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ULVAC CRYOGENICS INCORPORATED
8. Operation
8.1 Checks prior to operation
Check the following before starting the operation.
(1) The power source of the EMP-14A and GN-10i is connected correctly.
(2) The air inlet and outlet ports of EMP-14A and GN-10i are cleared.
(3) The nitrogen gas tube is connected correctly between EMP-14A and the
nitrogen generators.
(4) The RUN/STOP switch of EMP-14A is turned off (lights off).
(5) The main power source of EMP-14A and GN-10i are ON.
(6) If IM-120 is used, a tube is properly connected between IM-120 and the dry air
main valve
(7) Nitrogen generator remote cables are properly connected between EMP-14A
and the nitrogen generator.
8.2 Prepare for operation
8.2.1
Start supplying nitrogen gas
(When GN-10i is used)
(1) Press RUN/STOP switch of EMP-14A. (Not GN-10i)
GN-10i starts up. When it starts operation normally, the POWER switch on
EMP-14A flashes with long term light-on and short term light-off.
Note:
Once operation starts, RUN/STOP switch does not work for the next six
minutes. If you wish to shut down, press emergency off button.
(2) 6 minutes later from the start of GN-10i, the ball in the front flow meter goes up,
and nitrogen-gas supply starts. Check that the center of a ball is at the position
of 10 N liter / min. When having shifted, please refer to the operation manual of
GN-10i and adjust the flow rate by control valve.
(When IM-120 is used)
(1) Open the dry air valve and supply dry air to IM-120.
The supply air pressure gauge "AIR INLET PRESSURE" shows dry air supply
pressure.
(2) At nitrogen gas pressure regulator, adjust the nitrogen gas pressure gauge
"GN2 OUTLET PRESSURE" to 0.2 MPa. Nitrogen gas flow meter "GN2
OUTLET FLOW" is adjusted Nitrogen gas supply system.
CAUTION
Use nitrogen gas with recommended flow rate and pressure. Otherwise, liquid
nitrogen generation may be hindered.
