Mathey Dearman CGM Cold Cutting System - Manual (Page 24)

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9.7 – TROUBLESHOOTING GUIDE (continued)
Symptom Possible(s) Cause Corrective Action
The Cutter Motor
(Item Noº 29 or 53)
does not seem to
have enough power
to rotate the
Cutting and
Beveling Blades.
(Continued)
1. Air or Hydraulic Power
Supply Pressure is
incorrectly set.
2. Air or Hydraulic Power
Supply System Pressure and
Volume are not large
enough.
3. Air or Hydraulic Hoses over
15meters (50 feet) are too
small. The Power Supply
System cannot provide
enough pressure and volume
or volume to the CGM.
4. The Air Filter Device is
connected to the Hoses in
the proper direction.
1. Readjust the Air or Hydraulic Power Supply output to the
proper pressure.
2. Replace the Air or Hydraulic Power Supply with a power
supply that meets the requirements list in Section 2.
3. Increase diameter of the Air or Hydraulic Hoses accordingly to
the length of Air or Hydraulic Hose required.
4. Reverse the Air Hoses to the Air Filter Device
Machine is
excessively
vibrating during
the cutting process.
1. Cutting and/or Beveling
Blades are dull.
2. Excessive forward speed.
3. Bearings are worn
1. Move Start / Stop Control to the Stop Position. Shut Down Air
or Hydraulic Power Supply. Replace Blades and follow start
up procedure.
2. Rotate Speed Regulator Valve 2 or 3 marks clockwise to reduce
volume of Air or hydraulic Fluid to the forwarding Motor.
Increase flow to the forwarding motor as necessary.
3. Check and replace the bearings, if rotation of bearing is rough or
there is play in the bearing.
When the bevel on
the pipe end is cut
out of the square.
1. The machine was not taken
one revolution around the
pipe prior to making the cut.
2. The pipe is large diameter
or the pipe wall is not
uniform.
3. Rear Cutter Side Wheel has
lifted off the pipe.
1. Rotate the machine one full revolution around the pipe and then
cut the pipe.
2. Contact Mathey Dearman, Inc. or CIA Mathey Italiana about
purchasing the Guide Strip or instructions for the making of the
Guide Strip.
3. Rotate the Machine Speed Control clockwise about 2 or 3 marks
on the Dial. Recut the pipe.
The Cutter does
not rotate.
1. Bronze Worm Gear is
stripped or damaged
2. Feather Key is sheared
1. Replace Bronze Worm Gear. Return to Mathey Dearman, Inc.
or C.I.A. Mathey Italiana for repair.
2. Replace Feather Key. Return to Mathey Dearman, Inc. or C.I.A.
Mathey Italiana for repair.
The Air or
Hydraulic
Forwarding Motor
(Item Noº 126 or
59) and/or Cutter
Motor (Item Noº
29 or 23) will not
rotate.
1. Cutter Control Knob is in
the OFF position.
2. Air or Hydraulic Hoses are
kinked or have obstruction.
3. No air or hydraulic pressure
1. Make sure the Cutting and Beveling Blades are clear of the pipe.
2. Move the Cutter Control Knob to the ON Position.
3. Shut Down Air or Hydraulic Power Supply and bleed air or
hydraulic pressure from Hoses. Repair or replace Air or
Hydraulic Hoses. Follow the start up procedure.
Follow the Air or Hydraulic Power Supply
Manufacturer’s Parts and Operating Manual.
No coolant flow
from the Lubricator
Nozzle.
1. No air flow to the Blade
Lubrication System
2. Lubricator Jet clogged
3. Lubricator System is not
siphoning coolant from the
Coolant Reservoir.
1. Move the Air Shutoff Valve to the ON Position.
2. Disassemble the Coolant Jets and remove debris.
3. Make sure Coolant Jets are free of debris. Check for kinks
in the Coolant Lines.