.Amb.).

IMPORTANT

ADJUSTING THE CENTRIFUGAL FORCE

MAINTENANCE

LUBRICATING THE BEARINGS

PERIODICAL INSPECTIONS

DISMANTLING

type.

SPARE PARTS

CONSTRUCTION MATERIALS

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Productos relacionados para Venanzetti Vibrazioni Milano VV-E Serie

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