Ditch Witch JT922 - Manual (Page 109)

Systems and Equipment - 108
JT922 Operator’s Manual
Tracker Control
CMW
Disable Thrust and Rotation
1. When drill head enters target pit or exits the
ground, turn off tracker.
After 8-16 seconds, green tracker control light
(shown), located on drilling unit anchoring
console, will come on. Hydraulic power to
thrust and rotation will be disabled.
2. Turn engine off.
3. Change downhole tools.
4. If you are tracking backreamer’s path,
turn on tracker and enable code transmission. After 8-16 seconds, green tracker control light on drilling
unit anchoring console will go off and thrust and rotation will function.
If you are not tracking backreamer’s path, install tracker control key (shown) on drilling unit. Green
tracker control light on drilling unit anchoring console will go off and thrust and rotation will function.
IMPORTANT: Tracker operator cannot
disable thrust and rotation from tracker if
tracker control key (shown) is installed in
drilling unit and turned to the disable
position. See “Tracker control key” on
page 23 for more information.
NOTICE: If you are not using tracker control,
turn off drilling unit before changing
downhole tools.