BIFFI RPD 120 Installation, Operation And Maintenance Manual Download Page 35

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Installation, Operation and Maintenance Manual

MAN 575 Rev. 4

July 2020

Layouts

Section 7: Layouts

Figure 18

Double-Acting Pneumatic Actuator with Manual Jackscrew

Table 10.

Parts list

Item

Qty

Description

Material

Housing

Nodular cast iron

Pinion

Nodular cast iron

Piston

Carbon steel

End flange

Carbon steel

Rack

Nodular cast iron

Shaft

Nickel plated carbon steel

Cylinder gasket

*NBR rubber

Shoulder washer

*Nylon

Nut

Carbon steel

Cylinder tube

Nickel plated carbon steel

Tie rod

Alloy steel

Thrust bearing screw

Alloy steel

Sealing washer

*PVC

Sealing washer

*PVC

Sliding block

Bronze

Piston guide sliding ring

* graphite

Retainer ring

*Stainless steel

Screw

Alloy steel

O-ring

*NBR rubber

O-ring

*NBR rubber

Nut

Carbon steel

Nut

Carbon steel

Washer

Carbon steel

Washer

Carbon steel

Screw

Alloy steel

Stop setting screw

Bronze

Manual override jackscrew

Stainless steel

O-ring

*NBR rubber

Lifting eyelet

Carbon steel

NOTE:

* Recommended spare parts

Summary of Contents for RPD 120

Page 1: ...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 Biffi RPD...

Page 2: ...4 July 2020 General update Migration to new template 3 April 2016 Updated applicable regulation chapter 1 1 1 Ermanni Orefici Vigliano 2 October 2014 Updated chapters 1 1 2 and 5 4 Ermanni Cristalli...

Page 3: ...4 Section 2 Installation 2 1 Checks Upon Actuator Receipt 5 2 2 Actuator Handling 5 2 3 Storage 6 2 4 Actuator Assembly on the Valve 7 2 4 1 Types of Assembly 7 2 4 2 Assembly Procedure 9 2 5 Pneumat...

Page 4: ...Periodic Maintenance 21 5 2 Extraordinary Maintenance 22 5 2 1 Replacement of Cylinder Seals 22 5 3 Lubrication of Mechanism 26 5 4 Dismantling and Demolition 27 Section 6 Troubleshooting 6 1 Failure...

Page 5: ...ples Part 2 Technical principles and specification 2006 42 EC Machine directive 97 23 EC Directive for pressure PED equipment until 18 July 2016 2014 68 EU from 19 July 2016 2006 95 EC Directive for l...

Page 6: ...nditions 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...

Page 7: ...rack is nitride for ensures the minimal friction External travel stops allow precise angular stroke adjustment between 80 and 100 Totally enclosed weatherproof housing made of nodular cast iron for m...

Page 8: ...the assembly of accessories control panels air storage tank etc The expected lifetime of actuator is approximately 25 years Figure 2 Supply fluid Air Nitrogen or sweet gas Operating temperature Stand...

Page 9: ...1 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 see Secti...

Page 10: ...of valve coupling Make sure that plastic plugs are present on the hydraulic and electrical connections if present Check that the protection of the control system and of the limit switch box if any are...

Page 11: ...tandard 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...

Page 12: ...ble 2 NOTE All dimensions are in mm Both the actuator flanges can be used for the coupling to the valve or the mounting of ancillary equipments positioner limit switch box etc View from X View from Y...

Page 13: ...e stem with oil or grease Properly clean and remove grease from valve coupling flange surfaces Connect if supplied separately the stem extension onto the valve stem and fasten it with the special fast...

Page 14: ...6 Electrical Connections If Any WARNING The connections should be made by qualified staff Before carrying out any operation cut line power off Safety provisions as per CEI 64 8 regulation should be c...

Page 15: ...the air supply filtering degree dehydration are as prescribed Check that the feed voltage values of the electrical components solenoid valve coils micro switches pressure switches etc are as prescrib...

Page 16: ...rts the linear motion of the piston and the consequent rotation motion of the rack and pinion mechanism to which the valve stem is coupled in required direction For local or remote operations related...

Page 17: ...ard configuration operating the screw mounted in the cylinder end flange results in valve opening while operating the screw mounted in the housing side wall results in the valve closing To achieve a r...

Page 18: ...ing return control valves allow fail safe operation Figure 9 ON OFF service Air Fail Safe System This system allows fail safe operation when the pressure in the gas supply line drops below a set value...

Page 19: ...back of the valve position Figure 11 electropneumatic positioner pneumatic positioner pneumatic control signal electric control signnal pressurized air supply reduced pressure air opening chamber redu...

Page 20: ...e cylinder end flange for spring to close actuators or in the housing wall for spring to open actuators For the adjustment of the travel stop screws proceed as follows please refer to Figures 12 and 1...

Page 21: ...3 Operation and Use Figure 12 Table 5 Without Jackscrew Manual Override Figure 13 Actuator Model Wrench C1 mm Wrench C2 mm RPD 15 17 41 RPD 30 17 50 RPD 60 17 55 RPD 120 17 60 Table 6 With Jackscrew...

Page 22: ...lled switch box model NOTICE For mounting interface dimension of the Limit Switch box on the cover of the actuator please refer to TN1163V for metric dimension or TN1163VU for imperial dimension NOTIC...

Page 23: ...and to technical data sheet included in technical documentation If necessary and required from Customer it should be possible to modify or reset the operating time through flow regulator valves that...

Page 24: ...erational Tests and Inspections Operational Tests and Inspections Section 4 Operational Tests and Inspections NOTICE To ensure the guaranteed SIL grade according to IEC 61508 the functionality of actu...

Page 25: ...and needs Anyway every 2 years of operation the following is recommended Check that the actuator operates the valve correctly and with the required operating times If the actuator operation is very in...

Page 26: ...to easily restore the setting of the actuator mechanical stop once the maintenance procedures have been completed 2 Loosen the lock nut 10 and unscrew the stop screw 30 together with the nut 10 the wa...

Page 27: ...not damaged Lubricate the inside surface of the tube and the bevels at the ends Slide the cylinder tube onto the piston taking care not to damage the piston O ring 24 3 Assemble the end flange 4 centr...

Page 28: ...the lock nut 26 and remove the screw 15 together with the sliding block 19 the nut 26 the washer 27 and the sealing washer 18 Remove the sealing washer 18 from the screw 15 Carefully clean and lubrica...

Page 29: ...1 Housing 2 Pinion 3 Piston 4 End flange 5 Rack 6 Shaft 7 Cylinder gasket 8 Shoulder washer 10 Nut 13 Cylinder tube 14 Tie rod 15 Thrust bearing screw 17 Sealing washer 18 Sealing washer 19 Sliding bl...

Page 30: ...ed 4 Remove the nuts 25 from the tie rod 14 at the end flange side they must be gradually unscrewed all at the same time so as to release the thrust of the spring against the flange 5 Slide off the en...

Page 31: ...ard range consult Biffi 5 4 Dismantling and Demolition WARNING Before disassembling the actuator it is necessary to close the pneumatic feed line and discharge pressure from the cylinder of the actuat...

Page 32: ...re Restore Section 1 4 Wrong calibration of flow regulator valves Restore Section 3 6 Leakages on hydraulic circuits Deterioration and or damage to gaskets Call Biffi Italia s r l Customer Service Inc...

Page 33: ...rmation concerning all the supply and serial number of the actuator refer to Section 1 2 for any specific spare part for a specific actuator model Please send every spare parts request to Biffi Italia...

Page 34: ...asket NBR rubber 8 2 Shoulder washer Nylon 10 2 Nut Carbon steel 13 1 Cylinder tube Nickel plated carbon steel 14 4 Tie rod Alloy steel 15 1 Thrust bearing screw Alloy steel 17 2 Seal washer PVC 18 1...

Page 35: ...ylon 10 2 Nut Carbon steel 13 1 Cylinder tube Nickel plated carbon steel 14 4 Tie rod Alloy steel 15 1 Thrust bearing screw Alloy steel 17 2 Sealing washer PVC 18 1 Sealing washer PVC 19 1 Sliding blo...

Page 36: ...le Manual Override Table 11 Parts list Item Qty Description Material 1 1 External body Carbon steel 2 1 Internal body Carbon steel 3 1 Scrape ring Rubber 4 2 Flap Carbon steel 5 1 Screw Stainless stee...

Page 37: ...for Maintenance Operations Date Report for Maintenance Operations Section 8 Date Report for Maintenance Operations Last maintenance operation date in factory on delivery exec by exec by exec by Next m...

Page 38: ...he products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available on request We reserve the right to modify or improve the d...

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