Tri Tool 642SB Clamshell Air and Hydraulic - Manual (Page 22)

22
TRI TOOL INC.
92-0612 Rev. 131230
NOTE:
CAUTION:
Monitor the cutting operation.
Apply cutting fluid as necessary.
If chips build up so much that they tangle in the Clamshell, disengage the feed for
2-3 revolutions to clear the chip.
Then stop the Clamshell and remove the chips.
Refer to ‘Severing’ later in this section for specific machining procedures.
In-line pipe stores energy.
When the pipe is severed, the pipe may move.
To prevent accidents due to the spring in the pipe system, be sure to secure the pipe
on both sides of the sever line in order to prevent differential movement of the pipe
ends.
When the machining operation is finished, disengage the Feed Pin by pulling the
Tripper Shaft to the ‘out’ position.
Allow the Headstock to continue for 3 revolutions to complete the cutting operation.
Turn off the Drive Motors.
Retract the Tool Holders so that the Tool Bit(s) clear the pipe OD.
The Tool Holders are retracted by rotating the Feed Sprocket clockwise using
the special Spanner Wrench supplied with the Clamshell.
Run the Drive Motors until the split-lines of the Headstock and the Housing match.
Loosen the Clamping Pads and Jackscrews.
Remove the Clamshell from the pipe.
If the Clamshell must be split to remove it, refer to ‘Installation of the Clamshell on
an in-line pipe’, earlier in this section.
You should have a complete pipe sever at this time.
FEED PIN TO SPROCKET ENGAGEMENT
Rotate the Headstock until the Sprocket on the Tool Block begins to approach the
Feed Pin.