control operator's panel
Pull the lever to operate air flushing.
This is a fourway lever.
Dust hood control
Pull the lever to slide the dust hood down.
Push the lever to slide the dust hood up.
Thread loosening button
C1 ) Pull the lever to operate normal rotation
C2 ) Push the lever to operate reverse rotation
Note : these two functions are never used for
thread coupling or uncoupling.
C3 ) Swing the lever in this direction to drill with
Depress this button to operate drifter percussion
only. By successive impulses to the drifter control in
C2 direction operate reverse rotation to break loose
This is the normal lever position when drilling.
the threaded joints.
The lever is locked in position.
HP / Dust collector switch
C4 ) Swing the lever in this position to drill on
This is a 3 positions switch.
In this specific position, the drilling automatics are
This lever position is exceptionally used to get full
reverse percussion (if the drifter is so equipped), or to
force the drilling when encountering faults by over
riding the antijamming.
in such an occasion, rod jamming is risky.
Carefully reduce the feed speed by switching the
feed control in collaring position.
Down, HP flow is diverted to tank.
J1) Middle, HP pressure built up to allow move-
The drifter hourmeter indicates the total operating
ments or auxiliaries.
of the drifter.
Up, the dust collector is activated.
It should be used to determine service mainte-
Emergency stop button
Press the button to switch down the engine in case
Hydraulic centralizer control
of emergency only.
Pull the lever to open the centralizer.
The emergency stops selector must be placed
on CPA position (refer to safety).
Push the lever to close the centralizer.