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Manntek DCC Service Instruction

4” hose unit
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Download this manual See also: Operating Manual
DCC Service instruction
4" hose unit
manntek.se

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Summary of Contents for Manntek DCC

  • Page 1 DCC Service instruction 4” hose unit manntek.se...
  • Page 2 2 of 10 - Version 181002...
  • Page 3 4” : SS ATERIAL ARTS NEEDED FOR SERVICE Spare part kit and O-ring kit (see page 4) YPE OF CONNECTION Threaded and Flanged couplings have the same service instruction. ERFORM A SERVICE If leaking According to application service plan LEASE NOTE Make sure that you are using no grease for cryogenic applications.
  • 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 Unscrew and remove the lock screw (pos 23) and o-ring (pos 78) from the swivel sleeve. Tool: Hexagon wrench No. 5 Put a small container underneath the coupling and start twisting the svivel sleeve, so the balls drop out, into the container. Placing a tank unit in the hose unit will make it easier to twist.
  • Page 6 Remove the inner package from the hose unit body. Dismounting the inner package by removing the pin and splint (pos 5 & 63) from the piston. Remove all parts from the inner package in order to change the seal (pos 8) on the driving plate and the seal (pos 3) on the piston.
  • Page 7 Change the O-ring (pos 3) on the piston. Make sure that the O-ring doesn’t get scratches when mounting. Reassemble the inner package. Reasemble the piston o the piston guide, make sure that the splint (pos 63) is correct mounted. If necessary change the three shafts (pos.18), locking nuts (pos.19) and rollers (pos.17) to new ones.
  • Page 8 Before the coupling body is placed back on the driving plate package, make sure that the part where the upper cam curve ends, shall be placed exactly over one roll, and the heel on the driving plate package should be placed under the hole for the shaft.
  • Page 9 Drop the 48 balls into the swivel joint, turn the swivel sleeve after each ball. Use Loctite® 243 and screw the lock screw (pos 23) and o-ring (pos 78) into the swivel ring without any force! Risk to deform the ball bearing! Finally, make a visual inspection that everything is in its place.

  • Page 10: Test Procedure

    TEST PROCEDURE After each service a tightness test of each coupling is mandatory. The following test parameters are in accordance with EN12266 and EN14432: Test procedure Test pressure Acceptance criteria No visually detectable Tightness test (liquid 6 bar +/- 1 bar leakage for the duration of nitrogen) the test...