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BIFFI OLGAS-QA Installation, Operation And Maintenance Manual

Spring-return hydraulic actuator
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Biffi OLGAS-QA (Quick Acting)
Spring-Return Hydraulic Actuator
Copyright © Biffi. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website www.biffi.it or from your nearest Biffi Center:
Biffi Italia s.r.l. - Strada Biffi 165, 29017 Fiorenzuola d'Arda (PC) – Italy PH: +39 0523 944 411 – biffi_italia@biffi.it
Installation, Operation and Maintenance Manual
MAN610-1 Rev. 5
May 2021

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  • Page 1 Spring-Return Hydraulic Actuator Copyright © Biffi. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website www.biffi.it or from your nearest Biffi Center: Biffi Italia s.r.l. - Strada Biffi 165, 29017 Fiorenzuola d'Arda (PC) – Italy PH: +39 0523 944 411 – biffi_italia@biffi.it...
  • Page 2 Revision Details Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Revision Details Rev. Date Description Prepared Checked Approved May 2021 General update (Migration to new template) May 2018 Revised data-plate Ermanni Orefici Vigliano November 2017 Section 1.3 revision and page 9 Ermanni Orefici Vigliano...

  • Page 3: Table Of Contents

    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 Calibration of Microswitches (Biffi Limit Switch Box) ........23 Table of Contents...
  • Page 4 Table of Contents Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Section 4: Maintenance Periodic Maintenance .................. 26 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 ...............

  • Page 5: Section 1: General Warnings

    Biffi 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 Biffi Italia s.r.l. and may be modified without prior notice. All rights reserved.

  • Page 6: Terms And Conditions

    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.

  • Page 7: Data Sheet

    Specific data sheet of each actuator are reported on the identification 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 Biffi Italia s.r.l. (Figure 2). Figure 2 Actuator identification plate General Warnings...

  • Page 8: Section 2: Installation

    Section 2: Installation Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Section 2: Installation Checks upon Actuator Receipt • Check that the model, the serial number of the actuator and the technical data reported on the identification plate correspond with those of order confirmation, refer to Section 1.3.
  • Page 9 Installation, Operation and Maintenance Manual Section 2: Installation MAN610-1 Rev. 5 May 2021 Figure 3 Example of hook with safety latch Figure 4 Lifting points 1 = balancing 2 and 3 = obligatory Figure 5 Lifting points 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...

  • Page 10: Storage

    For coupling to the valve, the housing is provided with a flange with threaded holes according to Biffi 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...
  • Page 11 Installation, Operation and Maintenance Manual Section 2: Installation MAN610-1 Rev. 5 May 2021 Figure 6 Coupling dimensions for scotch yoke standard actuators Models from 0.3 to 6 Drive sleeve ø d1 max N. THREADED HOLES P.C.D., number and size according to ISO 5211 (but the holes are on centerline instead of straddle the centerline) Flow line...
  • Page 12 Section 2: Installation Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Figure 7 Coupling dimensions for scotch yoke standard actuators Models 14, 18, 32, 35, 42 Drive sleeve ø d1 max N. THREADED HOLES P.C.D., number and size according to ISO 5211 Flow line Top view of the scotch yoke mechanism...
  • Page 13 Installation, Operation and Maintenance Manual Section 2: Installation MAN610-1 Rev. 5 May 2021 Figure 8 Coupling dimensions for scotch yoke standard actuators Models 50, 60 Drive sleeve ø d1 max N. THREADED HOLES Flange sizing according to ISO Flow line Top view of the scotch yoke mechanism (actuator shown in closed position) Table 3.
  • Page 14 A-A from position 1 Insert bush turned upside down The Biffi 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.

  • Page 15: Assembly Procedure

    Installation, Operation and Maintenance Manual Section 2: Installation MAN610-1 Rev. 5 May 2021 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 qualified staff.

  • Page 16: Hydraulic Connections

    Section 2: Installation Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Table 5. Nuts Tightening Torque Threading Tightening Torque (Nm) 1100 1400 1700 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.

  • Page 17: Electrical Connections (If Any)

    Installation, commissioning and maintenance and repair works should be made by qualified staff. Any calibration relative to functional aspects of the actuator are preset at the factory. Before any modifications please read Biffi Italia s.r.l. Upon actuator commissioning please carry out the following checks: •...

  • Page 18: Section 3: Operation And Use

    Section 3: Operation and Use Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Section 3: Operation and Use Operation Description The actuator is operated by: Pressurized motor fluid. Elastic return of compression helicoidally spring. In the first case the alimentation fluid pressurizes a chamber of the cylinder and compresses the spring (Figure 11);...

  • Page 19: Residual Risks

    Installation, Operation and Maintenance Manual Section 3: Operation and Use MAN610-1 Rev. 5 May 2021 Figure 11 Generic Operating Diagram Pilot and control system on demand Electric connection from Supply line Discharge line remote control room 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.
  • Page 20 Section 3: Operation and Use Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Figure 12 Dump-valve manual regulation Knob for dump-valve adjustment Figure 13 Dump-valve manual regulation label placed on knob Figure 14 Dump-valve manual regulation Operation and Use...
  • Page 21 It is absolutely forbidden to go below minimum time of quick operation set under the terms of the contract. Please refer to the documentation supplied. NOTICE Factory calibration is made by Biffi Italia s.r.l. with the actuator NOT assembled to the valve. Figure 15 Dump-valve action in angular stroke / quick operation time diagram...

  • Page 22: Bypass Adjustment

    Section 3: Operation and Use Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 3.4.1 Bypass Adjustment Figure 16 Protection cap Adjustable needle for bypass action Figure 17 Bypass action to angular stroke / quick operation time diagram Angular stroke/quick operation time diagram Bypass valve opening Time (ms) Operation and Use...
  • Page 23 Installation, Operation and Maintenance Manual Section 3: Operation and Use MAN610-1 Rev. 5 May 2021 Remove the protection cap from adjusting needle-valve and turn it clockwise to increase throttling-action and consequently to slow the last part of cylinder stroke. To decrease throttling-action, turn the needle for by-pass in anti-clockwise direction.

  • Page 24: Calibration Of The Angular Stroke

    Section 3: Operation and Use Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Calibration of the Angular Stroke The angular stroke of the yoke can be adjusted between 82°÷98° (±4° with respect to the nominal positions of complete opening and closing) using the mechanical stops screwed in the tail flange of the spring container and in the tail flange of the cylinder (if present) (Figure 19).

  • Page 25: Calibration Of Mechanical Stop On The Cylinder (If Applicable)

    Installation, Operation and Maintenance Manual Section 3: Operation and Use MAN610-1 Rev. 5 May 2021 3.5.1 Calibration of Mechanical Stop on the Cylinder (If Applicable) WARNING Before calibration of mechanical stop completely relieve pressure from the cylinder. WARNING Do not alter the adjustment made unless the actuator is disassembled from the valve. For the adjustment of the mechanical stop on the end flange of the cylinder, follow these steps (Figure 20): Remove with the specific wrench (c1) the plug (t).

  • Page 26: Calibration Of Mechanical Stop Placed On The Spring Container (If Applicable)

    Section 3: Operation and Use Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 3.5.2 Calibration of Mechanical Stop Placed on the Spring Container (If Applicable) WARNING Before calibration of mechanical stop completely relieve pressure from the cylinder. WARNING Do not alter the adjustment made unless the actuator is disassembled from the valve.

  • Page 27: Calibration Of Microswitches (Biffi Limit Switch Box)

    MAN610-1 Rev. 5 May 2021 Calibration of Microswitches (Biffi Limit Switch Box) NOTICE The operation of end of stroke microswitches should occur before the stop of the stroke of the actuator due to mechanical stops. Set the relative cams adequately.
  • Page 28 Section 3: Operation and Use Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Figure 22 Biffi microswitches box Figure 23 Cam adjustment Figure 24 Adjustment of the magnetic proximity micro Operation and Use...
  • Page 29 Installation, Operation and Maintenance Manual Section 3: Operation and Use MAN610-1 Rev. 5 May 2021 • Operate only the microswitch corresponding with the direction of the operation being carried out, as clearly shown on the microswitch. • If the indicator of the box (Picture 8), does not signal the proper position of the valve but is turned by 90°: •...

  • Page 30: Section 4: Maintenance

    Installation, commissioning and maintenance and repair works should be carried out by qualified staff. Before carrying out any operation, cut power off from the electrical line. Periodic Maintenance OLGAS-QA actuators are designed to operate long-term in heavy-duty operating conditions, without maintenance needs. NOTICE Periodicity and regularity of inspections is particularly influenced by specific environmental and working conditions.
  • Page 31 Installation, Operation and Maintenance Manual Section 4: Maintenance MAN610-1 Rev. 5 May 2021 • Remove the plug (8) from the cover of the adjustment screw (21). • Bring the adjustment screw back to the maximum (20) to let the spring loosen. WARNING Before disassembling the cylinder, make sure the above operation of spring release is done.

  • Page 32: Replacing The Gaskets Of The Scotch Yoke Mechanism

    Section 4: Maintenance Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 4.2.2 Replacing the Gaskets of the Scotch Yoke Mechanism WARNING Before executing any maintenance operation, it is necessary to intercept the hydraulic supply line and discharge pressure from the cylinder of the actuator. If it is possible to operate the actuator, it is essential to take it to the idle position, with the spring completely extended, otherwise it is necessary to disassemble the valve actuator and follow the steps below.

  • Page 33: Hydraulic Oil Features

    Carry out a few operations with proper clean oil (Section 4.2.3) to check there are no leakages from the gaskets. 4.2.3 Hydraulic Oil Features The following oils is used by Biffi and suggested for lubrication: Table 6. Standard temperature conditions (-30 °C/+85 °C): Producer...

  • Page 34: Lubrication Of Mechanism

    For this operation it is necessary to disassemble the mechanism cover. In larger actuators the lubrication can be performed through the inspection holes of the cover after removing the plugs. The following grease is used by Biffi for standard working temperature and suggested for re-lubrication: Table 7 .

  • Page 35: Dismantling And Demolition

    Installation, Operation and Maintenance Manual Section 4: Maintenance MAN610-1 Rev. 5 May 2021 Dismantling and Demolition Before starting the disassembly, a large area should be created around the actuator so to allow any kind of movement without problems of further risks created by worksite. WARNING Before disassembling the actuator, it is necessary to close the hydraulic supply line and discharge pressure from the cylinder of the actuator, from the control unit and from the...

  • Page 36: Section 5: Troubleshooting

    Section 5: Troubleshooting Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Section 5: Troubleshooting Failure or Breakdown Research Table 8. Troubleshooting Event Possible cause Remedy Lack of power supply Open line stop valve Blocked valve Repair or replace Actuator does Low supply pressure Reset...

  • Page 37: Section 6: Spare Parts

    Section 6: Spare Parts Spare Parts Order For spare parts order to the relevant Biffi office please make reference to Biffi order confirmation concerning all the supply. For any specific spare part for some actuator model please refer to the serial number of the actuator (Section 1.2) and to the specific cross section tables, supplied in the...

  • Page 38: Cross Section Tables For Maintenance Activities

    Section 7: Cross Section Tables Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Section 7: Cross Section Tables for Maintenance Activities For the specific cross section tables please refer to the documentation delivered with the supply. Figure 26 Scotch Yoke Mechanism Table 9.
  • Page 39 Installation, Operation and Maintenance Manual Section 7: Cross Section Tables MAN610-1 Rev. 5 May 2021 Figure 27 Quick Acting Hydraulic Cyclinder Cross Section Tables...
  • Page 40 Section 7: Cross Section Tables Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Table 10. Parts List Item Description Material Bushing Fe+Bz+Teflon Piston rod seal ring * Teflon + graphite O-ring * Viton rubber Scraper ring * Teflon + Viton rubber Scraper ring flange Aluminium Screw...
  • Page 41 Installation, Operation and Maintenance Manual Section 7: Cross Section Tables MAN610-1 Rev. 5 May 2021 Figure 28 Spring Cartridge Table 11. Parts List Item Description Material Carbon steel Washer Carbon steel Sealing washer * PVC Stop setting screw Carbon steel Spring container Carbon steel Spring...
  • Page 42 Section 7: Cross Section Tables Installation, Operation and Maintenance Manual May 2021 MAN610-1 Rev. 5 Figure 29 Assembly Kit Table 12. Parts List Item Description Material Screw Teflon coated alloy steel Gasket * Fiber Side plate Carbon steel Gasket * Fiber Washer Carbon steel Adaptor bush...

  • Page 43: Section 8: Date Report For Maintenance Operations

    Installation, Operation and Maintenance Manual Section 8: Date Report for Maintenance Operations MAN610-1 Rev. 5 May 2021 Section 8: Date Report for Maintenance Operations Last maintenance operation date: (in factory, on delivery): ……… exec. by : ………… ……… exec. by : ………… ………...
  • Page 44 VCIOM-08598-EN ©2021 Biffi. All rights reserved. Biffi Italia s.r.l. Strada Biffi 165 The contents of this publication are presented for information purposes only, 29017 Fiorenzuola d’Arda (PC) and while every effort has been made to ensure their accuracy, they are not...

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