BIFFI RPS Installation, Operation And Maintenance Manual

BIFFI RPS Installation, Operation And Maintenance Manual

Spring return pneumatic actuator

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RPS SPRING RETURN PNEUMATIC ACTUATOR
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Before installation these instructions must be fully read and understood

TABLE OF CONTENTS

1. General warnings .......................................... 1
2. Installation ..................................................... 4
3. Operation and use ......................................... 8
5. Maintenance. ............................................... 11
6. Troubleshooting .......................................... 16
7. Layouts ......................................................... 16

1 GENERAL WARNINGS

IMPORTANT
The manual is an integral part of the machine. It
should be read carefully before carrying out any
operation and should be kept for future reference.
1.1 Generalities
Biffi actuators are conceived, manufactured
and controlled according to the Quality Control
System in compliance with EN ISO 9001
international regulation.
Emerson.com/FinalControl
1.1.1 Applicable regulation
EN ISO 12100-1: 2005: Safety of machinery -
Basic notions, general design principles.
Part 1 - Basic terminology, method.
EN ISO 12100-2: 2005: Safety of machinery -
Basic notions, general design principles.
Part 2 - Technical principles and specification.
2006/42/EC: Machine directive.
97/23/EC:
Directive for pressure equipment
(PED).
2006/95/EC: Directive for low voltage
equipment.
2004/108/EC: Directive for the electromagnetic
compatibility.
94/9/EC:
Directive and safety instructions
for use in hazardous area.
1.1.2 Terms and conditions
Biffi 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.
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 first. All detailed warranty
conditions are specified 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 modified 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.
© 2017 Emerson. All rights reserved.
VCIOM-03749-EN 17/12

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Summary of Contents for BIFFI RPS

  • Page 1: Table Of Contents

    2. Installation ............. 4 3. Operation and use ......... 8 1.1.2 Terms and conditions 4. Operational tests and inspections....11 Biffi guarantees that all the items produced 5. Maintenance..........11 are free of defects in workmanship and 6. Troubleshooting .......... 16 manufacturing materials and meet relevant 7.
  • Page 2 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL FIGURE 1 Actuator manual emergency operation in Data plate opposition to the spring action, is performed by rotating the jackscrew by a wrench or by a handwheel (available on request).
  • Page 3 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL FIGURE 2 Front side ØE №4 threaded holes Top view Back side (The holes on the back side are optional) ØE №4 threaded holes DIMENSIONS (mm) Actuator model A ± 0.2 B ±...
  • Page 4: Installation

    A. Valve stem with horizontal axis The actuator can also be lifted to assemble directly onto the valve with stem with horizontal axis. To make this operation easier, Biffi suggest to move the lifting eyelet from its standard position, and place it in the suggested position, see figure 4.
  • Page 5: Figure 4

    RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL FRONT VIEW SIDE VIEW Lifting eyelets suitable for vertical stem valve mounting position (standard) Lifting eyelets (standard position) TOP VIEW BACK SIDE VIEW Lifting point to balance weight (suitable for slings)
  • Page 6: Øe

    To fix the actuator to the valve flange must be Threaded hole ØN used the stud bolts and nuts supplied by Biffi! In case the actuator is supplied without stud bolts and nuts the following materials must be used as...
  • Page 7: M10

    RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL 2.7 Commissioning 2.4.2 Assembly procedure not cause excessive stress to the inlets of the actuator. The piping must be suitably IMPORTANT WARNING fastened so as not to cause excessive stress...
  • Page 8: Operation And Use

    RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL 3 OPERATION AND USE Manual override for RPS spring return FIGURE 7 pneumatic actuator 3.1 Operation description Actuator manual emergency operation in The air pressurizes the cylinder chamber and opposition to the spring action, is performed...
  • Page 9 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL On-Off service: three way control valve FIGURE 8A The diagram shows the simplest On-Off control. The control valve (2) has two positions. In one position the gas supply pressure is connected to the cylinder chamber, and the actuator performs the “pneumatic”...
  • Page 10 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL 3.2 Residual risks Wrench C2 Torque Actuator model Thread (mm) (Nm) WARNING RP 14/15 M30x2 The actuator has parts under pressure. Use the RP 30 M40x2 due caution. RP 60...
  • Page 11: Operational Tests And Inspections

    5.1 Periodic maintenance • Check there are no pneumatic leakages If RPS actuators are designed to operate long- necessary tighten the nuts of the pipe-fittings. • Check the integrity of worn out parts (gaskets, term in heavy-duty operating conditions, without maintenance needs.
  • Page 12 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL 5.2 Extraordinary maintenance 4. Carefully clean the ends of the cylinder tube (13) and of the spacer tube (33), which If there are leaks in the pneumatic cylinder or a...
  • Page 13 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL Replacement of mechanism seals If the sealing washer (18) has to be replaced, To replace the O-rings of the shaft (6) proceed measure the protrusion of the thrust bearing as follows:...
  • Page 14 Plug Cylinder gasket Piston guide sliding ring Spacer tube Shoulder washer Stop setting screw Retainer ring Manual override jack screw Screw Spring retainer disk O-ring O-ring Rack spacer rod * applicable to RPS with handwheel manual override O-ring Cylinder tube...
  • Page 15 The demolition of the actuator both concerning not to damage the seals. any electrical and mechanical parts should be The following grease is used by Biffi for made by specialized staff. standard working temperature and suggested for re-lubrication (see table).
  • Page 16: Troubleshooting

    Please send every spare-parts request to: Biffi Italia S.r.l. 7.1 Spare parts order Servizio Assistenza Tecnica Clienti For spare parts order to the relevant Biffi E-mail: spareservice biffi.it office please make reference to Biffi order confirmation concerning all the supply, and Please specify: serial number of the actuator (section 1.2) for...
  • Page 17 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL 7.2 Parts list for maintenance and replacing procedure FIGURE 22 Rack and pinion mechanism RPS S2-A1/B1/C1 single acting pneumatic actuator...
  • Page 18 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL PARTS LIST - RPS S2-A1/B1/C1 Item Description Material Housing Nodular cast iron Pinion Nodular cast iron Piston Carbon steel End flange Carbon steel Rack Nodular cast iron Shaft Alloy steel...
  • Page 19 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL FIGURE 23 RPS 2.4 / RPS 3.1 single acting pneumatic actuator...
  • Page 20 RPS SPRING RETURN PNEUMATIC ACTUATOR INSTALLATION, OPERATION AND MAINTENANCE MANUAL PARTS LIST - RPS 2.4 / RPS 3.1 Item Description Material Housing Nodular cast iron Pinion Nodular cast iron Piston Carbon steel End flange Carbon steel Rack Nodular cast iron...
  • Page 21: Date Report For Maintenance Operations

    (in factory, on delivery): .……………………....(on plant): …........Biffi reserves the right to change product designs and specifications without notice. Biffi Italia S.r.L. Località Caselle San Pietro, 420, 29017 Fiorenzuola d'Arda (PC) ITALY Ph: +39 (0)523 944 411 E-mail: biffi_italia@biffi.it www.biffi.it...

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