Piping - Hitachi ZA3000 Series Instruction Manual

1.5.5 Piping

(7) Turn the magnet to the opposite direction at 180° again, and
tighten the fixing screws.
(8) Turn the magnet to the opposite direction at 180°, and tighten
the fixing screws in the opposite side.
(9) Set the burner head into the burner chamber, connect the
cooling water tubes, and rotate the magnet to the measurement
position.
(10) Adjust the burner height to about 7.5 mm by turning the
adjustment knob.
(1) Argon gas
Connect the accompanying gas hose with a nylon tube
(7J1-7510) to Ar GAS INLET, which is located at the rear side of
the HFS-4, for the supply of argon gas.
Set the argon gas supply pressure at 500 kPa.
If a nylon tube having an outer diameter of 6 mm is used to
supply the gas, it can be directly connected to the HFS-4.
NOTE 1: If the gas hose connection is insufficient, argon gas may
leak from the joint. Be sure to check for gas leakage after
hose connection.
NOTE 2: Note that the accompanying gas hose with a nylon tube
(7J1-7510) can also be connected to the AAS main unit.
Note that if you connect and disconnect the hose every
time you use the instrument, the joint may be worn faster,
or the nylon tube may be damaged or deformed.
When argon gas is used also in the AAS main unit, install
a two-way manifold with stop valves at the argon gas
supply outlet, and split the gas line between the two units.
NOTE 3: If the nylon tube is connected and disconnected
repeatedly, its end may be damaged or deformed,
causing the connection to become loose.
When you disconnect the nylon tube, check the condition
of its end. If it is damaged or deformed, cut off the end
portion before you reconnect it.
If it is necessary to connect and disconnect the hose
frequently, do so at the metal nipple joint of the hose.
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