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Manntek PERC Service Instruction

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PERC Service instruction
6"
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Summary of Contents for Manntek PERC

  • Page 1 PERC Service instruction 6" manntek.se...
  • Page 2 2 of 9 - Version 180427...
  • Page 3 PERC 6“ : SS ATERIAL Parts needed for service: Spare part kit and Seal kit (see p. 4) Type of connection: Threaded and Flanged couplings have the same service instruction. Perform a service: If leaking According to application service plan...
  • Page 4 AINTENANCE AND SERVICE INSTRUCTION Always depressurise the system and rinse off the parts before beginning any maintenance work. Use protective goggles. Use tweezers and wear gloves which are sufficient for cryogenic applications. Do not touch adjacent parts with unprotected hands. Rinse off the parts once again before starting the “daily inspection”...

  • Page 5: After Release

    FTER RELEASE When the coupling should go into service there is a danger that the fluid will spurt out. Special protective measures such as personal protective equipment must therefore be adopted. Always ensure the system is cleaned in a proper manner. After cleaning, remove any residue from the cleaning agent.

  • Page 6: Detail Parts After Disassembling

    Be careful when removing the O-ring. Do not scratch the sealing surface. Make sure that the seal doesn’t get scratched when mounting. For mounting the new O-ring use MannTek spare parts only. PERC Test if the Perc valve is rotating without problems OUNTING PISTON The piston is bigger in diameter than the three brackets for the piston guide.
  • Page 7 12. B REAKING BOLTS Replace the bolts only by original spare parts from MannTek with the same breaking force. Total break force for the bolts can be found on the head of each bolt. (13 kN in the pictures)
  • Page 8 14. R EASSEMBLE COUPLING Set both halves onto each other and press them carefully together. The breaking pins should align to the bore holes in the second half. It is important that the bodies align to each other when pressing the halves together. Do it carefully, not to destroy the lip-seal.

  • Page 9: Test Procedure

    TEST PROCEDURE After each service a tightness test of each coupling is mandatory. The following test parameters are in accordance with EN12266, EN14432 and ISO5208: Shell tightness test (air/N2): 6 bar +/- 1bar stop time 60 s. Instead of dry air / N2 we recommend making the tightness test with liquid nitrogen or with LNG.

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