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Troubleshooting
PROBLEM
Incorrect size of grooving and driving rolls.
Rolled groove too
Mismatched grooving and driving rolls.
narrow or too wide.
Grooving roll and/or driving roll worn.
Rolled groove not
Pipe length not straight.
perpendicular to
Pipe end not square with pipe axis.
pipe axis.
Pipe not level.
Groover not level.
Pipe axis not offset 1/2 degree from drive
roll axis.
Pipe does not track
1/2 degree offset not sufficient.
while grooving.
Not applying pressure to pipe.
Excessive weld seam.
Pipe end not square.
Pipe not level.
Pipe flared at
Operator is advancing groove roll too fast.
groove end.
Pipe is too hard.
Pipe length not straight.
Pipe end not square with pipe axis.
Pipe drifts back
Hard spots in pipe material or weld seams
and forth on
harder than pipe.
driving roll axis
while grooving.
Grooving roll feed rate too slow.
Pipe support stand rollers not in correct
location for pipe size.
Pipe wall maximum thickness exceeded.
Wrong rolls.
Groover does not
roll groove in pipe.
Pipe material too hard.
Adjustment nut not set.
Driving roll knurling plugged with metal or
Pipe slips on
worn flat.
driving roll.
Grooving roll feed rate too slow.
Pump not
Pump release valve open.
delivering oil,
Low oil in reservoir.
cylinder does not
advance.
Dirt in pump body.
CAUSE
5
CORRECTION
Install correct size of grooving and driving rolls.
Match grooving and driving rolls.
Replace worn roll.
Use straight pipe.
Cut pipe end square.
Adjust stand to level pipe.
Level groover.
Offset pipe 1/2 degree
Offset pipe slightly more.
Apply pressure to pipe
Grind flush from end of pipe.
Cut pipe end square.
Adjust stand to level pipe.
Slow down pumping action. (Refer to proper
operating instructions.)
Replace pipe.
Use straight pipe.
Cut pipe end square.
Use high quality pipe of uniform hardness.
Feed grooving roll into pipe faster.
Position pipe stand rollers for pipe size being used.
Check pipe capacity chart.
Install correct rolls.
Replace pipe.
Set depth.
Clean or replace driving roll.
Feed grooving roll into pipe faster.
Close release valve.
Check oil level per instructions.
Have serviced by qualified technician.
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