Zeiss Cryo Trap, Instruction Manual

Page: 16 / 20

7 Operation | 7.3 Dismounting the Cooling Plate ZEISS
7.3 Dismounting the Cooling Plate
1. NOTICE! Take care of collisions with the cooling plate.
Retract the EDS detector from working position.
2. Open the knurled thumb screw that fixes the
cooling plate
2
.
2
3. Carefully pull the cooling plate down.
7.4 Installing the Cooling Plate
Prerequisite
ü
The pin is mounted onto the cooling plate.
1. Insert the pin
1
of the cooling plate into the
borehole on the tip of the cooling rod.
1
2. Set the bottom surface of the cooling plate to the same level as the bottom surface of the
end cap of the objective lens.
3. Fix the cooling plate with the knurled thumb
screw
2
.
2
4. Measure the resistance between SE2 collector grid and the cooling plate with a DVM.
These two parts should be isolated from each other.
INFO: The cooling plate is not allowed to touch any detector or the end cap of the objec-
tive lens.
5. Also measure the resistance between VPSE collector grid and the cooling plate with a DVM.
These two parts should be isolated from each other.
6. NOTICE! Take care of collisions with the cooling plate.
Insert the EDS detector back to working position.
7.5 Defrosting the Dewar
Defrost the dewar to avoid icing in the vacuum chamber.
The procedure is the same as the procedure for venting the specimen chamber [
}
15] .
16 Instruction Manual ZEISS Cryo Trap | en-US | Rev. 2 | 346000-8166-000