
4.MAINTENANCE B-70315EN/02
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4.3.1 Turbo Blower Oil
(1) Check method
Check the amount of oil in the turbo blower while referring to the
figure below. The oil level should be between graduations H and
L. This check should be made when the oscillator is at a rest.
When the turbo blower is running, it is impossible to check the
amount of oil correctly.
(2) Replenishment method
1) Remove the hexagonal-head screw from the oil inlet with a
17 mm wrench. Be careful not to lose the O-ring on the
screw. Before supplying turbo oil, stop the oscillator
according to the correct procedure and turn off the power. If
the oscillator is not stopped by the correct procedure, the
pressure in the turbo blower becomes negative. Opening the
oil inlet under such a condition lets a large amount of air get
in the turbo blower. An air flow caused this way can bring
oil mist into the oscillator, possibly resulting in the optical
mirror getting dirty.
2) Take a bottle of oil from the oil kit (A04B-0800-K326).
Unscrew the nozzle from the bottle, remove the inner cap,
then replace the nozzle. Insert the nozzle into the oil inlet
and supply oil. Be careful not to allow dust to enter
through the inlet. This task is made easier by attaching the
tube (included in the oil kit) onto the nozzle. Supply oil
until the oil reaches the 3/4 level relative to the L indication
when viewed through the oil window. Note that both too
little and too much oil can result in mechanical failure.
3) Clean the oil inlet, hexagonal-head screw of the oil inlet,
and O-ring by wiping with a clean cloth or paper. Ensure
that these parts are completely free of dust. If the oil is
contaminated with dust, the turbo blower may fail. Set the
O-ring in the groove around the hexagonal-head screw of
the oil inlet, then tighten the hexagonal-head screw. Note
that if the O-ring is not set correctly, or if the
hexagonal-head screw is not tightened fully, the turbo
blower may not be air-tight.
4) If oil has spilled over, wipe it up. Otherwise, the
peripheral equipment may be affected adversely.
5) If there is oil left over, put the inner lid back on the bottle,
and keep the bottle in a dark, cool place.
(3) Replacement method
1) Get a container for oil drain on hand, and put the tip of the
drain tube into the container.
2) Turn the oil drain cock through 905 clockwise, and the oil
will start draining.
3) After all the oil has been drained, close the oil drain cock by
setting it back in the initial place.
4) Supply oil by following the same procedure as for
replenishment.