9
3
Unpacking and preparation
3.1
Unpacking the system
Carefully remove the Cryojet and all the accessories from the packing cases, and check the
packing list to make sure that you have found all of the components. Examine the system
to make sure that it has not been damaged since it left the factory. If you find any signs
of damage please contact Oxford Instruments immediately.
A complete system consists of:
•
Sample flow unit
•
Stand with xyz adjustable stage
•
Shield unit
•
Dewar top fitting and 3 bolts
•
Includes fill port adaptor with flow restrictor
•
For customers in the USA, 1/2” flare fitting
•
Controller
•
Polythene tubing (1.5 m)
•
Electrical cables with the following labels:
•
coldhead
•
shield unit
•
dewar leg (and N2 level cut-off)
•
Spares kit, including:
•
Allen keys (hexagonal wrenches): 8 mm, 6 mm
•
Tie-wraps
•
Dipstick
•
Liquid nitrogen storage dewar
•
Pressure relief valve
The following components are options that will only have been supplied if ordered
separately.
•
Optional autofill system, or
•
Liquid nitrogen hose
•
Liquid nitrogen level meter and probe
•
Pressurised liquid nitrogen supply dewar
•
Dewar base with wheels
•
High vacuum pumping system and lines
3.2
Preparing the system for operation
a)
Check that the dewar top fitting is already fitted to the storage dewar, and is secured
using the three M6 screws provided. Make sure that the three small screws that hold
the top fitting together are loose. (The sample flow leg and shield leg will not slide
into the dewar top fitting if these screws are tightened.) Remove the vent valve by
pulling firmly upwards. (See Figure 4.)
b)
Position the liquid nitrogen dewar about 1 metre from the intended position of the
sample.
