ULVAC CRYOGENICS INCORPORATED
7
2.1 Front panel of MP-300K (Figure 2-1)
Emergency off button
: Press this button to interrupt power supply to the
control circuit to stop such operations as LN
2
production or transfer. Do not use this button
except for emergency.
Front panel
: Inside this panel, LN
2
dewar, coldhead, or electrical
wiring are located. Do not open except for regular
inspections, maintenance or repair works.
LN
2
manual dispense port
: The coupling to connect liquefied nitrogen supply
piping. Note that the port reaches to extremely low
temperature during and immediately after
dispensing. Do not touch it directly while in low
temperature.
2.2 Operation panel of MP-300K (Figure 2-2)
RUN/STOP
: Use this button to start or stop the main unit. This
button lights green during normal operation, and
flickers when in error state.
RESET
: This switch is used to reset the MP-300K error.
AUTO READY
: Press this button to use optional auto supply function.
When you wish to auto-supply, turn this ON. The
button lights green while on standby, and blinks when
an error condition is encountered at the level sensor of
the auto supply destination.
AUTO SUPPLY
: Press this button to start supplying liquefied nitrogen
at a desired moment while using optional auto supply
function. The button lights white while in auto supply
state.
MANUAL START
: Press this button to manually dispense liquid nitrogen
from LN
2
supply ports. (To be referred to as “Manual
supply”) Manual supply is terminated automatically in
10 minutes. This button lights green while liquid
nitrogen is manually supplied and blinks from pressing
30 seconds in advance to automatic termination.
When you wish to supply more, press this button once
again while it is blinking to extend 10 minutes.
