BIFFI OLGAS-QA User manual

Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5
May 2021
Bif OLGAS-QA (Quick Acting)
Spring-Return 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

Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5
Revision Details
May 2021
Revision Details
Revision Details
Rev. Date Description Prepared Checked Approved
5 May 2021 General update (Migration to new template)
4May 2018 Revised data-plate Ermanni Oreci Vigliano
3November 2017 Section 1.3 revision and page 9 Ermanni Oreci Vigliano
2 April 2016 Updated applicable regulation (chapter 1.1.1) Ermanni Oreci Vigliano
1February 2011 General update Ermanni Stoto Vigliano
0Decmber 2010 Document release Ermanni Stoto Vigliano

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Table of Contents
Table of Contents
Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5 May 2021
Table of Contents
Section 1: General Warnings
1.1 Generalities................................................................................................... 1
1.1.1 Applicable Regulation ........................................................................ 1
1.1.2 Terms and Conditions......................................................................... 2
1.2 Introducing the Actuator............................................................................... 2
1.3 Data Sheet .................................................................................................... 3
Section 2: Installation
2.1 Checks upon Actuator Receipt.......................................................................... 4
2.2 Actuator Handling......................................................................................... 4
2.3 Storage ......................................................................................................... 6
2.4 Actuator Assembly on the Valve.................................................................... 6
2.4.1 Types of Assembly .............................................................................. 6
2.4.2 Assembly Procedure......................................................................... 11
2.5 Hydraulic Connections................................................................................ 12
2.6 Electrical Connections (If Any)..................................................................... 13
2.7 Commissioning........................................................................................... 13
Section 3: Operation and Use
3.1 Operation Description................................................................................. 14
3.2 Residual Risks.............................................................................................. 15
3.3 Operations.................................................................................................. 15
3.4 Calibration of the Quick Operation Time ..................................................... 15
3.4.1 Bypass Adjustment........................................................................... 18
3.5 Calibration of the Angular Stroke ................................................................ 20
3.5.1 Calibration of Mechanical Stop on the Cylinder (If Applicable) .................. 21
3.5.2 Calibration of Mechanical Stop Placed on the
Spring Container (If Applicable)........................................................ 22
3.6 Calibration of Microswitches (Bif Limit Switch Box).................................... 23

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Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5
Table of Contents
Table of Contents
Section 4: Maintenance
4.1 Periodic Maintenance.................................................................................. 26
4.2 Extraordinary Maintenance ......................................................................... 26
4.2.1 Replacing the Gaskets of the Hydraulic Cylinder................................ 26
4.2.2 Replacing the Gaskets of the Scotch Yoke Mechanism ...................... 28
4.2.3 Hydraulic Oil Features....................................................................... 29
4.3 Lubrication of Mechanism........................................................................... 30
4.4 Dismantling and Demolition ....................................................................... 31
Section 5: Troubleshooting
5.1 Failure or Breakdown Research.................................................................... 32
Section 6: Spare Parts
6.1 Spare Parts Order........................................................................................ 33
Section 7: Cross Section Tables for Maintenance Activities
Cross Section Tables for Maintenance Activities .................................................... 34
Section 8: Date Report for Maintenance Operations
Date Report for Maintenance Operations .............................................................. 39

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Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5 May 2021
Section 1: General Warnings
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. 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.

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Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5
Section 1: General Warnings
General Warnings
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.
Figure 1 OLGAS-QA parts identication
1.2 Introducing the Actuator
The OLGAS-QA actuator is designed for use in power plants and process plants, of the
chemical, petrochemical and of heavy industry in general. It is used for the operation of
quarter-turn valves if quick acting is required (opening or closing stroke).
The OLGAS-QA actuator is equipped (Figure 1) with a fast operation hydraulic cylinder that,
pressurized, determines the linear motion of the piston contained in it. The linear motion of
the piston is transformed into rotation by a scotch yoke mechanism.
The fast return operation is made by one or more compression helicoidal springs.
The quick acting time can be set through a hydraulic valve with fast discharge.
The OLGAS-QA actuator is equipped with a damping system active in the last degrees of the
angular stroke of fast return.
The expected lifetime of actuator is approximately 25 years as conformity IEC61508
(SIL std reference).
Limit switch box
Damper system
Hydraulic cylinder
Scotch yoke mechanism
Lifting eyelets
Spring container

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Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5 May 2021
Section 1: General Warnings
General Warnings
1.3 Data Sheet
Figure 2 Actuator identication plate
! WARNING
Specic data sheet of each actuator are reported on the identication plate and in the
documentation supplied with the equipment.
! WARNING
It is forbidden to modify the information and the markings without the previous written
authorization of Bif Italia s.r.l. (Figure 2).
Supply uid and pressure from 5 to 250 Bar g maximum
Operating temperature Standard: from –30 °C to +100 °C
Optional: from –60 °C to +140 °C
Operating time
0.2 second to 1 second, depending on:
- valve size, type and torques
- supply pressure
- inertia of the valve and actuator mobile parts
Torque range up to 80000 Nm
Higher values available on request

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MAN610-1 Rev. 5
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 1.3.
• 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 fast discharge valve, (Section 3.4), of
mechanical stops (Section 3.5) and of microswitches (if present) (Section 3.6).
NOTICE
The adjustment of the fast discharge valve completion is shown by a yellow paint dash on
the locking pin of the valve adjustment handle (Section 3.4).
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.

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Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5 May 2021
Section 2: Installation
Installation
Figure 3 Example of hook with safety latch
Figure 4 Lifting points
1 = balancing
2 and 3 = obligatory
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.).
Figure 5 Lifting points

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Section 2: Installation
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 electrical housings (if present) is properly closed.
If the storage is long-term or outdoor (maximum allowable 36 months):
• Keep the actuator protected from direct weather conditions.
• Replace plastic plugs of hydraulic and electrical connections (if present) with metal
plugs that guarantee perfect tightness.
• Coat with oil, grease or protection disc, the valve coupling area.
• Periodically operate the actuator (Section 3.3).
• 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.
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 and SCN6201). 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 not 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.

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0.3 240 93 165 M20 4517 127 70 12 75,6
0.9 310 112 254 M16 8 5 19 150 86 14 93,6
1.5 360 144 298 M20 8 6 19 190 112 18 119,0
3430 195 356 M30 8923 200 157 25 167,8
6520 250 406 M36 814 29 260 200 28 212,8
Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5 May 2021
Section 2: Installation
Installation
Figure 6 Coupling dimensions for scotch yoke standard actuators
Drive sleeve
H max
N.4 holes ange N.8 holes ange
N. THREADED HOLES
P.C.D., number and size according to ISO 5211
(but the holes are on centerline instead of
straddle the centerline)
ø d1 max
Flow line
Top view of the scotch yoke mechanism
(actuator shown in closed position)
Models from 0.3 to 6
Dimensions in millimeters
Actuator model Ø d1Ø d2Ø d3Ø d4N h1h2H max Ø d5WK
Table 1. SCN6200

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14 580 250 483 M36 12 10 29 340 175 45 195,8
18 680 290 603 M36 16 12 32 350 200 45 220,8
32 780 290 603 M36 16 12 32 400 220 50 242,8
35 780 315 603 M36 16 11 32 400 240 50 242,8
42 840 310 603 M36 16 12 32 400 220 50 242,8
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MAN610-1 Rev. 5
Section 2: Installation
Installation
Drive sleeve
H max
N.16 holes ange N.12 holes ange
N. THREADED HOLES
P.C.D., number and size
according to ISO 5211
ø d1 max
Flow line
Top view of the scotch yoke mechanism
(actuator shown in closed position)
Models 14, 18, 32, 35, 42
Figure 7 Coupling dimensions for scotch yoke standard actuators
Dimensions in millimeters
Actuator model Ø d1Ø d2Ø d3Ø d4N h1h2H max Ø d5WK
Table 2. SCN6201

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50 800 315 698 M36 24 10 32 430 240 56 264,8
60 840 315 698 M36 24 10 32 430 240 56 264,8
Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5 May 2021
Section 2: Installation
Installation
Drive sleeve
H max
N.16 holes ange N.12 holes ange
N. THREADED HOLES
Flange sizing according to ISO
ø d1 max
Flow line
Top view of the scotch yoke mechanism
(actuator shown in closed position)
Models 50, 60
Figure 8 Coupling dimensions for scotch yoke standard actuators
Dimensions in millimeters
Actuator model Ø d1Ø d2Ø d3Ø d4N h1h2H max Ø d5WK
Table 3. SCN6201-1

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Section 2: Installation
Installation
Table 4.
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, provided its dimensions
match the maximum stem acceptance of the bush according to Bif table TN1005,
enclosed. 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
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
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 Drive sleeve
Snap ring
Adaptor ange
Standard position 1
Position 2 Position 3 Position 4
Flow line
Drive sleeve
Insert bush
Insert bush
N.4 holes ange N.8 holes ange

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Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5 May 2021
Section 2: Installation
Installation
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.
! WARNING
The actuator should be in the spring idle position (spring totally extended). The hydraulic
cylinder should not be pressurized.
• Check that the actuator position is matched with valve position.
• 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 holes.
• Fasten the two parts with the threaded connections (screws, tie rods, nuts).
• If holes of coupling anges are not aligned, adequately operate the actuator
progressively pressurizing the cylinder until the assembly is possible. If necessary
move the mechanical stops backwards (Section 3.4).
• Fasten threaded connections. Please refer to Table 5.

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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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Section 2: Installation
Installation
The screwing values in Table 1 were calculated considering the materials ASTM A320 L7 for
screws or tie rods and ASTM A194 gr.2H for the nuts.
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. The connections should be made by
qualied staff.
NOTICE
Use pipes and connections appropriate as for type, material and dimensions. Use motor
uid with purity degree ISO 4406 17/14 or NAS 1638 Class 8 (AS4059 Class 4B-F). For
special applications the lower contamination degree is required. Please refer to technical
data sheet for actuators supplied.
• Properly burr the ends of rigid pipes if present.
• Properly clean the interior of pipes sending through them plenty of the supply uid
used in the system.
• Mould and fasten the connection pipes so that no irregular strains at entries or
loosening of threaded connections occur.
• Make the connections according to the functional diagram.
• Check the absence of leakages from hydraulic connections.
! WARNING
For the characteristics of the motor uid please refer to the documentation supplied.
Table 5. Nuts Tightening Torque

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Section 2: Installation
Installation
2.6 Electrical Connections (If Any)
NOTICE
Use components appropriate as for type, material and dimensions.
! WARNING
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 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 plugs of unused entries with metal plugs.
2.7 Commissioning
! WARNING
Installation, commissioning and maintenance and repair works should be made by
qualied staff. Any calibration relative to functional aspects of the actuator are preset at
the factory. Before any modications please read Bif Italia s.r.l.
Upon actuator commissioning please carry out the following checks:
• Check the fast discharge valve adjustment (Section 3.4).
• 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 2) and on
the documentation supplied.
• Check the power voltage of electrical components complies with the one reported
on the documentation supplied.
• Check the absence of leakages in the cylinder and in hydraulic connections.
• Check that paint is intact and in case renovate it according to the specication on
order conrmation.
• Carry out all kinds of operations and check their proper execution (Section 3.3).
• Check the proper operation of all the warnings.
NOTICE
The fast discharge valve adjustment is completed when a yellow paint dash is present on
the locking pin of the adjustment handle of the valve (Section 3.4).

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MAN610-1 Rev. 5
Section 3: Operation and Use
Operation and Use
Section 3: Operation and Use
3.1 Operation Description
The actuator is operated by:
1. Pressurized motor uid.
2. Elastic return of compression helicoidally spring.
In the rst case the alimentation uid pressurizes a chamber of the cylinder and compresses
the spring (Figure 11); this determines the linear motion of the piston and the consequent
rotation motion of the scotch yoke mechanism to which valve stem is coupled.
The uid contained in the other chamber is discharged through the return line.
In the second case, cutting off or in case of lack of pressure to the cylinder and to the pilot
of the fast discharge valve, the opening of the latter is determined, the fast discharge of
motor uid, the quick extension of the spring and the consequent fast operation of the
actuator. The motor uid going out from one chamber of the cylinder partially returns in
the other chamber and partially ows through the discharge line.
Angular stroke %
Time (ms)
Quick operation
signal
Quick operation
time
Damper action
Figure 10 Angular Stroke/Quick Operation Time Diagram
The last part of the cylinder stroke is strongly slowed down by a damper with bypass
system that throttles the outlet of the motor uid. Figure 10 shows the diagram angular
stroke/time. Bypass action must be regulate to make more slowly the last part of cylinder
stroke (see Section 3.4.1).
The power and control systems are supplied on specic customer demand.
For the relevant information please refer to the specic documentation supplied.

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Section 3: Operation and Use
Operation and Use
Figure 11 Generic Operating Diagram
Pilot and
control
system on
demand
Discharge lineSupply line
Electric connection from
remote control room
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
The operations are carried out sending the proper signal through the control system
in compliance with Customer specications. Please refer to the functional diagram and
specic documentation supplied.
3.4 Calibration of the Quick Operation Time
The calibration of the quick operation time of the actuator is carried out through the
adjustment of the fast discharge valve positioned in the tail ange of the hydraulic cylinder,
see Figure 12.
The following calibration procedure allows modifying the quick operation time, as shown
in Figure 15.
NOTICE
The calibration should be carried out by qualied staff.

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Section 3: Operation and Use
Operation and Use
Knob for dump-valve adjustment
Figure 12 Dump-valve manual regulation
Figure 13 Dump-valve manual regulation label placed on knob
Figure 14 Dump-valve manual regulation