Rig Up and Rig Down
Canrig Drilling Technology Ltd. 4-9
c. Once the ramp is over center, the Ramp Positioning [Ramp Pos – F4] function at the HMI screen
can be used to regulate pump pressure while raising or lowering the ramp. Use F3 or F5 to step
pressure up or down in 100-psi increments. F4 turns Ramp Positioning ON and OFF while you are
on the screen. Status message mode can also be used to regulate the pressure. In status message
mode, F5 clears the value, F4 raises the first digit by ones, and F3 moves the ones-column one
place to the left. Ramp Positioning can be used to regulate pressure in a range of minimum 2,000
psi and maximum 3,200 psi.
d. After the ramp has been lifted past its balance point and begins to lower to the rig floor, watch the
lower end of the ramp to ensure the carrier wheels do not interfere with the track on the ramp.
Ensure the carrier tracks (channels) do not bind with the carrier bed I-beams when entering the
base skid.
e. Once the ramp is resting on the ramp hangers (Figure 4-1, page 4-1), attach and tighten the
turnbuckles to keep the ramp from pulling back. Use the carrier encoder override controls to take up
winch cable slack. Ensure cables tighten properly onto the winch. If not, realign cables on drum
grooves. Ensure cables pass correctly under the carrier cable guides.
f. To avoid accidental shifting, shift the selection valve back to pipe racks, and lock it.
21. Remove the safety chain and swing out the pipe racks (Figure 4-11, page 4-10). Level the racks with
the hydraulic legs and remove the swing wedges.
Warning!
Mind any potential pinch points when pulling
the ramp lip plate over onto the rig floor.
Caution
• When operating the pipe rack
hydraulic legs, ensure personnel are at
least 5 ft away from the hydraulic leg pads.
• While swinging, keep feet out
from under pipe rack leg.
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