
B-70315EN/02 3.INSTALLATION
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3.4.2 Removing Cooling Water
Remove cooling water according to the procedure below.
(1) Open the cooling water inlet (IN) and outlet (OUT), and leave
both open.
(2) Once the cooling water has stopped draining, connect a
compressed air hose to the cooling water inlet (IN). Check that
the cooling water outlet is open.
(3) Gradually supply compressed air, allowing the pressure to build
up to 0.1 to 0.2 MPa. Never apply full pressure suddenly.
Continue to supply compressed air at this pressure for about 5
minutes.
(4) Increase the compressed air pressure to 0.3 to 0.4 MPa, and
supply air until water inside the white water piping of the
oscillator is completely removed. It takes about 10 minutes to
remove water.
Close the orange water removal valve of the water distributor
unit, and further supply compressed air for five minutes. For the
C1000-E, you cannot feed water or air from the outlet side
(OUT) because the flow meter has a directional property, so this
step completes the removal of cooling water.
(5) Exchange the cooling water inlet (IN) and outlet (OUT) and
supply compressed air to execute steps (3) and (4).
(6) When the removal of cooling water is completed, detach the
compressed air hose, and attach the blanking plugs (provided
with the oscillator at shipment) to the PT plugs of the cooling
water inlet (IN) and outlet (OUT).
CAUTION
Also, the cooling water should be removed from the
oscillator whenever the oscillator is to be stored
over the winter, when there is a danger of the
cooling water freezing. The frozen cooling water
may destroy the water pipes or heat exchangers.
Flowmeter sensor
control
Valve for
removing water
LED
Valve for removing
pressure
Fig.3.4.2 External view of the water distributor unit