Atlas Copco GTG25-F120-13 - Operating Instructions; Verifying Free Speed

GTG25 F120-13 EN Operation
© Atlas Copco Industrial Technique AB - 9839 0065 01
13
Operating Instructions
Verifying free speed
WARNING Risk of severe injury
Air under pressure can cause injury.
► Always shut off the air supply when not in use or before any adjustments.
► Drain the hose of air pressure and disconnect the tool from air supply when not in use or before
any adjustments.
► Always use the correct hose size and air pressure for the tool.
WARNING Risk of injury
► Always lock autobalancer with applicable part before starting the tool.
► Never measure free speed with a wheel attached.
► Measure the free speed daily.
Required tools
■
Allen key
■
Tachometer
Instructions
1. Press the spindle lock button forward and keep it pressed while tightening the flange washer using
an allen key.
2. Connect the tool to the air supply.
3. Put a tachometer in the spindle hole.
4. Start the tool and measure the speed at a pressure of 6.3 bar.
Make sure that the throttle lever is pressed down to the bottom and measure the speed for at
least 1 minute
5. Remove the tachometer.
6. Verify the free speed on the tachometer with the speed marked on the tool.
WARNING Risk of injury
■
The measured speed must not exceed the stated maximum speed marked on the tool. Re-
turn the tool to an authorized service center in the event of overspeeding.