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HLA

– Double acting- hydraulic linear actuator

Use and maintenance manual

© Copyright by BIFFI Italia. All right reserved.

Pag. 36

Contents may change without notice

7.2 PARTS-LIST FOR MAINTENANCE AND REPLACING

PROCEDURE

Table 1: Pedestal with coupling joint

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Summary of Contents for HLA Series

Page 1: ...ce manual HLA DOUBLE ACTING HYDRAULIC LINEAR ACTUATOR 4 18 02 19 Updated data plate Sassi Orefici Vigliano 3 18 04 16 Updated applicable regulation chapter 1 1 1 Ermanni Orefici Vigliano 2 31 07 12 General update Ermanni Stoto Vigliano 1 25 06 10 General update Ermanni Stoto Vigliano 0 05 05 99 Document release Lazzarini Aliani Ziveri Rev Date Description Prepared Checked Approved ...

Page 2: ...rical connections if any 13 2 7 commissioning 14 3 Operation and use 15 3 1 operation description 15 3 2 residual risks 16 3 3 operations examples 16 3 4 calibration of the linear stroke 19 3 5 calibration of microswitches if foreseen 21 3 6 calibration of the operation time 23 4 Operational tests and inspections 24 5 Maintenance 25 5 1 periodic maintenance 25 5 1 1Check and restore oil level in t...

Page 3: ...pays the highest attention to collecting and verifying the documentation contained in this user 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 and may be modified without prior notice All rights reserved ...

Page 4: ...nd 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 The warranty can last either one year from the date of installation by the initial user of the product or eighteen mon...

Page 5: ...ion of linear valves wedge gate valves through conduit gate valves for ON OFF and modulating heavy duty service The actuator is made up of an hydraulic cylinder and a mounting pedestal complete with a joint for the coupling to the valve stem of actuator output stem The valve is actuated in opening and in closing position by the actuator hydraulic cylinder that is pressurized in one or in the other...

Page 6: ...ontents may change without notice BIFFI can supply different types of control system following Customer s requirements The expected lifetime of actuator is approximately 25 years Figure 2 Identification of actuator parts Hydraulic cylinder Valve coupling Manual Hand Pump MHP optional Valve position indicator Lifting eyelets ...

Page 7: ...with the valve its settings have already been made at the factory 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 2 2 ACTUATOR HANDLING The lifting and handling should be made by qualified staff and in compliance with the laws and provisions in force The fas...

Page 8: ...a All right reserved Pag 8 Contents may change without notice 1 Lifting points obligatory Picture 2 Positioning by chains Positioning by slings 1 point of support 2 don t lay the actuator on tie rods of cylinder 3 don t lay the actuator on accessories manual hand pump hydraulic control system etc ...

Page 9: ...sc the valve coupling area Periodically operate the actuator Sect 3 3 2 4 ACTUATOR ASSEMBLY ON THE VALVE 2 4 1 Types of assembly The adapter pedestal in fabricated carbon steel is specifically designed for adaptation to any type of valve with provision for local indicator limit switches and other accessories on request Lift the actuator by safety hook for chains using the lifting points see sect 2...

Page 10: ...NTO THE VALVE BY BRACKET WITH THREADED JOINT PROCEED AS FOLLOWS 1 Check that the coupling dimensions of the valve flange and stem or of the relevant extension meet the actuator coupling dimensions valve stem and flange Lubricate the valve stem with grease in order to make the assembly easier 2 Connect a sling to the support point of the actuator and lift it To make easier the assembly the valve st...

Page 11: ...nd tighten up the valve flange is in contact with the actuator flange 4 Tighten the nuts of the connecting stud bolts evenly with the torque prescribed in the table The stud bolts must be made of ASTM A320 L7 steel the nuts must be made of ASTM A194 grade 2 steel as minimum B To assemble the actuator onto the valve by bracket with shell joint perform the following operations 1 Check that the coupl...

Page 12: ...connection between valve stem and actuator cylinder rod 6 Screw the valve stem joint item 7 on valve stem up to reach the proper position which allow the reassembly of the two halves of shell joint item 8 tighten the joint fastening screws item 4 7 Screw the stud bolts item 1 into the actuator pedestal flange and screw the nuts on the stud bolts 8 Tighten according to the nut item 2 size torque re...

Page 13: ...sending through them plenty of the supply fluid used in the system Mould and fasten the connection pipes so that no irregular strains at entries or loosening of threaded connections occur Make the connections according to the operating diagram Check the absence of leakages from hydraulic connections If necessary tighten the nuts of the pipe fittings 2 6 ELECTRICAL CONNECTIONS IF ANY Use components...

Page 14: ...ocumentation supplied Check that the feed voltage values of the electric components solenoid valve coils micro switches pressure switches etc are compatible with those reported on the identification plate of the actuator Figure 1 Check that the setting of the components of the actuator control unit pressure regulator pressure switches flow control valves etc meet the plant requirements Carry out a...

Page 15: ...der 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 motion of the valve stem that is coupled For local or remote operations please refer to technical documentation furnished with actuators The power and control systems are supplied on specific customer demand For all the relevant informati...

Page 16: ...chematic in supplied documentation The HLA actuators can have an emergency manual override in addition to the local and or remote control system which controls the oil supplied by a power pack for the normal actuator operation The emergency manual override mounted on the actuator consists of an hydraulic manual override and a hydraulic manual selector to choose the actuator Normal operation with o...

Page 17: ...HLA Double acting hydraulic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 17 Contents may change without notice 3 3 2 Remote control operations ...

Page 18: ...HLA Double acting hydraulic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 18 Contents may change without notice ...

Page 19: ...tem to actuator joint for the downward position Picture 5 Mechanical stop For the adjustment of the mechanical stop on the end flange of cylinder follow these steps Figure 6 Remove with the specific wrench c1 the plug t Insert a wrench for Allen keys c2 in the through hole until reaching the adjustment pin g Keep the protection cover blocked with the special wrench c3 If the actuator angular strok...

Page 20: ... Mechanical stop of the cylinder For high pressure cylinder models the mechanical stop is internal without protection cover proceed at the same way 1 remove the plug and 2 operate the adjusting screw HYDRAULIC CYLINDER SIZE WRENCH C1 mm WRENCH C2 mm WRENCH C3 mm 075 22 10 36 100 22 10 36 135 22 10 36 175 22 14 46 200 27 14 46 235 27 17 65 280 27 17 65 300 36 17 110 ...

Page 21: ...tive wiring diagram and follow these steps Unscrew the fastening screws of the cover Picture 7 Remove the cover paying attention not to deteriorate the gasket and the cylindrical and flat coupling surfaces Operate the actuator in opening or closing with local hydraulic operation Section 3 3 Unscrew the screw of the operating cam relative to the micro switch to calibrate and adjust it according to ...

Page 22: ...he valve but is turned by 90 Remove the roll pin placed on the position indicator index Turn the indicator until reaching its proper positioning Put the roll pin back in its position End of stroke microswitches should be operated before the stop of the stroke of the actuator due to mechanical stops Adjust the relative cams properly pin Picture 9 Position indicator and pin for micro switches box Po...

Page 23: ...to technical data sheet included in technical documentation If necessary it s possible to modify or reset the operating time through two flow regulating valves optional placed on inlets of hydraulic cylinder refer to specific technical documentation furnished with actuators scope of supply Picture 10 Adjustment of operating time by flow regulator valve please refer to specific operating diagram it...

Page 24: ...IFFI Italia All right reserved Pag 24 Contents may change without notice 4 Operational tests and inspections Important 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: ...very 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 infrequent carry out a few opening and closing operations with all the existing controls remote control local control emergency controls etc if this is allowed by the conditions of the plant Check there are no hydraulic ...

Page 26: ...e tank 4 is in correspondence of the MAX LEVEL notch of the dipstick 4 By leaving the dipstick unscrewed move the actuator by the pneumatic control or by the hand pump to closed position 5 Screw and tighten the dipstick If necessary substitute or added the oil proceeding as follow Remove the dipstick 1 from the tank cover 22 Unscrew the plug 27 and the washer 9 to drain all the oil If some dirt or...

Page 27: ...features of hydraulic oil suggested by BIFFI Italia S r l for refilling in different working condition Standard temperature conditions 30 C 85 Producer AGIP Name ARNICA 22 Viscosity at 40 C 20 9 mm s Viscosity at 100 C 4 73 mm s Viscosity index ASTM 153 Flash point 192 C Pour point 42 C Specific weight at 15 C 0 857 Kg l Equivalent oils SHELL TELLUS PLUS 22 CHEVRON HYDRAULIC OIL AW ISO 22 MOBIL DT...

Page 28: ...of need extraordinary maintenance can be performed on the parts of the actuator Anyway contact BIFFI ITALIA customer care 5 2 1 Lubrication of mechanism For normal duty the HLA actuator is lubricated for life In case of high load and high and high frequency of operation it may be necessary to periodically restore the lubrication it is advisable to apply a generous coating of grease on the contact ...

Page 29: ...opping point 260 C ASTM D 566 Product code 001A0065 Infosafe No ACISO GB eng C 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 follow general sectional drawing and adopting the following procedures 5 2 2 Replacement of cylinder...

Page 30: ... If the O ring must be replaced remove the existing one from its groove clean the groove carefully and lubricate it with a protective oil or grease film Assemble the new O ring into its groove and lubricate it with a protective oil or grease film 1 Replace the O ring 16 of the head flange 5 2 Replace the back up ring 19 of the end flange 6 3 Replace the scraper 23 into the flange 22 placed under t...

Page 31: ...damage the O ring 16 Carefully clean the threaded end of the piston rod 3 and the threaded hole of the adaptor Spread some sealant LOCTITE 452 or equivalent on the rod threaded end and tighten 3 Carefully clean the inside of the tube 7 and check that the entire surface particular that of the bevels is not damaged Lubricate with a protective oil or grease film the tube internal surface and the beve...

Page 32: ...ble acting hydraulic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 32 Contents may change without notice DOUBLE ACTING HYDRAULIC LINEAR ACTUATOR SECTIONAL DRAWING ...

Page 33: ...linder of the actuator from the control unit and from the accumulator tank if present If actuator is still mounted onto the valve loosen the threaded connections between valve and actuator screws tie rods nuts Lift the actuator using the proper lifting points see chapter 2 2 If the actuator needs storage before demolition see chapter 2 3 The demolition of the actuator both concerning any electrica...

Page 34: ...ibration of flow regulator valves Restore Sect 3 6 Wear of the valve Replace Actuator too fast High supply pressure Restore Sect 1 4 Wrong calibration of flow regulator valves Restore Sect 3 6 Leakages on hydraulic or pneumatic circuits Deterioration and or damage to gaskets Call BIFFI Italia S r l Customer Service Incorrect position of the valve Wrong adjustment of mechanical stops Restore Sect 3...

Page 35: ...nce 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 Please send every spare parts request to BIFFI ITALIA s r l Servizio Assistenza Tecnica Clienti Tel 0523 944523__________ Fax 0523 941885__ e mail spareservice biffi it________ please specify 1 actuator model 2 BIFFI acknowledgement 3 spare ...

Page 36: ...lic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 36 Contents may change without notice 7 2 PARTS LIST FOR MAINTENANCE AND REPLACING PROCEDURE Table 1 Pedestal with coupling joint ...

Page 37: ...HLA Double acting hydraulic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 37 Contents may change without notice Table 2 hydraulic cylinder ...

Page 38: ...HLA Double acting hydraulic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 38 Contents may change without notice Table 3 Hydraulic control unit MHP ...

Page 39: ...HLA Double acting hydraulic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 39 Contents may change without notice ...

Page 40: ...HLA Double acting hydraulic linear actuator Use and maintenance manual Copyright by BIFFI Italia All right reserved Pag 40 Contents may change without notice ...

Page 41: ... Italia All right reserved Pag 41 Contents may change without notice 8 Date report for maintenance operations Last maintenance operation date in factory on delivery exec by exec by exec by Next maintenance operation date exec by exec by exec by Start up date in factory on delivery on plant ...

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