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5.18
The Clamp is now ready to accept mating pipe, fitting or valve which is the same size as the fit-up pipe,
6.0 – FIT-UP WITHOUT USE OF LEVEL AND SUPPORT DEVICE
6.1
Steps 5.1 through 5.18 must be completed before using the following procedure
6.2
Determine if inside or outside diameter is required.
Note:
To check HI-LO on the inside diameter pipes, the best tool to use is the
Mathey Dearman English or Metric Q. C. Welders Gauge
6.3
Move the Pipe, fitting or valve into the Jackbars of the chain clamp.
6.4
Loosen the Thumbscrew (Chart 10 item B7) in the Main Block (Chart 10) and move
the Universal Jackscrew (Chart 10 item B5) to the side of the weld where it is
needed and retighten the Thumbscrew.
6.5
Check the fit-up pipe and the mating pipe to find the section of the two pipes which is the farthest from the pipe
centerline. Tighten the Jackscrew or Jackscrews (Chart 8 item A3) over this point until the outside or inside
diameters of the pipes are in alignment. It may be necessary to loosen the Jackscrew or Jackscrews opposite the
high point to bring the outside or inside diameters of the pipes into alignment. This process may need to be
repeated with several of the Jackbars until the correct alignment or reforming is accomplished.
6.6
The pipes are now ready for welding.
7.0 –
FIT-UP WITH LEVEL AND SUPPORT DEVICE
7.1
Steps 5.1 through 5.18 must be completed before using the following procedure
7.2
Turn the Crank Handle (Chart 13 item D-5) counterclockwise of the Level and Support Device until the Level and
Support Piston (Chart 13 item D-3) extends out of the Crank Housing (Chart 13 item D-2) Piston about 1-1/2” to 2”.
WARNING
: The Mathey Dearman Chain Clamp is designed as a tool for the reforming and
accurate alignment of pipe, pipe fittings, flanges and weld-on valves for welding. It is not
intended to support or lift the entire length of the pipe. Always exercise extreme caution
when using this product.
WARNING:
Failure to support the pipe, fitting or valve properly will result in personal injury.
WARNING:
If a solid surface appears in the opening of the Crank Housing, rotate the
Crank Handle clockwise until the solid surface can no longer be seen.
