I.VA.CO. SC101MF, SC501MF, SC401MF, SC201MF, SC531MF Operating And Maintenance Manual

OPERATING AND MAINTENANCE MANUAL

SIDE CHANNEL

BLOWERS AND EXHAUSTERS

SC Series

SC101MF - SC201MF - SC301MF - SC401MF - SC431MF - SC501MF - SC531MF
SC601MF - SC631MF - SC602PF - SC701MF - SC731MF - SC802PF - SC901MF ­SC931MF - SC942PF - SC951MF - SC302SF - SC402SF - SC502SF - SC602SF - SC902SF
SC902PF

ORIGINAL INSTRUCTIONS

English

I.VA.CO. Srl
Via delle Brigole, 33 – 23877 Paderno d’Adda (LC) – Italy

www.ivaco.it – [e-mail] - [phone]

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INDEX

1. INTRODUCTION

2. REVIEW OF THE SHIPPING DOCUMENTS

3. WARRANTY

4. GENERAL NORMS FOR SAFETY

5. RESIDUAL RISKS

6. TRANSPORT

7. STORAGE

8. OPERATING PRINCIPLE

9. TECHNICAL DESCRIPTION

ACCESSORIES

10. USE

11. INSTALLATION

11.1 NOISE

12. CONNECTIONS

12.1 CONNECTION TO THE PLANT

12.2 ELECTRICAL CONNECTIONS

12.3 ELECTRICAL CONNECTIONS DRAWINGS

12.4 ACCESSORIES INSTALLATION DRAWING

13. START-UP

ADJUSTMENT

14. MAINTENANCE

14.1 CLEANING

14.1.1 SILENCER ELEMENTS REPLACEMENT

14.2 SEALING RINGS AND BEARINGS REPLACEMENT

15. OPERATING PROBLEMS AND TROUBLE SHOOTING

16. SHUT DOWN PERIOD

17. MACHINE SCRAP AND DISPOSAL

18. REPAIR

19. SPARE PARTS

ATTACHMENTS: EXPLODED ASSEMBLY DRAWINGS WITH PARTS LIST

EU DECLARATION

KLIXSON SPECIFICATION

Distribution, replication and/or editing of this document and the use and/or of its content is prohibited
unless explicitly permitted.

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1. INTRODUCTION

The purpose of this manual is to ease the installation, the operation and the routine maintenance activities
of the SC side channel blowers and exhausters.

This manual must be completely read and understood by all operating and servicing personnel before
beginning with the installation and the start-up of the machine in order to grant the correct functioning and
personnel security.

This manual must be always available at the site of operation of the machine.

WARNING!

These instructions must be strictly observed. Any improper use carried out by unskilled
and/or unauthorized personnel could cause serious damages to the machine and serious
injuries to people, even death!

The Technical and Service Departments are available for any technical assistance or clarification you may
need. Do not hesitate to contact us.

2. REVIEW OF THE SHIPPING DOCUMENTS

When receiving the goods, it is necessary to inspect and check them against the shipping documents. Make
sure that no shipping damages are occurred to the equipment during transportation.

Accessories come loose and have to be mounted before start-up.

3. WARRANTY

The goods related with this instruction manual are free from defects in materials and workmanship. The
warranty period is: twelve months from the date of their initial use or eighteen months from delivery,
whichever expires first (“Warranty Period”).

The warranty covers those parts of the machine that are defective in either materials, construction or
workmanship. The warranty does not cover wearing parts (e.g. bearings and lip seals), defects arising from
chemical corrosion or galvanic action, from misuse or wrong interpretation of the instructions contained in
this manual, or from modifications or repairs not expressly authorized in writing by I.VA.CO. SRL.

Any claims for defects must be made in writing and the purchaser is not entitled to withhold or delay any
payments or cancel any contract as a result of those defects.

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I.VA.CO. SRL wiII not assume any responsibility under the terms of this warranty for equipment which has
not been paid according to the agreed conditions (which are stated in the sales invoice).

Within the warranty period, I.VA.CO. SRL will repair or replace, ex works his factory, those parts which are
determined to be defective.

Within the warranty period, defective parts should be returned to I.VA.CO. SRL, carriage paid, and any parts
repaired or replaced by I.VA.CO. SRL, will be shipped back to the purchaser, carriage forward. I.VA.CO. SRL
wilI not be responsible for any costs arising from the removal and reinstallation of the equipment.

In the unlikely event that the repairs under warranty wiII be carried out in the field, I.VA.CO. SRL will
provide the necessary skilled personnel. It is understood that such services will be charged according to the
rates in force at the time. In such a case, the purchaser will provide I.VA.CO. SRL with all facilities and
assistance necessary for the repair. The purchaser will take all the costs arising from the operations on the
field. It is compulsory that all operations on the field are previously agreed in written with I.VA.CO. SRL.

Within the warranty period, for any product repaired or replaced by others than I.VA.CO. SRL or his
representative, the warranty wiII become void and unenforceable and I.VA.CO. SRL shall not be liable for
any damage, to anything or anybody, that could happen after any unauthorized operation or replacement.

I.VA.CO. SRL shall not be liable for any damage directly or indirectly arising in connection with the machine
non-use during the repair under guarantee. I.VA.CO. SRL shall not be liable for any damage directly or
indirectly arising in connection with the incorrect use of the machines.

In the unlikely event of a break-down due to the malfunctioning of the machine I.VA.CO. SRL should not be
liable for any cost arising from the interruption of the plant process.

4. GENERAL NORMS FOR SAFETY

Before SC blowers and exhausters start-up it is necessary to activate all protection devices for people and
things so that any possibility of hazardous risk is avoided during operation but also during routine
maintenance of the machine and of its accessories.

SC blowers and exhausters shall be used exclusively for the specified duty and within the limitations stated
in the technical-commercial documentation submitted at quotation stage or with the order
acknowledgement.

For any use not covered by this manual, it is necessary to contact the Technical Department in order to get
confirmation of the suitability to the new operating conditions in terms of performance, safety and
duration.

Personnel must always wear suitable safety equipment while working near the side channel machine.

5. RESIDUAL RISKS

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Improper use of SC blowers and exhausters can cause serious injuries.

Danger is due to:

- Suction: side channel blowers and exhausters have a very high suction power. Objects, clothing

and hair can be easily sucked into the fan and cause injuries.

- Discharge side: there is a very powerful stream of air from the discharge side. Foreign objects,

which might have been sucked into the fan, can be expelled at high speed and cause injuries.

- Temperature: when the machine operates the temperature of the housing can exceed 100°C. The

machine has to be protected from any contact in order to avoid burns.

- Rotating parts

- Over-pressure and vacuum

- Motor fan

- Defective or missing silencers

In case of failure, check that all protection and safety devices are functioning and activated, disconnect the
electric power supply and inform the plat personnel responsible for operation.

6. TRANSPORT

SC blowers and exhausters must be transported by adequate equipment suitable to their weight and
packing dimensions and in accordance with the safety standard on force. When transporting, installing and
performing maintenance, it is important to grant a safe lifting of the machine; using serviceable lifting slings
installed and operated by skillful personnel. Any eye bolt or lifting point designed for single part of the
machine shall not be used to lift the complete machine.

7. STORAGE

All SC blowers and exhausters are dispatched with the main connections (like suction and discharge
nozzles), closed by plastic plugs or adhesive disks.

Handle the packing with care avoiding shocks.

Avoid to place heavy loads on top of the boxes.
If the machine has to be stored for a long period (several months) it is advisable to put it back into its

original packaging, which should be accurately closed and stored in a dry, protected and clean area.

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Ambient temperature must be between -15°C and + 40°C. Humidity must not exceed 80%.

Roller motor bearings must be lubricated whenever the machine is stored for more than 2 years under
proper conditions and 1 year under adverse conditions (high humidity, salty air or sand, or dust).

Before the new start-up, check the insulation resistance of the motor. With value ≤ 1 kΩ per volt of nominal
voltage, the winding has dried out.

8. OPERATING PRINCIPLE

Side channel blowers and exhausters have been developed upon the theory of the regenerative downflow.
Both suction and discharge air passages drive to a toroidal chamber, where the radial blade impeller is
located, representing the core of the equipment.
The fluid is forced inside the toroidal channel by the centrifugal energy given by the impeller and released
towards the inner side of the impeller blades where a further acceleration provides the fluid with an
helicoidally trajectory with a consequent progressive increase of energy.
The pitch of the helicoidally trajectory changes in proportion with pressure variation between suction and
discharge. The pitch is able to self-calibrate according to the load acting on the fluid. The gas is free of
pollution and keeps a linear flow without pulsations. The absence of vibrations and a low noise level are
further advantages and contribute to ease the installation.

9. TECHNICAL DESCRIPTION

All SC blowers and exhausters are made of aluminum alloy. Since there is no contact between the static and
rotating components and bearings are life-pre-lubricated no lubrication is needed.

All SC machines are manufactured according to 2006/42/EC, 2006/95/EC, EN ISO 12100:2010 and EN
60204-1:2006+AC:2010 norms, and to EN-61000-6-4:2007 and EN61000-6-2:2005 compliant to
2004/108/EC norm.

ACCESSORIES - Recommended and supplied on demand.

A complete range of accessories is available for all machines: cartridge type filters for blowers, in-line filters
for exhausters, flexible hoses, non-return valves, pressure relief valves for blowers, vacuum relief valves for
exhausters, pressure and vacuum gauges, acoustic enclosures.

10. USE

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SC blowers and exhausters are used to suck, condensate and convey air and gas, or non-explosive, non­flammable, non-aggressive, gas mixtures in a not potentially explosive environment, in continuous
operation.

SC blowers and exhausters are used in both industrial and standard applications.
Is it prohibited to use SC blowers and exhausters:

- In non-industrial installations

- In places in which there are constantly or frequently explosive dust and/or gases

- To suck or convey explosive, inflammable, aggressive, corrosive and/or harmful fluids

- To suck up liquid

- To use the unit under conditions that differ from those indicated on the nameplate

- To operate with the suction and/or delivery openings closed.

It is also prohibited to carry out modifications to the machines.

11. INSTALLATION

SC blowers and exhausters must be installed in an aerated place where the ambient temperature is
between -15/+ 40 C°, humidity 80%, at a maximum height of 1000 m above sea level. When installing at
different conditions, it is necessary to consider the variation of gas characteristics (pressure and weight)
and the downgrade of the motor’s efficiency. Surface treatments on the machine components are needed
whenever humidity exceeds 80%.

If installed outdoors must be protected from sunlight and water stagnation by a protective roof.

Machines can be installed in different positions, as explained in the technical sheet. They are stable and do
not vibrate, but it’s advisable to fix them through anti-vibration elements.

Make sure to leave at least 50 cm around the machine in order to operate freely.

11.1 NOISE

In standard construction SC blowers and exhausters, are equipped with suction/discharge silencers. In case
of suction/discharge into the atmosphere, the noise can be reduced by additional silencer devices.

Do not install the machine on noise-conducting or noise-radiating parts (e.g. tanks, sheet-metal plates).

TAB 1

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MODEL

dB(A)

50 Hz

60 Hz

SC101

50

51

SC201

53

56

SC301

57

60

SC401

63

64

SC501

64

70

SC531

65

71

SC601

69

72

SC601MF2.2M

72

74

SC631

70

73

SC602

74

78

SC701

70

74

SC731

70

74

SC802

74

78

SC901

74

79

SC931

75

80

SC942

75

84

SC951

75

84

SC302

55

61

SC402

66

69

SC502

72

74

SC602

73

76

SC902SF

74

78

SC902PF

74

84

Sound pressure level according to EN ISO 3744, measured at 1 m distance with no vacuum and/or pressure
restriction valve installed. Tolerance ±3 dB(A).

Sound power level LW according to EN ISO 3744. Tolerance ± 3 dB(A).

12. CONNECTIONS

WARNING
All connections must be carried out by trained and specialized personnel.

12.1 CONNECTION TO THE PLANT

Connect the machine to the piping system by flexible connectors, avoiding rigid connections that may cause
mechanical strengths and cause harmful vibrations. The connection pipes must not overload the silencers.

Only remove the sealing plugs immediately before connection.

CAUTION

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Any foreign object, even very small, could enter the machine and cause serious damages, it is therefore
advisable to install a filter.

It is necessary to dismount the flanges in order to connect the accessories.

Choose adequate accessories and correct size of pipes in order to avoid performance losses.

- It is not advisable to install pipes with a diameter smaller than the inlet/outlet connections, in order

to avoid obstructions and overloads;

- The manifold and the main piping must be adequately dimensioned when machines are installed in

parallel;

- High radius curved pipes should be preferred to elbows;

- Do not install valves with internal passage lower than port nominal diameter and spring mounted

check valves (performance losses are lower with clapet valves);

- In case of installation for air distribution, low resistance diffusers shall be preferred.

It is advisable to install a safety valve to avoid pressure overloads.

Connect the motor and check the rotating direction before piping connection.

The shaft direction of rotation is marked by an arrow on the fan guard of the electric motor.

The gas delivery direction is marked with arrows on both suction and discharge connections.

Pay attention not to confuse the suction and the discharge piping.

12.2 ELECTRICAL CONNECTIONS

Electrical connections must be carried out by trained, specialized and authorized electricians
only.

Check that the motor nameplate data matches with the local power supply in terms of voltage, frequency,
phase and absorbed current. In case of three phase power supply, check that the voltage of all phases is
identical.

Connect the motor earthing properly.

Remove the terminal box cover by loosening the fixing screws; connect the wires as indicated in the
instructions or on the inside of the cover and then reposition the terminal box cover and fix it by tightening
the dedicated screws.

12.3 ELECTRICAL CONNECTIONS DRAWINGS

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Three-phase motor single phase motor

Three-phase motors have a rated voltage, AT 50Hz, of 230VΔ/400VY, and they can accept a ± 10% line
voltage variation, according to IEC 38 specification.

The same line voltage variation is allowed for single-phase motors with a rated voltage of 230V at 50Hz.

According to IEC 34 specification a ± 5% line voltage is allowed for motors with any other rated voltage at
50Hz and for any voltage at 60Hz.

All SC blower and exhauster are equipped with a KLIXON thermal protector. (See attached specification),
which must be connected to the main terminal box. Warranty will be void in case of either misconnection
or wrong connection of the KLIXON.

12.4 ACCESSORIES INSTALLATION DRAWING

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SUCTION

COMPRESSION

LEGENDA:

1. SIDE CHANNEL BLOWER/EXHAUSTER 10. METALLIC FILTER

2. VACUUM/PRESURE GAUGE 11. PIPING CONNECTIONS

3. SAFETY VALVE 12. PIPE CONNECTION

4. IN LINE FILTER

5. CARTRIDGE FILTER

6. SILENCER

7. IN LINE SILENCER

8. VACUUM/PRESSURE GAUGE KIT

9. VALVE KIT

13.START-UP

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The start-up must be in compliance with the indicated purpose of use, with the listed
values and after having considered prohibitions, obligations and residual risks.

Make sure that the machine is not connected to the power supply before operating.
Make sure that neither the inlet silencer nor the outlet silencer are clogged or dirty.

The electrical motor has been designed to operate at a maximum height of 1000 m above sea level and at
an ambient temperature between -15 + 40 °C.

Always check that voltage and frequency on the plate are the same of the plant. Deviations from nominal
values allowed is ± 10%.

When operating under different working conditions the motor cannot be run at full load. In this event the
start-up may become difficult, particularly on single phase motors.

Connect the motor following the instructions on the terminal box.

Connect the ground cable to the relevant clamp and verify the grade of electrical leakage.

Fuses are not a protection to the motor but only to short-circuits.

In the event of a missing phase, frequent start-ups, excessive voltage variations, clogging of the rotor, the
overload/overheat protection is compulsory in order to prevent overload.

Adjust the protective motor according to the nominal value on the nameplate as maximum value.

At machine start-up, it’s necessary:

- To check the operating pressure by a pressure gauge or a vacuum gauge;

- To check the calibration of the safety valve;

- To measure the power absorption and compare it with the value on the nameplate;

- To set the thermal motor protection accordingly.

After one hour, check that the absorbed power doesn’t exceed the accepted values.

SC blowers and exhausters are designed for continuous operation. In case of many starts (6 times per hour
with regular stop) or inlet gas or ambient temperatures increasing, the max temperature of the motor
winding can be exceeded. Stabilization valves with neutral phase should be used only under I.VA.CO. SRL
advice.

13.1 ADJUSTMENT
SC blowers and exhausters are self-adjusting on the differential pressure value generated by the working

conditions.

Piping losses are crucial to the differential pressure and should not be underestimated.

To decrease the flow rate do not throttle the suction or discharge but install a relief valve.

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14 . MAINTENANCE

Usually SC blowers and exhausters do not require maintenance. Wearing parts service life (bearings and
filters) depends on operating conditions. All machines have pre-lubricated bearing with a minimum service
life of 12.000 hours.

Nevertheless, it is necessary that qualified personnel periodically check the machine in order to avoid
possible failures.

CAUTION
All maintenance activities must be carried out by authorized and specialized personnel wearing personal

safety equipment.

During usual operation (fluid inlet and ambient temperatures not exceeding 40°C, differential pressure as
per nameplate data), the following routine maintenance activities have to be foreseen.

14.1 CLEANING

Make sure that the machine is shut down and locked against inadvertent start-up.

Clean the external part of the machine with compressed air. Deposit of dust on external blower surface
avoid an adequate thermal exchange and can cause an overheating of the interior.

Clean the ventilation grid of the motor fan cover. Dirt on motor fan cover reduces the air flow and causes
motor overheating.

Every 10/15 days during operation it is advisable to clean the filter cartridge. If the machine operate in a
high dusty environment it is necessary to replace it frequently. A dirt cartridge increases the pressure
differential, the absorbed power and the operating temperature.

If the machine doesn’t produce any differential pressure, or too low pressure, or gas flow decreases, it is
necessary to clean the inside of the machine.

Dirt inside the machines can cause:

- Change of running performances

- Cloging due to clearance

- Rotor displacement

- Excessive vibrations

If it is necessary to clean the machine inside, follow the instructions here below:

- Loosen the screws (13) and remove washers (14) and o-rings (15)

- Loosen the screw (21) and remove the base (04)

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- Remove the cover (02) hitting with a plastic mallet and use levers, if necessary.

- Remove the screw (06), the washers (07 and 08) and slide the ball bearing (09), if necessary using

an extractor.

- Remove the impeller (03) if necessary using release pincers.

For two stage machines after having removed the first impeller, remove the intermediate case (1.1) and the
second impeller (03).

For machines from 601 be careful not to lose the spacers (33) necessary to size axial clearance of the
machine.

Clean with compressed air and smooth with sandpaper if necessary.

Reassemble the machine, reversing the disassembly procedures.

14.1.1 SILENCER ELEMENTS REPLACEMENT

When the machine generates an excessive noise, it is necessary to replace the silencer elements, following
the instructions here below:

- Remove the plastic covers (27)

- Unscrew the screws (45) holding the flange

- Unscrew the tie rod (26), remove the silencer, paying attention not to lose the flat gasket (22).

- Replace the net silencer (23) and the silencer insert (24)
Reassemble the machine, reversing the disassembly procedures.

14.2 SEALING RINGS AND BEARINGS REPLACEMENT

The sealing rings lose the sealing capacity when exceeding their lifetime (max 2 years), thus allowing fluid
losses. At that extend, sealing rings must be replaced.

Early wearing of sealing rings may be due to:

- Handling fluid polluted

- Running conditions over the limits of the nameplate causing temperature increase and lubrication

grease damage.

Malfunctioning occurs when the bearings exceed their lifetime (max 2 years) causing excessive noise. At
that extend, bearings must be replaced.

Early wearing of bearings may be due to:

- Mechanical shocks during running or stop that can damage the ball rolling track.

- Running conditions over the limit of the nameplate causing temperature increase lubrication

grease damage.

15. OPERATING PROBLEMS AND TROUBLE SHOOTING

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All actions carried out in order to recover from the malfunctioning problems reported in the
next table (TAB. 2) must be performed in full safety conditions and, depending on the type
of action required, in accordance with the procedures described in the dedicated section of
this manual.

TAB. 2

MALFUNCTIONING

POSSIBLE CAUSE

REMEDY

1. The motor is switched on but does

not turn and makes no noise

1.1 At least two wires are cut off

Check the fuses, terminal or power
supply cables.

2. The motor is switched on but does

not turn and makes some buzzing
noise

2.1 At least one wire is cut off

2.2 The impeller is clogged

2.3 The impeller is defective

2.4 Ball bearing is defective

Check the wiring to the terminals of
the terminal box
Open the cover, remove foreign
objects and clean
Replace the impeller
Replace the ball bearing

3. The motor protection device

activates just after start up
Absorbed current exceeds the
rated value stated on the motor
nameplate

3.1 Short cut in the motor winding

3.2 Motor overload

3.3 The compressor is clogged

Check and replace the motor
Reduce throttling. if necessary clean
filters, silencer and connection pipes
See point 2.2

4. The machine does not deliver

differential pressure or the
pressure is too low

4.1 Leak in system

4.2 Wrong sense of rotation

4.3 Wrong frequency

4.4 Shaft seal defective

4.5 Different density of gas

4.6 Change in blade profile due to dirt

Seal the leak.
Reverse direction of rotation by
interchanging two connecting leads.
Correct frequency
Replace shaft seal
Consider conversion of pressure
values. Inquire the Service Dept.
Clean the impeller, check wear and
replace if necessary

5.Unusual flow noise

5.1 Flow speed too high

5.2 Dirty silencer

Clean pipes. Use pipes with larger
cross-section, if necessary
Clean silencer insert and replace if
necessary.

6. Unusual operating noise

6.1 Ball bearing defective or without
grease

Re-grease the ball bearing and replace
if necessary

7. Compressor leaks

7.1 Gaskets are not granting seal

Replace the gaskets

16. SHUT DOWN PERIOD

When a relatively long shut down period is foreseen (more than 2 months), or whenever required, it is
necessary to: disconnect the machine from power supply, close suction and discharge line, release
pressure, remove pipes and close inlet and outlet side with sealing plugs.

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17. PUMP SCRAP AND DISPOSAL

When scrapping and tearing down the pump, it is necessary to apply the specific disposal
procedures depending on the material of each part of the machine.
It is mandatory that the machines internals are cleaned and drained from any hazardous and

polluting fluid which can be dangerous to people, to things and to the environment.
As already stated in other sections of this manual, the handling and disposal of fluids as well as parts or any
other item shall be performed in compliance with the local law and relevant standards on force.

18. REPAIR

Due to the accuracy required in performing disassembly and assembly procedures of SC

blowers and exhausters, they must be carried out only by trained and skilled personnel.

If necessary, the machine can be returned back to I.VA.CO. SRL for repair (recommended

action).

19. SPARE PARTS

To order spare parts necessary to repair, the following information are mandatory:

- Part description

- Item number

- Blower or exhauster model

- Lotto number

The first two data can be found on the section drawing attached to this manual and the others on the
machine identification nameplate.

Original spare parts kits are available for standard construction machines.

Some items are buy out products and can be purchased either from original manufacturers or their
distribution network.