BIFFI OLGA Series User manual

Copyright © Bif. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website www.bif.it or from your nearest Bif Center:
Bif Italia s.r.l. - Strada Bif 165, 29017 Fiorenzuola d'Arda (PC) – Italy PH: [phone] – bif_italia@bif.it
Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
December 2020
Bif OLGA
Double-Acting Hydraulic Actuator

December 2020
Revision Details
Rev. Date Description Prepared Checked Approved
5 December 2020 Migration to new template
4 20/04/18 Revised data-plate Ermanni Oreci Vigliano
3 18/04/16 Updated applicable regulation
(Chapter 1.1.1) Ermanni Oreci Vigliano
2 31/07/12 General update Ermanni Stoto Vigliano
1 17/11/10 General update Ermanni Stoto Vigliano
0 05/05/99 Document Release Lazzarini Aliani Ziveri
Revision Details
Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Revision Details

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Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Table of Contents
December 2020
Table of Contents
Table of Contents
Section 1: General Warnings
1.1 Generalities................................................................................................... 1
1.1.1 Applicable Regulation ........................................................................ 1
1.1.2 Terms and Conditions......................................................................... 1
1.2 Identication Plate ........................................................................................ 2
1.3 Introducing the Actuator............................................................................... 3
1.4 Data Sheet .................................................................................................... 3
Section 2: Installation
2.1 Checks Upon Actuator Receipt ...................................................................... 4
2.2 Actuator Handling......................................................................................... 4
2.3 Storage ......................................................................................................... 8
2.4 Actuator Assembly on the Valve.................................................................... 9
2.4.1 Types of Assembly.............................................................................. 9
2.4.2 Assembly Procedure......................................................................... 10
2.5 Hydraulic Connections................................................................................ 11
2.6 Electrical Connections (If Any)..................................................................... 12
2.7 Commisioning ............................................................................................ 13
Section 3: Operation and Use
3.1 Operation Description................................................................................. 14
3.2 Residual Risks.............................................................................................. 16
3.3 Operations ................................................................................................. 16
3.3.1 Local Manual Operation.................................................................... 16
3.3.2 Emergency Manual Operation by MHP ............................................. 18
3.3.3 Emergency Manual Operation by MSJ - MHW.................................... 19
3.4 Calibration of the Angular Stroke ................................................................ 19
3.5 Calibration of Micro-switches (If Foreseen).................................................. 24
3.6 Calibration of the Operation Time (Optional – If Foreseen).......................... 25
Section 4: Operational Tests and Inspections
Operational Tests and Inspections..........................................................................27
Section 5: Maintenance
5.1 Periodic Maintenance.................................................................................. 28
5.1.1 Check and Restore Oil Level in the Hydraulic Control Unit................. 29
5.2 Extraordinary Maintenance ......................................................................... 31
5.2.1 Replacement of Cylinder Seals .......................................................... 31
5.3 Lubrication of Mechanism........................................................................... 35
5.4 Dismantling and Demolition ....................................................................... 36

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Table of Contents
December 2020
Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Table of Contents
Section 6: Troubleshooting
6.1 Failure or Breakdown Research.................................................................... 37
Section 7: Layouts
7.1 Spare Parts Order........................................................................................ 38
7.2 Parts List for Maintenance and Replacing Procedure.................................... 39
Section 8: Date Report for Maintenance Operations
Date Report for Maintenance Operations...............................................................47

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Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
General Warnings 1
Section 1: General Warnings
NOTICE
Bif Italia s.r.l pays the highest attention to collecting and verifying the documentation
contained in this user manual. However Bif Italia s.r.l. is not liable for any mistakes
contained in this manual, for damage or accidents due to the use of the latter.
The information contained is of exclusive reserved ownership of Bif Italia s.r.l and may
be modied without prior notice. All rights reserved.
Section 1: General Warnings
NOTICE
The manual is an integral part of the machine, it should be carefully read before carrying
out any operation and it should be kept for future references.
1.1 Generalities
Bif Italia s.r.l. actuators are conceived, manufactured and controlled according to the
Quality Control System in compliance with EN-ISO 9001 international regulation.
1.1.1 Applicable Regulation
EN ISO 12100:2010: Safety of machinery – General principles for design –
Risk assessment and risk reduction
2006/42/EC: Machine directive
2014/68/EU: Directive for pressure PED equipment
2014/35/EU: Directive for low voltage equipment
2014/30/EU: Directive for the electromagnetic compatibility
2014/34/EU: Directive and safety instructions for use in hazardous area
1.1.2 Terms and Conditions
Bif Italia s.r.l. guarantees that all the items produced are free of defects in workmanship
and manufacturing materials and meet relevant current specications, provided they
are installed, used and serviced according to the instructions contained in the present
manual. The warranty can last either one year from the date of installation by the initial
user of the product, or eighteen months from the date of shipment to the initial user,
depending on which event occurs rst. All detailed warranty conditions are specied in the
documentation forwarded together with the product. This warranty does not cover special
products or components not warranted by subcontractors, or materials that were used or
installed improperly or were modied or repaired by unauthorized staff. In the event that
a fault condition be caused by improper installation, maintenance or use, or by irregular
working conditions, the repairs will be charged according to applicable fees.
The warranty and Bif Italia s.r.l liability shall lapse in the event that any modication
or tampering whatsoever be performed on the actuator.

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Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
General Warnings2
Section 1: General Warnings
1.2 Identication Plate
! WARNING
It is forbidden to modify the information and the marks without previous written
authorization by Bif Italia s.r.l.
The plate fastened on the actuator contains the following information (Figure 1).
Figure 1 Data Plate

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Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
General Warnings 3
Section 1: General Warnings
1.3 Introducing the Actuator
The hydraulic actuator series OLGA was engineered and is manufactured to provide
maximum torque output with minimum supply pressure. The OLGA actuators is suitable
for any quarter turn application such as ball, plug, buttery valves or dampers, in both
ON-OFF and Modulating heavy duty service.
The actuator (see Figure 2) is made up of a weatherproof scotch yoke mechanism
transforming the linear movement of the pneumatic cylinder (on closing or opening) into
the rotary movement, which is necessary for operation. The angular stroke of the yoke is
adjustable between 82° and 98° by means of the external mechanical stops screwed into
the left wall of the mechanism housing and into the end ange of the pneumatic cylinder.
The cover of the scotch yoke mechanism is arranged for the assembly of the required
accessories (positioner, signalling limit switches, position transducer, etc.) by means of
proper matching units. The above mentioned accessories are operated by the actuator
drive sleeve. The housing of the scotch yoke mechanism has a ange with threaded holes
to x the actuator to the valve either directly or, if required, with the interposition of an
adaptor ange or a mounting bracket. The actuator yoke has a hole with keyways suitable
for the assembly of an insert bush the internal hole of which is machined (by Bif or at
Customer's care), according to the shape and dimensions of the valve stem. Bif can supply
different types of control system following Customer's requirements.
The expected lifetime of actuator is approximately 25 years.
Figure 2 Identication of Actuator Parts
1.4 Data Sheet
Supply uid Hydraulic oil, special version for re-resistant uids
Operating temperature Standard: from –30 °C to +100 °C
Optional: from –60 °C to +140 °C
Supply pressure Please refer to technical document:
“actuator data-sheet”
Hydraulic cylinder
Valve coupling
Scotch yoke mechanism
Optional: for OLGA MHP models or
second pneumatic cylinder for
“double cylinders” models
Manual handpump - MHP
(optional)
Valve position indicator

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Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Installation
4
Section 2: Installation
Section 2: Installation
2.1 Checks Upon Actuator Receipt
• Check that the model, the serial number of the actuator and the technical data
reported on the identication plate correspond with those of order conrmation
(Section 1.2).
• Check that the actuator is equipped with the ttings as provided for by
order conrmation.
• Check that the actuator was not damaged during transportation: if necessary
renovate the painting according to the specication reported on the
order conrmation.
• If the actuator is received already assembled with the valve, its settings have
already been made at the factory.
• If the actuator is delivered separately from the valve, it is necessary to check, and,
if required, to adjust, the settings of the mechanical stops (Section 3.4) and of
micro-switches (if any) (Section 3.5).
2.2 Actuator Handling
NOTICE
The lifting and handling of the actuator must be done by qualied personnel and in
accordance with the laws and regulations in force. Avoid the lifted actuator to be hung
above the personnel.
! WARNING
The actuator must be lifted by means of a suitable lifting apparatus. The weight of the
actuators is indicated in the technical documentation attached to the equipment itself.
For lifting and moving the actuator, use only hooks tted with safety latch, like the one,
for example, shown in Figure 3.
Figure 3 Example of Hook with Safety Latch

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MAN 606 Rev. 5
Installation 5
Section 2: Installation
Figure 4 Lifting points for OLGA / OLGA-MHP / OLGA-MSJ
! WARNING
3 = Do not lay the actuator on tie rods of cylinder/s and do not lay the actuator on
accessories (manual handpump, manual jackscrew, pneumatic control group etc.).
1, 2 = Lifting points (obligatory)
3 = Balancing point
1 = Point of support
2 = Supports for lateral positioning

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MAN 606 Rev. 5
Installation
• For lifting unbalanced loads, use ropes of different lengths or chains with
adjustable length.
• Check each time the conditions of all lifting equipment used and discard it if
not in perfect working order.
• Do not knot or twist the ropes so as not to reduce the lifting capacity or
produce torsional effects on the load being lifted.
• Use the utmost caution and remain at a safe distance from lifted actuator
unless absolutely necessary; do not stand or pass under suspended loads.
• Pay attention in putting under tension the ropes to prevent the load shifting
sideways in an uncontrolled manner.
• Use slings of such length that the angles of the leg from vertical are as narrow
as possible (αMAX < 20°).
• During handling, do not transport the suspended actuator above staff
members in charge of the operation.
For the transport of OLGA actuators with hydraulic manual hand-pump, when it was
necessary put in horizontal position the tank of MHP, to avoid leakage on oil level stick,
substitute these with a blind-plug during the transport (a specific warning label for
transport in horizontal position is attached on the MHP body); remove the blind plug
and restore the dipstick before operate the actuator with MHP. Biffi hydraulic manual
hand-pump must be maintained with tank in upper position to operate the actuator with
MHP correctly.
Figure 5
6
Section 2: Installation

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MAN 606 Rev. 5
Installation
Figure 6
Figure 7
7
Section 2: Installation
OMFB manual hand-pump should be transported and used with MHP tank in
horizontal position, but in position 3 of follow picture (extracted from OMFB technical
documentation) it is necessary change the position of suction pipe and breather cap.
Figure 8 Fixing Positions
POSITION 1
Standard application POSITION 2 Standard application POSITION 3 Change the position of suction
pipe from A to B and the breather
cap to top side
Invert the position
of the breather cap

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MAN 606 Rev. 5
Installation
8
Section 2: Installation
2.3 Storage
If the actuator needs storage, before installation follow these steps:
• Place it on a wood surface in order not to deteriorate the area of valve coupling.
• Make sure that plastic plugs are present on the hydraulic and electrical
connections (if present).
• Check that the cover of the control group and of the limit switch box (if any) are
properly closed.
If the storage is long-term or outdoor:
• Keep the actuator protected from direct weather conditions.
• Replace plastic plugs of hydraulic and electrical connections (if any) with metal
plugs that guarantee perfect tightness.
• Coat with oil, grease or protection disc, the valve coupling area.
• Periodically operate the actuator (Section 3).

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Installation
Flow line
Drive sleeve
Drive sleeve
N.4 holes ange
9
Section 2: Installation
2.4 Actuator Assembly on the Valve
2.4.1 Types of Assembly
For coupling to the valve, the housing is provided with a ange with threaded holes
according to Bif standard tables (SCN6200; SCN6200-1; SCN6201; SCN6201-1).
The number, dimensions and diameter of the holes are made in accordance with ISO 5211,
but for actuator models 0.3 to 6 the holes are drilled on the centreline in order to allow an
easier assembly of an intermediate ange, when required. This intermediate ange
(or spool-piece) can be supplied when the valve ange can‘t directly match the actuator
ange in its “standard” conguration. For the biggest actuator models, the actuator
ange can be machined in accordance with the valve ange dimensions. The yoke has
bored with keyways for coupling to the valve stem, the dimensions of which are according
to Bif standard tables SCN6200* and SCN6201*. If required, for the standard models
size 0.3 to 6, Bif can supply an insert bush with un-machined bore in accordance with
Bif standard table SCN6202. On request the insert bush bore can be machined by Bif
to couple the valve stem. The particular execution of the ange and bushing allow the
actuator to be rotated by 90° in 4 different positions according to the following gure:
Figure 9 Insert Bush + Intermediate Coupling Flange
Housing
Insert bush
Snap ring
Adaptor ange
Standard position 1
N.8 holes ange
Insert bush
Position 2 Position 3 Position 4

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Installation
10
Section 2: Installation
The Bif insert bush with 2 external keys at 45° allows to position the keyway for the valve
every 90°. Consequently actuator can be mounted in 4 positions at 90° on top of the valve.
For biggest actuator models, the bore of the yoke can be machined according to the
dimensions of valve stem.
2.4.2 Assembly Procedure
NOTICE
Failure to comply with the following procedures may impair product warranty.
! WARNING
Installation, commissioning and maintenance and repair works should be carried out by
qualied staff. A non-conforming assembly could be the source of serious accidents.
For actuator assembly on the valve:
NOTICE
Check that the assembly position, as shown on the documentation, complies with system’s
geometry. Check the consistency of the parts of actuator-valve coupling.
• Operate the actuator so that it reaches the position matching valve position
(Section 3.3).
• Lubricate valve stem with oil or grease.
• Properly clean and remove grease from coupling ange surfaces.
• Connect, if supplied separately, the adjustment insert to valve stem and fasten it
with the special fastening pins.
• Lift the actuator using the special lifting points (Section 2.2).
• Install the actuator so that valve stem inserts in the coupling area. This coupling
should be made without forcing.
• Fasten the two parts with the threaded connections (screws, tie rods, nuts). If
holes of coupling anges are not aligned, adequately operate the actuator if
necessary move the mechanical stops backwards (Section 3.4).
• Fasten threaded connections. Please refer to Table 2.
Table 1.
Position 2 Position 3 Position 4
Rotate insert-bush 180° around
vertical-standard position (1)
Rotate insert-bush 180° around
axis A-A, from position 2
Rotate insert-bush 180° around
axis A-A from position 1
Insert bush turned upside down

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Installation
The screwing values in Table 2 were calculated considering the materials ASTM A320 L7 for
screws or tie rods and ASTM A194 gr.2H for the nuts.
11
Section 2: Installation
2.5 Hydraulic Connections
NOTICE
Check that the values of hydraulic supply available are compatible with those reported on
the identication plate of the actuator.
! WARNING
The connections should be made by qualied staff. Use pipes, ttings and connections
appropriate as for type, material and dimensions.
Connect the actuator to the hydraulic feed line with ttings and pipes in accordance to the
plant specications. They must be sized correctly in order to guarantee the necessary oil
ow for the operation of the actuator, with pressure drops not exceeding the maximum
allowable value. The shape of the connecting piping must not cause excessive stress
to the inlets of the actuator. The piping must be suitably fastened so as not to cause
excessive stress or loosening of threaded connections, if the system undergoes strong
vibrations. Every precaution must be taken to ensure that any solid or liquid contaminants,
which may be present in the hydraulic pipe-work to the actuator, are removed to avoid
possible damages to the unit or loss of performance. The inside of the pipes used for the
connections must be well-cleaned before use: wash them with suitable substances and
blow through them with oil or nitrogen. The ends of the tubes must be well debarred and
cleaned. Once the connections are completed, operate the actuator and check that it
functions correctly, that the operation times meet the plant requirements and that there
are no leakages in the hydraulic connections.
NOTICE
If necessary to mount components not in Bif scope of supply, please check the accessories
mounting hole details in the documents TN 1028 (for metric dimension) or TN 1028U
(for imperial dimension).
Table 2. Nuts Tightening Torque
Threading Tightening Torque (Nm)
M8 20
M10 40
M12 70
M14 110
M16 160
M20 320
M22 420
M24 550
M27 800
M30 1100
M33 1400
M36 1700

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Installation
12
Section 2: Installation
Ground
Figure 10 Junction box on Control group (if foreseen)
2.6 Electrical Connections (If Any)
! WARNING
Use components appropriate as for type, material and dimensions. The connections
should be made by qualied staff. Before carrying out any operation, cut line power off
Safety provisions:
2006/95/EC: Directive for low voltage equipment
(until 19 April 2016) 2014/35/EU from 20 April 2016
2004/108/EC: Directive for the electromagnetic compatibility
(until19 April 2016)
2014/30/EU from 20 April 2016
94/9/CE: Directive and safety instructions for use in hazardous Area
(until 19 April 2016)
2014/34/EU from 20 April 2016
Remove plastic plugs from cables entries
• Screw rmly the cable glands.
• Introduce connection cables.
• Make the connections in compliance with applicable wiring diagrams on the
documentation supplied.
• Screw the cable gland.
• Replace the plastic plugs of unused entries with metal plugs.

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MAN 606 Rev. 5
Installation 13
Section 2: Installation
2.7 Commisioning
! WARNING
Check that values of electrical supply to the control group (if foreseen) are compatible
with those on the plate on the junction box (Figure 10). Installation, commissioning and
maintenance and repair works should be made by qualied staff.
Upon actuator commissioning please carry out the following checks:
• Check that paint is not be damaged during transport, if necessary repair the
damages to paint coat.
• Check that the values of hydraulic supply available in the system are compatible
with those reported on the identication plate of the actuator (Figure 1) and on
the documentation supplied.
• Check that the feed voltage values of the electric components (solenoid valve
coils, micro-switches, pressure switches, etc.) are compatible with those reported
on the identication plate of the actuator (Figure 1).
• Check that the setting of the components of the actuator control unit
(pressure regulator, pressure switches, ow control valves, etc.) meet the
plant requirements.
• Carry out all kinds of operations and check their proper execution (Section 3.3).
• Check the absence of leakages in the cylinder and in hydraulic connections.
If necessary tighten the nuts of the pipe-ttings.
• Check proper operation of all the due signalling (valve position, supply
pressure etc.).
• Make a complete functional test in order to verify all the operations are executed
according to operating schematic diagram supplied.

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Operation and Use14
Section 3: Operation and Use
Section 3: Operation and Use
3.1 Operation Description
In the normal operating situation, the double-acting actuator is fed by pressurised oil
which ows into the relevant cylinder chamber (for example opening). The cylinder
piston stroke causes the actuator operation and the consequent valve movement to the
operational position requested (in this case to the “open” position).
Upon a demand, the closing chamber the cylinder is fed by pressurised oil and at the
same time the oil is discharged from the open chamber into the return line: the actuator
performs the closing operation driven by the piston movement, and the valve moves from
the open position to the close (safety-related) position.
For local or remote operations, please refer to Sections 3.3.1, 3.3.2, and 3.3.3 and prior to
technical documentation furnished with actuators.
Typical schematics for various applications are follow attached for information only.
The power and control systems are supplied on specic customer demand.
! WARNING
For all the relevant information please refer to the specic technical documentation
supplied with actuators.

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Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Operation and Use
Figure 11
1
10
3
7
8
9
17
18
19
20
21
22
23
24
2
3
4
5
6
11
12
13
14
15
16
15
Section 3: Operation and Use
Table 3.
Item Name
1Housing
2Yoke
3 Yoke bushing
4Cover
5 Guide block pin
6 Sliding block
7 Guide block
8 Guide bar
9 Guide block bushing
10 Travel stop screw
11 Cylinder head ange
12 Piston rod bushing
13 Piston rod O-ring
14 Piston rod seal ring
15 Piston rod
16 Piston
17 Piston O-ring
18 Piston guide sliding ring
19 Piston seal ring
20 Cylinder tube
21 End ange
22 Sealing washer
23 Travel stop screw
24 Tie rod

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Operation and Use16
Section 3: Operation and Use
3.2 Residual Risks
! WARNING
The actuator has parts under pressure.
Use the due caution.
Use individual protections provided for by the laws and provisions in force.
3.3 Operations
Refer to specic document: Operating Diagram Furnished.
3.3.1 Local Manual Operation
The OLGA actuators can only have the hydraulic manual override for local operation.
The compact hydraulic control unit mounted on the actuator consist of:
• handpump
• directional control valve to select “to open” or “to close” actuator operation
• relief valve to prevent the oil pressure delivered by the handpump from exceeding
the maximum allowable value
• oil tank
Accessory are available on request, for instance:
• dual pilot operated check valve
• bladder-type or piston-type accumulator delivered
Figure 12