7.UNITS B-70315EN/02
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7.6 TURBO BLOWER
When the turbo blower is replaced, the gas circulating system is open
to the atmosphere for a long time. Pay particular attention to the
immediate surroundings to ensure that dust and other contaminants do
not enter the gas circulating system.
Clean the flanges of the turbo blower and the pipe flanges before
replacing the turbo blower.
Do not incline the turbo blower while transporting and installing it. If
the turbo blower is tilted, lubricating oil enters the blower,
contaminating the laser gas circulating system and optical mirrors. In
this case, the turbo blower can no longer be used.
7.6.1 Replacement Method
(1) Turn off the power to the CNC, then turn off the main circuit
breaker and power supply for the laser oscillator. Turn off the
power to the chiller unit.
(2) Disconnect the cooling water tube, gas tube, power cable
connector, and ground cable from the turbo blower, then drain
the oil from the turbo blower.
(3) Remove the conduit cable of the power supply.
(4) Detach the gas tube (gas dust collector) from the turbo blower
outlet. Cover the openings of the removed gas tube and the turbo
blower with masking tape to prevent foreign matter from entering
them.
(5) Detach all the tubes connected to the piping on the inlet side of
the turbo blower, then remove the piping.
(6) Remove the hexagon headed bolt which secures the turbo base to
the frame, and remove the turbo blower together with the base.
The turbo blower weighs about 30 kg, so special care should be
taken.
(7) Remove the hexagon headed bolt which secures the damping
rubber, and remove the turbo blower.
(8) Remove the two metal brackets from the removed turbo blower,
and mount them on a new turbo blower. Also, remove the filter
from the inlet of the old turbo blower, and attach the filter to the
new turbo blower.
(9) Attach the damping rubber, and mount the turbo blower on the
turbo base.
(10) Mount the new turbo blower on the oscillator. Attach the
damping rubber, and fasten it temporarily. Then, secure the gas
tube. Be careful not to damage the O-ring, and be sure to insert
the O-ring. Adjust the position of the turbo blower not to apply
excessive force to the bellows pipe.
(11) After securing the piping, tighten the bolt of the damping rubber.