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Manntek DDC Service Instruction

2” hose unit
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DDC Service instruction
2" hose unit
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Summary of Contents for Manntek DDC

  • Page 1 DDC Service instruction 2” hose unit manntek.se...
  • Page 2 2 of 10 – Version 170815...
  • Page 3 2” , SS ATERIAL ARTS NEEDED FOR SERVICE Spare part kit and O-ring kit (see page 4) Tool: Hexagon wrench No. 2 ERFORM A SERVICE If leaking Every year Change of media LEASE NOTE Make sure that you are using the right type of O-rings and seals for the media you are using.

  • Page 4: Daily Inspection

    AINTENANCE AND SERVICE INSTRUCTION Always depressurize the system and rinse off the parts before beginning any maintenance work. Use protective goggles. Do not handle O-ring seals if the material appears charred, gummy or sticky. Use tweezers and wear neoprene or PVC gloves. Do not touch adjacent parts with unprotected hands.
  • Page 5 Begin with unscrewing and remove the lock screw from the swivel ring. Tool: Hexagon wrench No. 2 Mark the position of the swivel sleeve against the swivel ring with an Ø8 mm pin. Unscrew and remove swivel sleeve from swivel ring. Tool: Adjustable wrench Remove the PTFE bushing on top of the coupling body.
  • Page 6 Turn back the unit and remove the driving plate packet from the coupling body. Dismount the handle before you change O-ring. If necessary change the O-ring (pos.21) for dust –protection. Use grease on the new O-ring. Remove and change the O-ring (pos.24) from the groove in the coupling body.
  • Page 7 Check the rollers for easy rotation. Change the O-ring (pos.8) on the driving plate back side. Use grease on the O-ring. Make sure that the O-ring doesn’t get twisted when mounting. Change the O-ring (pos.6) on the driving plate front side. Use grease on the O-ring.
  • Page 8 Before the coupling body is placed on the driving plate packet, 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 packet should be placed under the hole for the shaft.
  • Page 9 Place a new flat seal (pos.29) on the swivel sleeve. (Not needed when NPT- thread or flange) Place the swivel sleeve over the coupling body and screw in the swivel sleeve. Take care that the markings you made in the beginning are aligning. Use Loctite®...

  • Page 10: Test Procedure

    TEST PROCEDURE After each service, a pressure and tightness test of each coupling is mandatory. If only the O-Ring kit is replaced a seat tightness test is enough. The following test parameters are in accordance with EN12266 and EN14432: Test procedure Test pressure Acceptance criteria Shell tightness test...