Operation - Stanley SK47 User Manual

The recommended hose size is .500 inch/12 mm I.D. up to
50 ft/15 m long and .625 inch/16 mm I.D. minimum up to 100
ft/30 m.
PRE-OPERATION PROCEDURES
CHECK POWER SOURCE
1. Using a calibrated fl owmeter and pressure gauge, check
that the hydraulic power source develops a fl ow of 7-9 gpm/26-
34 lpm at 1500-2000 psi/105-140 bar.
2. Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100-2250 psi/145-155 bar
maximum.
INSTALL DRILL STEEL & ROCK BIT
Use standard 4-1/4 inch shank x 7/8 inch hex drill steels.
Drill steels are available in a variety of lengths. Start with a
short length so that the tool may be operated at a normal
standing position. The tool handles should never exceed chest
height during operation.
1. Thread a rock bit onto the drill steel.
2. Rotate the latch out and up.
3. Slide the drill steel into the tool.
4. Rotate the latch down being careful not to pinch your
fi ngers. When correctly installed, the collar on the drill steel
should be above the bottom of the latch.
CONNECT HOSES
1. Wipe all hose couplers with a clean, lint-free cloth before
making connections.
2. Connect the hoses from the hydraulic power source to the
tool fi ttings or quick disconnects. It is a good practice to con-
nect return hoses fi rst and disconnect them last to minimize
or avoid trapped pressure within the tool.
3. Observe fl ow indicators stamped on hose couplers to
ensure that fl uid fl ow is in the proper direction. The female
coupler on the tool hose is the inlet coupler.
4. Move the hydraulic circuit control valve to the ON position
to operate the tool.
NOTE:
If uncoupled hoses are left in the sun, pressure increase

OPERATION

within the hoses may make them diffi cult to connect.
When possible, connect the free ends of the hoses
together.
4. Connect the hose from the air supply to the hose on the
tool.
The air supply must be minimum 30 cfm at 120 psi.
Supplying less than these specifi cations may result in
inadequate extraction of rock cuttings; cause cuttings to
migrate up the drill steel and into the tool and result in
tool damage; diminish drilling time; and cause premature
wear of the drill bit.
OPERATION PROCEDURES
1. Observe all safety precautions.
2. Install the appropriate tool bit for the job.
3. Start the hydraulic supply and turn the circuit control valve
to the ON position.
4. Open the air valve on the tool just enough to permit a small
amount of air fl ow from the tool bit.
NOTE:
Air fl ow must be continuous during drilling to avoid clog-
ging of the air passages and/or back-fl ushing of waste
products into the drill.
4. Place the bit fi rmly on the surface to be drilled. Do not op-
erate the sinker drill without the drill steel in contact with the
work surface. Adequate down pressure is very important.
5. Several methods can be used to reduce the tendency for
the drill to "walk" on the surface to be drilled before the hole
is initiated.
If the trigger is partially depressed, the piston will cycle at
low speed, without tool bit rotation, allowing a start hole to
be made. This will keep the drill in place when full power is
applied.
Rotating the motor control lever straight up will shut off all
rotation allowing the operator to establish a starting hole prior
to full application.
10
NOTICE