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_____________________________________________________________________________________

STI S.r.l.

– Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com

Manual 5400, rev. 05 02/2018

– RTQHS

INDEX

GENERAL INFORMATION ............................................................................................................................. 1

1.1

ENERAL

ARNINGS

.................................................................................................................................. 1

1.2

ENERALITIES

........................................................................................................................................... 1

1.3

ANUFACTURER

........................................................................................................................................ 1

1.4

ERMS AND CONDITIONS

............................................................................................................................. 1

........................................................................................................................ 1

..................................................................................................... 2

1.7

YMBOLOGY

SED

..................................................................................................................................... 2

DEVICE DESCRIPTION .................................................................................................................................. 3

2.1

ENERAL

ESCRIPTION

.............................................................................................................................. 3

............................................................................................................. 4

2.3

CTUATOR CODING DESCRIPTION

.................................................................................................................. 5

TECHNICAL DATA ........................................................................................................................................ 6

IDENTIFICATION PLATE ............................................................................................................................... 6

INSTALLATION.............................................................................................................................................. 7

5.1

RANSPORT

.............................................................................................................................................. 7

5.2

ECEPTION

............................................................................................................................................... 8

5.3

TORAGE

................................................................................................................................................. 8

5.4

EQUIREMENTS OF

TABILITY

...................................................................................................................... 8

5.5

NTERFACE DOCUMENT AND DIMENSIONAL DRAWING

......................................................................................... 8

5.6

NSTALLATION

............................................................................................................................................ 9

5.7

ISASSEMBLING

....................................................................................................................................... 12

OPERATION AND USE ................................................................................................................................ 13

6.1

PERATION DESCRIPTION

.......................................................................................................................... 13

6.2

NTENDED USE

......................................................................................................................................... 13

6.3

EASONABLY FORESEEABLE MISUSE

........................................................................................................... 13

6.4

PERATING LIMITS

................................................................................................................................... 14

6.5

ESIDUAL

ISKS

...................................................................................................................................... 14

INSTRUCTIONS FOR THE OPERATOR ....................................................................................................... 15

7.1

TART

............................................................................................................................................... 15

7.2

TROKE ADJUSTMENT

............................................................................................................................... 15

7.3

ANUAL

VERRIDE

.................................................................................................................................. 18

MAINTENANCE ........................................................................................................................................... 20

8.1

ERIODIC

NSPECTIONS

............................................................................................................................. 20

8.2

PECIAL MAINTENANCE

............................................................................................................................. 21

8.3

EPAIRS

................................................................................................................................................. 25

8.4

ECHANISM

UBRICATION

......................................................................................................................... 26

8.5

YDRAULIC

LUID

.................................................................................................................................... 26

TROUBLESHOOTING .................................................................................................................................. 27

PARTS LIST GENERAL ASSEMBLY ....................................................................................................... 28

SPARE PARTS ........................................................................................................................................ 34

DECOMMISSIONING................................................................................................................................ 35

DECLARATION OF INCORPORATION .................................................................................................... 36

Содержание STI RTQH Series

Страница 1: ...Quarter turn hydraulic actuator RTQH Series Single acting version type RTQHS INSTRUCTION MANUAL 5400...

Страница 2: ...5 Revised 5 1 M Bozzarelli F Tondolo 06 12 2017 4 Revised 1 6 added 7 3 M Bozzarelli F Tondolo 15 02 2016 3 Revision M Bozzarelli D Lamoure 02 10 2015 2 Revision M Bozzarelli D Lamoure 24 10 2013 1 R...

Страница 3: ...L DATA 6 4 IDENTIFICATION PLATE 6 5 INSTALLATION 7 5 1 TRANSPORT 7 5 2 RECEPTION 8 5 3 STORAGE 8 5 4 REQUIREMENTS OF STABILITY 8 5 5 INTERFACE DOCUMENT AND DIMENSIONAL DRAWING 8 5 6 INSTALLATION 9 5 7...

Страница 4: ..._____________________________________________________________________________________ STI S r l Via Dei Caravaggi 15 24040 Levate BG ITALY www imi critical com Manual 5400 rev 05 02 2018 RTQHS iii...

Страница 5: ...i sales imi critical com 1 3 Manufacturer With respect to Machinery Directive 2006 42 EC the Manufacturer of the described RTQHS actuator series is STI S r l as specified on the machinery label 1 4 Te...

Страница 6: ...r use in potentially explosive atmospheres ATEX Applicable only when electrical control panel is supplied integrate with the actuator 1 7 Symbology Used 1 7 1 Signs of warning and or danger Please pay...

Страница 7: ...to the hydraulic cylinder into the rotary movement which is necessary for valve operation The travel stroke of the yoke is adjustable between 4 degree at both ends of the nominal travel by means of t...

Страница 8: ...018 RTQHS 4 2 2 Identification of the Main Parts The RTQHS actuator is composed by six main parts identified in the attached Fig 1 1 Scotch yoke mechanism 2 Hydraulic cylinder 3 Spring cartridge 4 Sto...

Страница 9: ...WR HP RTQHS Model02 Manualhandwheel Y S Springsize Version Model05 Model06 Model07 Model08 Diameter 235mm Diameter 280mm Springpackmodel Diameter 100mm Diameter 135mm Diameter 160mm Diameter 300mm Dia...

Страница 10: ...3 207 or 345 bar Operating pressure range Depending on customer requirements and specifications Data are available on actuator nameplate Max operating torque MOT RTQHS 01 models up to 12 000 Nm RTQHS...

Страница 11: ...g of the actuator alone and not for the valve actuator assembly Avoid that during the handling the actuator passes above the staff The actuator should be handled with appropriate lifting means conside...

Страница 12: ...iod If the actuator needs storage before installation follow these steps Place it on a wood surface pallet or on metallic support so that they are not in direct contact with the ground in order not to...

Страница 13: ...bly and setting of the unit Check that the outer surface of the actuator is free from dust and dirt Clean the actuator flange and remove anything that might prevent a perfect adherence to the actuator...

Страница 14: ...ces of valve and actuator or bracket and tighten the nuts fixing the bolts with the torque specified into the following Table 1 Table 1 Threading Tightening torque Nm Threading Tightening torque Nm M8...

Страница 15: ...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 ti...

Страница 16: ...ct the hydraulic power and to exhaust the cylinder and any other pressure retaining component mounted on the actuator Before removing the screws between actuator and valve or adaptor flange or mountin...

Страница 17: ...ty service This RTQHS actuator is produced by STI srl Manufacturer and identified by a label with a product designation code STI srl will not be liable for any possible damage or physical injury resul...

Страница 18: ...s severely forbidden to use the actuator under conditions other than those provided on the nameplate 6 5 Residual Risks Warning The actuator has parts under pressure use the due caution Use individual...

Страница 19: ...ve It is important that the mechanical stops of the actuator and not those of the valve stop the rotary stroke at both extreme valve positions fully open and fully closed except when different configu...

Страница 20: ...ng an Allen wrench engaged on the on the hexagonal receptacle Fig 5 Stroke adjustment detail Fig 6 Stroke adjustment detail 7 2 2 Spring to Open version 7 2 2 1 Setting of the stopper on the cylinder...

Страница 21: ...g screw 8 2 until it stops on the end part of the internal spring stem Taking care not to damage it reinstall the sealing washer 8 4 and screw until it fit into the groove of the spring cartridge bush...

Страница 22: ...ing paragraphs 7 3 1 1 and 7 3 1 2 provide the information to enable the operator to know the position of the manual override Position of the valve is provided by the local indicator described at para...

Страница 23: ...closed in the specific Instruction Manuals 2094 and 6005 the following steps after the restoring of automatic operation are recommended for actuators used in SIL applications restore the supply pressu...

Страница 24: ...drain cock Disassemble the cup periodically and wash it with soap and water disassemble the filter if this is made up of a sintered cartridge wash it with nitrate solvent and blow through with air If...

Страница 25: ...hen performing any maintenance operations Warning Before proceeding with any maintenance operation the following instructions must be respected Disconnect any operating lines providing air pressure el...

Страница 26: ...re replace cover gasket clean the housing and cover After removing the cover you may disassemble the bushing 1 3 and replace the O ring 1 15 1 16 Clean the seal groove carefully and lubricate it with...

Страница 27: ...tract the scotch yoke and guide block disassemble the bushing 1 3 and then replace the O rings 1 12 1 13 Fig 15 Scotch yoke mechanism seals replacement To replace the gasket between actuator and sprin...

Страница 28: ...d Remove the nuts 2 8 from tie rods remove the end flange 2 20 after that replace the o ring 2 16 and back up ring 2 2 from the seal groove Disassemble the cylinder tube 2 4 to replace the sliding gui...

Страница 29: ...uator re assembling Assemble the hydraulic cylinder to the housing tightening with recommended torque table the screw between cylinder and housing Replace o ring at the bottom of the housing making at...

Страница 30: ...Yellow Brown Physical state Semi solid at ambient temperature Odour Slight Density 966 kg m at 15 C Flash Point 215 C COC Based on synthetic oil Dropping point 260 C ASTM D 566 Product code 001A0065 I...

Страница 31: ...settings Adjust speed controls to increase flow Exhaust port blocked Remove and clean the exhaust port silencers and replace Wear of the main valve Consult valve manufacturer documentation Actuator t...

Страница 32: ...section includes the general drawings and parts lists for each assembly and subassembly of RTQHS actuators Important When ordering spare parts please indicate the serial number embossed on the actuato...

Страница 33: ...k 1 Carbon steel 3 Scotch yoke bushing 2 Bronze 4 Housing 1 Carbon steel 5 Cover 1 Carbon steel 6 Cylinder pin 4 Alloy steel 7 Scotch yoke 1 Carbon steel 8 Cover gasket 1 Fiber 9 Plate 1 Carbon steel...

Страница 34: ...l 6 Plug 2 Carbon steel 7 Retaining flange 1 Carbon steel 8 Tie rod nut Carbon steel 9 Sliding guide 2 PTFE 10 Piston seal 1 PTFE NBR 11 Piston 1 Carbon steel 12 Rod seal 1 2 PTFE NBR 13 Washer 1 Carb...

Страница 35: ...aravaggi 15 24040 Levate BG ITALY www imi critical com Manual 5400 rev 05 02 2018 RTQHS 31 Table 6 Stopper assembly for hydraulic cylinder Item Description Qty Material Spare Parts 1 Protection Washer...

Страница 36: ...ion Q ty Material Spare Parts 1 Spring ring 1 Alloy steel 2 Spring ring 1 Alloy steel 3 Bushing 1 Steel Bronze PTFE 4 Thrust flange 1 Carbon steel 5 Head flange spring guide 1 Carbon steel 6 Spring 1...

Страница 37: ...escription Q ty Material Spare parts 1 Elastic ring 1 Alloy steel 2 Bushing 1 Steel Bronze PTFE 3 Thrust flange 1 Carbon steel 4 Intermediate guide 1 Carbon steel 5 Head flange 1 Carbon steel 6 Spring...

Страница 38: ...g screw 1 Stainless steel 3 Nut 1 Stainless steel 4 Sealing washer 1 Elastomer 5 O ring 1 NBR NBR standard material for temperature range from 30 C up to 100 C 11 SPARE PARTS Spare part kit for single...

Страница 39: ...ion of actuator parts should be made from specialized personnel Before starting a large area should be created around the actuator so to allow any kind of movement without problems of further risks cr...

Страница 40: ..._______________________________________________________________________ STI S r l Via Dei Caravaggi 15 24040 Levate BG ITALY www imi critical com Manual 5400 rev 05 02 2018 RTQHS 36 13 Declaration of...

Страница 41: ......

Страница 42: ...ision Via San Francesco 18 29017 Fiorenzuola d Arda PC Italy Tel 39 035 2928 2 Fax 39 0523 1715 295 IMI Critical Engineering Lakeside Solihull Parkway Birmingham Business Park Birmingham B37 7XZ Unite...

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