10 ► DL07 User Manual
OPERATION
PREOPERATION PROCEDURES
CHECK POWER SOURCE
1.
Using a calibrated flow meter and pressure gauge,
check that the hydraulic power source develops a
flow of 4-12 gpm/15-45 lpm at 1000-2000 psi/70-
140 bar.
2. Make certain that the hydraulic power source is
equipped with a relief valve set to open at 2100
psi/145 bar minimum.
CONNECT HOSES
1.
Wipe all hose couplers with a clean lint-free cloth
before making connections.
2. Connect hoses from the hydraulic power supply to
the tool quick disconnects. It is good practice to con-
nect the return hose first and disconnect it last to
minimize or avoid trapped pressure within the drill.
3. Observe the arrow on hose couplers to ensure that
the flow is in the proper direction. The male coupler
on the circuit hose end is the supply (pressure) cou-
pler.
4. Make sure the circuit PRESSURE (male quick dis-
connect) hose is connected to the port at the back of
the drill handle. The circuit RETURN hose (female
quick disconnect) is connected to the port closest to
the trigger.
5. Move the hydraulic circuit control valve to the ON
position to direct hydraulic flow to the drill.
NOTE:
If uncoupled hoses are left in the sun, pressure in-
crease inside the hose may result in making them
difficult to connect. Whenever possible, connect the
free ends of the hoses together.
OPEN-CENTER (OC) OR CLOSED-CENTER
(CC) OPERATION
The DL07 can be configured to run on OC or CC circuits.
1. Determine the system type.
2. Remove the hex plug (81) from the spring cap.
FOR OPEN-CENTER OPERATION:
Using a 3/16 in. hex, reach through the hole in the spring
cap and turn the selector screw counter-clockwise until
meeting resistance (from the retaining ring). Turn the se-
lector clockwise and then counter-clockwise to be sure
the selector is being stopped by the retaining ring. Do
not force the selector screw. Open-center operation is
now selected.
FOR CLOSED-CENTER OPERATION:
Using a 3/16 in. hex, reach through the hole in the spring
cap and turn the selector screw fully clockwise. When
the selector screw bottoms. Closed-center operation is
now selected.
CAUTION
To prevent damage to the retaining ring, do not
attempt to force the selector screw counter-clockwise
beyond the point of initial resistance.
Reinstall the hex plug. Failure to install the plug may in-
troduce contaminants to the spool bore resulting in re-
placement of the valve spool and main housing.
DRILL OPERATION
1. Observe all safety precautions.
2. Place the selected drill bit fully into the chuck. Cen-
ter the bit and tighten the chuck using the key pro-
vided. Remove the key and store away from the drill.
3. Momentarily press the trigger to ensure that the drill
bit rotates clockwise and runs true.
4. Select a work position that gives secure footing and
balance while operating the drill.
5. Press the drill against the work and squeeze the trig-
ger.
The drilling method used is determined by the material
being drilled and the size and depth requirements of the
hole.
Brittle material such as rock, brick or concrete can be
drilled efficiently when the bit is caused to strike (ham
-
mer) the hole bottom to break up the material. Without
hammering, the rotating bit will only grind down and be-
come dull. The Stanley HD08 should be used for this
application.
