ISOIL SBM 75 User manual

ISOIL
IMPIANTI
ISOIL IMPIANTI spa – Italy
Sede e Stabilimento
Head office and factory
24061 Albano S. Alessandro (BG)
74, via Madonna delle Rose
Tel. [phone]
Fax [phone]
E-mail: [email protected]
www.isoilmeter.com
Uffici commerciali
Sales office
20092 Cinisello Balsamo (MI)
27, via F.lli Gracchi
Tel. [phone]
Fax [phone]
E-mail: [e-mail]
Sede legale
Registered office
20124 Milano
24, viale Vittorio Veneto
Capitale soc. i.v. Euro 774.00
Codice fisc. E part. IVA 13066900153
C.C.I.A.A. MI – Reg. Impr. 86449/2000
OPERATOR'S MANUAL
SBM 75
P.D. METER
ALUMINIUM EXECUTION
CODE: MA/026/00/EN
REV: 04A
DATE: 07/2009

ISOIL
IMPIANTI
1Introduction .............................................................................................................1
1.1 Warranty...........................................................................................................1
1.2 Introduction.......................................................................................................1
1.3 Working principles ............................................................................................1
2General safety principles.........................................................................................2
2.1 General instructions..........................................................................................2
2.2 Meter operation.................................................................................................3
2.3 Instructions for the operator..............................................................................3
2.4 Servicing instructions........................................................................................3
2.5 Operating precautions ......................................................................................4
3Installation...............................................................................................................5
3.1 Precautions.......................................................................................................5
3.2 Start-up precautions .........................................................................................6
4Maintenance............................................................................................................7
4.1 Disassembly .....................................................................................................7
4.1.1 Main components disassembling .............................................................7
4.1.2 Rotor disassembling.................................................................................8
4.2 Assembly..........................................................................................................8
4.3 Storing ..............................................................................................................8
4.4 Calibrating mechanism (only for mechanical counter) ......................................8
4.4.1 Calibration of flow meter (see Fig.2).........................................................9
4.4.2 Suggested lubricating oils for calibrating mechanism...............................9
4.5 Strainer/air separator......................................................................................10
4.5.1 Strainer...................................................................................................10
4.5.2 Air vent valve..........................................................................................10
4.6 Tests after overhaul........................................................................................10
4.7 Extraordinary maintenance.............................................................................11
4.8 Spare parts.....................................................................................................11
4.9 Maintenance schedule....................................................................................11
4.10 Troubleshooting ...................................................................................11
5Special Tool ..........................................................................................................13
6Technical data.......................................................................................................14
OPTIONAL:
Strainer air separator
Preset valve + check
Calibrating mechanism for mechanical counter
Gearing box for electronic counter VEGA

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ENCLOSED:
Overall dimensions with mechanical counter......................................... Dwg.4251
Overall dimensions with EM6422........................................................Dwg.5302-3
SBM75 P.D. meter assembly.............................................................Dwg.6474-M
SBM75 P.D. meter assembly with air vent valve .............................Dwg.6474-1M
Preset valve assembly.......................................................................Dis.6474-2M
Vane assembly.......................................................................................Dwg.6063
Air vent valve........................................................................................Dwg.565-M
Calibration mechanism........................................................................Dwg.672/75
Gearing box for mounting with VEGA counter.......................................Dwg.3958
ISOIL IMPIANTI updates own products without condition of advance notice. ISOIL IMPIANTI doesn’t
take liabilities for use the dates that are modified

Isoil impianti S.p.A. Page 1
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1 Introduction
1.1 Warranty
Each device comes with a 1-year warranty, starting from the delivering date.
Such warranty of good operating of the equipments includes our efforts of repairing or
replacing, in the shortest time, the parts that fail for defective manufacturing or material
during the warranty period, without rights to any refund for damages or other expenses.
If a device is going to be transferred in our laboratory for repair, the delivery expenses is at
the customer’s expense.
For any inspection of our qualified personnel related to what stated above, the labor is at our
expenses, while the board, lodging and travel expenses are in charge at the customer.
The components furnished and installed, but not produced, by Isoil
Impianti S.p.A.are covered by the guarantee released by the respective producers.
The warranty ceases if non-original spare parts are used; the warranty ceases too for an
improper use or if the operational limits of the device are exceeded.
1.2 Introduction
ISOIL positive displacement meters are precision measuring instruments designed for use
with a variety of petrochemical products and liquids. Each meter is fully tested and calibrated
by factory before dispatch, and a regular service will maintain a high standard of
performance and accuracy.
P.D. meters must be periodically tested by a calibrating tank, Prover, or Master Meter: if out
of accuracy a service is necessary.
Experience has shown that mechanical defects are usually caused by the entry of foreign
matters into the metering compartment due to inadequate straining facilities in the pipeline.
Special tools have been designed to facilitate overhaul operations and their use is
recommended.
1.3 Working principles
Liquid enters the meter through the manifold and causes the rotor to revolve by pressure on
the vanes. (fig.1)
The proximity of the rotor to the front and rear of the casing forms an efficient seal while the
profile of the casing guides the vanes on to the measuring crescent.
The seal between vane and body is assured by the combined effects of gravity and
centrifugal forces of vanes and it is assured the self-balance of clearances generated by the
use too.
The rotor spindle extends through a pressure tight seal in the meter front cover into the
calibrating mechanism which transmits the rotor movement to the register.
Fig.1

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CAUTION
All parts under pressure must be released before disassembling
the meter or its accessories for adjustment, inspection, servicing or
substitution of its components.
Also make sure that all electric or electronic part, if present, are
disconnected from its power supply.
2 General safety principles
This operator’s manual contains basic safety instructions that must be followed during
system installation, operation and maintenance. Failure to comply with these instructions
may result in personal injury and can lead to personal, industrial or environmental accidents.
Some examples of possible hazards caused by non-compliance with these instructions are:
•Failure of the system and/or some components
•Hazards to people caused by the exposition to electrical, mechanical or chemical
influences
•Pollution of the environment through the leaking of hazardous substances
Therefore, follow the safety instructions described in this manual; in case of uncertainties,
please contact the manufacturer.
2.1 General instructions
•Read carefully the operator’s manual.
•Make sure that all the personnel assigned to the installation, operation and maintenance
is properly trained.
•Make sure that the contents of the operator’s manual are completely understood by all
personnel assigned to the operations on the system.
•Inspect parts under pressure in compliance with national regulations before the initial
operation of the system.
•Make sure that the operator’s manual is readily available to personnel on site.
•Follow national safety regulation in force in the location of the plant.
•Make sure that the system operates in compliance with the relevant operational limits.
•All pressure parts must be inspected and serviced in accordance with national laws in
force.

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2.2 Meter operation
•The meter must be operated only by trained and authorized personnel.
•The meter must not be operated in presence of foreign, unauthorized or not
adequately trained personnel.
•The meter must be used for the purpose it is made for; the manufacturer is not
responsible for any damage deriving from uses outside of the original purposes.
•The meter must be operated inside the limits fixed by the manufacturer; the
manufacturer is not responsible for any damage deriving from uses outside of the
operational limits of the device.
2.3 Instructions for the operator
•The operator must adhere to safety and accident-prevention standards currently in force
in the country where the device is installed.
•The operator must not, by his own initiative, carry out any operation that is outside his
competence.
•The operator must carefully comply with hazard and/or prohibition instructions contained
in this manual.
•Do not use petrol, solvents or other flammable substances to clean parts. Use only
approved commercial solvents that are non-flammable and non-toxic.
2.4 Servicing instructions
•Never carry out any maintenance, servicing or regulation before having closed the root
valve, discharged the pressure from the system and disconnected the power supply to
any electrical device (if present), unless explicitly stated otherwise.
•Read carefully the rating plates on the individual equipment.
•All maintenance operations, either ordinary or extraordinary, must be done by authorised
and trained personnel.
•The maintenance operator must wear clothes adequate to the working environment and
to the situation; in particular, loose or voluminous clothes, chains, bracelets, rings,
earrings or anything that might get caught in the mechanical parts of the system should
be avoided.
•The maintenance operator must wear adequate protective devices in accordance with
safety and accident-prevention regulations.
•In explosive environments use only antisparking equipment.
•If the meter is connected to any electric or electronic equipment, disconnect all of them
from the power supply before doing any servicing or regulation operation, unless explicitly
stated otherwise in the manual.

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2.5 Operating precautions
•The meter must always remain full of product; to achieve this, it is suggested to install the
meter so that it remains below the main line.
•The line upstream the meter must be kept full of product to avoid that some air enters the
meter.
•Each meter must be adjusted following the instructions supplied in the operator’s manual.
•Follow the recommendations of the manufacturer when installing pumps. Pay particular
attention to factors such as the use of foot valves, inlet pipes dimension and conformity
with nPSH when there are suction pumps. Follow the recommendations of the
manufacturer to minimize the problems due to air and vapors.
•For flashing liquids (quick gasification of the liquid) or easily vaporizing liquids at high
environmental temperatures, e.g. light hydrocarbon, it is advisable the use of submerged
aspirations and pipes larger than the nominal dimension of the pump.
•Thermal expansions that generate overpressures can easily damage the meters and the
systems in general. Put safety valves for overpressure in every section that can be
closed through regulation or isolation valves.

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CAUTION
All parts under pressure must be released before disassembling
the meter or its accessories for adjustment, inspection, servicing or
substitution of its components.
Also make sure that all electric or electronic part, if present, are
disconnected from its power supply.
3 Installation
3.1 Precautions
The installation of the meter counter does not require any special procedure; just pay
attention to the following points:
•The meter counter must be installed horizontally; for other applications a vertical
arrangement is provided. In both cases the rotor axis must be kept horizontal.
•All the meter’s openings are protected with covers when shipped; those must not be
removed until the meter is installed on the piping
•Before the installation of the meter, it's suggested to clean thoroughly the piping to
remove dirt, crusts and other foreign particles.
•Piping should not exercise strain on the meter. The meter is designed for overhang and
supports should be provided only on the adjacent pipes.
•Leave space enough around the meter to ease access for adjustment, servicing and
disassembly. The counter, if present, must be easily readable.
•The meter must always remain full of product; it's suggested to install the meter so that it
remains always under the main line.
•The line upstream the meter must always remain full of product to avoid that air enters
the meter's measure chamber; if the pipe arrangement allows reversal flow, a non-return
valve must be installed.
•Flow through the meter must be regular and uniform; pulsating and irregular flows must
be avoided.
•It is recommended to install flow limiting valves downstream of the meter if the flow rate
can reach values higher than the maximum allowed for the meter.
•If the line pressure can reach values higher than the maximum allowed, automatic safety
valves must be installed in adequate places.
•To protect meter from damages due to foreign particles in the liquid, a suitable strainer
with a correct mesh number (40 mesh for oil, 60 mesh for diesel oil, 100 mesh for
gasoline) must be installed upstream the meter.
•In case the rate of flow through the installation exceeds the meter maximum rated
capacity, it is advisable to use a flow limiting valve, which must be installed downstream
the same meter.
•Water must not flow through the meter.

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•Meters must be installed in such a way that air or vapour do not enter through the liquid
under measurement. It is always suggested to install an air separator just upstream the
meter.
•To avoid hammer shocks which may strongly damages the meter, it is not advisable to
install upstream or downstream the meter any quick closing valves.
•It is recommended to install root valves at the inlet and outlet to ease servicing operations
and isolation of the meter.
3.2 Start-up precautions
•Before proceeding with the start-up make sure that:
- The meter is adequately fixed.
- All the connections are tightened.
- Air is bled from the pipes.
•If a calibration mechanism is associated with the meter, before the start-up it must be
filled with lubricating oil.
•Vent out all the air eventually present in the line.
•When the meter is operated for the first time, fill it slowly with the operating fluid by
following this procedure:
- Open slowly the upstream isolation meter or fill the meter by gravity.
- Open slowly the downstream isolation meter letting the flow rate rise smoothly to
the operating value.
CAUTION
Be very careful when starting up the meter: if the air enters the
measuring chamber the rotor can easily reach high rotational
speeds, leading to abnormal wear of the vanes and other
components; this, in turn, will lead the meter to a major failure.

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CAUTION
All parts under pressure must be released before disassembling
the meter or its accessories for adjustment, inspection, servicing or
substitution of its components.
Also make sure that all electric or electronic part, if present, are
disconnected from its power supply.
4 Maintenance
Before removing the flow meter from the pipeline for repairs, it is recommended that the
possible causes and corrective actions are noted with the help of Fault Diagnosis Chart given
in this manual.
Note that certain components in the flow meter assembly are not interchangeable. Therefore,
if more that one flow meter is dismantled, it is recommended that each flow meter is
dismantled independently.
CAUTION: Be very careful when you start up the meter after maintenance: if the air enters
the measuring chamber the rotor can easily reach high rotational speeds,
leading to abnormal wear of the vanes and other components; this, in turn, will
lead the meter to a major failure. See chap.3.2 for start-up precautions.
4.1 Disassembly
The flow meter may be considered as two main assemblies: the measuring chamber and the
calibrating mechanism. To separate these two assemblies from each other, remove the
screws securing the calibrating mechanism on the flow meter body.
CAUTION: Before dismantling the meter for maintenance release pressure from the line
and drain all the fluid inside the meter through the draining hole below the
meter.
Proceed then with the maintenance of the faulty part.
4.1.1 Main components disassembling
•To ensure stability during the dismounting, it is advisable to use our "Ring Support tool"
(see special tool).
•Remove the sealings and the screws of the counter, unscrew the screws fixing the
calibrating mechanism and after the removal of the transmission spindle, take off the
transmission spindle pin.
•Remove all nuts, bolts and washers of the front cover.
•Remove the front cover using the "Cover Removal Tool" (see special tool).
•Remove the rotor group by using the "Rotor removal and turning tool" (see special
tool).Turn the rotor so that two graphite vanes re-enter in the rotor in correspondence of
the smaller radius.

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•Extract the rotor paying attention to use the free hand to guide the rotor and control the
lateral vanes movement. Don't dismount the manifold unless there are product losses or
breakings.
4.1.2 Rotor disassembling
NOTE: Never remove the vanes unless they are damaged. If it is necessary to remove the
vanes, before proceeding mark the position of the four vanes that correspond with
the position in the rotor: that will ease the reassambly procedure. Vanes are not
interchangeable and, if they can be reused, they must be placed in their original
position.
•Remove the split pin placed in the opposite side of the adjusting screws.
•Remove the vane and the two washers.
•Remove the remaining vane-rods assembly.
CAUTION: Don't remove or loosen the the vanes adjusting nuts, since that would vary the
clearance between the vanes and the measuring chamber, causing loss of
performance and/or meter failure.
4.2 Assembly
Before assembly, clean and inspect all parts for any visual damage. Ensure that all o-ring
grooves are clean and undamaged. Examine the O-Rings and ensure that they are not
damaged or swollen, replace them if necessary. Examine graphite bushes on rotor assembly
for free rotation and play, replace them if either is apparent. Examine each vane assembly
for damage or wear, replace vane(s) if either is apparent. Examine gland seal rings in rotor
assembly for damage or wear and replace if either is apparent.
The assembly procedure is the reversal of the dismantling procedure; only for installation of
the internal body special precautions should be taken to match the centering cap of the
external body's front cover.
4.3 Storing
•if after a working period it is foreseen to stop the meter for a long time, drain the meter
and its accessories;
•If the meter or the equipment of the system are not immediately used, or if it is withdrawn
from service and stored, it is important to follow next instructions :
- fill the meter and its accessories with clean kerosene or lubricated oil and close
its ends with blind flanges;
- fill the carter containing the calibrating mechanism with oil till the sight glass is
reached (see chap.4.4).
•adequately protect counters against rain and dust, with damp-proof caps.
4.4 Calibrating mechanism (only for mechanical counter)
The calibrating mechanism comprises a train of gears which transmit movement of the rotor
to the counter. Operational failures of the mechanism are rare and they generally regard the
breaking of tension pin, due to an excessive strain.
It is recommended to repair without varying the calibrating adjustment.
CAUTION: do not remove the shimming washers between the frame and the bearing of the
mechanism box.

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4.4.1 Calibration of flow meter (see Fig.2)
To carry out meter calibration follow next procedures:
•Break and remove seals.
•Remove the three screws (1) securing the cover (2) to the housing (3) in which calibrating
mechanism is fitted.
•Remove cover (2)
•By using square key (4 mm) turn shaft (4) till A, B, C holes placed on the bracket (5) and
on friction roller (6) will be properly aligned.
•Insert in these holes the stop pin (supplied with the meter, then using the square key
operate on the shaft (4) as follow :
- turning counter-clockwise direction, even if the quantity of fluid does not vary, on
the counter is obtained an higher volume indication;
- turning clockwise direction it is obtained a lesser indication.
NOTE: one complete turn of the screw varies the volume indicated on the meter by
approximately 0,36% (per cent).
4.4.2 Suggested lubricating oils for calibrating mechanism
Company Type Temeprature range
AGIP OTE 32
SINT 2000 -10÷+60 °C
ESSO NUTO 32 -20÷+65 °C
IP HINDRUS HI 46 -10÷+60 °C
SHELL AEROSHELL FLUID 31 -40÷+204°C
MOBIL DTE 26
MOBIL 1 -10÷+80 °C
-10÷+200 °C
NOTE: to avoid ice forming in wintertime, add two spoons of car antifreeze.
Fig. 2

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4.5 Strainer/air separator
4.5.1 Strainer
A clean strainer is fundamental for the correct operation of the system; a dirt strainer would
create an excessive pressure drop, leading to the failure of the basket and thus letting dirt,
crusts and other harmful elements to flow into the fluid. If possible, check regularly the
pressure drop between the inlet and the outlet of the strainer; the maximum allowed pressure
drop is 130 kPa.
For a correct servicing of the basket, follow the procedure described below (dwg6474/1M):
•Discharge the pressure from the system and close the valves at the inlet and outlet
•Discharge the liquid inside the strainer air separator through the draining outlet on the
bottom of the strainer
•Remove the cap
•Remove the basket and clean it thoroughly with a jet directed from inside to the outside; if
possible, use a water cleaning machine
•Check accurately that the gasket is intact; if it is found to be damaged, replace with
another one with the same filtering grade:
For oils with viscosity up to 20°E(150cSt): 40 mesh (433 micron)
For diesel oils: 60 mesh (247 micron)
For gasoline or water: 100 mesh (153 micron)
•Put again the wire gauze in place, close the cover and the drain valve.
It's suggested to replace the gaskets between the strainer body and the cover each time the
strainer air separator is disassembled.
4.5.2 Air vent valve
Follow the istructions below for the servicing of the air vent valve:
•Discharge the pressure from the system and close the valves at the inlet and outlet
•Discharge the liquid inside the strainer air separator through the draining outlet
•Inspect the air vent valve, checking that it works properly and its part aren't damaged
•Close the draining valve and restore the operating conditions
4.6 Tests after overhaul
After overhaul the p.d. meters must be tested with suitable proving systems. Error between
the value stated by the p.d.meter counter and the value stated by the proving device is
calculated as below:
Example:
Measured by the meter Measured by the proving tank Error (%)
1000 l 1003 l -0,3%
1000 l 997 l +0,3%
The formula is:
100%
0
0⋅
−
=VVV
E
V= Measured by the meter
V0= Measured by the proving tank

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4.7 Extraordinary maintenance
The user must define a maintenance scheduling table according to the fluid utilised, the
operational conditions, the estimated/real workloads and the environmental conditions.
For all extraordinary maintenance needed after a failure and/or the rising of a fault that
compromises the normal operation of the system, please contact Isoil Impianti SpA
Customer Care.
4.8 Spare parts
For a correct meter maintenance use only original spare parts from Isoil Impianti S.p.A. .
Isoil Impianti S.p.A. is not responsible for any problem that can result from the use of non
original spare parts.
4.9 Maintenance schedule
Task Monthly 6 Months 12 Months 24 Months
Visual inspection of manifold
and meter body; check for leaks X
Inspection of the meter; check
for internal part status: vanes,
rotor, measure chamber, o-
rings; check for wear or
damage.
X
4.10Troubleshooting
Symptom Possible cause Remedy
Liquid passing with normal
flow rate but counter fails to
register.
1. Defective counter. Remove and check the
counter by rotating bottom
coupling. In case of any
problem in the counter,
contact the factory.
2. Drive from the rotor fails to
reach the counter, due to
sheared pins in the calibrating
mechanism.
Check cross pins fitted on all
gears in the calibrating
mechanism.
No liquid passing through. 1. Defective counter. Remove and inspect the
counter for free movement.
2. Jammed calibrating
mechanism. Remove and inspect the calibrating mechanism.
Identify the source of friction
and replace relevant parts.
3. Jammed rotor assembly. Dismantle meter assembly.
Inspect front & rear covers
and rotor for scoring marks.
Inspect vanes and bearings
for damage.
Causes of rotor jamming :
a. Solid particles trapped on
rotor surface. Clean the rotor surfaces.

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Symptom Possible cause Remedy
b. Incorrect adjustment of
rotor end clearance due to
loose or defective bearing
adjuster.
Check setting of bearing
adjuster. Clean and inspect
the bearing adjuster.
c. Rotor bearings jammed. Clean bearings and cover,
and inspect for any damage.
d. Rotor bearings worn out. Replace the bearings, if axial
play is observed.
e. Misalignment of front &
rear covers due to missing
dowel pins.
Ensure that both dowel pins
are used for locating the
covers with the body.
4. Clogged filter basket. Clean the filter regularly.
Liquid is leaking from the joint
at front cover and calibrating
mechanism.
Spindle seal is damaged. Replace the spindle seal.
Inspect rotor spindle for wear
or scratch marks.
Liquid is leaking from the joint
at front cover and body or
rear cover and body.
Damaged o’ring seals,
unclean o’ring grooves, cover
bolts loose.
Clean o’ring grooves, replace
o’rings and secure cover bolts
tightly.
Excess delivery beyond 1%. 1. Vane blades damaged. Inspect and replace damaged
vane blades.
2. Jammed rotor or calibrating
mechanism. As described above.

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5 Special Tool
DESCRIPTION USE FIGURE
Rotor removal and
turning tool
Code 80AT0039
To fit on the rotor spindle in
place of rotor gear when turning or
removing rotor
assembly
A
Cover removal tool
(n.2 pieces are necessary)
Code 80AT0042
For extracting front cover. B
Bearings extractor
Code 80ES0015
For dismounting the
internal ring of the bearing
after having broken the
external ring.
C
Vanes checking tool
Code 80AT0063
For measuring of the vanes
length. D

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6 Technical data
•Maximum working pressure..................................................................................1000 kPa
•Working temperature.....................................................................................-10°C ÷ +50°C
•Maximum flow rate.................................................................................................. 500 lpm
The value reproduced in label can change as regards to those shown in the manual

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1
1
2
2
3
3
4
4
5
5
6
6
AA
BB
CC
DD
/
//
67 90
67
90
Ø11
FLANGE QUADRE PN50
DN50 SQUARE FLANGES
~295
509
191
384
100
SPAZIO PER ESTRAZIONE CESTO FILTRO
CLEARANCE FOR BASKET STRAINER REMOVAL
554