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

918-I Heavy Duty Roll Grooving Machine
Figure 5 – Squaring Pipe up against Flange of Drive Roll
4. Level pipe by adjusting pipe stand (Figure 6) .
5. Slightly offset pipe and pipe stand (approximately
degree) toward operator (Figure 7) .
Figure 6 – Leveling Pipe on Pipe Support and 918-I Roll
Groover
Figure 7 – Offset Pipe on 918-I (exaggerated for clarity)
8

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 adjust-
ment 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).
1 /
2
3. Back the depth adjustment knob off one turn.
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
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) .
Ridge Tool Company
If pipe begins to "walk off" the drive roll,