Closing Operations - Hitachi ZA3000 Series Instruction Manual

3.8 Closing Operations

(1) After measurement of the last sample, aspirate pure water
through all of the suction tubes for washing.
(2) Disconnect the Silicone tube form the separator.
(3) Extinguish the flame after waiting for about 1 min.
NOTE 1: Do not extinguish the flame without disconnecting the
silicone tube from the separator. Otherwise the cell may
crack.
NOTE 2: Keep supplying cooling water for about 10 min in order to
cool down the burner head and flame magnet.
(4) After 5-10 min washing with pure water, turn off the power switch
of the HFS-4
Do not stop supplying Ar gas at this time.
(5) Raise the tube support clamp lever to loosen the tube support.
NOTE: If the tube support remains set in place, the tube will be
deformed and reach the end of its service life earlier.
(6) About 5 minutes after turning off of HFS-4, stop Ar gas supply.
(7) Detach the absorption cell and cell holder after their cooling
down.
(8) Stop the cooling water supply.
NOTE 1: Do not stop gas supply immediately after turning off of
HFS-4. Otherwise, condensation may occur in gas tubes.
NOTE 2: When the system will not be used for a long time, be sure
to wash the flow path with pure water. Otherwise the
tubes will be deteriorated earlier.
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