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rotate in the correct direction or the foot switch does
not control the machine operation, do not use the
machine until it has been repaired.
• Depress and hold the foot switch. Check the rota-
tional speed of the unit. Inspect the moving parts for
misalignment, binding, odd noises or any other
unusual conditions. Release foot switch. If the rota-
tional speed exceeds 57 rpm, do not use the unit for
roll grooving. Higher speeds may increase the risk
of injury. If unusual conditions are found, do not use
the equipment until it has been repaired.
• Move the switch to the REV (reverse) position.
Press and release the foot switch. Con firm that
the driveshaft rotates in a clockwise direction as you
face the front of the chuck. If the unit does not
rotate in the correct direction, do not use the
machine until it has been repaired.
• Move the switch to the OFF position. With dry
hands unplug the machine.
Pipe Preparation
These are generalized instructions. Always
NOTICE
follow grooved coupling manufacturer's specific recom-
mendations for pipe end preparation. Failure to follow the
grooved coupling manufacturer's recommendations may
lead to an improper connection and cause leaks.
1. Cut pipe to proper length. Be aware of the minimum
lengths of pipe that can be grooved for each size of
pipe (See Chart A) . Grooving pipe shorter than min-
imum length increases the risk of injury from crushed
fingers and entanglement.
Make sure pipe end is cut square and free of burrs.
Burrs can catch or cut gloves or fingers during groov-
ing. Cut off method and large burrs can effect the
quality of the groove made and the tracking of the
Groove. Do not attempt to groove pipe that has been
cut with a torch.
2. All internal/external weld beads, flash, or seams must
be ground flush at least 2" back from the end of the
pipe. Do not cut flats into gasket seat area, this could
cause leaks.
3. Remove all scale, dirt, rust and other contaminants at
least 2" back from the end of the pipe. Contaminants
can clog the drive knurls and prevent proper driving
and tracking of the pipe while grooving.
Pipe Set Up In Roll Groover
1. Confirm that the power drive switch/threading ma -
chine is in the OFF position.
2. Make sure to have appropriate support available for
the pipe you are going to be grooving. Chart A lists
the maximum length of pipe to be grooved using a
single pipe stand. Longer lengths of pipe should be
supported with at least two pipe stands. Failure to
properly support the pipe may allow the pipe or the
pipe and machine to tip and fall. Do not groove pipe
shorter than the minimum length.
Nom.
Size
1
1
1
/
4
1
1
/
2
2
2
1
/
2
3
3
1
/
2
Chart A – Minimum/Maximum Pipe Length To Be Grooved
3. Place the required pipe stands in front of the roll
groover. For lengths supported by a single stand, the
stand should be placed slightly more than half the
length of the pipe from the roll groover cover plate. For
lengths of pipe requiring more than one stand, the
stands should be placed
ends of the pipe. It may be appropriate to use more
stands in some situations. Stand height should be
adjusted so that the pipe can fit over the drive roll.
4. Make sure that the groove roll has been retracted
enough to allow the pipe to be placed over the drive
shaft. If needed, turn the feedscrew counter-clockwise
to raise the groove roll.
5. Place the pipe end over the driveshaft and set the
pipe down onto the pipe stand(s). Make sure the
pipe is stable.
Figure 8 – Placing Pipe Over Driveshaft and Flush To
6. Adjust pipe and pipe stands so that the end of the
pipe is flush to the roll groover cover plate and that the
inside of the pipe contacts the top of the driveshaft
Ridge Tool Company
975 Combo Roll Groover
Min.
Max.
Nom.
Length Length
Size
8
36
4
8
36
4
1
/
2
8
36
5
8
36
6 O.D.
8
36
6
8
36
8
36
With One Stand (All Dimensions In Inches)
1
/
of the pipe length from the
4
Cover Plate
Min.
Max.
Length Length
8
36
8
32
8
32
10
30
10
28
Cover Plate
9
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