BIFFI RPHD Installation, Operation And Maintenance Manual
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BIFFI RPHD Installation, Operation And Maintenance Manual

Double-acting hydraulic actuator
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Biffi RPHD
Double-Acting Hydraulic Actuator
Copyright © Biffi. The information in this document is subject to change without notice. Updated installation, operation and maintenance manuals 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' A rda (PC) – Italy PH: +39 0523 944 411 – biffi_italia@biffi.it
Installation, Operation and Maintenance Manual
MAN 623 Rev. 5
April 2024

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  • Page 1 Copyright © Biffi. The information in this document is subject to change without notice. Updated installation, operation and maintenance manuals 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’ A rda (PC) – Italy PH: +39 0523 944 411 – biffi_italia@biffi.it...
  • Page 2 Notes Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 This page is intentionally left blank.

  • Page 3: Table Of Contents

    Installation, Operation and Maintenance Manual Table of Contents MAN 623 Rev. 5 April 2024 Table of Contents Section 1: General Warnings Generalities ....................... 1 1.1.1 Applicable Regulation ................. 1 1.1.2 Terms and Conditions ................. 2 Identification Plate ....................2 Introducing the Actuator ..................3 Data Sheet .........................
  • Page 4 Notes Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 This page is intentionally left blank.

  • 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 (IOM) manual. However, Biffi 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 Biffi Italia s.r.l.

  • Page 6: Terms And Conditions

    MAN 623 Rev. 5 1.1.2 Terms and Conditions Biffi Italia s.r.l. guarantees that all the items produced are free of defects in workmanship and manufacturing materials and meet relevant current specifications, provided they are installed, used and serviced according to the instructions contained in the present manual.

  • Page 7: Introducing The Actuator

    MAN 623 Rev. 5 April 2024 Introducing the Actuator RPHD are hydraulic high-pressure double-acting actuators, suitable for any quarter-turn application such as ball, plug, butterfly valves or dampers, in both ON-OFF and MODULATING heavy-duty service. The actuator (see Figure 2) is made up of a rack and pinion mechanism, which transforms the linear movement of the hydraulic cylinder (on closing or opening), into the rotary movement for the valve operation.

  • Page 8: Data Sheet

    Section 1: General Warnings Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Data Sheet Supply fluid Hydraulic oil or fire-resistant fluid Operating temperature Standard: from -20 to +80 °C Optional: from -60 to +100 °C (over contact factory) Design pressure Design pressure of the cylinder 220 barg Supply pressure...

  • Page 9: Section 2: Installation

    Installation, Operation and Maintenance Manual Section 2: Installation MAN 623 Rev. 5 April 2024 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 (Section 1.2).
  • Page 10 Section 2: Installation Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Figure 3. Lifting and Storage Method 1 and 2= LIFTING POINTS (OBLIGATORY) WARNING 1 = point of support (lifting points) 2 = do not lay the actuator on tie-rods Do not lay the actuator on accessories (manual hand pump, manual jackscrew, hydraulic control group, etc.).

  • Page 11: Storage

    (cylinder axis parallel or perpendicular to the pipeline axis). NOTICE To fix the actuator to the valve flange, the stud bolts and nuts supplied by Biffi must be used. In case the actuator is supplied without stud bolts and nuts, the following materials must be used as a minimum: •...
  • Page 12 Section 2: Installation Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Figure 4. RPHD Hydraulic Actuators - Coupling Dimensions VIEW FROM X STANDARD ISO 5211 ALTERNATIVE ØF HOLES POSITION HOLES POSITION ØE PCDØL ØC N° 4 THREADED HOLES ØP...

  • Page 13: Assembly Procedure

    Installation, Operation and Maintenance Manual Section 2: Installation MAN 623 Rev. 5 April 2024 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 qualified staff.

  • Page 14: Hydraulic Connections

    Section 2: Installation Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Hydraulic Connections NOTICE Check if the values of hydraulic supply available in the system are compatible with those reported on the identification plate of the actuator. The connections should be made by qualified staff.

  • Page 15: Electrical Connections (If Any)

    Installation, Operation and Maintenance Manual Section 2: Installation MAN 623 Rev. 5 April 2024 Electrical Connections (If Any) WARNING Use components appropriate as per type, material and dimensions. The connections should be made by qualified staff. Before carrying out any operation, cut line power off.

  • Page 16: Section 3: Operation And Use

    Section 3: Operation and Use Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Section 3: Operation and Use Operation Description The oil supply pressurizes the hydraulic cylinder chamber relevant to the operation to carry out (opening or closing) (see following pages). This pressure starts the linear motion of the piston and the consequent rotation motion of the rack and pinion mechanism, to which the valve stem is coupled.
  • Page 17 Installation, Operation and Maintenance Manual Section 3: Operation and Use MAN 623 Rev. 5 April 2024 Figure 6. Local Control Only for Double-Acting Actuators Parts: 1. Rack and pinion mechanism 2. Hydraulic cylinder 3. Hydraulic manual override D. Directional control valve P = Hand pump R = Relief valve O = Oil tank...
  • Page 18 Section 3: Operation and Use Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Figure 7. Local Control Suitable Also for Remote Oil Supply for Double-Acting Actuators Parts: 1. Rack and pinion mechanism 2. Hydraulic cylinder 3. Hydraulic manual selector 4.

  • Page 19: Residual Risks

    Installation, Operation and Maintenance Manual Section 3: Operation and Use MAN 623 Rev. 5 April 2024 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. Operations The operations are carried out sending the proper signal through the control system in compliance with customer specifications.
  • Page 20 Section 3: Operation and Use Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Figure 8. Table 3. Hydraulic Cylinder Diameter Wrench C1 (mm) Wrench C2 (mm) From 28 to 40 From 45 to 60 From 70 to 175 From 200 to 235 Operation and Use...

  • Page 21: Calibration Of Microswitches (If Foreseen)

    Installation, Operation and Maintenance Manual Section 3: Operation and Use MAN 623 Rev. 5 April 2024 Calibration of Microswitches (If Foreseen) NOTICE Operate only the microswitches corresponding to the direction of operation being carried out, as clearly reported on the microswitch. Microswitches are placed inside a special box, see Figure 9.
  • Page 22 Section 3: Operation and Use Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Figure 10. Cam Adjustment If the index (Figure 11), does not signal the proper position of the valve but is turned by 90°: • Remove the roll pin placed on the position indicator (index).

  • Page 23: Calibration Of The Operation Time

    April 2024 Calibration of the Operation Time The calibration of the operation time is made by Biffi Italia s.r.l. according to customer requirements and to technical data sheet included in technical documentation. If necessary, its possible to modify or reset the operating time through two flow regulation valves placed on inlets of hydraulic cylinder (Figure 12).

  • Page 24: Section 4: Operational Tests And Inspections

    Section 4: Operational Tests and Inspections Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Section 4: Operational Tests and Inspections NOTICE To ensure the guaranteed SIL grade, according to IEC 61508, the functionality of actuator must be checked with regular intervals of time, as described in the Safety Manual.

  • Page 25: Section 5: Maintenance

    Installation, commissioning, and maintenance and repair works should be carried out by qualified staff. Periodic Maintenance RPHD 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 26 Refer to the technical actuator data sheet. Table 5. Hydraulic Oil List by Biffi Italia s.r.l. for Refilling in Different Working Conditions Standard temperature conditions (-30 °C to +85°):...

  • Page 27: Extraordinary Maintenance

    Installation, Operation and Maintenance Manual Section 5: Maintenance MAN 623 Rev. 5 April 2024 Extraordinary Maintenance If there are leaks in the hydraulic cylinder or a malfunction in the mechanical components, or in case of scheduled preventive maintenance, the actuator must be disassembled and seals must be replaced with reference to the following general sectional drawing and adopting the following procedures: 5.2.1...
  • Page 28 Section 5: Maintenance Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 5.2.1.1 Seals Replacement If the O-rings/seals must be replaced, remove the existing one from its groove, clean the groove carefully, and lubricate it with a protective oil film (ARNICA 22 or the oil used in the hydraulic cylinder).
  • Page 29 Installation, Operation and Maintenance Manual Section 5: Maintenance MAN 623 Rev. 5 April 2024 Figure 13. RPHD Double-Acting Hydraulic Actuator 13 12 14 28 7 11 3 30-31 15 27 29 Table 6. Parts List Item Description Item Description Housing...

  • Page 30: Dismantling And Demolition

    Section 5: Maintenance Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Dismantling and Demolition WARNING Before starting the disassembly, a large area should be created around the actuator to allow any kind of movement without problems of further risks created by work site. Before disassembling the actuator, it is necessary to close the pneumatic feed line and discharge pressure from the cylinder of the actuator, from the control unit and from the accumulator tank, if present.

  • Page 31: Section 6: Troubleshooting

    Actuator does not work Wrong position of the distributor of the Restore correct position manual hydraulic group Failure of the control group Call Biffi Italia s.r.l. Customer Service Low supply pressure Restore (Section 1.4) Low supply pressure Restore (Section 1.4)

  • Page 32: Section 7: Layouts

    Section 7: Layouts Spare Parts Order For spare parts order to the relevant Biffi office, please make reference to Biffi order confirmation concerning all the supply, and serial number of the actuator (Section 1.2) for any specific spare part for a specific actuator model.

  • Page 33: Parts List For Maintenance And Replacement Procedure

    Installation, Operation and Maintenance Manual Section 7: Layouts MAN 623 Rev. 5 April 2024 Parts List for Maintenance and Replacement Procedure Figure 14. RPHD Hydraulic Actuator 48-49 Layouts...
  • Page 34 Section 7: Layouts Installation, Operation and Maintenance Manual April 2024 MAN 623 Rev. 5 Table 8. Parts List Item Quantity Description Material Housing Nodular cast iron Rack Alloy steel Pinion Alloy steel Cover Carbon steel Screw Alloy steel Bushing Fe + Bz + PTFE Cylinder tube Nickel-plated carbon steel Piston...

  • Page 35: Date Report For Maintenance Operations

    Installation, Operation and Maintenance Manual Section 8: Maintenance Operations MAN 623 Rev. 5 April 2024 Section 8: Date Report for Maintenance Operations Last maintenance operation date: (in factory, on delivery): ……… exec. by : ………… ……… exec. by : ………… ………...
  • Page 36 VCIOM-03747-EN © 2024 Biffi. All rights reserved. Biffi Italia s.r.l. Strada Biffi 165 The contents of this publication are presented for informational purposes 29017 Fiorenzuola d’Arda (PC) only, and while every effort has been made to ensure their accuracy, Italy...

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