IMI STI RTC Series Instruction Manual
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IMI STI RTC Series Instruction Manual

Quarter turn pneumatic actuator
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Quarter turn pneumatic actuator
RTC Series
Double acting version type RTC
Single acting version type RTCS
INSTRUCTION MANUAL 5100

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Summary of Contents for IMI STI RTC Series

  • Page 1 Quarter turn pneumatic actuator RTC Series Double acting version type RTC Single acting version type RTCS INSTRUCTION MANUAL 5100...
  • Page 2 STI S.r.l has taken every care in collecting and verifying the documentation contained in this Instruction Manual. The information herein contained are reserved property of STI S.r.l. _____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS...

  • Page 3: Table Of Contents

    Single acting version spring to close (RTCS_CL) ................17 7.5.3 Single acting version spring to open (RTCS_OP) ................17 _____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS...
  • Page 4 11.2 .................. 33 PARE PART KIT FOR SINGLE ACTING ACTUATOR SERIES DECOMMISSIONING ..........................34 DECLARATION OF INCORPORATION ......................35 _____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS...

  • Page 5: General Information

    24040 Levate (BG) Italy Tel. +39 035 2928.2 Fax +39 035 2928.247 imisti.sales@imi-critical.com 1.4 Terms and conditions STI S.r.l. guarantees each single product to be free from defects and to conform to current goods specifications. The warranty period is one year from the date of installation by the first user, or eighteen months from the date of shipment to the first user, whichever occurs first.

  • Page 6: Applicable Standards And Directives

    ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 2 -...

  • Page 7: Device Description

    Pneumatic cylinder.(with internal spring for single acting version) Stopper screw assembly. Stop setting screw kit Fig. 1: Main parts for RTC/RTCS actuator series ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 3 -...

  • Page 8: Actuator Coding Description

    Spring type G Action Spring to Close Spring to Open Acce s s orie s Manual Handw heel ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 4 -...

  • Page 9: Technical Data

    It is forbidden to modify the information and the marks imprinted in the nameplate without previous written authorization by STI S.r.l. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 5 -...

  • Page 10: Installation

    For base actuator dimensions and weights please consult www.stiactuation.com Fig. 2 – Lifting points for RTC/RTCS actuator series ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 6 -...

  • Page 11: Reception

    5.5 Interface document and dimensional drawing Pneumatic diagrams, wiring diagrams and dimensional drawing are furnished with document accompanying the actuator. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 7 -...

  • Page 12: Installation

    Fig. 3 – Assembling of the actuator on the valve ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 8 -...

  • Page 13: Pneumatic Connections

    Check the absence of leakages from pneumatic connections. If necessary, tighten the nuts of the pipe- fittings. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 9 -...

  • Page 14: Electrical Connections (If Any)

    Warning: If not already removed disconnect all operating pressure from actuator power cylinders. Screws to be removed Fig. 4 – Disassembling of the actuator ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 10 -...

  • Page 15: Operation And Use

    Installation in ambient with not planned conditions: i.e. climatic conditions different from the specified conditions; Insert incorrect fluid into the system; Supply pressure out of required range; ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 11 -...

  • Page 16: Operating Limits

    Emissions of hazardous substances where natural gas is used as motive energy. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 12 -...

  • Page 17: Instructions For The Operator

    (see Fig. 5 and Fig. 6) following the instructions listed here below. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 13 -...
  • Page 18 Operate the actuator with pneumatic supply to check that the actuator moves properly and that there are no leakages. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 14 -...

  • Page 19: Mechanical Manual Override (If Any)

    Turn clockwise the hand-wheel (3) in the end flange to close main valve. To restore the normal/remote condition turn hand-wheel counter-clockwise against travel stop. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 15 -...

  • Page 20: Declutchable Mechanical Manual Override (If Any)

    The following sketches in paragraphs 7.5.1, 7.5.2, 7.5.3, display this information. Note: the information on the sketches are valid for the valves that CLOSE CLOCKWISE. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 16 -...

  • Page 21: Double Acting Version (Rtc)

    7.5.3 Single acting version spring to open (RTCS_OP) MANUAL OVERRIDE DISENGAGED VALVE BLOCKED IN CLOSED POSITION ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 17 -...

  • Page 22: Maintenance

    If STI products (i.e. gasket, o-ring etc) have been on store for longer periods check these for corrosion or deterioration before using these products. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 18 -...

  • Page 23: Special Maintenance

    (see Section 5.4 of this Manual). ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 19 -...
  • Page 24 (1.9) of the guide block (1.5) on the piston rod using a wrench with an extension. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 20 -...
  • Page 25 2 off half rings (2.20 fig.14) are fully hold/engaged into the flange (2.7 fig. 14). ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 21 -...
  • Page 26 Unscrew the travel stop screw to verify that the half rings with the spring fully released are engaged into the flange (2.7) ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 22 -...

  • Page 27: Repairs

    Assemble the nuts (please refer to cylinder sectional dwg.) onto the tie rods. Tighten the nuts to the recommended torque (sec. 5.4.2), alternating between opposite corners. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 23 -...

  • Page 28: Actuator Re-Assembling

    Equivalent products can be used provided that they have the same characteristics and the same range of compatibility with elastomeric and plastic components. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 24 -...

  • Page 29: Troubleshooting

    Incorrect position of the Wrong adjustment of Re-adjust setting valve mechanical stops Wrong electric limit Re-adjust setting switches indication. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 25 -...

  • Page 30: Parts List General Assembly

    Important: When ordering spare parts, please refer to the spare part kit on the attached drawings. Important: When ordering spare parts, use ONLY original STI spare parts. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 26 -...
  • Page 31 Carbon steel O-ring NBR (*) (*) NBR standard material for temperature range from -30°C up to +100°C. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 27 -...
  • Page 32 Tie rods Carbon steel (*) NBR standard material for temperature range from -30°C up to +100°C. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 28 -...
  • Page 33 End Flange Carbon steel (*) NBR standard material for temperature range from -30°C up to +100°C. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 29 -...
  • Page 34 Stainless steel O-ring NBR (*) (*) NBR standard material for temperature range from -30°C up to +100°C. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 30 -...
  • Page 35 Stop setting screw kit part list Item Description Material Spare Parts Stainless steel Stop screw Stainless steel Seal washer PTFE ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 31 -...
  • Page 36 Carbon steel Handwheel Carbon steel (*) NBR standard material for temperature range from -30°C up to +100°C. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 32 -...

  • Page 37: Spare Parts

    ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 33 -...

  • Page 38: Decommissioning

    Important: In all cases check local authority regulation before disposal. ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 34 -...

  • Page 39: Declaration Of Incorporation

    13 Declaration of Incorporation ____________________________________________________________________________________ STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com Manual 5100, rev. 06 06/2020 – RTC/RTCS - 35 -...
  • Page 40 IMI STI - Headquarters Via Dei Caravaggi 15 24040 Levate (BG) Italy Tel. +39 035 2928.2 Fax +39 035 2928.247 IMI STI – Sales Office Via San Francesco 18 29017 Fiorenzuola d’Arda (PC) Italy Tel. +39 035 2928.2 Fax +39 0523 1715.295...

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Sti rtcs series

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