Mathey Dearman Maxi Jolli Chain Machine - Manual (Page 14)

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Table 4 - Maxi Jolli Chain Machine Trouble Shooting Guide
Symptom Probable Cause Corrective Action
Manual and Motorized Chain Machine
Machine
slips on the
pipe
1. Drive Chain (Figure 5 Item 21) is too long. 1. Shorten Chain as necessary.
2. Pipe surface is too smooth.
2. Rough up surface of pipe.
3. Weld bead is too tall. 3. Grind weld bead flush with pipe surface.
4. Inadequate chain tension 4. Shorten Chain as needed.
5. Weld seam was not ground flush causing
inadequate chain tension
5. Grind weld seam smooth with surface of
pipe.
Machine is
cutting the
pipe out of
square
1. The Machine has not been taken one (1)
full turn around the pipe prior to
cutting.
1. When the machine is used without Guide
Strip, rotate the machine 1 full rotation
around the pipe prior to cutting the pipe.
2. A Guide Strip was not used to cutting pipe
larger than 18”.
2. Install the Guide Strip on pipe.
3. A Guide Strip was not used when cutting
spiral weld pipe.
3. Install the Guide Strip on pipe.
4. A Guide Strip was not used when cutting
pipe on a angle.
4. Install the Guide Strip on pipe.
5. A Guide Strip was not used when cutting
vertical pipe.
5. Install the Guide Strip on pipe.
6. A large plasma torch is being used with
the machine. 6. Install the Guide Strip on pipe.
7. There is too much play between Rack
Holder (12) and Sliding Support (14)
7. Tighten Screws in Sliding Support.
8. The Tracer Point (13C) does not make
contact with the pipe during machine’s
rotation around the pipe.
8. Adjust the Tracer Point so that it makes
contact the pipe through the machines’
entire rotation.
Motorized Machines Only
Machine
does not
operate in
forward or
reverse
1. No voltage at Power Source. 1. Restore power at source.
2. Fuse is blown 2. Replace Fuse.
3. Connection between Motor Control Box
and machine is loose or disconnected.
3. Reconnect wiring
4. Set Screw (22C) in Coupling Sleeve
(22A) is not engaged on the flat of the
shaft of worm screw (3E).
4. Make sure Set Screw is above flat on Motor
Shaft and tighten
5. Set Screw (22C) in Coupling Sleeve (22A)
has backed off and is making contact with
the bore of the motor adaptor (22)
5. Tighten the Set Screw (22C ) in Coupling
Sleeve (22A or 22A1). Make sure Set Screw
is on the flat of the shaft of worm screw (3E).
Machine will
not climb
uphill when
cutting thick
wall pipe
1. Motor is operating below its curve power. 1. Use a cutting tip 1 to 2 sizes larger