5
Routine and Preventive Maintenance
Maintaining the Source Block Assembly
82
Surveyor MSQ Plus Hardware Manual
Thermo Scientific
Figure 62.
View of the front side of the source block with the cone wash nozzle turned away
from the entrance cone
3. Place a lint-free cloth over the drainage holes in the bottom of the source enclosure.
4. Turn the entrance cone clockwise and pull forward to remove it.
5. Taking care to handle it by its base, carefully remove the cone wash nozzle from the source
block.
6. Proceed to one of the following:
• For instructions on cleaning the entrance cone, go to the next procedure.
• For instructions on cleaning the internal components of the source block assembly,
go to
“Removing the Source Block Assembly”
.
Figure 63.
Entrance cone with cone facing upwards
Tip
It is easy to drop small objects such as the entrance cone and the cone wash nozzle
into the drain at the bottom of the source enclosure. Temporarily blocking the
drainage holes in the bottom of the source enclosure will prevent small objects from
falling into the drainage tubing.
Note
The entrance cone assembly is reverse-threaded. Therefore, to remove it, you
turn it clockwise. To install it, you turn it counter-clockwise.
Cone wash nozzle
Corona pin knob
Entrance cone
CAUTION
Take care when handling the entrance cone. Always store the entrance
cone with its cone facing upwards. See
CAUTION
Because its tip is fragile, take care when handling the cone wash nozzle.
Cone facing upwards