Operation
3 - 6
Determine Drag Pressure
Drag pressure should be determined using the following
procedure:
Move the carriage so that the faced pipe ends are
approximately 2" apart.
Shift the carriage control valve to the middle (neutral) position.
Select the heating mode, and adjust the middle pressure
reducing valve to its lowest pressure by turning the valve
counterclockwise.
Shift the carriage control valve to the left.
Gradually increase the pressure by turning the valve clockwise.
Increase the pressure until the carriage moves.
Quickly reduce the heating pressure valve counterclockwise
until the carriage is just barely moving.
Record this actual drag pressure.
TX03023-8-19-09
A - Carriage Control Valve
B - Pressure Gauge
C - Pressure Selector Valve
D - Pressure Reducing Valves (3)
PH019
24
-11-15-00
A
D
C
B
Check Alignment
Move carriage to the left at facing pressure, until pipe ends contact.
Look across the top surface of pipe ends to check alignment. If there is
a noticeable step across the joint, adjustments must be made.
Hydraulically operated equipment is operated under
pressure. Anything caught in the machine will be
crushed. Keep fingers, feet, arms, legs, and head out
of the machine while operated.
Ensure there is no unacceptable gap between the pipe ends. If there is
an unacceptable gap, return to
Loading Pipe into Machine
.
If pipe is not lined up, make a HI/LO adjustment to the jaw of the high
side.
Hi/Lo adjustment:
Unclamp the jaw slightly and return the clamping control to the neutral
position. Make adjustments to the Hi/Lo by turning the knob on top of
the cylinder and then reclamp the jaw.
IMPORTANT:
Always tighten the side that is higher, never loosen the
low side.
Repeat adjustment until pipe is aligned.
NOTICE:
When clamping, do not over-adjust the clamping force
because machine damage can result. Check to see if there is space
between the upper and lower jaws. If the two jaws are touching, do
not continue to tighten.
Over-adjustment may cause thin-walled pipe to compress affecting the
ovality of the pipe
TX04482-10-24-12
PH
04
73
7-10
-2
-12
PH
04
74
2-10
-8-12
