Ditch Witch JT30AT - Manual (Page 187)

Systems and Equipment - 187
JT30 /JT30 All Terrain Operator’s Manual
Service Mode
CMW
Service Mode
Automated functions of the JT30 are made possible by communication between five electronic controllers
onboard the unit. The main controller and pipeloader controller share information as a single unit. If
communication between these two controllers is lost, full operation is not possible and the unit will shift into
Service Mode. Service Mode permits limited operation without automated functions and standard
equipment protections. In Service Mode, an operator can complete a bore and move the unit away from
the jobsite so that proper repairs can be made at a Ditch Witch dealership.
This table explains how automated functions are affected in Service Mode.
NOTICE: Some automated functions that protect components from damage are NOT available in
Service Mode. Use extreme caution when operating in Service Mode.
IMPORTANT: Only a qualified Ditch Witch service technician can return the unit to normal operation.
Contact your Ditch Witch dealership.
Function Normal Operation Service Mode Operation
Slow Zones
Purpose: To protect
carriage from high speed or
high pressure impact at the
front and rear of the drill
frame.
Carriage speed automatically
slows as the carriage
approaches sensors at the
front and rear of the drill
frame. Front home and rear home sensor
input data is not available.
Carriage speed is limited to the slow
zone speed.
To access full thrust speed/pressure,
press and hold the 2-speed button.
Use caution to prevent damage.
Shuttle Safe
Purpose: To protect shuttles
from carriage movement.
Carriage movement stops
automatically if shuttles are
not retracted when carriage
moves away from rear home
sensor. Front and rear home sensor input data
is not available. Carriage may strike
shuttles.
Operator must fully retract shuttles
before moving carriage.
Auto Dither
Purpose: Aligns the hex
inner rod and collar on AT
units when threading a
section of drill pipe.
In AT mode, the inner rod
rotates clockwise, then
counterclockwise repeatedly
as carriage moves forward to
align inner rod with inner rod
collar. Inputs required to establish dither are
unavailable.
Operator must use manual jog
potentiometer to rotate inner rod while
threading pipe sections.
Note: In Service Mode, the ON/OFF/
MANUAL switch is not required to
enable the jog potentiometer.