Stanley SK47, Руководство пользователя

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SK47 User Manual ◄ 11
OPERATION
open the hydraulic valve lever further. If the rock bit
still does not rotate adjust the motor control knob
until rotation is achieved.
9. After the rock bit has carved out a depression in the
material being drilled, open the hydraulic valve lever
fully. Readjust the motor control knob to obtain a
good drilling speed. Adjust the air valve to ensure
the cuttings are being extracted from the drill hole.
10. Keep the drill steel centered in the hole.
11. Insufficient air flow can cause the drill steel to bind
in the hole.
12. Apply adequate feed pressure to the sinker drill to
maintain optimum drilling performance.
13. When drilling deep holes, it is advantageous to stop
drilling every 1 to 2 minutes. This allows the receiver
and hoses to charge and provide a short burst of
air when the tool is again turned on to clear excess
cutting from the hole.
14. When the bottom of the tool comes within 6 inches of
the drill hole, it is time to either add another section
of drill steel or replace the existing drill steel with a
longer section. Close the hydraulic valve lever but
leave the air valve
ON
and then lift the tool with drill
steel and rock bit out of the hole. Leaving the air
valve
ON
helps prevent cuttings from falling around
the bit while the bit is lifted from the hole.
15. When the tool, drill steel and bit have been removed
from the drill hole, turn the valve lever OFF and turn
the hydraulic supply circuit control valve OFF before
changing the drill steel or rock bit.
COLD WEATHER OPERATION
If the breaker is to be used during cold weather, preheat
the hydraulic fluid at low engine speed. When using the
normally recommended fluid, fluid temperature should
be at or above 50 °F/10 °C (400 ssu/82 centistokes)
before use.
Damage to the hydraulic system or breaker can result
from use with fluid that is too viscous or thick.
FLUSHING REQUIREMENTS
• The SK47 is designed for air flushing only.
• The minimum of CFM/7 liters per second at 75 psi/5
bar of compressed air should be used for flushing
the chips out of the drilled hole.
• The minimum recommended hose size is 3/8-
inch/10 mm ID and must have a minimum working
pressure rating of 150 psi/10 bar or 150 percent of
the maximum pressure produced by the system,
whichever is higher.
• Air hoses must have an oil-resistant inner surface
and an abrasion-resistant exterior surface. When
severe operating conditions make the possibility
of cutting or damaging the hose likely, the hose
shall be of extra-ply armored, or other protective
construction.
• Pressure regulators shall be used to limit maximum
air pressure at the tool to 100 psi/7 bar.
• An accessible means for shutting off the air supply
to the sinker drill should be provided.
• Automatic filtering systems are recommended.