15
VE414
7.
After a trial groove is prepared and pipe
removed from the tool, carefully check the
groove diameter (“C” dimension), as charted on
pages 35 - 38 under Roll Groove Specifications.
The “C” dimension is best checked with a pipe
tape. It also may be checked with a vernier cal-
iper or narrow-land micrometer at two loca-
tions, 90° apart, around the groove. Average
reading must equal the required groove diame-
ter specification.
8.
If groove diameter (“C” dimension) is not
within tolerance, the diameter stop must be
adjusted to obtain the proper dimension. To
adjust for a
smaller groove diameter,
turn
the depth adjuster
counterclockwise.
To
adjust for a
bigger groove diameter,
turn
adjuster
clockwise.
A quarter turn either way
will change the groove diameter adjustment by
0.031"
(0.125" per full turn).
9.
Prepare another trial groove and check the
groove diameter again. Repeat Steps 7 and 8
until the groove diameter is within specifica-
tion. If excessive pipe flaring or stalling of the
drive motor occurs, even when roll grooving
with the reduced ram pressure (“black” selec-
tor valve setting), adjustment of the Ram Speed
Control Valve is required.
• The “C” dimension (groove diameter) must always
conform to specifications under Roll Groove
Specifications, pages 35 - 38, to ensure proper joint
performance.
Failure to do so could result in personal injury,
property damage, improper installation, joint leakage
or joint failure.
ADJUSTING THE RAM SPEED
CONTROL VALVE
The Ram Speed Control Valve adjustment is set
at the maximum speed when the tool leaves
the factory, which is satisfactory for the roll
grooving of most pipes within the tool’s rating.
When excessive pipe flare or tool “stalling”
exists, proceed as follows:
1.
Set power switch to the “OFF” position.
2.
Make sure the selector valve on the power
switch side of the tool is adjusted to the “black”
setting.
