Mathey Dearman Maxi Jolli Chain Machine User Manual
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To lengthen or shorten the Cottered Chain use the following procedure
4.2.1
Select the chain segments required to extend the chain to the length mentioned in Table 1. A Chain
Calculation Formula for determining the length of chain needed can be found on the Internet at
under Product Formulas.
4.2.2
Set the Chain (Figure 5 Item 21) segment that is at the proper length in the Chain Unpinning Block
Figure 5 Item 20B) and remove the Chain Pin with the Pin Extractor (Figure 5 Item 20A).
NOTE: If one pin is removed the chain, the ends are joined using a Joint Bolt (Figure 5 Item 21B) and
Nut (Figure 5 Item 21A). If two pins are removed the chain is joined with the Chain Junction Link
(Figure 5 Item 21D).
4.3 – CUTTING 16” PIPE AND SMALLER
4.3.1
Before placing the machine on the pipe, check area where the machine and guide strip will be placed
on the pipe for concave or convex areas in the pipe surface. Remove as much of the deformity that is
allowed by the welding specification.
4.3.2 Set the machine on the portion of the pipe that is to remain on the pipe stand, with the wheels on the
torch arm side of the machine about 7” – 9” (179 - 229mm) away from the cut line. The distant from
cut line to the wheels is dependent on the torch bevel angle.
4.3.3
Place the Chain (Figure 5 Item 21) over the sprocket (Figure 5 Item 4A).
4.4.4
Lay the chain (Figure 5 Item 21) to rest on the sprocket (Figure 3 5 Item 4A).
4.4.5
Join the Chain Segments with Chain Junction Link (Figure 5 Item 21D) or Joint Bolt (Figure 5 Item
21A) and Nut (Figure 5 Item 21B). If one pin is removed the chain, the ends are joined using a Joint
Bolt (Figure 5 Item 21B) and Nut (Figure 5 Item 21A). If two pins are removed the chain is joined
with the Chain Junction Link (Figure 5 Item 21D).
4.3.4
To apply tension to the chain rotate both handles (Figure 5 Item 8E) over center
4.3.5
For a square cut, rotate the Maxi Jolli Chain Machine 1 full turn around the pipe to insure the chain is
perpendicular to the outside diameter of the pipe.
4.3.6
Recheck chain tension and adjust if required.
4.3.7
The Chain Machine is now ready for the installation of the fuel torch.
4.4
– CUTTING 18” PIPE AND LARGER
For accurate cuts on diameter larger a Guide Strip is required. The following the procedure for
installation of the Guide Strip
4.4.1
Check the area 8” to 18” (203-457mm) away from the cut line where the Maxi guide strip will fit on
the pipe for concave or convex areas in the pipe surface. Remove as much of the deformity in the
pipe surface that is allowed by the welding specification in this area.
WARNING: Do not place the machine on the portion of the pipe that is being cut off.
This will result in possible injury and unrepairable damage to the Maxi jolli Chain
Machine.
WARNING: When placing the chain (Figure 5 Item 21) on the sprocket (Figure 3 5
Item 4A) the hand can be pinched by the chain.
WARNING: When rotating the handles (Figure 5 Item 8E) over center take care that
they do not become caught between the handle and upper locking plate (Figure 5 Item
5).
Warning: Do not place the machine on the portion of the pipe that is being
cut off, this will result in serious injury to the operator and unrepairable
damage to the Maxi Jolli Chain Machine.