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BIFFI RP14 Use And Maintenance Manual

Spring return pneumatic actuator
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RPS – Spring return pneumatic actuator
Use and maintenance manual
RPS
SPRING RETURN
PNEUMATIC ACTUATOR
MAN 573-C
Use and maintenance manual
Ermanni
Orefici
Vigliano
0
10/07/19
Issue document
Rev.
Date
Description
Prepared
Checked
Approved
© Copyright by BIFFI Italia. All right reserved.
Pag. 1
Contents may change without notice

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Summary of Contents for BIFFI RP14

  • Page 1 Use and maintenance manual SPRING RETURN PNEUMATIC ACTUATOR MAN 573-C Use and maintenance manual Ermanni Orefici Vigliano 10/07/19 Issue document Rev. Date Description Prepared Checked Approved © Copyright by BIFFI Italia. All right reserved. Pag. 1 Contents may change without notice...

  • Page 2: Table Of Contents

    7 Layouts ................38 7.1 Spare parts order ..............38 7.2 parts-list for maintenance and replacing procedure ....39 8 Date report for maintenance operations ........41 © Copyright by BIFFI Italia. All right reserved. Pag. 2 Contents may change without notice...
  • Page 3 The information contained is of exclusive reserved ownership of BIFFI Italia S.r.l and may be modified without prior notice. All rights reserved. © Copyright by BIFFI Italia. All right reserved.

  • Page 4: General Warnings

    2014/34/EU: Directive and safety instructions for use in hazardous area 1.1.2 Terms and conditions Biffi Italia srl 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 5: Identification Plate

    The rack is nitride for ensure the minimal friction. The spring module incorporates one or two springs in series, depending on the model, and is fully encapsulated. This assures © Copyright by BIFFI Italia. All right reserved. Pag. 5 Contents may change without notice...
  • Page 6 The mounting flange, on the housing top, can be utilised for the assembly of limit switches, position transmitter, positioner etc., which are actuated by the actuator output shaft. © Copyright by BIFFI Italia. All right reserved. Pag. 6 Contents may change without notice...
  • Page 7 The actuator housing is provided, on the front face and in the back face (optional), with threaded holes for the assembly of accessories (control panels, air storage tank, etc.). © Copyright by BIFFI Italia. All right reserved. Pag. 7 Contents may change without notice...
  • Page 8 RPS – Spring return pneumatic actuator Use and maintenance manual The expected lifetime of actuator is approximately 25 years . © Copyright by BIFFI Italia. All right reserved. Pag. 8 Contents may change without notice...

  • Page 9: Data Sheet

    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 (Sect. 3.4) and of micro-switches (if any) (Sect. 3.5). © Copyright by BIFFI Italia. All right reserved. Pag. 9 Contents may change without notice...

  • Page 10: Actuator Handling

    Valve stem with horizontal axis : The actuator can also be lifted to assemble directly onto the valve with stem with horizontal axis. To make easier this operations, BIFFI suggest to move the lifting eyelet from its standard position, and place it in this suggested position: ©...
  • Page 11 RPS – Spring return pneumatic actuator Use and maintenance manual © Copyright by BIFFI Italia. All right reserved. Pag. 11 Contents may change without notice...
  • Page 12 RPS – Spring return pneumatic actuator Use and maintenance manual © Copyright by BIFFI Italia. All right reserved. Pag. 12 Contents may change without notice...

  • Page 13: Storage

    1 = POINTS OF SUPPORT 2 = DON’T LAY THE ACTUATOR ON TIE-RODS DON’T LAY THE ACTUATOR ON ACCESSORIES (manual hand- pump, manual jack-screw, pneumatic control system etc.) © Copyright by BIFFI Italia. All right reserved. Pag. 13 Contents may change without notice...

  • Page 14: Actuator Assembly On The Valve

    2.4.1 Types of assembly For coupling to the valve, the housing is provided with a flange with threaded holes according to Biffi standard tables (TN1182 attached). The number, dimensions and diameter of the holes are made in accordance with ISO 5211.The actuator is provided with a spool piece and a stem extension for coupling to the valve.
  • Page 15 RPS – Spring return pneumatic actuator Use and maintenance manual © Copyright by BIFFI Italia. All right reserved. Pag. 15 Contents may change without notice...

  • Page 16: Assembly Procedure

    (Sect. 3.4). Fasten threaded connections. Please refer to Table 1. ❑ Table 1: nuts tightening torque Tightening Threading torque (Nm) © Copyright by BIFFI Italia. All right reserved. Pag. 16 Contents may change without notice...

  • Page 17: Pneumatic Connections

    (when applicable). Insert the connection cables into the electrical enclosures through the cable glands, and connect the cable wires to © Copyright by BIFFI Italia. All right reserved. Pag. 17 Contents may change without notice...

  • Page 18: Commissioning

    Remove all rust and, in accordance with the applicable painting ❑ specifications, repair paint-coat that has been damaged during transport, storage or assembly. © Copyright by BIFFI Italia. All right reserved. Pag. 18 Contents may change without notice...

  • Page 19: Operation And Use

    The control valve can have many types of actuating devices (solenoid, manual control, pneumatic pilot, spring, etc.) Spring return control valves allow “fail safe” operation. © Copyright by BIFFI Italia. All right reserved. Pag. 19 Contents may change without notice...
  • Page 20 The positioner has a mechanical linkage to the actuator, for a feedback of the valve position. © Copyright by BIFFI Italia. All right reserved. Pag. 20 Contents may change without notice...

  • Page 21: Residual Risks

    3.3 OPERATIONS The operations are carried out sending the proper signal through the control system in compliance with Customer specifications. Please refer to applicable “operating diagram” and to BIFFI technical documentation supplied. © Copyright by BIFFI Italia. All right reserved.

  • Page 22: Calibration Of The Angular Stroke

    5) Tighten the protection for setting-screws (2) (refer to torque table to avoid accidental unscrewing of the lock-nut) ACTUATOR THREAD Wrench C2 TORQUE MODEL (mm) (Nm) RP14/15 M30X2 RP30 M40X2 RP60 M45X2 RP120 M50X2 © Copyright by BIFFI Italia. All right reserved. Pag. 22 Contents may change without notice...
  • Page 23 WRENCH C1 MODEL (mm) (mm) Plug+FKM gasket RP14/15 12 (plug 3/4”GJ) 17 (plug 1” GJ) RP30 12 (plug 3/4”GJ) RP60 17 (plug 1” GJ) RP120 © Copyright by BIFFI Italia. All right reserved. Pag. 23 Contents may change without notice...

  • Page 24: Calibration Of Microswitches

    Check that the cover and the index show the proper position of ❑ the valve (Picture 11). Tighten the screws. ❑ Picture 9 – Micro-switches Picture 10 – Cam adjustment © Copyright by BIFFI Italia. All right reserved. Pag. 24 Contents may change without notice...
  • Page 25 Adjust the relative cams properly. Position indicator (index) Picture 11 – Position indicator and pin for micro-switches box © Copyright by BIFFI Italia. All right reserved. Pag. 25 Contents may change without notice...

  • Page 26: Calibration Of The Operation Time

    RPS – Spring return pneumatic actuator Use and maintenance manual 3.6 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 it’s possible to modify or reset the operating time through the flow regulator valve placed on inlet of pneumatic supply (Picture 12).

  • Page 27: Operational Tests And Inspections

    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 © Copyright by BIFFI Italia. All right reserved. Pag. 27 Contents may change without notice...

  • Page 28: Maintenance

    If the filter is made of cellulose, it must be replaced when clogged. © Copyright by BIFFI Italia. All right reserved. Pag. 28 Contents may change without notice...

  • Page 29: Extraordinary Maintenance

    ( AGIP-ENI LCX 2/32 if seals are in NBR/Viton or Neoprene rubber, or with Aeroshell Grease 7 if the seals are in Fluorosilicon rubber). If the O-ring © Copyright by BIFFI Italia. All right reserved. Pag. 29 Contents may change without notice...
  • Page 30 2) Disassemble the shoulder washer (8). Remove the existing O- Ring (23) from its groove. Clean the groove and the shaft carefully and lubricate it with protective oil film. © Copyright by BIFFI Italia. All right reserved. Pag. 30 Contents may change without notice...
  • Page 31 5) Check that the sealing washer (18) and the washer (27) are in contact with the housing surface. Tighten the lock nut (26). © Copyright by BIFFI Italia. All right reserved. Pag. 31 Contents may change without notice...
  • Page 32 RPS – Spring return pneumatic actuator Use and maintenance manual © Copyright by BIFFI Italia. All right reserved. Pag. 32 Contents may change without notice...
  • Page 33 AFTER MAINTENANCE OPERATIONS CARRY OUT A FEW ACTUATOR OPERATIONS TO CHECK THAT ITS MOVEMENT IS REGULAR AND THAT THERE IS NO AIR LEAKAGE THROUGH THE SEALS. © Copyright by BIFFI Italia. All right reserved. Pag. 33 Contents may change without notice...

  • Page 34: Lubrication Of Mechanism

    2) Substitute the gaskets and the O-Rings if worn or damaged. 3) Assemble all the components, taking care not to damage the seals. The following grease is used by BIFFI for standard working temperature and suggested for re-lubrication: © Copyright by BIFFI Italia. All right reserved.
  • Page 35 SHELL ALVANIA GREASE R2 Infosafe No.: ACISO GB/eng/C ARAL ARALUB HL2 CHEVRON DURALITH GREASE EP2 CHEVRON SPHEEROL AP2 TEXACO MULTIFAK EP2 MOBILPLEX 47 PETROMIN GREASE EP2 © Copyright by BIFFI Italia. All right reserved. Pag. 35 Contents may change without notice...

  • Page 36: Dismantling And Demolition

    (ex. metallic, and plastic materials, fluids etc.) and send them to differentiated waste collection sites, as provided for by the laws and provisions in force. © Copyright by BIFFI Italia. All right reserved. Pag. 36 Contents may change without notice...

  • Page 37: Troubleshooting

    See follow figure actuator or lower unscrewing of thrust torque value bearing-screw Restore the correct position of thrust bearing-screw (please refer to fig.1 chapter 5.2.1: © Copyright by BIFFI Italia. All right reserved. Pag. 37 Contents may change without notice...

  • Page 38: Layouts

    Tighten the lock nut (26). 7 Layouts 7.1 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 (Sect. 1.2) for any specific spare part for a specific actuator model.

  • Page 39: Parts-List For Maintenance And Replacing Procedure

    RPS – Spring return pneumatic actuator Use and maintenance manual 7.2 PARTS-LIST FOR MAINTENANCE AND REPLACING PROCEDURE Table 1: Rack and pinion mechanism © Copyright by BIFFI Italia. All right reserved. Pag. 39 Contents may change without notice...
  • Page 40 RPS – Spring return pneumatic actuator Use and maintenance manual © Copyright by BIFFI Italia. All right reserved. Pag. 40 Contents may change without notice...

  • Page 41: Date Report For Maintenance Operations

    Next maintenance operation date: ……… exec. by : ………… ……… exec. by : ………… Start-up date : ( in factory, on delivery ).……………………. .……………………. ( on plant ) © Copyright by BIFFI Italia. All right reserved. Pag. 41 Contents may change without notice...

This manual is also suitable for:

Rp15Rp30Rp60Rp120RpsRp 14

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