Mathey Dearman Mini Jolli Chain Machine - Manual (Page 10)

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4.5 - ASSEMBLING THE CUTTING TORCH TO THE MINI JOLLI CHAIN MACHINE
The 1 3/8” (35mm) torch holder (17) is equipped with a knob with 32 pitch or metric sprocket (17/A) to
Adjust the gas torch tip to pipe height. The Mini Jolli Chain Machine can be used in conjunction with a plasma
cutting system to cut stainless steel and non-ferrous pipes.
4.5.1 Verify the torch tip is appropriate size and type of gas per the torch manufacturer’s instructions.
Note: When cutting at 30° or 37-1/2°, multiply wall thickness by 1.3 to determine the cutting
tip size.
Table 4 - How to select the right cutting tip for different cutting thickness and gas.
Acetylene Gas
Part Number
Cutting Thickness
(in/mm)
Part Number
Cutting Thickness
(in/mm)
05-0301-024 3/8 – 9/16 / 10 - 15 05-0301-043 2 – 4 / 50 - 100
05-0301-041 9/16 - 1 / 15 - 25 05-0301-032 4 – 7 / 100 - 175
05-0301-042 1 – 2 / 25 - 50 05-0301-044 7 – 8 / 175 - 200
Propane Gas
Part Number
Cutting Thickness
(in/mm)
Part Number
Cutting Thickness
(in/mm)
05-0301-040 3/8 – 9/16 / 10 - 15 05-0301-035 2 – 3 / 50 - 75
05-0301-033 9/16 - 1 / 15 - 25 05-0301-036 3 – 6 / 75 -150
05-0301-034 1 – 2 / 25 - 50 05-0301-037 6 – 8 / 150 - 200
The
above mentioned tips are for the Mathey Dearman type torch. For other torches and speciality
gas tips contact Mathey Dearman, Inc. For the tip size required for other torches see the torch
manufacturer’s instruction for that torch.
4.5.2 Install the torch into the torch holder (Figure 3 Item 17) and rotate the knob with sprocket (17/A)
to adjust the gas torch tip to pipe height
4.5.3 Move the knob (29M) to check the torch arm tension
4.5.4 Adjust the socket head cap screws (Figure 3 Item 17C) as needed to make sure torch maintains the
torch tip to pipe height.
4.5.5 Install the hoses on the torch per the torch manufacturer’s instructions
4.5.6
Set fuel gas and oxygen regulator pressure per the regulator manufacturer’s instructions.
4.6 - MANUAL MINI JOLLI CHAIN MACHINE CUTTING PROCESS
4.6.1 Follow the instruction listed in section 4.1 through 4.5.
4.6.2 Light the gas torch per the manufacturer’s instructions.
4.6.3 Rotate the crank handle (Figure 3 Item 24) back and forward preheating the pipe to the desired
temperature per the torch manufacturer’s instructions.
4.6.4 Rotate the crank handle while applying the cutting oxygen to the oxy/fuel machine torch per the
torch manufacturer’s instructions to minimise notching of the pipe.
4.6.5 Rotate the crank handle of the machine until the cut is complete. A smooth consistent rotation of
WARNING: Extreme caution should be used when working with oxygen and
fuel gases.
WARNING: Never stand in front of the oxygen and fuel gas regulator when
adjusting the pressure