PRE-OPERATION ADJUSTMENTS
Every RG3212 tool is checked and tested at
the factory prior to shipment . Before grooving,
however, the following adjustments should be
made to ensure proper tool operation .
WARNING
• Always disconnect the tool from the
electrical source before making any tool
adjustments.
Accidental startup of tool may result in
serious personal injury.
GROOVING ROLLS
Ensure that the proper roll set is on the tool . Rolls
are marked with the pipe size and part number .
Refer to the “Tool Rating and Roll Selection”
section . If proper rolls are not on the tool, please
refer to relative sections to change the rolls .
CAUTION
• Ensure that roll retaining bolts are tight.
Loose retaining bolts could seriously
damage both the tool and the rolls.
PREPARING PIPE FOR GROOVING
CAUTION
• For maximum grooving roll life, remove
foreign material and loose rust from the
interior and exterior surfaces of the pipe
ends. Rust is an abrasive material that
will wear the surface of grooving rolls.
Foreign material may interfere with or
damage grooving rolls, resulting in distorted
grooves and grooves that are not within
Victaulic specifications.
For proper tool operation and production of
grooves that are within Victaulic specifications,
the following pipe preparation steps must be
followed .
1.
Victaulic recommends square-cut pipe for
use with grooved-end pipe products .
2.
Raised internal and external weld beads
and seams must be ground flush with the pipe
surface 2 inches/50 mm back from the pipe
ends .
3.
The inside diameter of the pipe end must
be cleaned to remove coarse scale, dirt, and
other foreign material that might interfere with
or damage grooving rolls . The front edge of the
pipe end shall be uniform with no concave/
convex surface features that will cause improper
grooving roll tracking and result in difficulties
during coupling assembly .
SHORT PIPE LENGTHS
The RG3212 tool is capable of grooving short
pipe lengths without the use of a pipe stand .
Table 1 identifies the minimum and maximum
pipe lengths that can be grooved without the
use of a pipe stand .
Pipe lengths longer than those listed in this
table (and up to 20 feet/6 meters) must be
supported with a pipe stand . Pipe lengths from
20 feet/6 meters up to double-random lengths
(approximately 40 feet/12 meters) must be
supported with two pipe stands . Refer to the
“Long Pipe Lengths” section for instructions on
how to groove long pipe lengths .
If pipe is required that is shorter than the
minimum length listed in the tables, shorten
the next-to-last piece so that the last piece is
as long (or longer) than the minimum length
specified . Refer to the example below .
EXAMPLE:
A 20-foot, 4-inch/6 .2-m length of
10-inch/250 mm diameter steel pipe is required to
finish a section, and only 20-foot/6 .1-m lengths are
available . Instead of roll grooving a 20-foot/6 .1-m
length of steel pipe and a 4-inch/0 .1-m length of
steel pipe, follow these steps:
1.
Refer to Table 1 and note that for
10-inch/250 mm diameter steel pipe,
the minimum length that should be roll
grooved is 10 inches/255 mm .
2.
Roll groove a 19-foot, 6-inch/5 .9-m length
of pipe and a 10-inch/255-mm length
of pipe . Refer to the “Long Pipe/Tubing
Lengths” section .
10
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TM-RG3212
/ Operating and Maintenance Instructions Manual
