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17
Product Manual - CryoDoser FleX
™
LN
2
Dosing System
Activating Insta-Purge
The CryoDoser FleX unit has a purge feature that minimizes
downtime for maintenance and/or nozzle change out without
draining or shutting down the main LN
2
supply line.
Nozzle Change Out
1
Remove the dosing head heater.
2
Insert the nozzle tool into the nozzle area until the tool
connects with the nozzle.
3
Remove the nozzle with the driver in a counter-
clockwise direction.
4
Once the nozzle is removed, place the new nozzle
or cleaned nozzle into the nozzle tool and insert in a
clockwise direction.
Caution! The dosing head heater may still
be in operation. Do not expose
skin to prolonged contact with
the dosing head heater. The
maximum temperature of the
dosing head heater is 150°F
(65°C).
Caution! If possible, always perform
nozzle change out procedures
before introducing LN
2
into the
CryoDoser FleX unit. Failure to
do so may cause the nozzle to
unthread and fall out.
Note:
If the nozzle does not loosen easily, a low
voltage heat gun may be used to heat
the
end
of the nozzle tool. The tool can then be
placed over the nozzle to slowly melt any
ice allowing removal of the nozzle. Repeat
this process if the nozzle remains stuck.
Nozzle Cleaning
1
Remove the nozzle from the CryoDoser FleX unit.
2
Clean the nozzle opening with a very thin wire and
blow dry nitrogen through it.
3
Thoroughly dry the nozzle with dry nitrogen gas before
re-installing.
Caution! Any moisture left on the nozzle
will immediately freeze up when
the nozzle is re-installed which
may cause the nozzle to unthread
and fall out.
Service and Maintenance
Image 24
1.
Unscrew
old nozzle
and
remove
2.
Replace
with new
nozzle
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