160
OPERATION
Work
HBR204-MU-6-eng.doc
OPERATION AND MAINTENANCE INSTRUCTION MANUAL
THIS DOCUMENT IS THE PROPERTY OF HÜETTE BOHRTECHNIK GMBH - TOTAL OR PARTIAL REPRODUCTION IS PROHIBITED
S410
SELECTION OF ROTARY HEAD MOVEMENT SPEED
Lever with stop in forward and backward position.
Return to neutral must take place manually.
4.9.2.c
Position
Action
I
Minimum speed
II
Medium speed
III
Maximum speed
8
ADJUSTMENT OF PRESSURE IN THE HEAD
MOVEMENT CIRCUIT (BALANCING)
4.9.5.A
Clockwise
rotation
Increase of hydraulic pressure
Counterclockwise
rotation
Decrease of hydraulic pressure
7
INDICATION
OF
PRESSURE
IN
THE
HEAD
MOVEMENT CIRCUIT (BALANCING)
NOTE: Balancing consists of creating variable hydraulic counter-pressure in the head
movement circuit during the work advance phase.
The adjustment of balance makes it possible to keep the work progress constant when the
following conditions occur:
-
the consistency of the ground is variable;
-
the weight of the battery of the rods is high (mast in vertical position);
-
working with continuous flight auger.
