Adjusting Roll Groove Depth; Forming The Roll Groove - RIDGID 918-I Manual

Figure 6 – Leveling Pipe on Pipe Support and 918-I Roll
Groover
Figure 7 – Offset Pipe on 918-I (exaggerated for clarity)

Adjusting Roll Groove Depth

NOTE! Due to differing pipe characteristics, a test groove
should always be performed when setting up or
changing pipe sizes. The index depth adjustment
knob must be reset for each diameter of pipe/tube.
1. Advance the upper groove roll by placing the pump re-
lease lever in ADVANCE position (toward operator)
and pump the handle until the upper roll contacts the
pipe to be grooved.
NOTE! Upper roll should only touch the pipe surface.
Care must be taken not to penetrate pipe surface
with upper roll by applying excessive pressure.
2. Turn down the indexed depth adjustment knob (clock-
wise) until it stops against the top of the machine
(Figure 8).
3. Back the depth adjustment knob off one turn.
999-998-676.10_REV. C
918-I Heavy Duty Roll Grooving Machine
Figure 8 – Close-up of Depth Adjustment Knob Being
Turned Down Against Top Casting

Forming the Roll Groove

Pipe wall thickness cannot exceed the max-
CAUTION
imum wall thickness specified in the "Pipe Maximum
and Minimum Wall Thickness" Table II. Do not use to
groove 8" schedule 40 steel pipe that is harder than
150 BHN.
1. Flip the switch from OFF and step on machine foot
switch while applying downward pressure on the
918-I pump handle. Allow one full pipe rotation be-
tween quarter strokes of the pump handle.
WARNING If pipe begins to "walk off" the drive roll,
stop the machine and check "Pipe Set-Up" procedure.
2. To help prevent "walking", apply pressure on outside
of pipe with right hand (Figure 9).
WARNING Do not reach inside of pipe. Keep hands
away from sharp edges and burrs on end of pipe.
NOTE! Do not overfeed upper groove roll. Maintain con-
stant even downward pressure, pausing to allow
one pipe revolution per quarter stroke of the
pump handle.
3. When the depth adjustment knob contacts the ma-
chine casting, allow two complete pipe revolutions
to even out groove depth.
4. Release foot switch and retract upper groove roll by
placing the pump release lever in the RETURN posi-
tion (toward operator).
5. Check groove diameter before proceeding with addi-
tional grooves.
9