ULVAC CRYOGENICS INCORPORATED
33
Dispense Liquid Nitrogen Manually
Connecting liquid nitrogen supply flexible hose
Connect the joint (coupler joint) of attached flexible hose to LN
2
manual dispense port located at
the front of UMP-40W. When connecting to the coupler joint, do so while pushing the outer ring
part of the UMP-40W side.
Dispense liquid nitrogen
To manually dispense liquid nitrogen, insert the head end of flexible hose in liquid nitrogen
container, and keep pressing the MANUAL START button for 3 seconds. With the above steps,
the MANUAL START button lights green, and liquid nitrogen flows out of head end of flexible
hose.
The dispense operation stops automatically 10 minutes later from the start-up of supply. The
MANUAL START flickers 30 seconds in advance of the automatic termination. When more
liquid nitrogen is needed, press MANUAL START button again to extend the operation for
another 10 minutes. Press MANUAL STOP button to stop dispending.
Liquefynig operation stops during the manual dispense operation.
When nitrogen-gas supply stops, liquid nitrogen cannot be supplied.
Never leave the place while manually dispensing liquid nitrogen. Keep the place well
ventilated for prevention of lack of oxygen.
・
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
The pressure relief valve might be activated when the system is resumed after completing
LN2 manual dispense. This does not give any damage to the system.
CAUTION
CAUTION
Summary of Contents for UMP-40W
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