RIDGID Combo Roll Groover - Manual (Page 14)

• Stand facing the roll groover with access to (on
the same side as) the FOR/OFF/REV switch.
• Control the ON/OFF action of the foot switch and
quickly release the foot switch if needed.
• Have convenient access to the groover and ratch-
et wrench without reaching over the roll groover.
• Place right hand on pipe being grooved if needed.
• Have good footing and proper balance.
3. Move the FOR/OFF/REV switch to the REV (reverse
position). Do not run the 975 Combo Roll Groover
in the FOR (forward). Because of the design of the
975 Combo Roll Groover, this will cause the pipe
to “spiral” out of the roll groove rolls and may
allow the pipe to fall.
4. Place one hand on the on the head of the ratchet/top
of the feedscrew and the other hand on the end of the
ratchet.
5. Press the foot switch to start the power drive. Watch
the pipe rotate and be sure that the face of the pipe
stays in contact with the cover plate of the roll groover.
If the pipe starts to move away from the roll groover
cover plate, release the foot switch to prevent the pipe
from spiraling off and falling. If needed, re-set up the
pipe
(see Pipe Set Up Section). If the pipe end is de-
formed, it will need to be cut off and a new groove
prepared.
6. As the pipe completes a full rotation, tighten the feed-
screw another 1 /
4
turn. Continue to monitor the pipe
end to make sure that it is in contact with the cover
plate. Do not tighten the feedscrew more than
1 /
4
turn per pipe rotation. Aggressive tightening of the
feedscrew can cause excessive groove flare or cause
the pipe to spiral off the drive shaft.
7. Continue tightening the feedscrew 1 /
4
turn per pipe rev-
olution until the head of the adjusting screw stops
against the top of the roll groover. Do not continue
tightening the feedscrew after the adjusting screw
reaches the top of the roll groover, this can damage
the adjusting screw. Allow the pipe to rotate at least
two more full rotations in this position to insure uniform
groove depth.
8. Release the foot switch and move the FOR/OFF/REV
switch to the OFF position.
9. Turn the feedscrew counter-clockwise and raise the
groove roll so that the pipe can be removed from
the machine.
10. Inspect the groove.
• Make sure that the groove is fully formed.
• Check the groove diameter and make sure it is
within specification.
• Check any other items required by the fitting man-
ufacturer.
If any problems are found, the groove cannot be used.
Setting The Groove Diameter For
Copper Tubing
When using the 975 Combo Roll Groover for copper
tube, the groove depth gauge on the groover cannot be
used. It will give incorrect groove diameters.
1. Turn the feedscrew clockwise to bring the groove
roll down in contact with the pipe outside diameter,
then turn the feedscrew one quarter additional turn.
The adjusting screw may need to be loosened (turned
counter-clockwise) to allow the groove roll to contact
pipe. The pipe and roll groover should be secure to
each other at this point.
2. Make sure the groove depth gauge is in the grooving
position. (Figure 10B)
3. Turn the adjusting screw until it is flush with the top
plate of the groover.
4. Find the diameter and type of pipe to be grooved on
Table B and back the adjusting screw off the top
plate the corresponding number of turns. For exam-
ple, for 4" Sch. L copper, back the adjustment screw
1
1 /
4
turns.
5. Go to step 4 of “Setting/Measuring The Groove
Diameter”.
975 Combo Roll Groover Tracking Tips
The main issue users encounter when roll grooving is the
pipe “spiraling” or “walking off” the driveshaft or not “track-
ing” properly. For good tracking, it is important that all of
the instructions are followed. If, even after following all
instructions, the pipe will not properly track, there are
several other options to improve tracking.
Ridge Tool Company 12
975 Combo Roll Groover
Chart B – Depth Adjustment for Roll Grooving Copper
Tubing
Depth Adjustment for Roll Grooving Copper Tubing
(Adjusting Screw Turns)
Dia. K L M DWV
2-2.5" 7 /
8
7 /
8
5 /
8
5 /
8
3" 1 1 /
16
1 1 /
16
1 1 /
16
1 1 /
16
4" 1 1 /
4
1 1 /
4
1 1 /
4
1 1 /
8
5" 1 1 /
2
1 1 /
2
1 1 /
2
1 1 /
2
6" 1 13 /
16
1 3 /
4
1 3 /
4
1 3 /
4
8" 2 1 /
2
2 3 /
8
2 1 /
8
2 1 /
8