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975 Combo Roll Groover
Forming The Roll Groove
1. Confirm that the equipment and pipe are properly
set-up.
Figure 12 – Roll Groover Operating Position
2. Assume a proper operating position. Position the
power drive foot switch so that the operator can
control the power drive, the roll groover and the pipe
to be grooved. As shown in Figure 12, the position
should allow the operator to:
• 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 ratchet
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 Groov er
in 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.
12
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 pre-
vent the pipe from spiraling off and falling. If needed,
re-set up the pipe (see Pipe Set-Up in Roll Groover
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
feedscrew another
1
/
4
pipe end to make sure that it is in contact with the
cover plate. Do not tighten the feedscrew more than
/
turn per pipe rotation. Aggressive tightening of the
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4
feedscrew can cause excessive groove flare or cause
the pipe to spiral off the drive shaft.
7 . Continue tightening the feedscrew
revolution 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 uni-
form 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
turn. Continue to monitor the
/
turn per pipe
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4
999-998-995.10_REV D
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