Robuschi RB-DV Series Manual

N° di serie S/N
Manufacturing year
2016
Type
RB-DV
Operating and maintenance
instructions for blowers.
Instruction for
Transport | Installation | Operation | Maintenance
PD Blower & Vacuum Pump Service & Repair Facility
120 –10293 276 ST, Acheson, Alberta, Canada T7X 6A5
T: 780.962.1827 F: 780.962.1830 E: [email protected]

3
GENERAL INFORMATION
This manual is integral part of the machine follow strictly the
instructions given in this Manual prior to positioning and
operating the blower.
For a quick and rational reading of this manual observe the
following statements and definitions :
Warning : Signals the risk of serious physical
dangers to people and/or serious danger to blower
Note : Signals important technical information for
the operation of the blower
Qualified personnel
It means these persons who, on account of their training,
experience and instruction and their knowledge of relevant
standards, specifications, accident prevention rules and
operating conditions, have been authorized by those
responsible for the safety of the plant to carry out the
necessary work on the blower and who can recognize and
avoid any possible dangers.
Acknowledge of first aid is also required as is information
about local rescue facilities.
The blower is a rotary lobe compressor suitable only for
industrial use as described in this Manual.
Any other use is to be considered improper and is
therefore forbidden.
The blower must be installed in a safe area, accessible only
by qualified personnel.
Warning : Non-qualified personnel are not
permitted to work on or near the blower
The personnel in charge must be well acquainted with this
Manual, and then conserve carefully the Manual in a known
site in order that it is available for future consultations.
The maintenance operations are to be carried out by qualified
personnel following the instructions given in this Manual and
using only original spare parts.
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4
SAFETY INFORMATION
Delivery of ROBUSCHI does not include the design of the
operating environment where the blower will be installed,
nor the power circuits, control circuits and other controls
or equipments required by the specific function of the
blower.
The CUSTOMER therefore must verify that the operating
environment, the power circuits, the control circuits and
the other controls or equipments related to the function of
the blower satisfy the essential safety requirements of the
European Machinery Directive 89/392/EEC and/or of the
corresponding legislation of the country where the blower
is used.
The CUSTOMER must also ensure that the valid
legislation on eletric safety (Low-Voltage Directive) and
Electromagnetic Compatibility of equipment (EMC
Directive) is followed.
Warning : All the personnel that come in contact
with the blower must observe following
safety regulations
During Blower operation
Do not touch external surfaces of the blower and of the outlet
silencer : surfaces temperature above 70 °C.
Do not open oil plugs during operation.
Do not disassemble transmission guard.
Do not approach blower without suitable clothing (avoid large
clothes, neckties, bracelets or necklaces).
Do not use the blower in operating conditions different from
the ones rated in the order confirmation.
Do not touch components under electric supply.
Dispose of fire-fighting equipment close to the
blower
Before any staff service on the Blower
Stop the blower and auxiliary systems as described at par. 5.4
Warning : Disconnect the electric supply, lock the
general switching open position with the key
and conserve it during the service operation
Warning : Insulate the blower from the plant and
restore the atmospheric pressure into it.
Warning : The gas contained in the plant may be
hot, toxic and irritant
Warning : Wait until the blower returns at the
ambient temperature (< 40°C)
During staff service on the blower
Check that all the operations indicated above have been
completed.
Lift the blower and the main piping by a suitable equipment
only.
During cleaning operations involving the use of sprays or
cleaning agents special attention is to be paid to relevant user
information to avoid the poisoning due to fumes or burns due
to caustic substances.
Warning : Do not use non-original spare parts or
accesssories .
Note : ROBUSCHI will not be liable for any
damage, brealdown, injury deriving from
the use of non-original spare parts or accessories
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5
BLOWER IDENTIFICATION
Tipo
Type
N° di serie
S/N
Anno di costruzione
Manufacturing year
Gas convogliato
Conveied gas
Pressione assoluta di aspirazione P1
Absolute intake pressure mbar
Temperatura di aspirazione T1
Intake temperature °C
Portata aspirata Q1
Inlet capacity m3/h
Pressione assoluta di mandata P2
Discharge absolute pressure mbar
Pressione differenziale P2 – P1
Differential pressure mbar
Temperatura di mandata T2
Discharge temperature °C
Velocità di rotazione del soffiatrore n
Blower speed Rpm
Potenza assorbita N
Absorbed power Kw
Potenza del motore
Motor power Kw
Velocità di rotazione del motore
Motor speed Rpm
Rumore emesso SPL
Noise dB(A)
WARRANTY CONDITIONS
The blower, if not stated otherwise by the contract, is
guaranteed for 12 months of operation and in any case for a
maximum of 18 months after the delivery.
The warranty apply only if the contractual and administrative
norms have been observed and if the installation of the blower
and its use comply with the instructions of this manual.
The damaged or defective parts due to manufacturing faults will
be repaired or replaced free of charge.
The following are excluded from this warranty : all parts subject
to wear (air filter, bearings etc..), transport costs and the costs
of the intervention of our technicians for operational faults not
due to manufacturing defects.
The warranty excludes any responsibility for direct or indirect
damage to people and/or objects caused by improper use or
inadequate maintenance of the blower and is limited only to
manufacturing defects.
The warranty is considered void in the event of tampering or
changes (even small ones) and use of non-original spare
parts.
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22
INDEX
1 BLOWER CHARACTERISTICS...............................................................................................22
1.1 Operating principle..............................................................................................................22
1.2 Construction........................................................................................................................22
1.3 Nameplate...........................................................................................................................22
2 PERFORMANCE LIMITS AND WORKING CONDITIONS .....................................................23
2.1 Operating environment and conveyed gas..........................................................................23
2.2 Performance limits ..............................................................................................................23
2.3 Flow adjustment..................................................................................................................23
2.4 Noise level...........................................................................................................................23
2.5 Forbidden uses....................................................................................................................24
2.6 Residual risks......................................................................................................................24
3 STORAGE................................................................................................................................25
3.1 Unpacking ...........................................................................................................................25
3.2 Handling..............................................................................................................................25
3.3 Preservation........................................................................................................................25
4 INSTALLATION........................................................................................................................26
4.1 On-site positioning of blower...............................................................................................26
4.2 Changing the inlet/outlet arrangement................................................................................26
4.3 Direction of rotation – Gas flow direction ............................................................................26
4.4 Coupling..............................................................................................................................27
4.4.1 Direct coupling............................................................................................................27
4.4.2 Belt drive coupling ......................................................................................................28
4.5 System piping......................................................................................................................29
4.5.1 Vacuum operation ......................................................................................................29
4.5.2 Pressure operation.....................................................................................................29
4.5.3 Pressure / Vacuum operation.....................................................................................29
4.6 Cooling circuit (only for /RV)................................................................................................30
4.7 Electric connection..............................................................................................................30
5 OPERATION.............................................................................................................................31
5.1 Preliminary controls.............................................................................................................31
5.2 First start up ........................................................................................................................31
5.3 Operation.............................................................................................................................31
5.4 Stopping the blower.............................................................................................................31
6 MAINTENANCE .......................................................................................................................32
6.1 Oil change...........................................................................................................................32
6.1.1 Oil type and viscosity..................................................................................................32
6.1.2 Recommended mineral oils........................................................................................32
6.2 Replacing the shaft seal......................................................................................................33
6.3 Cleaning compression chamber..........................................................................................33
6.4 Check of the gear clearance...............................................................................................33
6.5 Check of the rotors clearance.............................................................................................33
6.6 Spare parts..........................................................................................................................34
6.7 Demolition of the blower......................................................................................................34
7 TROUBLESHOOTING.............................................................................................................35
8 DISASSEMBLY AND REASSEMBLY .....................................................................................36
8.1 Disassembly........................................................................................................................36
8.1.2 Disassembly of drive side sump.................................................................................36
8.1.3 Disassembly of gear side sump..................................................................................36
8.2 Reassembly.........................................................................................................................36
8.2.1 Reassembly of drive side sump..................................................................................36
8.2.2 Reassembly of gear side sump..................................................................................36
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1 BLOWER CHARACTERISTICS
1.2 Operating principle
RB-DV series blowers are positive displacement
exhausters comprising two conjugate shaped rotors 2
which rotate inside a figure 8 shaped body 1.
The gas enters the blower at pressure P1, below the
atmospheric pressure, and temperature T1 and it is
trapped in the volume V.
The compression of entrained air is carried out by the
injection of cold atmospheric air in the volume V through
the nozzles 3.
The capacity is proportional to the speed of rotation and is
almost constant when the operating pressure varies.
P1 inlet absolute pressure
T1 inlet temperature
P2 outlet absolute pressure
T2 outlet temperature
T3 injection air temperature
Fig. 1
1.2 Construction
The body 1 is closed at both ends by covers 5A and 5B in
which the seals 45 and bearings 31, 32 and 33 are located.
The rotors 2 are synchronized by means of a gear with
involute toothed wheels 11A and 11B.
The shafts have labyrinth seals, gas leaks are collected
into special air spaces in the covers and are discharged
into the atmosphere.
Two sumps 12A and 12B are mounted on the covers which
act as oil tanks for the bath lubrication of the bearings and
of the synchronized gear.
Fig. 2
1.3 Nameplate
-Blower type
1) Size from 45 to 145
2) Version F Flanged
VVertical
HHorizontal
SPWithout feet
RVCooled vertical
3) Execution 0001
-S/N Serial number
-m3/h Capacity
-kW Power
-dp mbar Differential pressure
-n RPM Rotation speed
Note : For a detailed description of the blower materials and all its components see also the catalogue or
consult our technical service.
Type RB-DV 65 / V
S/N 0105116 exec. 0001
m3/h 1000 kW 37
dp 500 n 1450
mbar RPM
(3)
(1)
(2)
1
2
33
11B
12B
32
31
12A
5A
5B
25
11A
3 3
2
V
2
1
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2 PERFORMANCE LIMITS AND WORKING CONDITIONS
2.1 Operating environment and conveyed gas
The blower is suitable to operate only in dust free environment, with no-explosive or corrosive atmosphere
and to convey only atmospheric Air.
The atmospheric air injection can be keeped only from the ambient of installation
Warning : The blower is not suitable to convey explosive, toxic or dangerous gases.
Warning : The suction of liquids damages the blower.
2.2 Performance limits
Size RPM P1
(mbar) P2-P1 (mbar) T1 (°C) T2 (°C) T2-T1 (°C) T3 (°C)
MAX MIN MAX MIN MAX MAX MIN MAX MAX MAX MIN
45 5000 1000 500 150 1000 50 -25 150 130 50 -25
65 4800 900 500 150 1000 50 -25 150 130 50 -25
85 3800 700 500 150 1000 50 -25 150 130 50 -25
105 3000 550 500 150 1000 50 -25 150 130 50 -25
125 2400 450 500 150 1000 50 -25 150 130 50 -25
145 2000 350 500 150 1000 50 -25 150 130 50 -25
To Atmospheric temperature -20°C < To < +45°C Installation altitude < 1000 masl (if not differently specified on page 5)
Po Atmospheric pressure
P1 Blower inlet absolute pressure T1 Blower inlet temperature
P2 Blower outlet absolute pressure T2 Blower outlet temperature
2.3 Flow adjustment
Change transmission ratio
Change frequency of the motor
Use a two-speed motor
Discharge excess flow and silence it
Warning : Do not use relief valve to discharge excess flow
Warning : Do not recirculate flow to blower inlet.
Warning : Do not adjust flow by throttling inlet or outlet pipe.
2.4 Noise level
Noise level of the blower is indicated at page 4 as Sound Pressure Level according to ISO 3476 at 1m
distance from the blower and in free air (tolerance +/- 2dB(A))
Warning : For high compression ratio and for high speed of rotation noise level of blower can
be higher than 85 dB(A).
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2.5 Forbidden uses
Forbidden use Risk Measures
Operation in explosive atmosphere Fire and explosion
Forbidden use
Suction of explosive, toxic and
dangerous gases Fire and explosion Environment pollution
Risk of operators health
Operation with free nozzles Environment pollution
Risk of operators health
Suction of liquids Blower stall and ejection of parts Install a liquid separator on the suction nozzle of
the blower
Operation with shut off valve locked Overheating
Fire
Blower stall and ejection of parts Inform the qualified personnel charged with the
blower
Operation with wrong direction of
rotation Ejection of dangerous substances Blower stall and ejection of parts
Operation with speed higher than
the maximum one Blower stall and ejection of parts Use suitable limits to the motor speed when it is
supplied with frequency converter
Operation with speed lower than the
minimum one
Operation with pressure P1
higher than the maximum one Ejection of dangerous substances Use a safety pressure switch when the blower
sucks from a closed circuit
Operation with pressure P1
lower than the minimum one Blower stall and ejection of parts
Operation with pressure P2-P1
higher than the maximum one Blower stall and ejection of parts Set up the relief valve
Operation with temperature T1
higher than the maximum one Overheating Fire
Blower stall and ejection of parts Use a safety temperature switch when the
blower sucks from a closed circuitOperation with temperature T1
lower than the minimum one Blower stall and ejection of parts
Operation with temperature T2
higher than the maximum one Overheating Fire
Blower stall and ejection of parts
Use a safety temperature switch when the
blower sucks from a closed circuit
Operation with temperature T2-T1
higher than the maximum one Blower stall and ejection of parts Use a differential temperature switch when the blower sucks from a closed circuit
Stopping the ROBOX with counter
pressure High current absorption Fire Use a suitable stopping procedure
2.6 Residual risks
Hazard
UNI EN 1012-1 Compressor
Residual risk
Cutting, severing, drawing
in, trapping, entanglement,
friction and abrasion
Do not approach the transmission guard with no suitable clothes
Advice in the manual. Protect cooling port properly to cutting and trapping risk
Fluid ejection Overcoming the operation limits (par. 2.2) can cause the risk of ejection of parts
Ejection of parts Overcoming the operation limits (par. 2.2) can cause the risk of ejection of parts
Loss of stability None
Electric installation
None
The electric equipment is not supplied by ROBUSCHI
Electrostatic phenomena
External influences on
electrical equipment
Thermal safety The surface of the blower and of the discharge silencer can be higher than 70 °C
Label C.7 on the surfaces
Advice in the manual
Noise The sound pressure level can be higher than 85 dB(A)
Wear the noise protection devices
Label C.2 on the inlet filter
Advice in the manual
Suction of liquids Forbidden use can cause the risk of suction of liquids
Gas Forbidden use can cause the risk of suction of dangerous gases
Fire and explosion Overcoming the operation limits (par. 2.2) can cause the risk of fire and explosion
Operation with shut-off valve locked can produce the risk of fire
The not correct maintenance can cause the overheating and the risk of fire
Failure of energy supply Ejection of fluids and parts
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3 STORAGE
3.1 Unpacking
Check always the correspondence between documents and materials and the presence of eventual damages
due to transport.
Warning: Remove with care the packing and clearing all the dangerous elements (nails, splits,
etc…)
3.2 Handling
Blower kg
45 97
65 159
85 250
105 400
125 610
145 1099
Warning : Do not use the holes in the flanges to lift the blower
3.3 Preservation
Keep the blower in a place protected against solar radiation and at following climatic conditions :
Temperature from – 20°C to 40 °C
Relative humidity from 10% to 80%
If different climatic conditions are forecast contact ROBUSCHI.
Do not remove the nozzle protections and renew the preservation every 6 month or more frequently if
humidity is higher than 80% using antirust oil.
Parts Anti-rust oil
Type Trade
Shiny external parts Rustia 27 Rust Ban 397
V-Produkt 9703
AGIP
ESSO
SHELL
Gear and bearings Rustia C 100 Antiruggine MZ 110
Ensis Motor Oil 20
AGIP
ESSO
SHELL
Compression chamber Rustia C 100 Antiruggine MZ 45
Ensis Motor Oil
AGIP
ESSO
SHELL
Warning : Use anti-rust oil with fire point over 200 °C
Warning : Dispose the used anti-rust oil in accordance with local regulations
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4 INSTALLATION
4.1 On-site positioning of blower
The blower has to be set horizontally on a level surface and attached using screws which secure the feet or
the outlet flange ( /F e /SP version).
4.2 Changing the inlet/outlet arrangement
To move from the arrangement with inlet and outlet on a vertical axis to that with inlet and outlet on a
horizontal axis and vice versa exchange the oil levels by changing the position of the plugs in accordance
with Fig. 4 on both blower sumps.
Pos
Description
Ps Left foot
Pd Right foot
Tc Oil fill plug
Ts Oil drain plug
T Plugs
L Oil level plugs
Fig. 4
4.3 Direction of rotation – Gas flow direction
Fig. 5
Warning : Do not use the blower with a direction of rotation or a flow direction different from
that one shown in Fig 5.
Tc
Ts
Pd
L
T
Ts
L
Ps
L
Pd
Ts
Ps
T
L
Ts
Tc
Standard blower
Cooling air inlet
Blower – F.I.
with inverted flow Cooling air inlet
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