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The Trelleborg LCR-S Method

Repairing and Permanently Sealing Main/Lateral Interfaces

The epros®DrainLCR-S system is an essential method and a tool to repair and permanently seal main/lateral interfaces and connections up to 600 mm from the main line down into the lateral. The system can use either an LCR-S hat profile or an LCR-S liner.

The main-to-lateral interface in the main pipe is sealed only by the rim of the LCR-S hat profile, while the LCR-S liner in the main pipe is designed as a short liner. In both cases, the forming element is an inflatable pro-formed hose that serves the same function. This inflatable hose in the form of a cylinder (packer hose), is additionally equipped with another cylinder located at the mid-point (the lateral hose) at an angle of 45° or 90° to the axis of the packer. The LCR-S packer method allows to repair lateral connections with bends from 30° to 90°.

How the Epros® DrainLCR-S Works

The epros®LCR-S system permanently seals main/lateral interfaces and lateral connections (DN 100 – DN 200) by installing either an LCR-S hat profile or an LCR-S liner from the main pipe (DN 135 – DN 600) up to a length of 600 mm.

Absolute Process Control

The repair unit – called LCR-S packer – is inserted in the existing access holes of the main sewer pipe and pushed to the point of repair by a push rod reel system. In case of short distances and small pipe diameters, this can be also done with a pneumatic pushrod attached to the packer. The packer is equipped with a camera, a telescopic wheel system, and a rotary drive for utmost maneuverability and orientation in the pipe. All operations are executed with the help of the external control unit.

Smart Tools to Assist You

The monitoring camera installed on the packer assists in the positioning process. Once the LCR-S packer has reached the junction, the mouthpiece of the LCR-S hat profile or LCR-S liner can be turned by means of the push rod reel system for proper alignment with the branch.

A specially designed lifting mechanism, called “pathfinder”, supports the correct positioning inside the sewer pipe at the damaged lateral connection. You can monitor all operations with the external control unit.

Save Installation Through Control Mechanisms

Starting the inflation process is possible only after the lateral hose is locked in place. When the lateral packer hose has been completely inverted, a clear acoustic signal is given to indicate that the inversion process successfully is finalized.

Curing at Ambient Temperatures

After complete inversion, the pressure will be maintained until the final cure. epros®Silicate resin systems as well as the fast curing EPROPOX FC resin systems are perfectly matching and cure within a short time whilst giving you comfortable handling time during preparation.

When the curing process is complete the packer is to be deflated. Then it can be removed from the pipe.

Technical Components

  • Compressed air hose, 10 m
  • LCR-S control unit with monitor, 60 m hose package and camera
  • LCR-S Cobra reel system, 100 m with flex adapter
  • LCR-S rotary drive
  • LCR-S wheel set
  • LCR-S packer

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