30-62 Overview
D20x22 Series II Navigator HDD
Drilling Fluid
Drilling fluid increases drilling efficiency in
several ways. Refer to
Fundamentals of HDD
Manual
for drilling fluid and drilling fluid
system information.
Drilling Fluid Pump Output Flow
Use
Drilling Fluid Trim Switch
(1)
to
increase flow. The initial switch input
changes the display screen
(2)
to show the
current pump output flow set point.
The second input from the increase/decrease of the
Trim Switch
results in a 1-gpm (3.8-L/min) change in the
value of the initial set points.
2
2
1
