BIFFI OLGA-H User manual

Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
February 2022
Bif OLGA-H
High Pressure Double-Acting Hydraulic Actuator
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

February 2022
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Revision Details
Revision Details
Revision Details
Rev. Date Description Prepared Checked Approved
6 February 2022 General update (Migration to new template)
5 April 2018 Updated data plate Ermanni Oreci Vigliano
4 April 2016 Updated applicable regulation (chapter 1.1.1) Ermanni Oreci Vigliano
3February 2013 Updated chapter 5.1.1 Ermanni Stoto Vigliano
2July 2012 General update Ermanni Stoto Vigliano
1 November 2010 General update Ermanni Stoto Vigliano
0May 1999 Document release Lazzarini Aliani Ziveri

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Table of ContentsInstallation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
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............................................................................... 2
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.................................................................... 8
2.4.1 Types of Assembly.............................................................................. 8
2.4.2 Assembly Procedure......................................................................... 10
2.5 Hydraulic Connections................................................................................ 11
2.6 Electrical Connections (If Any)..................................................................... 12
2.7 Commissioning........................................................................................... 13
Section 3: Operation and Use
3.1 Operation Description................................................................................. 14
3.2 Residual Risks.............................................................................................. 15
3.3 Operations.................................................................................................. 15
3.3.1 Local Manual Operation ....................................................................15
3.3.2 Emergency Manual Operation by MHP ............................................. 17
3.3.3 Emergency Manual Operation by MSJ-MHW .....................................18
3.4 Calibration of the Angular Stroke ................................................................ 18
3.5 Calibration of Microswitches (Bif Limit Switch Box Only)............................ 23
3.6 Calibration of the Operation Time .............................................................. 25
Section 4: Operational Tests and Inspections
Operational Tests and Inspections......................................................................... 27

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February 2022
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Table of Contents
Table of Contents
Section 5: Maintenance
5.1 Periodic Maintenance.................................................................................. 28
5.2 Extraodinary Maintenance .......................................................................... 32
5.2.1 Replacement of High Pressure Cylinder Seals .................................... 32
5.2.2 Replacement of Seals for Actuators with Bif Manual Handpump ..... 36
5.3 Lubrication of Mechanism........................................................................... 40
5.4 Dismantling and Demolition ....................................................................... 41
Section 6: Troubleshooting
6.1 Failure or Breakdown Research.................................................................... 42
Section 7: Layouts
7.1 Spare Parts Order........................................................................................ 43
7.2 Parts List for Maintenance and Replacing Procedure ................................... 44
Section 8: Date Report for Maintenance Operations
Date Report for Maintenance Operations .............................................................. 52

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
General Warnings
Section 1: General Warnings
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
NOTICE
Bif Italia s.r.l. pays the highest attention to collecting and verifying the documentation
contained in this Installation, Operation and Maintenance Manual. However, Bif Italia
s.r.l. is not liable for any mistakes contained in this manual and 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.
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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February 2022
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 1: General Warnings
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 (Figure1).
Figure 1 Data plate
1.3 Introducing the Actuator
The hydraulic actuator series OLGA-H was engineered and is manufactured to provide
maximum torque output with minimum supply pressure. The OLGA-H actuators are
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.

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
General Warnings
Section 1: General Warnings
General Warnings
High pressureHigh pressure
control valvecontrol valve
enclosure (optional)enclosure (optional)
Valve positionValve position
indicatorindicator
Hydraulic cylinderHydraulic cylinder
Optional forOptional for
OLGA-H-MHPOLGA-H-MHP
models or second models or second
pneumatic cylinder for pneumatic cylinder for
"double cylinders" models"double cylinders" models
HydraulicHydraulic
cylindercylinder
Scotch yoke Scotch yoke
mechanismmechanism
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”
ManualManual
handpump handpump
(optional)(optional)

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 2: Installation
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,
refer to 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.
• 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
microswitches (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.
! WARNING
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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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
Section 2: Installation
Installation
Figure 4 Lifting points for OLGA-H / OLGA-H MHP / OLGA-H MSJ
1-2 = lifting points (obligatory)
3= balancing point
Figure 5
1 = point of support
2 = supports for lateral positioning
! WARNING
3 = don’t lay the actuator on tie-rods of cylinder/s and don’t lay the actuator on accessories
(manual override, pneumatic control group, etc.).

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 2: Installation
Installation
Figure 6
BIFFI ITALIA
LIFTING LUGS TO BE USED FOR THE
ACTUATOR ONLY. DO NOT LIFT VALVE AND
ACTUATOR TOGETHER.
DO NOT DISASSEMBLE TOP OR
BOTTOM COVER.
SPRING LOADED.
POTENTIAL ELECTROSTATIC CHARGE
HAZARD
BIFFI IS NOT LIABLE FOR ANY PERSONNEL
INJURY DUE TO INCORRECT USE
REFER TO IOM
• 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.
! WARNING
Do not use the lifting eyelets on actuator to lift valve + actuator assembly.

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
Section 2: Installation
Installation
For transporting OLGA-H actuators with hydraulic manual handpump, when it is necessary,
put the tank of MHP in horizontal position to avoid leakage on oil level stick. Substitute this
with a blind plug during the transport (a specic warning label for transport in horizontal
position is attached on the MHP body), remove the blind plug and restore the dipstick
before operating the actuator with MHP.
Bif hydraulic manual handpump must be maintained with tank in upper position to
operate the actuator with MHP correctly.
OMFB manual handpump should be transported and used with MHP tank in horizontal
position, but in position 3 of the following gure (extracted from OMFB technical
documentation), it’s necessary to change the position of suction pipe and breather cap.
Figure 7
Figure 8

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February 2022
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 2: Installation
Installation
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
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 centerline 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 unmachined 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 Figure 10.
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).
Figure 9 Fixing positions

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
Section 2: Installation
Installation
Figure 10 Insert bush + intermediate coupling ange
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
Table 1.
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.
Housing
Insert Bush
Drive Sleeve
Snap Ring
Adaptor Flange
N.4 Holes Flange
Insert Bush
N.8 Holes Flange
Drive Sleeve
Flow Line
Standard Position 1
Position 1 Position 3Position 2

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 2: Installation
Installation
Table 2. Nuts tightening torque
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.
2.4.2 Assembly Procedure
! WARNING
Failure to comply with the following procedures may impair product warranty.
NOTICE
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.
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, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
Section 2: Installation
Installation
2.5 Hydraulic Connections
! WARNING
Check that the values of hydrualic supply available in the system are compatible with those
reported on the identication plate of the actuator.
NOTICE
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.

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 2: Installation
Installation
Ground
2.6 Electrical Connections (If Any)
NOTICE
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.
! WARNING
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 cable 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.
Figure 11 Junction box on control group (if foreseen)

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
Section 2: Installation
Installation
2.7 Commissioning
! 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 11). 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 damaged during transport. If necessary, repair the
damages to paint coat.
• Before start up and after every 6 months, check accumulator pre-charging
pressure (please check the value in technical data sheet supplied).
• 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, microswitches, 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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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 3: Operation and Use
Operation and Use
Section 3: Operation and Use
3.1 Operation Description
In the normal operating situation, the double-acting actuator is fed by pressurized 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 pressurized 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.
Item Name
1Housing
2Yoke
3Yoke bushing
4Cover
5Guide block pin
6Sliding block
7Guide block
8Guide bar
9Guide block bushing
10 Travel stop screw
11 Cylinder head ange
12 Piston rod bushing
2
3
24
23
22
21
20
19
18
17
9
8
7
3
10
1
Table 3. Parts list
Figure 12
Item Description
13 Piston rod O-ring
14 Piston rod seal ring
15 Piston rod
16 Piston
17 Piston O-ring
18 Piston seal ring
19 Piston guide sliding ring
20 Cylinder tube
21 Cylinder end ange
22 Travel stop screw
23 Plug
24 Tie rod

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6 February 2022
Section 3: Operation and Use
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)
For local or remote operations, please refer to Section 3.3.1, 3.3.2, 3.3.3 and prior
to technical documentation furnished with actuators. Typical schematics for various
applications are attached for information only. The power and control systems are
supplied on specic customer demand.
NOTICE
For all the relevant information please refer to the specic technical
documentation supplied.
Figure 13 OLGA-H with hydraulic manual handpump
3.3.1 Local Manual Operation

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Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 3: Operation and Use
Operation and Use
Figure 14
1. Scotch yoke mechanism
2. Hydraulic cylinder
3. Hydraulic cylinder override
D=Directional control valve
P=Handpump
R=Relief valve
O=Oil tank
1 2
3PR
O
The OLGA-H 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
Accessories are available on request, for instance:
• dual pilot-operated check valve
• bladder-type or piston-type accumulator delivered by the handpump from
exceeding the maximum allowable value. On request, the emergency manual
override can be included in the power pack.