26
ULVAC CRYOGENICS INCORPORATED
9. Dispense Liquid Nitrogen Manually
9.1 Connecting liquid nitrogen flexible hose
Connect the coupler joint of the flexible hose to LN
2
manual dispense port on the
front panel of EMP-14A. When connecting, do so while pushing down the outer
ring part.
9.2 Dispense liquid nitrogen
To manually dispense liquid nitrogen, put the end of the flexible hose into the
desired dewar, and press-and-hold MANU START button for 3 seconds. The
supply stops automatically in 10 minutes. MANU START button starts to blink 30
seconds before the supply stops. To dispense more liquid nitrogen, press MANU
START button while running to extend the supply for another 10 minutes. Press
MANU STOP to stop dispensing.
☆
Production of liquid nitrogen stops during manual supply operation.
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When nitrogen-gas supply is suspended, liquid nitrogen cannot be dispensed.
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When the EMP-14A is in standby for automatic transfer (when the AUTO
READY is pressed), LN
2
manual dispense is limited to 25%. Manual
deispense function is not available during automatic transfer is taking place.
Perform manual dispense after automatic transfer finishes.
・
When dispensing liquid nitrogen, make sure to keep the room well ventilated
in order to prevent oxygen shortage.
・
Never attempt to seal liquid nitrogen.
・
When dispensing liquid nitrogen, be sure to put on protective fittings such as
leather gloves. Also, use caution with handling liquid nitrogen supply flexible
hose as it is in extremely low temperature right after dispensing.
WARNING
CAUTION
Never leave the place while manually dispensing liquid nitrogen. Keep the
place well ventilated for prevention of lack of oxygen.
