Operating The No. 918-I Roll Groover; Pipe Preparation; Pipe/Tubing Lengths; Pipe Set-Up - RIDGID 918-I Manual

918-I Heavy Duty Roll Grooving Machine
Operating the 918-I Roll Groover
WARNING
Do not wear loose clothing when operating a Roll
Groover. Keep sleeves and jackets buttoned. Do
not reach across the machine or pipe.
Do not use this Roll Groover if it has a broken or
missing foot switch. Always wear eye protection to
protect eyes from dirt and other foreign objects.
Keep hands away from grooving rolls. Do not wear
loose fitting gloves when operating groover. Use
pipe stands to support pipe.
When grooving, keep hands away from end of pipe.
Do not reach inside pipe end.

Pipe Preparation

1. Pipe ends must be cut square. Do not use cutting
torch.
2. Pipe out-of-roundness must not exceed the total O.D.
tolerance listed in groove specifications, Table 1.
NOTE! Determine out-of-roundness by measuring max-
imum and minimum O.D. at 90 degrees apart.
3. All internal or external weld beads, flash or seams
must be ground flush at least 2 inches back from
pipe end.
NOTE! Do not cut flats on gasket seat area.
Pipe/Tubing Length
The following chart lists the minimum length of pipe or tub-
ing to be grooved and the maximum length to be grooved
with one (1) pipe stand.
Groovable Pipe Lengths – Inches
Nom. Min. Max.
Size Length Length
1 8 36
1 1 / 8 36
4
1 1 / 8 36
2
2 8 36
2 1 / 8 36
2
3 8 36
3 1 / 8 36
2
4 8 36
Chart A – Minimum/Maximum Pipe Length

Pipe Set-Up

1. Pipe or tubing longer than the specified maximum
lengths listed in Chart A must be supported with two
8
Nom. Min. Max.
Size Length Length
4 8 36
4 1 / 8 32
2
5 8 32
6 O.D. 10 30
6 10 28
8 10 24
10 10 24
12 10 24
(2) pipe stands. The second pipe support should be lo-
cated 3 / of pipe length from roll groover.
4
WARNING Failure to use two stands may result in the
unit tipping or the pipe falling.
2. Raise upper groove roll housing by placing pump re-
lease lever in RETURN position (away from operator)
(Figure 4).
3. Square pipe and pipe support to roll groover making
sure pipe is flush against drive roll flange (Figure 5).
Figure 4 – Close-up of Release Lever on 918-I Pump
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).
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999-998-676.10_REV. C