
7.UNITS B-70315EN/02
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7.11.2 Replacement Method
(1) Turn off the power to the CNC, then turn off the main circuit
breaker and power supply for the laser oscillator.
(2) Remove the connected tubes and cables.
(3) Remove the screws fastening the unit, and remove the unit to
replace it with a new one.
(4) Install the new unit in the order from (3) to (2).
Ensure that all tubes are fastened and that all cables are
connected correctly.
7.11.3 Adjustment Method (Adjusting the Laser Gas Consumption)
(1) Detach the tube connected to the filter of the pressure controller,
and attach a gas flowmeter with laser gas specifications.
(2) Set 30 in parameter No. 15260, and start the oscillator. Air
entered when the oscillator is open to the atmosphere in 1) above
is released. After 30 seconds, turn off the oscillator start switch
(RUN).
(3) Restart the laser oscillator, and place the oscillator in the
oscillation ready state (LSTR).
(4) Perform internal discharge with a low output level specified first.
Increase the output command level gradually to the rated output.
If the discharge voltage is high, perform purging, then, increase
the output command level again.
(5) While observing the flow rate on the gas flowmeter when
internal discharge is performed with the rated output, turn the
exhaust flow rate adjustment valve to adjust the flow rate to the
setting.
(6) Purge the oscillator.
(7) Detach the gas flow meter. Perform the operation described in (2)
to replace gas in the tube.
(8) Reset the modified parameter to its original value.
• Predetermined flow rate
Oscillator model Flow rate
C2000-E, C4000-E 10 liters/hour (0.167 liters/minute)