4
1
Quick User Guide
A)
If the system has not been installed and set up, see section 3.
B)
Check there is at least 10 cm of liquid nitrogen in the dewar. Never allow the dewar
to become empty when the Cryojet is running.
C)
Switch on the controller. See “Default conditions on startup” below.
D)
Set the temperature.
E)
Set the flow rates.
Suggested sample flow rate for 100 K:
6 l/min
Suggested sample flow rate for 90 K:
10 l/min
Suggested shield flow rate:
5 l/min.
For a fast cool-down, set the sample flow rate to 10 l/min initially, and then reduce it
to the desired value when the temperature is close to the set temperature.
F)
Turn the automatic temperature control ON. The Cryojet will now cool to the set
temperature. (To select Automatic mode, the sample flow must be at least 2l/min. If a
flow has been selected but after a couple of minutes no flow can be felt, switch the
temperature control
off
and see section 9.)
G)
Align the nozzle with the anticipated sample position: see “Alignment of Nozzle”
below.
100.0
6.0
4.0
Figure 1 Main features of Cryojet controller
Use only when
computer is
attached. See 6.3.3.
To set sample flow,
press and hold SET,
while pressing RAISE or
LOWER.
To set shield flow, press
and hold SET, while
pressing RAISE or
LOWER.
These turn the
automatic
temperature
control on and off
To change the set
temperature, press and
hold SET, while pressing
RAISE or LOWER.
Only use P, I and D to
change temperature control
parameters. See section 7.
Press and hold CAL/STORE and
press SET to save parameters.
(This will interrupt the flow
momentarily.)
Only use MAN if
manual control of
heater is required
HEATER light is on
when automatic
temperature
control is on.
