Ulvac EMP-20W, Instruction Manual

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ULVAC CRYOGENICS INCORPORATED 25
(4) Stop GN-15i, turn the REMOTE/LOCAL switch to “REMOTE”, and connect the
remote cables for nitrogen generators.
(5) Press RUN/STOP button of EMP-20W to reboot the entire system.
（ For IM-120 ）
(1) Open the dry air valve to supply dry air to IM-120.
(2) Supply nitrogen gas to EMP-20W for at least one hour.
(3) Press the RUN/STOP switch of EMP-20W to reboot the entire system.
NOTE: Please inform us in advance when the system is to be suspended for longer than
two weeks.
8.5 Corrective action in the event of an error
When errors occur in the equipments, please follow the procedure below and in “14.
Trouble Shooting”.
8.5.1 Corrective action when electric power failure occurs
EMP-20W and GN-15i will be automatically restored in the event of a power-failure and
they will be rebooted automatically when the electricity comes back. However, when the
amount of liquid nitrogen inside is 75% or more, liquefying operation may not be
resumed at the time of rebooting. (These are the common precautions when rebooting)
8.5.2 Corrective action when COMP. AL. occurs
(1) Check the electric supply voltage and capacity.
(2) Press RESET button of EMP-20W.
(4) When the trouble is temporary, UW404 re-starts. When it stops due to abnormal
temperature, it may be unable to re-start about 30 minutes until the temperature of a
detection part falls.
When UW404 does not start at all, but COMP.ALARM lights up again, check each part
according to "14.Trouble shooting."
8.5.3 Corrective action when GN2 AL. occurs
(For GN-15i)
(1) Turn off the RUN/STOP switch of EMP-20W.
(2) Conduct reset operation of GN-15i.
(3) Turn ON the RUN/STOP switch to re-start EMP-20W.
(4) When Nitrogen gas begins to flow from GN-15i, GN2 AL. lights off.