19
4. Operating procedures
Operating method
(9) When the outlet temperature has become stable, change
the solvent with the actual specimen. At this time the outlet
temperature will change slightly and adjust liquid sending
speed again when necessary.
～
Finishing process
～
(10) When specimen has been sent, change the specimen back
to solvent and clean inside the nozzle. Clean inside the
nozzle for about five minutes, turn the pump FWD switch
OFF, and then choke the spray pressure to 0.
(11) Turn the spray switch and the heater switch OFF.
(12) Some solvent will remain in the path for some time after
spraying of solvent has finished. Continue operation for a
while to completely recover solvent.
When solvent contains water content, the cooling trap may
be frosted and the amount of solvent recovered may
decrease. If amount of solvent recovered in the collecting
flask is too small, stop the freezer once with the DEFROST
switch and allow frost on the cooling trap to melt. The
freezer will automatically recover after five minutes.
When the inlet temperature drops to 60
℃
or below and the
outlet temperature drops to 50
℃
or below, the END switch
will appear at the upper left portion on the screen. When
recovering of solvent has finished, press END switch to
switch the screen.
Close the supply cock of N
2
gas.
SPRAYING
PUMP FWD
PULSE
JET
HEATING
SPRAY
PUMP FWD
HEATER
PUMP
REV
in operation
HEATER
DEFROST
END
SPRAY
N
outlet
B
H R
FWD
N
outlet
B
H R
N
outlet
B
R
