30-58 Overview
D20x22 Series II Navigator HDD
Step 6:
Adjust thrust pressure limit with
Speed/Pressure Trim Switch
. Rotation
pressure limit
cannot
be adjusted in R.A.T.T. mode (oscillation or straight
drilling).
The rotation pressure limiter must be turned ON when using the R.A.T.T. tool in
order to prevent damage to the tool components.
To start AutoDrill in the R.A.T.T. Straight Drilling mode, the
R.A.T.T. Oscillation
Mode Enabled Light
(3)
must be OFF. Press
R.A.T.T. Mode Key
(1)
twice, first to
activate Oscillation mode, then press again to toggle to Straight Drilling mode.
AutoDrill - Pause
Move either
Rotation
or
Thrust/Pullback Handle
out of NEUTRAL to stop drill string motion and PAUSE
AutoDrill.
The
Thrust/Pullback
and
Rotation Handles
must
both
be returned to NEUTRAL for at least 1/2 second before
the handles are enabled for manual control of rotation and thrust/pullback.
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1