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RH 656W
Hoses and connections
A.
Compressed air source
Water separator, VAM 5A (optional)
B.
Lubricator, BLG 30 or CLG 30 (optional)
C.
D.
Maximum 3 meter (10 feet) compressed air
hose between the lubricator and the machine.
Water
E.
Air hose, machine
F.
G.
Air hose, pusher leg
Water hose
H.
♦
Check that you are using the correct
recommended operating pressure, 6 bar (e).
♦
The maximum permissible air pressure, 7 bar (e),
must not be exceeded.
♦
Blow any impurities out of the compressed air hose
before connecting it to the machine.
♦
Select the correct dimension and length for the
compressed air hose. For hose lengths up to 30
meters (100 feet), a hose with a minimum internal
diameter of 25 mm (1") should be used. If the hose
length is between 30 and 100 meters (100 and
330 feet), a hose with a minimum internal diameter
of 50 mm (2") should be used.
© 2010 Atlas Copco Construction Tools AB | No. 9800 0657 71 | 2010-03-16
Original instructions
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Safety and operating instructions
Connecting a water separator
The length of the air hose between the compressor
and the water separator must be such that the water
vapor is cooled and condenses in the hose before
reaching the water separator.
If the ambient temperature is below 0 °C (32 °F) the
hose must be short enough to prevent the water from
freezing before reaching the water separator.
Lubrication
The rock drill is lubricated with oil mixed with
compressed air, which is taken to the parts that need
continuous lubrication. Oil is metered into the
compressed air using an Atlas Copco BLG 30 or
CLG 30 lubricator connected to the air line.
Use Atlas Copco Rock Drill AIR-OIL which is
specially developed for BBC, BBD and RH pneumatic
Rock drills. Rock Drill AIR-OIL is readily
biodegradable according to OECD 301 and has high
film strength that can withstand heavy loads. If Rock
Drill AIR-OIL is not available use a mineral-based air
tool oil with the properties recommended in the table
below.
Temperature range (°C)
-30 to 0
-10 to +20
+10 to +50
Pressure adjustment
Air pressure
Ensure that the compressor can deliver the required
air pressure of 4–6 bar to the machine.
1. High pressure causes rough operation and
excessive wear.
2. Low pressure results in a slow drilling speed.
Calibrate the correct air pressure
Use the Atlas Copco (9090 0550 80) pressure gauge
to check the air pressure when the rock drill is
running. The pressure should be measured close to
the inlet nipple. Recommended operating pressure
is 6 bar.
Viscosity grade (ISO
3448)
ISO VG 32-68
ISO VG 68-100
ISO VG 100-150
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